BlackCat | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA25612138a12e35563461860d8c39d80e7cbf80aced9a3f197bf7e6a452a70e07048
MD571189ed24caec9d7d9890844ea464902
File Typeexe
Size3005.5 KB
First Seen2022-03-20
File Name12138a12e35563461860d8c39d80e7cbf80aced9a3f197bf7e6a452a70e07048
TagsALPHV MORPH, blackcat, 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: 12138a12e35563461860d8c39d80e7cbf80aced9a3f197bf7e6a452a70e07048
  • MD5: 71189ed24caec9d7d9890844ea464902

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: 12138a12e3556346"
        threat_level = "critical"
        first_seen = "2022-03-20"
    condition:
        hash.sha256(0, filesize) == "12138a12e35563461860d8c39d80e7cbf80aced9a3f197bf7e6a452a70e07048"
}

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 12138a12e35563461860d8c39d80e7cbf80aced9a3f197bf7e6a452a70e07048 # MD5 71189ed24caec9d7d9890844ea464902
TypeValueNote
sha256 12138a12e35563461860d8c39d80e7cbf80aced9a3f197bf7e6a452a70e07048 Sample:BlackCat
md5 71189ed24caec9d7d9890844ea464902 Sample:BlackCat
Tags
blackcatransomwaremalwarecriticalsha256hash-analizi