GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256a3b27f0f96a1c903ffb6b405eae4c5519943258a7b06db83ff432be86d22c502
MD5e015d4405cdf44a52ae76727424d1b89
File Typeexe
Size97.5 KB
First Seen2022-08-30
File Namea3b27f0f96a1c903ffb6b405eae4c5519943258a7b06db83ff432be86d22c502
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: a3b27f0f96a1c903ffb6b405eae4c5519943258a7b06db83ff432be86d22c502
  • MD5: e015d4405cdf44a52ae76727424d1b89

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: a3b27f0f96a1c903"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "a3b27f0f96a1c903ffb6b405eae4c5519943258a7b06db83ff432be86d22c502"
}

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 a3b27f0f96a1c903ffb6b405eae4c5519943258a7b06db83ff432be86d22c502 # MD5 e015d4405cdf44a52ae76727424d1b89
TypeValueNote
sha256 a3b27f0f96a1c903ffb6b405eae4c5519943258a7b06db83ff432be86d22c502 Sample:GandCrab
md5 e015d4405cdf44a52ae76727424d1b89 Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi