GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256b5b7a42562c575880215b047453dedda4bfa963b6fde22c881a5d68d40eb8b48
MD5a1f481c1c4be74e017d4d0c60294b3d8
File Typeexe
Size73.5 KB
First Seen2022-08-30
File Nameb5b7a42562c575880215b047453dedda4bfa963b6fde22c881a5d68d40eb8b48
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: b5b7a42562c575880215b047453dedda4bfa963b6fde22c881a5d68d40eb8b48
  • MD5: a1f481c1c4be74e017d4d0c60294b3d8

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: b5b7a42562c57588"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "b5b7a42562c575880215b047453dedda4bfa963b6fde22c881a5d68d40eb8b48"
}

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 b5b7a42562c575880215b047453dedda4bfa963b6fde22c881a5d68d40eb8b48 # MD5 a1f481c1c4be74e017d4d0c60294b3d8
TypeValueNote
sha256 b5b7a42562c575880215b047453dedda4bfa963b6fde22c881a5d68d40eb8b48 Sample:GandCrab
md5 a1f481c1c4be74e017d4d0c60294b3d8 Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi