GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256591b923f4ad2e988146b8e1e47aa0b17ea5860659359f5bcaf3b8791c0d0e763
MD58309472fd91401aee52042d5dc77e70b
File Typeexe
Size73.5 KB
First Seen2022-08-30
File Name591b923f4ad2e988146b8e1e47aa0b17ea5860659359f5bcaf3b8791c0d0e763
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: 591b923f4ad2e988146b8e1e47aa0b17ea5860659359f5bcaf3b8791c0d0e763
  • MD5: 8309472fd91401aee52042d5dc77e70b

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: 591b923f4ad2e988"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "591b923f4ad2e988146b8e1e47aa0b17ea5860659359f5bcaf3b8791c0d0e763"
}

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 591b923f4ad2e988146b8e1e47aa0b17ea5860659359f5bcaf3b8791c0d0e763 # MD5 8309472fd91401aee52042d5dc77e70b
TypeValueNote
sha256 591b923f4ad2e988146b8e1e47aa0b17ea5860659359f5bcaf3b8791c0d0e763 Sample:GandCrab
md5 8309472fd91401aee52042d5dc77e70b Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi