GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256a9904c2337a9da922093cc51e185dc1ef2744db6ccacf46968b36698ce6a0f1d
MD52680bb33c8f1185b2f42c1320cb6e1dc
File Typeexe
Size155.5 KB
First Seen2023-08-22
File Name2023-08-22_2680bb33c8f1185b2f42c1320cb6e1dc_gandcrab
TagsGandcrab

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: a9904c2337a9da922093cc51e185dc1ef2744db6ccacf46968b36698ce6a0f1d
  • MD5: 2680bb33c8f1185b2f42c1320cb6e1dc

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: a9904c2337a9da92"
        threat_level = "critical"
        first_seen = "2023-08-22"
    condition:
        hash.sha256(0, filesize) == "a9904c2337a9da922093cc51e185dc1ef2744db6ccacf46968b36698ce6a0f1d"
}

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 a9904c2337a9da922093cc51e185dc1ef2744db6ccacf46968b36698ce6a0f1d # MD5 2680bb33c8f1185b2f42c1320cb6e1dc
TypeValueNote
sha256 a9904c2337a9da922093cc51e185dc1ef2744db6ccacf46968b36698ce6a0f1d Sample:GandCrab
md5 2680bb33c8f1185b2f42c1320cb6e1dc Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi