GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256c817357b6427222d55643a979a3d83e68d3a72d7961381b382bb01ab9947938d
MD549fc147ee1154036e56904bfd77ced5f
File Typeexe
Size16384.0 KB
First Seen2023-04-28
File Name2023-04-27_49fc147ee1154036e56904bfd77ced5f_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: c817357b6427222d55643a979a3d83e68d3a72d7961381b382bb01ab9947938d
  • MD5: 49fc147ee1154036e56904bfd77ced5f

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: c817357b6427222d"
        threat_level = "critical"
        first_seen = "2023-04-28"
    condition:
        hash.sha256(0, filesize) == "c817357b6427222d55643a979a3d83e68d3a72d7961381b382bb01ab9947938d"
}

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 c817357b6427222d55643a979a3d83e68d3a72d7961381b382bb01ab9947938d # MD5 49fc147ee1154036e56904bfd77ced5f
TypeValueNote
sha256 c817357b6427222d55643a979a3d83e68d3a72d7961381b382bb01ab9947938d Sample:GandCrab
md5 49fc147ee1154036e56904bfd77ced5f Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi