GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256b4a1c88772cdbcc4560fbfa531a3a325ba0b0cb3cf142ed360892383239b2954
MD5547bd569faa80599a58e2473909d17c0
File Typeexe
Size70.0 KB
First Seen2022-08-30
File Nameb4a1c88772cdbcc4560fbfa531a3a325ba0b0cb3cf142ed360892383239b2954
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: b4a1c88772cdbcc4560fbfa531a3a325ba0b0cb3cf142ed360892383239b2954
  • MD5: 547bd569faa80599a58e2473909d17c0

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: b4a1c88772cdbcc4"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "b4a1c88772cdbcc4560fbfa531a3a325ba0b0cb3cf142ed360892383239b2954"
}

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 b4a1c88772cdbcc4560fbfa531a3a325ba0b0cb3cf142ed360892383239b2954 # MD5 547bd569faa80599a58e2473909d17c0
TypeValueNote
sha256 b4a1c88772cdbcc4560fbfa531a3a325ba0b0cb3cf142ed360892383239b2954 Sample:GandCrab
md5 547bd569faa80599a58e2473909d17c0 Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi