BlackCat | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA2563d457b11a195ea28d5ce30afa350c5e718302a310da4eb0746406dba270f55b3
MD5e864260c84b434bbdb0f544a9a79ec75
File Typeexe
Size2991.0 KB
First Seen2022-10-12
File Name3d457b11a195ea28d5ce30afa350c5e718302a310da4eb0746406dba270f55b3
Tagsblackcat

Malware Family: BlackCat

BlackCat, Rust ile yazılan ransomware'dir.

TypeRansomware
Programming LanguageRust
Target PlatformWindows/Linux
C2 Protocol
PurposeÇapraz platform ransomware
First Seen Year2021
AliasesALPHV

Threat Indicators (IOC)

  • SHA256: 3d457b11a195ea28d5ce30afa350c5e718302a310da4eb0746406dba270f55b3
  • MD5: e864260c84b434bbdb0f544a9a79ec75

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. Yetkililere ihbarda bulunun
  7. Temiz bir yedekten kurtarın

YARA Rule Hints

rule BlackCat_SHA256 {
    meta:
        description = "BlackCat sample: 3d457b11a195ea28"
        threat_level = "critical"
        first_seen = "2022-10-12"
    condition:
        hash.sha256(0, filesize) == "3d457b11a195ea28d5ce30afa350c5e718302a310da4eb0746406dba270f55b3"
}

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 3d457b11a195ea28d5ce30afa350c5e718302a310da4eb0746406dba270f55b3 # MD5 e864260c84b434bbdb0f544a9a79ec75
TypeValueNote
sha256 3d457b11a195ea28d5ce30afa350c5e718302a310da4eb0746406dba270f55b3
md5 e864260c84b434bbdb0f544a9a79ec75
Tags
blackcatransomwaremalwarecriticalsha256analizzenginleştirilmiş