LockBit | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256d61fa625288f6f8786399c821fb51ec220a1de1877115521f206306b89461d83
MD5fc5b359d88f007f1e44c16a03b5d5809
File Typezip
Size422.4 KB
First Seen2023-08-15
File NameLBG_test.com_C3F7B91F25992E56_15.08.23_test.zip
Tagslockbit, Ransomware, zip

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: d61fa625288f6f8786399c821fb51ec220a1de1877115521f206306b89461d83
  • MD5: fc5b359d88f007f1e44c16a03b5d5809

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: d61fa625288f6f87"
        threat_level = "critical"
        first_seen = "2023-08-15"
    condition:
        hash.sha256(0, filesize) == "d61fa625288f6f8786399c821fb51ec220a1de1877115521f206306b89461d83"
}

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 d61fa625288f6f8786399c821fb51ec220a1de1877115521f206306b89461d83 # MD5 fc5b359d88f007f1e44c16a03b5d5809
TypeValueNote
sha256 d61fa625288f6f8786399c821fb51ec220a1de1877115521f206306b89461d83 Sample:LockBit
md5 fc5b359d88f007f1e44c16a03b5d5809 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