BlackCat | Niveau de menace: critical | Type: Ransomware

Identifiants cryptographiques

SHA25640da7968b86654b9af30178540a4cacaf1c61476c4fcb95e438697bb5e47854f
MD5392cbe841c7bb1ead1a00213e750648c
Type de fichierelf
Taille5595.0 KB
Première observation2023-04-13
Nom du fichier40da7968b86654b9af30178540a4cacaf1c61476c4fcb95e438697bb5e47854f
Étiquettesblackcat, elf, Ransomware

Famille de malware: BlackCat

BlackCat, Rust ile yazılan ransomware'dir.

TypeRansomware
Langage de programmationRust
Plateforme cibleWindows/Linux
Protocole C2
ObjectifÇapraz platform ransomware
Année de première observation2021
Autres nomsALPHV

Indicateurs de menace (IOC)

  • SHA256: 40da7968b86654b9af30178540a4cacaf1c61476c4fcb95e438697bb5e47854f
  • MD5: 392cbe841c7bb1ead1a00213e750648c

Vous pouvez vérifier toutes les valeurs de hachage de cet échantillon sur VirusTotal.

Guide de nettoyage du système

  1. Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
  2. Ne payez pas la rançon — rien ne garantit la récupération des fichiers
  3. Mettez en quarantaine les disques concernés
  4. Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
  5. Essayez les outils de déchiffrement disponibles (projet NoMoreRansom)
  6. Signalez l’incident aux autorités (unité de cybercriminalité)
  7. Temiz bir yedekten kurtarın; yedeğiniz yoksa sürücüyü saklayın

Indices de règles YARA

rule BlackCat_SHA256 {
    meta:
        description = "BlackCat sample: 40da7968b86654b9"
        threat_level = "critical"
        first_seen = "2023-04-13"
    condition:
        hash.sha256(0, filesize) == "40da7968b86654b9af30178540a4cacaf1c61476c4fcb95e438697bb5e47854f"
}

BlackCat — Profil du malware

BlackCat, Rust ile yazılan ransomware'dir.

Type de malware
Ransomware
Langage de programmation
Rust
Protocole C2
Systèmes ciblés
Windows/Linux
Aussi connu sous (AKA)
ALPHV

Détails techniques

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 / Acteur de la menace

ALPHV (linked to DarkSide/BlackMatter)

Capacités et comportement

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

Liste IOC (2 indicateurs)

IOC — BlackCat
# SHA256 40da7968b86654b9af30178540a4cacaf1c61476c4fcb95e438697bb5e47854f # MD5 392cbe841c7bb1ead1a00213e750648c
TypeValeurNote
sha256 40da7968b86654b9af30178540a4cacaf1c61476c4fcb95e438697bb5e47854f Sample:BlackCat
md5 392cbe841c7bb1ead1a00213e750648c Sample:BlackCat
Tags
blackcatransomwaremalwarecriticalsha256hash-analizi