GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256b4557e40d9e148da5a516bd79edea4880a3331cbb4bcf8f1321ee33f3d0addba
MD5a7db527472e773d997073071a794d496
File Typeexe
Size73.5 KB
First Seen2022-08-30
File Nameb4557e40d9e148da5a516bd79edea4880a3331cbb4bcf8f1321ee33f3d0addba
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: b4557e40d9e148da5a516bd79edea4880a3331cbb4bcf8f1321ee33f3d0addba
  • MD5: a7db527472e773d997073071a794d496

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: b4557e40d9e148da"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "b4557e40d9e148da5a516bd79edea4880a3331cbb4bcf8f1321ee33f3d0addba"
}

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 b4557e40d9e148da5a516bd79edea4880a3331cbb4bcf8f1321ee33f3d0addba # MD5 a7db527472e773d997073071a794d496
TypeValueNote
sha256 b4557e40d9e148da5a516bd79edea4880a3331cbb4bcf8f1321ee33f3d0addba Sample:GandCrab
md5 a7db527472e773d997073071a794d496 Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi