#chacha20 — Public Fediverse posts

‘The Gentlemen’ Profile: Why This Ransomware Group Wants In Before It Locks You Out

The Gentlemen is a financially motivated ransomware group operating since July 2025 using a Ransomware-as-a-Service model with dual-extortion tactics. They exfiltrate sensitive data before encrypting systems, targeting Windows, Linux, and ESXi environments. The group focuses heavily on preparation before encryption, using legitimate administrative tools like PowerRun.exe for privilege escalation, and establishing persistence through multiple mechanisms including registry modifications, scheduled tasks, and autostart configurations. They disable security tools, delete logs, terminate database and backup services, and use XChaCha20 and Curve25519 encryption. Primarily targeting medium-to-large organizations in the Asia-Pacific region, their activity has increased by 2,100% compared to typical levels. Victims receive ransom notes with approximately 10-day deadlines threatening to publish stolen data on leak sites if demands are not met.

Pulse ID: 6a9035ff9a03d932d9008b31
Pulse Link: https://otx.alienvault.com/pulse/6a9035ff9a03d932d9008b31
Pulse Author: AlienVault
Created: 2026-08-27 13:05:03

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#0Day #Asia #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Linux #OTX #OpenThreatExchange #RAT #RansomWare #RansomwareAsAService #SMS #Windows #bot #AlienVault

‘The Gentlemen’ Profile: Why This Ransomware Group Wants In Before It Locks You Out

The Gentlemen is a financially motivated ransomware group operating since July 2025 using a Ransomware-as-a-Service model with dual-extortion tactics. They exfiltrate sensitive data before encrypting systems, targeting Windows, Linux, and ESXi environments. The group focuses heavily on preparation before encryption, using legitimate administrative tools like PowerRun.exe for privilege escalation, and establishing persistence through multiple mechanisms including registry modifications, scheduled tasks, and autostart configurations. They disable security tools, delete logs, terminate database and backup services, and use XChaCha20 and Curve25519 encryption. Primarily targeting medium-to-large organizations in the Asia-Pacific region, their activity has increased by 2,100% compared to typical levels. Victims receive ransom notes with approximately 10-day deadlines threatening to publish stolen data on leak sites if demands are not met.

Pulse ID: 6a9035ff9a03d932d9008b31
Pulse Link: https://otx.alienvault.com/pulse/6a9035ff9a03d932d9008b31
Pulse Author: AlienVault
Created: 2026-08-27 13:05:03

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#0Day #Asia #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Linux #OTX #OpenThreatExchange #RAT #RansomWare #RansomwareAsAService #SMS #Windows #bot #AlienVault

‘The Gentlemen’ Profile: Why This Ransomware Group Wants In Before It Locks You Out

The Gentlemen is a financially motivated ransomware group operating since July 2025 using a Ransomware-as-a-Service model with dual-extortion tactics. They exfiltrate sensitive data before encrypting systems, targeting Windows, Linux, and ESXi environments. The group focuses heavily on preparation before encryption, using legitimate administrative tools like PowerRun.exe for privilege escalation, and establishing persistence through multiple mechanisms including registry modifications, scheduled tasks, and autostart configurations. They disable security tools, delete logs, terminate database and backup services, and use XChaCha20 and Curve25519 encryption. Primarily targeting medium-to-large organizations in the Asia-Pacific region, their activity has increased by 2,100% compared to typical levels. Victims receive ransom notes with approximately 10-day deadlines threatening to publish stolen data on leak sites if demands are not met.

Pulse ID: 6a9035ff9a03d932d9008b31
Pulse Link: https://otx.alienvault.com/pulse/6a9035ff9a03d932d9008b31
Pulse Author: AlienVault
Created: 2026-08-27 13:05:03

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#0Day #Asia #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Linux #OTX #OpenThreatExchange #RAT #RansomWare #RansomwareAsAService #SMS #Windows #bot #AlienVault

‘The Gentlemen’ Profile: Why This Ransomware Group Wants In Before It Locks You Out

The Gentlemen is a financially motivated ransomware group operating since July 2025 using a Ransomware-as-a-Service model with dual-extortion tactics. They exfiltrate sensitive data before encrypting systems, targeting Windows, Linux, and ESXi environments. The group focuses heavily on preparation before encryption, using legitimate administrative tools like PowerRun.exe for privilege escalation, and establishing persistence through multiple mechanisms including registry modifications, scheduled tasks, and autostart configurations. They disable security tools, delete logs, terminate database and backup services, and use XChaCha20 and Curve25519 encryption. Primarily targeting medium-to-large organizations in the Asia-Pacific region, their activity has increased by 2,100% compared to typical levels. Victims receive ransom notes with approximately 10-day deadlines threatening to publish stolen data on leak sites if demands are not met.

Pulse ID: 6a9035ff9a03d932d9008b31
Pulse Link: https://otx.alienvault.com/pulse/6a9035ff9a03d932d9008b31
Pulse Author: AlienVault
Created: 2026-08-27 13:05:03

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#0Day #Asia #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Linux #OTX #OpenThreatExchange #RAT #RansomWare #RansomwareAsAService #SMS #Windows #bot #AlienVault

‘The Gentlemen’ Profile: Why This Ransomware Group Wants In Before It Locks You Out

The Gentlemen is a financially motivated ransomware group operating since July 2025 using a Ransomware-as-a-Service model with dual-extortion tactics. They exfiltrate sensitive data before encrypting systems, targeting Windows, Linux, and ESXi environments. The group focuses heavily on preparation before encryption, using legitimate administrative tools like PowerRun.exe for privilege escalation, and establishing persistence through multiple mechanisms including registry modifications, scheduled tasks, and autostart configurations. They disable security tools, delete logs, terminate database and backup services, and use XChaCha20 and Curve25519 encryption. Primarily targeting medium-to-large organizations in the Asia-Pacific region, their activity has increased by 2,100% compared to typical levels. Victims receive ransom notes with approximately 10-day deadlines threatening to publish stolen data on leak sites if demands are not met.

Pulse ID: 6a9035ff9a03d932d9008b31
Pulse Link: https://otx.alienvault.com/pulse/6a9035ff9a03d932d9008b31
Pulse Author: AlienVault
Created: 2026-08-27 13:05:03

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#0Day #Asia #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Linux #OTX #OpenThreatExchange #RAT #RansomWare #RansomwareAsAService #SMS #Windows #bot #AlienVault

New Mirai-Based Linux Botnet 'Evooo1Bot' Turns Victims Into Proxies

A sophisticated Linux botnet named Evooo1Bot has been actively targeting internet-facing devices since July 2026, exploiting multiple vulnerabilities in edge devices across diverse regions. Built on the leaked Mirai source code, this modular botnet features significantly enhanced capabilities including encrypted command-and-control communications, SSH brute-force scanning, and a reverse SOCKS relay module that transforms compromised devices into persistent proxies. The malware employs multiple encryption layers using AES-256-CTR, ChaCha20, and XOR-based obfuscation, alongside an integrated exploit arsenal targeting IoT devices, networking equipment, and enterprise applications. The SOCKS relay functionality enables attackers to conceal their origin, pivot into internal networks, and conduct follow-on operations through victim infrastructure, placing it well beyond conventional Mirai-derived malware in terms of technical sophistication.

Pulse ID: 6a7f349eb2e90e5a682c7e6f
Pulse Link: https://otx.alienvault.com/pulse/6a7f349eb2e90e5a682c7e6f
Pulse Author: AlienVault
Created: 2026-08-14 15:30:38

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Edge #Encryption #InfoSec #IoT #Linux #Malware #Mirai #OTX #OpenThreatExchange #RAT #RCE #SSH #bot #botnet #AlienVault

New Mirai-Based Linux Botnet 'Evooo1Bot' Turns Victims Into Proxies

A sophisticated Linux botnet named Evooo1Bot has been actively targeting internet-facing devices since July 2026, exploiting multiple vulnerabilities in edge devices across diverse regions. Built on the leaked Mirai source code, this modular botnet features significantly enhanced capabilities including encrypted command-and-control communications, SSH brute-force scanning, and a reverse SOCKS relay module that transforms compromised devices into persistent proxies. The malware employs multiple encryption layers using AES-256-CTR, ChaCha20, and XOR-based obfuscation, alongside an integrated exploit arsenal targeting IoT devices, networking equipment, and enterprise applications. The SOCKS relay functionality enables attackers to conceal their origin, pivot into internal networks, and conduct follow-on operations through victim infrastructure, placing it well beyond conventional Mirai-derived malware in terms of technical sophistication.

Pulse ID: 6a7f349eb2e90e5a682c7e6f
Pulse Link: https://otx.alienvault.com/pulse/6a7f349eb2e90e5a682c7e6f
Pulse Author: AlienVault
Created: 2026-08-14 15:30:38

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Edge #Encryption #InfoSec #IoT #Linux #Malware #Mirai #OTX #OpenThreatExchange #RAT #RCE #SSH #bot #botnet #AlienVault

New Mirai-Based Linux Botnet 'Evooo1Bot' Turns Victims Into Proxies

A sophisticated Linux botnet named Evooo1Bot has been actively targeting internet-facing devices since July 2026, exploiting multiple vulnerabilities in edge devices across diverse regions. Built on the leaked Mirai source code, this modular botnet features significantly enhanced capabilities including encrypted command-and-control communications, SSH brute-force scanning, and a reverse SOCKS relay module that transforms compromised devices into persistent proxies. The malware employs multiple encryption layers using AES-256-CTR, ChaCha20, and XOR-based obfuscation, alongside an integrated exploit arsenal targeting IoT devices, networking equipment, and enterprise applications. The SOCKS relay functionality enables attackers to conceal their origin, pivot into internal networks, and conduct follow-on operations through victim infrastructure, placing it well beyond conventional Mirai-derived malware in terms of technical sophistication.

Pulse ID: 6a7f349eb2e90e5a682c7e6f
Pulse Link: https://otx.alienvault.com/pulse/6a7f349eb2e90e5a682c7e6f
Pulse Author: AlienVault
Created: 2026-08-14 15:30:38

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Edge #Encryption #InfoSec #IoT #Linux #Malware #Mirai #OTX #OpenThreatExchange #RAT #RCE #SSH #bot #botnet #AlienVault

New Mirai-Based Linux Botnet 'Evooo1Bot' Turns Victims Into Proxies

A sophisticated Linux botnet named Evooo1Bot has been actively targeting internet-facing devices since July 2026, exploiting multiple vulnerabilities in edge devices across diverse regions. Built on the leaked Mirai source code, this modular botnet features significantly enhanced capabilities including encrypted command-and-control communications, SSH brute-force scanning, and a reverse SOCKS relay module that transforms compromised devices into persistent proxies. The malware employs multiple encryption layers using AES-256-CTR, ChaCha20, and XOR-based obfuscation, alongside an integrated exploit arsenal targeting IoT devices, networking equipment, and enterprise applications. The SOCKS relay functionality enables attackers to conceal their origin, pivot into internal networks, and conduct follow-on operations through victim infrastructure, placing it well beyond conventional Mirai-derived malware in terms of technical sophistication.

Pulse ID: 6a7f349eb2e90e5a682c7e6f
Pulse Link: https://otx.alienvault.com/pulse/6a7f349eb2e90e5a682c7e6f
Pulse Author: AlienVault
Created: 2026-08-14 15:30:38

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Edge #Encryption #InfoSec #IoT #Linux #Malware #Mirai #OTX #OpenThreatExchange #RAT #RCE #SSH #bot #botnet #AlienVault

New Mirai-Based Linux Botnet 'Evooo1Bot' Turns Victims Into Proxies

A sophisticated Linux botnet named Evooo1Bot has been actively targeting internet-facing devices since July 2026, exploiting multiple vulnerabilities in edge devices across diverse regions. Built on the leaked Mirai source code, this modular botnet features significantly enhanced capabilities including encrypted command-and-control communications, SSH brute-force scanning, and a reverse SOCKS relay module that transforms compromised devices into persistent proxies. The malware employs multiple encryption layers using AES-256-CTR, ChaCha20, and XOR-based obfuscation, alongside an integrated exploit arsenal targeting IoT devices, networking equipment, and enterprise applications. The SOCKS relay functionality enables attackers to conceal their origin, pivot into internal networks, and conduct follow-on operations through victim infrastructure, placing it well beyond conventional Mirai-derived malware in terms of technical sophistication.

Pulse ID: 6a7f349eb2e90e5a682c7e6f
Pulse Link: https://otx.alienvault.com/pulse/6a7f349eb2e90e5a682c7e6f
Pulse Author: AlienVault
Created: 2026-08-14 15:30:38

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Edge #Encryption #InfoSec #IoT #Linux #Malware #Mirai #OTX #OpenThreatExchange #RAT #RCE #SSH #bot #botnet #AlienVault

Multi-Functional Linux Botnet "Evooo1Bot"

A previously undocumented Linux botnet named Evooo1Bot has been discovered, actively targeting Internet-facing devices since July 2026. Built upon Mirai's DDoS engine, it extends functionality with encrypted C2 communications, SSH brute-force scanning, SOCKS relay capabilities, credential sniffing, and an integrated exploit arsenal. The malware employs multi-layer string encryption using AES-256-CTR, ChaCha20, and XOR-based key derivation. It exploits numerous vulnerabilities across edge devices, routers, and enterprise applications. The reverse SOCKS relay module transforms compromised devices into persistent proxies, enabling attackers to conceal their origin and pivot into internal networks. The botnet features 28 remote commands organized into modules for persistence, self-update, file transfer, interactive shell, sniffing, proxy relay, SSH scanning, DDoS attacks, and CVE exploitation. Multiple persistence mechanisms ensure continued operation across systemd, SysV init, cron, and shell profiles.

Pulse ID: 6a7e2be6ba37cc87ae552659
Pulse Link: https://otx.alienvault.com/pulse/6a7e2be6ba37cc87ae552659
Pulse Author: AlienVault
Created: 2026-08-13 20:41:10

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #DDoS #DoS #ELF #Edge #Encryption #InfoSec #Linux #Malware #Mirai #OTX #OpenThreatExchange #Proxy #RAT #RCE #SMS #SSH #bot #botnet #AlienVault

Multi-Functional Linux Botnet "Evooo1Bot"

A previously undocumented Linux botnet named Evooo1Bot has been discovered, actively targeting Internet-facing devices since July 2026. Built upon Mirai's DDoS engine, it extends functionality with encrypted C2 communications, SSH brute-force scanning, SOCKS relay capabilities, credential sniffing, and an integrated exploit arsenal. The malware employs multi-layer string encryption using AES-256-CTR, ChaCha20, and XOR-based key derivation. It exploits numerous vulnerabilities across edge devices, routers, and enterprise applications. The reverse SOCKS relay module transforms compromised devices into persistent proxies, enabling attackers to conceal their origin and pivot into internal networks. The botnet features 28 remote commands organized into modules for persistence, self-update, file transfer, interactive shell, sniffing, proxy relay, SSH scanning, DDoS attacks, and CVE exploitation. Multiple persistence mechanisms ensure continued operation across systemd, SysV init, cron, and shell profiles.

Pulse ID: 6a7e2be6ba37cc87ae552659
Pulse Link: https://otx.alienvault.com/pulse/6a7e2be6ba37cc87ae552659
Pulse Author: AlienVault
Created: 2026-08-13 20:41:10

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #DDoS #DoS #ELF #Edge #Encryption #InfoSec #Linux #Malware #Mirai #OTX #OpenThreatExchange #Proxy #RAT #RCE #SMS #SSH #bot #botnet #AlienVault

Multi-Functional Linux Botnet "Evooo1Bot"

A previously undocumented Linux botnet named Evooo1Bot has been discovered, actively targeting Internet-facing devices since July 2026. Built upon Mirai's DDoS engine, it extends functionality with encrypted C2 communications, SSH brute-force scanning, SOCKS relay capabilities, credential sniffing, and an integrated exploit arsenal. The malware employs multi-layer string encryption using AES-256-CTR, ChaCha20, and XOR-based key derivation. It exploits numerous vulnerabilities across edge devices, routers, and enterprise applications. The reverse SOCKS relay module transforms compromised devices into persistent proxies, enabling attackers to conceal their origin and pivot into internal networks. The botnet features 28 remote commands organized into modules for persistence, self-update, file transfer, interactive shell, sniffing, proxy relay, SSH scanning, DDoS attacks, and CVE exploitation. Multiple persistence mechanisms ensure continued operation across systemd, SysV init, cron, and shell profiles.

Pulse ID: 6a7e2be6ba37cc87ae552659
Pulse Link: https://otx.alienvault.com/pulse/6a7e2be6ba37cc87ae552659
Pulse Author: AlienVault
Created: 2026-08-13 20:41:10

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #DDoS #DoS #ELF #Edge #Encryption #InfoSec #Linux #Malware #Mirai #OTX #OpenThreatExchange #Proxy #RAT #RCE #SMS #SSH #bot #botnet #AlienVault

Multi-Functional Linux Botnet "Evooo1Bot"

A previously undocumented Linux botnet named Evooo1Bot has been discovered, actively targeting Internet-facing devices since July 2026. Built upon Mirai's DDoS engine, it extends functionality with encrypted C2 communications, SSH brute-force scanning, SOCKS relay capabilities, credential sniffing, and an integrated exploit arsenal. The malware employs multi-layer string encryption using AES-256-CTR, ChaCha20, and XOR-based key derivation. It exploits numerous vulnerabilities across edge devices, routers, and enterprise applications. The reverse SOCKS relay module transforms compromised devices into persistent proxies, enabling attackers to conceal their origin and pivot into internal networks. The botnet features 28 remote commands organized into modules for persistence, self-update, file transfer, interactive shell, sniffing, proxy relay, SSH scanning, DDoS attacks, and CVE exploitation. Multiple persistence mechanisms ensure continued operation across systemd, SysV init, cron, and shell profiles.

Pulse ID: 6a7e2be6ba37cc87ae552659
Pulse Link: https://otx.alienvault.com/pulse/6a7e2be6ba37cc87ae552659
Pulse Author: AlienVault
Created: 2026-08-13 20:41:10

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #DDoS #DoS #ELF #Edge #Encryption #InfoSec #Linux #Malware #Mirai #OTX #OpenThreatExchange #Proxy #RAT #RCE #SMS #SSH #bot #botnet #AlienVault

Multi-Functional Linux Botnet "Evooo1Bot"

A previously undocumented Linux botnet named Evooo1Bot has been discovered, actively targeting Internet-facing devices since July 2026. Built upon Mirai's DDoS engine, it extends functionality with encrypted C2 communications, SSH brute-force scanning, SOCKS relay capabilities, credential sniffing, and an integrated exploit arsenal. The malware employs multi-layer string encryption using AES-256-CTR, ChaCha20, and XOR-based key derivation. It exploits numerous vulnerabilities across edge devices, routers, and enterprise applications. The reverse SOCKS relay module transforms compromised devices into persistent proxies, enabling attackers to conceal their origin and pivot into internal networks. The botnet features 28 remote commands organized into modules for persistence, self-update, file transfer, interactive shell, sniffing, proxy relay, SSH scanning, DDoS attacks, and CVE exploitation. Multiple persistence mechanisms ensure continued operation across systemd, SysV init, cron, and shell profiles.

Pulse ID: 6a7e2be6ba37cc87ae552659
Pulse Link: https://otx.alienvault.com/pulse/6a7e2be6ba37cc87ae552659
Pulse Author: AlienVault
Created: 2026-08-13 20:41:10

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #DDoS #DoS #ELF #Edge #Encryption #InfoSec #Linux #Malware #Mirai #OTX #OpenThreatExchange #Proxy #RAT #RCE #SMS #SSH #bot #botnet #AlienVault

Recent Attack Activity Analysis Using North Korea-Related Lures

APT-C-06 (Darkhotel) is an APT organization that has been active since at least 2007, targeting corporate executives, defense industries, and electronics sectors. In April 2026, the group launched phishing attacks using a decoy document titled 'North Korean Central Television Real-time Broadcasting Program Instructions.' The document instructs users to download an application for watching North Korean Central Television. By late May, attacks evolved to deliver malicious MSI files through phishing emails. These MSI files execute VBS code that creates scheduled tasks to download and execute PowerShell scripts, which then retrieve subsequent payloads. The malware employs ChaCha20 encryption and ultimately deploys shellcode. PowerShell has become a high-frequency component in APT-C-06's attack chain since 2025, handling payload downloads and persistence mechanisms.

Pulse ID: 6a7dc1fd395815126acd4647
Pulse Link: https://otx.alienvault.com/pulse/6a7dc1fd395815126acd4647
Pulse Author: AlienVault
Created: 2026-08-13 13:09:17

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Email #Encryption #ICS #InfoSec #Korea #Malware #NorthKorea #OTX #OpenThreatExchange #Phishing #PowerShell #RAT #SMS #ShellCode #VBS #bot #AlienVault

Recent Attack Activity Analysis Using North Korea-Related Lures

APT-C-06 (Darkhotel) is an APT organization that has been active since at least 2007, targeting corporate executives, defense industries, and electronics sectors. In April 2026, the group launched phishing attacks using a decoy document titled 'North Korean Central Television Real-time Broadcasting Program Instructions.' The document instructs users to download an application for watching North Korean Central Television. By late May, attacks evolved to deliver malicious MSI files through phishing emails. These MSI files execute VBS code that creates scheduled tasks to download and execute PowerShell scripts, which then retrieve subsequent payloads. The malware employs ChaCha20 encryption and ultimately deploys shellcode. PowerShell has become a high-frequency component in APT-C-06's attack chain since 2025, handling payload downloads and persistence mechanisms.

Pulse ID: 6a7dc1fd395815126acd4647
Pulse Link: https://otx.alienvault.com/pulse/6a7dc1fd395815126acd4647
Pulse Author: AlienVault
Created: 2026-08-13 13:09:17

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Email #Encryption #ICS #InfoSec #Korea #Malware #NorthKorea #OTX #OpenThreatExchange #Phishing #PowerShell #RAT #SMS #ShellCode #VBS #bot #AlienVault

Recent Attack Activity Analysis Using North Korea-Related Lures

APT-C-06 (Darkhotel) is an APT organization that has been active since at least 2007, targeting corporate executives, defense industries, and electronics sectors. In April 2026, the group launched phishing attacks using a decoy document titled 'North Korean Central Television Real-time Broadcasting Program Instructions.' The document instructs users to download an application for watching North Korean Central Television. By late May, attacks evolved to deliver malicious MSI files through phishing emails. These MSI files execute VBS code that creates scheduled tasks to download and execute PowerShell scripts, which then retrieve subsequent payloads. The malware employs ChaCha20 encryption and ultimately deploys shellcode. PowerShell has become a high-frequency component in APT-C-06's attack chain since 2025, handling payload downloads and persistence mechanisms.

Pulse ID: 6a7dc1fd395815126acd4647
Pulse Link: https://otx.alienvault.com/pulse/6a7dc1fd395815126acd4647
Pulse Author: AlienVault
Created: 2026-08-13 13:09:17

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Email #Encryption #ICS #InfoSec #Korea #Malware #NorthKorea #OTX #OpenThreatExchange #Phishing #PowerShell #RAT #SMS #ShellCode #VBS #bot #AlienVault

Recent Attack Activity Analysis Using North Korea-Related Lures

APT-C-06 (Darkhotel) is an APT organization that has been active since at least 2007, targeting corporate executives, defense industries, and electronics sectors. In April 2026, the group launched phishing attacks using a decoy document titled 'North Korean Central Television Real-time Broadcasting Program Instructions.' The document instructs users to download an application for watching North Korean Central Television. By late May, attacks evolved to deliver malicious MSI files through phishing emails. These MSI files execute VBS code that creates scheduled tasks to download and execute PowerShell scripts, which then retrieve subsequent payloads. The malware employs ChaCha20 encryption and ultimately deploys shellcode. PowerShell has become a high-frequency component in APT-C-06's attack chain since 2025, handling payload downloads and persistence mechanisms.

Pulse ID: 6a7dc1fd395815126acd4647
Pulse Link: https://otx.alienvault.com/pulse/6a7dc1fd395815126acd4647
Pulse Author: AlienVault
Created: 2026-08-13 13:09:17

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Email #Encryption #ICS #InfoSec #Korea #Malware #NorthKorea #OTX #OpenThreatExchange #Phishing #PowerShell #RAT #SMS #ShellCode #VBS #bot #AlienVault

Recent Attack Activity Analysis Using North Korea-Related Lures

APT-C-06 (Darkhotel) is an APT organization that has been active since at least 2007, targeting corporate executives, defense industries, and electronics sectors. In April 2026, the group launched phishing attacks using a decoy document titled 'North Korean Central Television Real-time Broadcasting Program Instructions.' The document instructs users to download an application for watching North Korean Central Television. By late May, attacks evolved to deliver malicious MSI files through phishing emails. These MSI files execute VBS code that creates scheduled tasks to download and execute PowerShell scripts, which then retrieve subsequent payloads. The malware employs ChaCha20 encryption and ultimately deploys shellcode. PowerShell has become a high-frequency component in APT-C-06's attack chain since 2025, handling payload downloads and persistence mechanisms.

Pulse ID: 6a7dc1fd395815126acd4647
Pulse Link: https://otx.alienvault.com/pulse/6a7dc1fd395815126acd4647
Pulse Author: AlienVault
Created: 2026-08-13 13:09:17

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#ChaCha20 #CyberSecurity #Email #Encryption #ICS #InfoSec #Korea #Malware #NorthKorea #OTX #OpenThreatExchange #Phishing #PowerShell #RAT #SMS #ShellCode #VBS #bot #AlienVault

DeadLock ransomware: Breaking down a Rust-based encryptor with decentralized recovery infrastructure

DeadLock is an emerging ransomware operation first observed in July 2025, distinguished by its use of decentralized infrastructure combining Session messaging network with blockchain-backed services for victim communications and data leak operations. The encryptor implements double extortion tactics, encrypting files while threatening to leak exfiltrated data, with over 80 organizations published on their leak site as of July 2026. The malware features a resource-aware throttling mechanism to maintain system responsiveness during encryption, language-based geofencing to avoid former Soviet and CIS countries, and hybrid cryptography using Curve25519 and XChaCha20. Its recovery ecosystem leverages Polygon blockchain for configuration storage, Session network for encrypted communications, and Wasabi file hosting, creating resilient infrastructure resistant to traditional takedown efforts. Multiple groups have deployed DeadLock, including affiliates of Lynx and INC ransomware ecosystems, targeting organization...

Pulse ID: 6a7a12d2aa28d8347ab323f6
Pulse Link: https://otx.alienvault.com/pulse/6a7a12d2aa28d8347ab323f6
Pulse Author: AlienVault
Created: 2026-08-10 18:05:06

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#BlockChain #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Malware #OTX #OpenThreatExchange #RAT #RCE #RansomWare #Rust #bot #AlienVault

DeadLock ransomware: Breaking down a Rust-based encryptor with decentralized recovery infrastructure

DeadLock is an emerging ransomware operation first observed in July 2025, distinguished by its use of decentralized infrastructure combining Session messaging network with blockchain-backed services for victim communications and data leak operations. The encryptor implements double extortion tactics, encrypting files while threatening to leak exfiltrated data, with over 80 organizations published on their leak site as of July 2026. The malware features a resource-aware throttling mechanism to maintain system responsiveness during encryption, language-based geofencing to avoid former Soviet and CIS countries, and hybrid cryptography using Curve25519 and XChaCha20. Its recovery ecosystem leverages Polygon blockchain for configuration storage, Session network for encrypted communications, and Wasabi file hosting, creating resilient infrastructure resistant to traditional takedown efforts. Multiple groups have deployed DeadLock, including affiliates of Lynx and INC ransomware ecosystems, targeting organization...

Pulse ID: 6a7a12d2aa28d8347ab323f6
Pulse Link: https://otx.alienvault.com/pulse/6a7a12d2aa28d8347ab323f6
Pulse Author: AlienVault
Created: 2026-08-10 18:05:06

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#BlockChain #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Malware #OTX #OpenThreatExchange #RAT #RCE #RansomWare #Rust #bot #AlienVault

DeadLock ransomware: Breaking down a Rust-based encryptor with decentralized recovery infrastructure

DeadLock is an emerging ransomware operation first observed in July 2025, distinguished by its use of decentralized infrastructure combining Session messaging network with blockchain-backed services for victim communications and data leak operations. The encryptor implements double extortion tactics, encrypting files while threatening to leak exfiltrated data, with over 80 organizations published on their leak site as of July 2026. The malware features a resource-aware throttling mechanism to maintain system responsiveness during encryption, language-based geofencing to avoid former Soviet and CIS countries, and hybrid cryptography using Curve25519 and XChaCha20. Its recovery ecosystem leverages Polygon blockchain for configuration storage, Session network for encrypted communications, and Wasabi file hosting, creating resilient infrastructure resistant to traditional takedown efforts. Multiple groups have deployed DeadLock, including affiliates of Lynx and INC ransomware ecosystems, targeting organization...

Pulse ID: 6a7a12d2aa28d8347ab323f6
Pulse Link: https://otx.alienvault.com/pulse/6a7a12d2aa28d8347ab323f6
Pulse Author: AlienVault
Created: 2026-08-10 18:05:06

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#BlockChain #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Malware #OTX #OpenThreatExchange #RAT #RCE #RansomWare #Rust #bot #AlienVault

DeadLock ransomware: Breaking down a Rust-based encryptor with decentralized recovery infrastructure

DeadLock is an emerging ransomware operation first observed in July 2025, distinguished by its use of decentralized infrastructure combining Session messaging network with blockchain-backed services for victim communications and data leak operations. The encryptor implements double extortion tactics, encrypting files while threatening to leak exfiltrated data, with over 80 organizations published on their leak site as of July 2026. The malware features a resource-aware throttling mechanism to maintain system responsiveness during encryption, language-based geofencing to avoid former Soviet and CIS countries, and hybrid cryptography using Curve25519 and XChaCha20. Its recovery ecosystem leverages Polygon blockchain for configuration storage, Session network for encrypted communications, and Wasabi file hosting, creating resilient infrastructure resistant to traditional takedown efforts. Multiple groups have deployed DeadLock, including affiliates of Lynx and INC ransomware ecosystems, targeting organization...

Pulse ID: 6a7a12d2aa28d8347ab323f6
Pulse Link: https://otx.alienvault.com/pulse/6a7a12d2aa28d8347ab323f6
Pulse Author: AlienVault
Created: 2026-08-10 18:05:06

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#BlockChain #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Malware #OTX #OpenThreatExchange #RAT #RCE #RansomWare #Rust #bot #AlienVault

DeadLock ransomware: Breaking down a Rust-based encryptor with decentralized recovery infrastructure

DeadLock is an emerging ransomware operation first observed in July 2025, distinguished by its use of decentralized infrastructure combining Session messaging network with blockchain-backed services for victim communications and data leak operations. The encryptor implements double extortion tactics, encrypting files while threatening to leak exfiltrated data, with over 80 organizations published on their leak site as of July 2026. The malware features a resource-aware throttling mechanism to maintain system responsiveness during encryption, language-based geofencing to avoid former Soviet and CIS countries, and hybrid cryptography using Curve25519 and XChaCha20. Its recovery ecosystem leverages Polygon blockchain for configuration storage, Session network for encrypted communications, and Wasabi file hosting, creating resilient infrastructure resistant to traditional takedown efforts. Multiple groups have deployed DeadLock, including affiliates of Lynx and INC ransomware ecosystems, targeting organization...

Pulse ID: 6a7a12d2aa28d8347ab323f6
Pulse Link: https://otx.alienvault.com/pulse/6a7a12d2aa28d8347ab323f6
Pulse Author: AlienVault
Created: 2026-08-10 18:05:06

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#BlockChain #ChaCha20 #CyberSecurity #Encryption #Extortion #ICS #InfoSec #Malware #OTX #OpenThreatExchange #RAT #RCE #RansomWare #Rust #bot #AlienVault

📢 MedusaHVNC : un RAT MaaS qui détourne des sessions navigateur via un bureau caché Windows
📝 🔍 **Contexte** : Le 27 juillet 2026, BlackFog publie une analyse technique détaillée de **MedusaHVNC**, un nouveau **remote access trojan (RAT)...
📖 cyberveille : https://cyberveille.ch/posts/2026-07-29-medusahvnc-un-rat-maas-qui-detourne-des-sessions-navigateur-via-un-bureau-cache-windows/
🌐 source : https://www.blackfog.com/medusahvnc-a-hidden-desktop
#AutoIt #ChaCha20 #Cyberveille

📢 Funky Mantis (DevMan) : analyse complète d'un RaaS centralisé ciblant hôpitaux et infrastructures critiques
📝 ## 🔍 Contexte

Le 21 juillet 2026, PRO...
📖 cyberveille : https://cyberveille.ch/posts/2026-07-23-funky-mantis-devman-analyse-complete-d-un-raas-centralise-ciblant-hopitaux-et-infrastructures-critiques/
🌐 source : https://catalyst.prodaft.com/public/report/funky-mantis-platform-coordination-and-locker-analysis/overview#paragraph-1000|0
#ChaCha20 #DevMan #Cyberveille

📢 Prinz Eugen : nouveau ransomware Go ciblant les fichiers récents sans note de rançon
📝 ## 🔍 Contexte

Source : BleepingComputer, publié le 20 juin 2026.
📖 cyberveille : https://cyberveille.ch/posts/2026-06-22-prinz-eugen-nouveau-ransomware-go-ciblant-les-fichiers-recents-sans-note-de-rancon/
🌐 source : https://www.bleepingcomputer.com/news/security/new-prinz-eugen-ransomware-prioritizes-recent-files-for-encryption/
#ChaCha20 #Go #Cyberveille

📢 Analyse technique du ransomware Payload : chiffrement ChaCha20/Curve25519 et anti-forensics avancés
📝 ## 🔍 Contexte

Source : DarkAtlas (https://darkatlas.io/blog/behind-payload-in-de...
📖 cyberveille : https://cyberveille.ch/posts/2026-05-28-analyse-technique-du-ransomware-payload-chiffrement-chacha20-curve25519-et-anti-forensics-avances/
🌐 source : https://darkatlas.io/blog/behind-payload-in-depth-technical-analysis-of-payload-ransomware
#ChaCha20 #Curve25519 #Cyberveille

📢 VECT 2.0 : un ransomware RaaS qui détruit irrémédiablement les fichiers par défaut de conception
📝 ## 🔍 Contexte

Publié le 28 avril 2026 par Check Point Research (CPR), cet article présente une analys...
📖 cyberveille : https://cyberveille.ch/posts/2026-04-29-vect-2-0-un-ransomware-raas-qui-detruit-irremediablement-les-fichiers-par-defaut-de-conception/
🌐 source : https://research.checkpoint.com/2026/vect-ransomware-by-design-wiper-by-accident/
#ChaCha20 #ESXi #Cyberveille

¯\_(ツ)_/¯

#cryptography #cypherpunk #chacha #pgp #gpg #chacha20 #xchacha20_poly1305 #aes #des #camellia #aegis256

Szyfrowanie danych, usuwanie backupów, zacieranie śladów… analiza ransomware Dire Wolf

Dire Wolf jest nową grupą przestępczą, której aktywność zaobserwowano w maju br. Pierwszymi ofiarami cyberprzestępców były firmy z sektora technologicznego, finansowego oraz budownictwa działające we Włoszech, Tajlandii, Australii oraz Indii. Działania cyberprzestępców ukierunkowane są głównie na zysk finansowy. W celu zwiększenia szansy na uzyskanie okupu, wykorzystują technikę double extortion, grożąc...

#Teksty #Chacha20 #Curbe25519 #Direwolf #DoubleExtortion #Ransomware

https://sekurak.pl/szyfrowanie-danych-usuwanie-backupow-zacieranie-sladow-analiza-ransomware-dire-wolf/

Szyfrowanie danych, usuwanie backupów, zacieranie śladów… analiza ransomware Dire Wolf

Dire Wolf jest nową grupą przestępczą, której aktywność zaobserwowano w maju br. Pierwszymi ofiarami cyberprzestępców były firmy z sektora technologicznego, finansowego oraz budownictwa działające we Włoszech, Tajlandii, Australii oraz Indii. Działania cyberprzestępców ukierunkowane są głównie na zysk finansowy. W celu zwiększenia szansy na uzyskanie okupu, wykorzystują technikę double extortion, grożąc...

#Teksty #Chacha20 #Curbe25519 #Direwolf #DoubleExtortion #Ransomware

https://sekurak.pl/szyfrowanie-danych-usuwanie-backupow-zacieranie-sladow-analiza-ransomware-dire-wolf/

Szyfrowanie danych, usuwanie backupów, zacieranie śladów… analiza ransomware Dire Wolf

Dire Wolf jest nową grupą przestępczą, której aktywność zaobserwowano w maju br. Pierwszymi ofiarami cyberprzestępców były firmy z sektora technologicznego, finansowego oraz budownictwa działające we Włoszech, Tajlandii, Australii oraz Indii. Działania cyberprzestępców ukierunkowane są głównie na zysk finansowy. W celu zwiększenia szansy na uzyskanie okupu, wykorzystują technikę double extortion, grożąc...

#Teksty #Chacha20 #Curbe25519 #Direwolf #DoubleExtortion #Ransomware

https://sekurak.pl/szyfrowanie-danych-usuwanie-backupow-zacieranie-sladow-analiza-ransomware-dire-wolf/

Szyfrowanie danych, usuwanie backupów, zacieranie śladów… analiza ransomware Dire Wolf

Dire Wolf jest nową grupą przestępczą, której aktywność zaobserwowano w maju br. Pierwszymi ofiarami cyberprzestępców były firmy z sektora technologicznego, finansowego oraz budownictwa działające we Włoszech, Tajlandii, Australii oraz Indii. Działania cyberprzestępców ukierunkowane są głównie na zysk finansowy. W celu zwiększenia szansy na uzyskanie okupu, wykorzystują technikę double extortion, grożąc...

#Teksty #Chacha20 #Curbe25519 #Direwolf #DoubleExtortion #Ransomware

https://sekurak.pl/szyfrowanie-danych-usuwanie-backupow-zacieranie-sladow-analiza-ransomware-dire-wolf/

Szyfrowanie danych, usuwanie backupów, zacieranie śladów… analiza ransomware Dire Wolf

Dire Wolf jest nową grupą przestępczą, której aktywność zaobserwowano w maju br. Pierwszymi ofiarami cyberprzestępców były firmy z sektora technologicznego, finansowego oraz budownictwa działające we Włoszech, Tajlandii, Australii oraz Indii. Działania cyberprzestępców ukierunkowane są głównie na zysk finansowy. W celu zwiększenia szansy na uzyskanie okupu, wykorzystują technikę double extortion, grożąc...

#Teksty #Chacha20 #Curbe25519 #Direwolf #DoubleExtortion #Ransomware

https://sekurak.pl/szyfrowanie-danych-usuwanie-backupow-zacieranie-sladow-analiza-ransomware-dire-wolf/

VanHelsing Ransomware: A Multi-Platform Threat with Sophisticated Tactics

https://thedefendopsdiaries.com/vanhelsing-ransomware-a-multi-platform-threat-with-sophisticated-tactics/

#vanhelsingransomware
#cybersecurity
#ransomware
#infosec
#chacha20

VanHelsing Ransomware: A Multi-Platform Threat with Sophisticated Tactics

https://thedefendopsdiaries.com/vanhelsing-ransomware-a-multi-platform-threat-with-sophisticated-tactics/

#vanhelsingransomware
#cybersecurity
#ransomware
#infosec
#chacha20

Interesting development of ransomware, however I find the title misleading as AES-256 isn't really "stronger" than ChaCha20: https://www.bleepingcomputer.com/news/security/new-qilin-ransomware-encryptor-features-stronger-encryption-evasion/

#ransomware #aes256 #chacha20 #encryption

Black Basta Ransomware: What You Need to Know

Black Basta is a ransomware-as-a-service group that emerged in April 2022, known for double extortion tactics. They target organizations globally, particularly in North America, Europe, and Australia, affecting over 500 entities across various industries. Initial access is gained through phishing, Qakbot, Cobalt Strike, and vulnerability exploitation. The group uses tools like Mimikatz for credential theft and lateral movement. Their process involves data exfiltration using Rclone, followed by file encryption using the ChaCha20 algorithm. The ransomware disables system defenses, deletes shadow copies, and leaves a ransom note. Black Basta has been linked to the FIN7 threat actor due to similarities in EDR evasion techniques.

Pulse ID: 66ed5a9c197554aebcf74460
Pulse Link: https://otx.alienvault.com/pulse/66ed5a9c197554aebcf74460
Pulse Author: AlienVault
Created: 2024-09-20 11:21:00

Be advised, this data is unverified and should be considered preliminary. Always do further verification.

#Australia #ChaCha20 #CobaltStrike #CyberSecurity #EDR #Encryption #Europe #Extortion #ICS #InfoSec #NorthAmerica #OTX #OpenThreatExchange #Phishing #Qakbot #RAT #RansomWare #RansomwareAsAService #Rclone #Vulnerability #bot #AlienVault

[Перевод] ChaCha, модификация Salsa20

ChaCha8 это 256-битный поточный шифр, основанный на 8-раунодовом шифре Salsa20/8. Новшества, привнесенные при работе от Salsa20/8 до ChaCha8, позволили улучшить перемежение бит за раунд, тем самым повысив стойкость к криптоанализу при сохранении, а иногда и уменьшении, времени требуемого на вычисления одного раунда. ChaCha12 и ChaCha20 являются аналогичными модификациями 12-раундового и 20-раундового шифров Salsa20/12 и Salsa20/20. В данной статье описывается семейство шифров ChaCha и объясняется разница между Salsa20 и ChaCha.

https://habr.com/ru/articles/784452/

#chacha20 #daniel_j_bernstein #перевод #перевод_с_английского

[Перевод] ChaCha, модификация Salsa20

ChaCha8 это 256-битный поточный шифр, основанный на 8-раунодовом шифре Salsa20/8. Новшества, привнесенные при работе от Salsa20/8 до ChaCha8, позволили улучшить перемежение бит за раунд, тем самым повысив стойкость к криптоанализу при сохранении, а иногда и уменьшении, времени требуемого на вычисления одного раунда. ChaCha12 и ChaCha20 являются аналогичными модификациями 12-раундового и 20-раундового шифров Salsa20/12 и Salsa20/20. В данной статье описывается семейство шифров ChaCha и объясняется разница между Salsa20 и ChaCha.

https://habr.com/ru/articles/784452/

#chacha20 #daniel_j_bernstein #перевод #перевод_с_английского

[DE] Ein bisschen Krikelkrakel für einen Kurzvortrag zu @rosenpass und postquantensicherer Kryptografie. Im Safe sind natürlich die sichersten Verfahren gegen regnerische post-quanten-Tage. :)

[EN] A handful of chicken scratch for a short talk about #RosenPass and post-quantum secure cryptography. When quantum computers finally rain down on our information systems, there’s different levels of security you can have.

#cryptography #shors #grovers #kyber #mceliece #chacha20

[DE] Ein bisschen Krikelkrakel für einen Kurzvortrag zu @rosenpass und postquantensicherer Kryptografie. Im Safe sind natürlich die sichersten Verfahren gegen regnerische post-quanten-Tage. :)

[EN] A handful of chicken scratch for a short talk about #RosenPass and post-quantum secure cryptography. When quantum computers finally rain down on our information systems, there’s different levels of security you can have.

#cryptography #shors #grovers #kyber #mceliece #chacha20

[DE] Ein bisschen Krikelkrakel für einen Kurzvortrag zu @rosenpass und postquantensicherer Kryptografie. Im Safe sind natürlich die sichersten Verfahren gegen regnerische post-quanten-Tage. :)

[EN] A handful of chicken scratch for a short talk about #RosenPass and post-quantum secure cryptography. When quantum computers finally rain down on our information systems, there’s different levels of security you can have.

#cryptography #shors #grovers #kyber #mceliece #chacha20

[DE] Ein bisschen Krikelkrakel für einen Kurzvortrag zu @rosenpass und postquantensicherer Kryptografie. Im Safe sind natürlich die sichersten Verfahren gegen regnerische post-quanten-Tage. :)

[EN] A handful of chicken scratch for a short talk about #RosenPass and post-quantum secure cryptography. When quantum computers finally rain down on our information systems, there’s different levels of security you can have.

#cryptography #shors #grovers #kyber #mceliece #chacha20

[DE] Ein bisschen Krikelkrakel für einen Kurzvortrag zu @rosenpass und postquantensicherer Kryptografie. Im Safe sind natürlich die sichersten Verfahren gegen regnerische post-quanten-Tage. :)

[EN] A handful of chicken scratch for a short talk about #RosenPass and post-quantum secure cryptography. When quantum computers finally rain down on our information systems, there’s different levels of security you can have.

#cryptography #shors #grovers #kyber #mceliece #chacha20

Best practice for sharing encrypted data between server and client

https://security.stackexchange.com/questions/267673/best-practice-for-sharing-encrypted-data-between-server-and-client

#encryption #chacha20 #rsa

Best practice for sharing encrypted data between server and client

https://security.stackexchange.com/questions/267673/best-practice-for-sharing-encrypted-data-between-server-and-client

#encryption #chacha20 #rsa

Best practice for sharing encrypted data between server and client

https://security.stackexchange.com/questions/267673/best-practice-for-sharing-encrypted-data-between-server-and-client

#encryption #chacha20 #rsa

Best practice for sharing encrypted data between server and client

https://security.stackexchange.com/questions/267673/best-practice-for-sharing-encrypted-data-between-server-and-client

#encryption #chacha20 #rsa

Which do you consider to be more secure?

(Yes, I understand that the symmetric cipher itself is almost never the weak point in any modern cryptosystem)

#AES #CHACHA20 #infosec #cryptography #encryption

Which do you consider to be more secure?

(Yes, I understand that the symmetric cipher itself is almost never the weak point in any modern cryptosystem)

#AES #CHACHA20 #infosec #cryptography #encryption

Which do you consider to be more secure?

(Yes, I understand that the symmetric cipher itself is almost never the weak point in any modern cryptosystem)

#AES #CHACHA20 #infosec #cryptography #encryption

Which do you consider to be more secure?

(Yes, I understand that the symmetric cipher itself is almost never the weak point in any modern cryptosystem)

#AES #CHACHA20 #infosec #cryptography #encryption

Which do you consider to be more secure?

(Yes, I understand that the symmetric cipher itself is almost never the weak point in any modern cryptosystem)

#AES #CHACHA20 #infosec #cryptography #encryption