GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256b683c781641bc3c6c2bd475035b2296264252f8c43813170257d98f2b856703c
MD535637884d717544b8fef50ac5ec7bd75
File Typeexe
Size69.5 KB
First Seen2022-08-30
File Nameb683c781641bc3c6c2bd475035b2296264252f8c43813170257d98f2b856703c
Tagsexe, Gandcrab

Malware Family: GandCrab

GandCrab, MaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: b683c781641bc3c6c2bd475035b2296264252f8c43813170257d98f2b856703c
  • MD5: 35637884d717544b8fef50ac5ec7bd75

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: b683c781641bc3c6"
        threat_level = "critical"
        first_seen = "2022-08-30"
    condition:
        hash.sha256(0, filesize) == "b683c781641bc3c6c2bd475035b2296264252f8c43813170257d98f2b856703c"
}

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 b683c781641bc3c6c2bd475035b2296264252f8c43813170257d98f2b856703c # MD5 35637884d717544b8fef50ac5ec7bd75
TypeValueNote
sha256 b683c781641bc3c6c2bd475035b2296264252f8c43813170257d98f2b856703c Sample:GandCrab
md5 35637884d717544b8fef50ac5ec7bd75 Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi