BlackBasta | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256a9503a3d998e705c37d3bec7fea0ff188bcf7e753833c8b4b195e590c4ed9625
MD5a2086f41bc06adc69517bc0d9c07bf6e
File Typeexe
Size830.9 KB
First Seen2022-11-03
File Namea9503a3d998e705c37d3bec7fea0ff188bcf7e753833c8b4b195e590c4ed9625
TagsBlackBasta, exe

Malware Family: BlackBasta

Black Basta, Conti üyeleriyle ilişkilidir.

TypeRansomware
Programming LanguageC++
Target PlatformWindows/Linux
C2 Protocol
PurposeConti türevi ransomware
First Seen Year2022

Threat Indicators (IOC)

  • SHA256: a9503a3d998e705c37d3bec7fea0ff188bcf7e753833c8b4b195e590c4ed9625
  • MD5: a2086f41bc06adc69517bc0d9c07bf6e

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 BlackBasta_SHA256 {
    meta:
        description = "BlackBasta sample: a9503a3d998e705c"
        threat_level = "critical"
        first_seen = "2022-11-03"
    condition:
        hash.sha256(0, filesize) == "a9503a3d998e705c37d3bec7fea0ff188bcf7e753833c8b4b195e590c4ed9625"
}

BlackBasta — Malware Profile

Black Basta ransomware grubu loaer/dropper. Microsoft Office Setup Engine (ose.pdb) olarak gizlenir. Global\OfficeSourceEngine64Mutex sahte mutex. Self-modifying .ex_cod section. Minimal import + runtime GetProcAddress API cozme. WinHttp C2. Token manipulasyonu.

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 — BlackBasta
# SHA256 a9503a3d998e705c37d3bec7fea0ff188bcf7e753833c8b4b195e590c4ed9625 # MD5 a2086f41bc06adc69517bc0d9c07bf6e
TypeValueNote
sha256 a9503a3d998e705c37d3bec7fea0ff188bcf7e753833c8b4b195e590c4ed9625 Sample:BlackBasta
md5 a2086f41bc06adc69517bc0d9c07bf6e Sample:BlackBasta

C2 Servers (1 recorded servers for this family)

Address Type Port Protocol Status Country
aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.onion domain 443 — inactive —

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

Tags
blackbastaransomwaremalwarecriticalsha256hash-analizi