GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256aa870398bb638731beb5c4dccd55506b96aab695e301a28485894f31d8712d91
MD5896692921a692468fd3b4c8b92084ed8
File Typeexe
Size70.0 KB
First Seen2022-08-30
File Nameaa870398bb638731beb5c4dccd55506b96aab695e301a28485894f31d8712d91
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, en yaygın eski ransomware'dir.

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

Threat Indicators (IOC)

  • SHA256: aa870398bb638731beb5c4dccd55506b96aab695e301a28485894f31d8712d91
  • MD5: 896692921a692468fd3b4c8b92084ed8

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: aa870398bb638731"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "aa870398bb638731beb5c4dccd55506b96aab695e301a28485894f31d8712d91"
}

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 aa870398bb638731beb5c4dccd55506b96aab695e301a28485894f31d8712d91 # MD5 896692921a692468fd3b4c8b92084ed8
TypeValueNote
sha256 aa870398bb638731beb5c4dccd55506b96aab695e301a28485894f31d8712d91 Sample:GandCrab
md5 896692921a692468fd3b4c8b92084ed8 Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi