GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256b537e0857701bfd573e2650a0fc0123651fdfd2b3fea1def24e1e62b01c7d911
MD5d4f4dac5b58234eb2169489c1738fa33
File Typeexe
Size73.5 KB
First Seen2022-08-30
File Nameb537e0857701bfd573e2650a0fc0123651fdfd2b3fea1def24e1e62b01c7d911
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: b537e0857701bfd573e2650a0fc0123651fdfd2b3fea1def24e1e62b01c7d911
  • MD5: d4f4dac5b58234eb2169489c1738fa33

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: b537e0857701bfd5"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "b537e0857701bfd573e2650a0fc0123651fdfd2b3fea1def24e1e62b01c7d911"
}

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 b537e0857701bfd573e2650a0fc0123651fdfd2b3fea1def24e1e62b01c7d911 # MD5 d4f4dac5b58234eb2169489c1738fa33
TypeValueNote
sha256 b537e0857701bfd573e2650a0fc0123651fdfd2b3fea1def24e1e62b01c7d911 Sample:GandCrab
md5 d4f4dac5b58234eb2169489c1738fa33 Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi