GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256c399e2a4f0cd0ca84bd71e94e243e5e9e72da057e155ccf7db9fbcb7000ac163
MD5b62dc92ad02324f24758b4cfafe38b1c
File Typeexe
Size70.0 KB
First Seen2023-04-19
File Name2023-04-18_b62dc92ad02324f24758b4cfafe38b1c_gandcrab
TagsGandcrab

Malware Family: GandCrab

GandCrab, en yaygın eski ransomware'dir.

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

Threat Indicators (IOC)

  • SHA256: c399e2a4f0cd0ca84bd71e94e243e5e9e72da057e155ccf7db9fbcb7000ac163
  • MD5: b62dc92ad02324f24758b4cfafe38b1c

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: c399e2a4f0cd0ca8"
        threat_level = "critical"
        first_seen = "2023-04-19"
    condition:
        hash.sha256(0, filesize) == "c399e2a4f0cd0ca84bd71e94e243e5e9e72da057e155ccf7db9fbcb7000ac163"
}

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 c399e2a4f0cd0ca84bd71e94e243e5e9e72da057e155ccf7db9fbcb7000ac163 # MD5 b62dc92ad02324f24758b4cfafe38b1c
TypeValueNote
sha256 c399e2a4f0cd0ca84bd71e94e243e5e9e72da057e155ccf7db9fbcb7000ac163 Sample:GandCrab
md5 b62dc92ad02324f24758b4cfafe38b1c Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi