Babuk | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA256ae409f3d835b583fd60657a894398589d3f712dcb72c85d8057fc81571d73cec
MD54cb9ab499d6632d1e34cc87424eee40b
File Typeexe
Size45324.1 KB
First Seen2026-05-09
File Namesigma.exe
TagsBabuk, exe

Malware Family: Babuk

Babuk, ESXi'yi şifreler.

TypeRansomware
Programming LanguageC++
Target PlatformWindows/Linux
C2 Protocol
PurposeESXi şifreleme
First Seen Year2021

Threat Indicators (IOC)

  • SHA256: ae409f3d835b583fd60657a894398589d3f712dcb72c85d8057fc81571d73cec
  • MD5: 4cb9ab499d6632d1e34cc87424eee40b

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 Babuk_SHA256 {
    meta:
        description = "Babuk sample: ae409f3d835b583f"
        threat_level = "high"
        first_seen = "2026-05-09"
    condition:
        hash.sha256(0, filesize) == "ae409f3d835b583fd60657a894398589d3f712dcb72c85d8057fc81571d73cec"
}

Babuk — Malware Profile

Babuk, 2021 aktif .NET tabanlı ransomware ailesidir. Kaynak kodu sızdırılmış. ESXi ve Windows versiyonları.

Malware Type
Ransomware
Programming Language
C++
C2 Protocol
Target Systems
Windows/Linux

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 — Babuk
# SHA256 ae409f3d835b583fd60657a894398589d3f712dcb72c85d8057fc81571d73cec # MD5 4cb9ab499d6632d1e34cc87424eee40b
TypeValueNote
sha256 ae409f3d835b583fd60657a894398589d3f712dcb72c85d8057fc81571d73cec Sample:Babuk
md5 4cb9ab499d6632d1e34cc87424eee40b Sample:Babuk
Tags
babukransomwaremalwarehighsha256hash-analizi