GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256a1544a1a4f582fce864102cdc698f08b41bbd6c9cec4fd42356e52a190b970a4
MD5c1f5ee99eb3eca6fe74adcfac2f81c3e
File Typeexe
Size70.0 KB
First Seen2022-08-30
File Namea1544a1a4f582fce864102cdc698f08b41bbd6c9cec4fd42356e52a190b970a4
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: a1544a1a4f582fce864102cdc698f08b41bbd6c9cec4fd42356e52a190b970a4
  • MD5: c1f5ee99eb3eca6fe74adcfac2f81c3e

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: a1544a1a4f582fce"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "a1544a1a4f582fce864102cdc698f08b41bbd6c9cec4fd42356e52a190b970a4"
}

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 a1544a1a4f582fce864102cdc698f08b41bbd6c9cec4fd42356e52a190b970a4 # MD5 c1f5ee99eb3eca6fe74adcfac2f81c3e
TypeValueNote
sha256 a1544a1a4f582fce864102cdc698f08b41bbd6c9cec4fd42356e52a190b970a4 Sample:GandCrab
md5 c1f5ee99eb3eca6fe74adcfac2f81c3e Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi