BlackCat | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA25659868f4b346bd401e067380cac69080709c86e06fae219bfb5bc17605a71ab3f
MD5fe16fa500584cb241532dc7cb75c1f53
File Typeexe
Size2997.0 KB
First Seen2021-12-10
File Nameblackcat_redacted.exe
Tagsblackcat, exe, Ransomware

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: 59868f4b346bd401e067380cac69080709c86e06fae219bfb5bc17605a71ab3f
  • MD5: fe16fa500584cb241532dc7cb75c1f53

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: 59868f4b346bd401"
        threat_level = "critical"
        first_seen = "2021-12-10"
    condition:
        hash.sha256(0, filesize) == "59868f4b346bd401e067380cac69080709c86e06fae219bfb5bc17605a71ab3f"
}

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 59868f4b346bd401e067380cac69080709c86e06fae219bfb5bc17605a71ab3f # MD5 fe16fa500584cb241532dc7cb75c1f53
TypeValueNote
sha256 59868f4b346bd401e067380cac69080709c86e06fae219bfb5bc17605a71ab3f
md5 fe16fa500584cb241532dc7cb75c1f53
Tags
blackcatransomwaremalwarecriticalsha256analizzenginleştirilmiş