LockBit | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256dd55d238ff30d685f2f5fa84cdd7a5343963dab0f81cd997cad57507af35df6d
MD53da0a77ec650bbeb593f6366d381f4d0
File Typeexe
Size147.0 KB
First Seen2025-07-16
File Namevdurhi.exe
TagsBlackMatter, exe, lockbit

Malware Family: LockBit

LockBit, yaygın ransomware'dir.

TypeRansomware
Programming LanguageC++
Target PlatformWindows/Linux
C2 Protocol
PurposeRansomware
First Seen Year2019
AliasesLockBit 3.0

Threat Indicators (IOC)

  • SHA256: dd55d238ff30d685f2f5fa84cdd7a5343963dab0f81cd997cad57507af35df6d
  • MD5: 3da0a77ec650bbeb593f6366d381f4d0

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 LockBit_SHA256 {
    meta:
        description = "LockBit sample: dd55d238ff30d685"
        threat_level = "critical"
        first_seen = "2025-07-16"
    condition:
        hash.sha256(0, filesize) == "dd55d238ff30d685f2f5fa84cdd7a5343963dab0f81cd997cad57507af35df6d"
}

LockBit — Malware Profile

LockBit 3.0 (LockBit Black). bl3.exe builder. CryptProtectMemory DPAPI key protection. WinRAR SFX delivery.

Malware Type
Ransomware
Programming Language
C++
C2 Protocol
Target Systems
Windows/Linux
Also Known As (AKA)
LockBit 3.0

Technical Details

C, RSA-2048 + AES-256 sifreleme (hibrid), vssadmin ile shadow copy silme, Active Directory enum, LockBit Builder ile ozel varyant uretimi, multi-threaded encryption, ransom note TXT/HTA

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 — LockBit
# SHA256 dd55d238ff30d685f2f5fa84cdd7a5343963dab0f81cd997cad57507af35df6d # MD5 3da0a77ec650bbeb593f6366d381f4d0
TypeValueNote
sha256 dd55d238ff30d685f2f5fa84cdd7a5343963dab0f81cd997cad57507af35df6d Sample:LockBit
md5 3da0a77ec650bbeb593f6366d381f4d0 Sample:LockBit

C2 Servers (2 recorded servers for this family)

Address Type Port Protocol Status Country
35.227.107.189 ip 443 HTTPS sinkholed US
89.185.85.239 ip 443 HTTPS sinkholed NL

C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.

Tags
lockbitransomwaremalwarecriticalsha256hash-analizi