GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256a57be4465ee19adec49af1d259c6daeac7eb8fbbe00ef8a89fe55097336cf86b
MD5bfcad8cb3e990cdfe24fa2e6ba8ce5b5
File Typeexe
Size73.5 KB
First Seen2022-08-30
File Namea57be4465ee19adec49af1d259c6daeac7eb8fbbe00ef8a89fe55097336cf86b
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: a57be4465ee19adec49af1d259c6daeac7eb8fbbe00ef8a89fe55097336cf86b
  • MD5: bfcad8cb3e990cdfe24fa2e6ba8ce5b5

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: a57be4465ee19ade"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "a57be4465ee19adec49af1d259c6daeac7eb8fbbe00ef8a89fe55097336cf86b"
}

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 a57be4465ee19adec49af1d259c6daeac7eb8fbbe00ef8a89fe55097336cf86b # MD5 bfcad8cb3e990cdfe24fa2e6ba8ce5b5
TypeValueNote
sha256 a57be4465ee19adec49af1d259c6daeac7eb8fbbe00ef8a89fe55097336cf86b Sample:GandCrab
md5 bfcad8cb3e990cdfe24fa2e6ba8ce5b5 Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi