BlackCat | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256942946c6ae139b1f1efc91262f91034542eb75b80c3c66c10d69dda014d706d6
MD519ebc459a9e2837659272da0b2164684
File Typeexe
Size3050.0 KB
First Seen2022-06-21
File Name942946c6ae139b1f1efc91262f91034542eb75b80c3c66c10d69dda014d706d6
Tagsblackcat, BlackCat Indicators, exe

Malware Family: BlackCat

BlackCat, Rust ransomware'dir.

TypeRansomware
Programming LanguageRust
Target PlatformWindows/Linux
C2 Protocol
PurposeRansomware
First Seen Year2021
AliasesALPHV

Threat Indicators (IOC)

  • SHA256: 942946c6ae139b1f1efc91262f91034542eb75b80c3c66c10d69dda014d706d6
  • MD5: 19ebc459a9e2837659272da0b2164684

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
  2. Do not pay the ransom — there is no guarantee your files will be restored
  3. Quarantine the affected drives
  4. Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
  5. Try available decryptor tools (the NoMoreRansom project)
  6. Report the incident to the authorities (cybercrime unit)
  7. Temiz bir yedekten kurtarın; yedeğiniz yoksa sürücüyü saklayın

YARA Rule Hints

rule BlackCat_SHA256 {
    meta:
        description = "BlackCat sample: 942946c6ae139b1f"
        threat_level = "critical"
        first_seen = "2022-06-21"
    condition:
        hash.sha256(0, filesize) == "942946c6ae139b1f1efc91262f91034542eb75b80c3c66c10d69dda014d706d6"
}

BlackCat — Malware Profile

BlackCat, Rust ile yazılan ransomware'dir.

Malware Type
Ransomware
Programming Language
Rust
C2 Protocol
Target Systems
Windows/Linux
Also Known As (AKA)
ALPHV

Technical Details

BlackCat (ALPHV) is the first major ransomware written in Rust, enabling cross-platform attacks on Windows, Linux, and VMware ESXi. Emerged November 2021 as a RaaS operation. Triple extortion: file encryption + data exfiltration + DDoS threats. Uses AES-128 (CTR mode) or ChaCha20 for file encryption with RSA-2048 for key protection. Highly configurable JSON config: target extensions, excluded paths, credential stuffing. Uses intermittent encryption (partial file encryption) for speed. ALPHV 3.0 (Sphynx) introduced EXMATTER data exfiltration tool. FBI disrupted December 2023 with decryption keys released for 500 victims. Believed operated by former DarkSide/BlackMatter members.

Attribution / Threat Actor

ALPHV (linked to DarkSide/BlackMatter)

Capabilities & Behavior

Dosya Şifreleme (AES/RSA)
Gölge Kopya Silme
Yedek Kaldırma
Fidye Notu Oluşturma
Kalıcılık Sağlama
Ağ Paylaşımı Şifreleme
Anti-Analiz Teknikleri
Çift Gasp (Data Leak)

IOC List (2 indicators)

IOC — BlackCat
# SHA256 942946c6ae139b1f1efc91262f91034542eb75b80c3c66c10d69dda014d706d6 # MD5 19ebc459a9e2837659272da0b2164684
TypeValueNote
sha256 942946c6ae139b1f1efc91262f91034542eb75b80c3c66c10d69dda014d706d6 Sample:BlackCat
md5 19ebc459a9e2837659272da0b2164684 Sample:BlackCat
Tags
blackcatransomwaremalwarecriticalsha256hash-analizi