LockBit | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284
MD5f8a72ea0a65f86a865a8b09b49f76fb0
File Typeexe
Size657.5 KB
First Seen2025-06-25
File Namec4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284
Tagsexe, Expiro, lockbit, lockbit4, lockbit4.0, Ransomware

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: c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284
  • MD5: f8a72ea0a65f86a865a8b09b49f76fb0

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: c4b27044ec7b2f44"
        threat_level = "critical"
        first_seen = "2025-06-25"
    condition:
        hash.sha256(0, filesize) == "c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284"
}

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 c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284 # MD5 f8a72ea0a65f86a865a8b09b49f76fb0
TypeValueNote
sha256 c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284 Sample:LockBit
md5 f8a72ea0a65f86a865a8b09b49f76fb0 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