GandCrab | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA2567c91058133a449a21c3032d23853121b90fc990a8f5a33e8eb12497230a49399
MD5ffd686da1923301cdc6190a15052f15f
File Typeexe
Size155.5 KB
First Seen2023-08-22
File Name2023-08-22_ffd686da1923301cdc6190a15052f15f_gandcrab
TagsGandcrab, Ransomware

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: 7c91058133a449a21c3032d23853121b90fc990a8f5a33e8eb12497230a49399
  • MD5: ffd686da1923301cdc6190a15052f15f

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: 7c91058133a449a2"
        threat_level = "critical"
        first_seen = "2023-08-22"
    condition:
        hash.sha256(0, filesize) == "7c91058133a449a21c3032d23853121b90fc990a8f5a33e8eb12497230a49399"
}

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 7c91058133a449a21c3032d23853121b90fc990a8f5a33e8eb12497230a49399 # MD5 ffd686da1923301cdc6190a15052f15f
TypeValueNote
sha256 7c91058133a449a21c3032d23853121b90fc990a8f5a33e8eb12497230a49399 Sample:GandCrab
md5 ffd686da1923301cdc6190a15052f15f Sample:GandCrab
Tags
gandcrabransomwaremalwarecriticalsha256hash-analizi