GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256c561a7e4a3fcdfb8da0d665865c4e11539c7d80964823def87082d9eb0e87a08
MD5facfc28b56b4d45fca159a4944b6f428
File Typeexe
Size73.5 KB
First Seen2022-08-30
File Namec561a7e4a3fcdfb8da0d665865c4e11539c7d80964823def87082d9eb0e87a08
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

TypeRansomware
Programming LanguageC
Target PlatformWindows
C2 ProtocolHTTP
PurposeMaaS ransomware
First Seen Year2018

Threat Indicators (IOC)

  • SHA256: c561a7e4a3fcdfb8da0d665865c4e11539c7d80964823def87082d9eb0e87a08
  • MD5: facfc28b56b4d45fca159a4944b6f428

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 GandCrab_SHA256 {
    meta:
        description = "GandCrab sample: c561a7e4a3fcdfb8"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "c561a7e4a3fcdfb8da0d665865c4e11539c7d80964823def87082d9eb0e87a08"
}

GandCrab — Malware Profile

GandCrab, 2018-2019 aktif RaaS ailesidir. 1.5 milyar USD hasar. RSA+Salsa20. Haziran 2019 kapandi. REvil oncusu.

Malware Type
Ransomware
Programming Language
C
C2 Protocol
HTTP
Target Systems
Windows

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 — GandCrab
# SHA256 c561a7e4a3fcdfb8da0d665865c4e11539c7d80964823def87082d9eb0e87a08 # MD5 facfc28b56b4d45fca159a4944b6f428
TypeValueNote
sha256 c561a7e4a3fcdfb8da0d665865c4e11539c7d80964823def87082d9eb0e87a08 Sample:GandCrab
md5 facfc28b56b4d45fca159a4944b6f428 Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi