Matanbuchus | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA256c66e705f800b30f591505be1c429c2e01b7851eb60bda14767d9d871151822e5
MD5c547de465c47116ac5b98e8c0d76ecf4
File Typejs
Size42.2 KB
First Seen2024-03-07
File NameOpen_Document.PDF.js
Tagsjs, matanbuchus

Malware Family: Matanbuchus

Matanbuchus, MaaS loader'dır.

TypeLoader
Programming LanguageC++
Target PlatformWindows
C2 ProtocolHTTPS
PurposeMaaS loader
First Seen Year2021

Threat Indicators (IOC)

  • SHA256: c66e705f800b30f591505be1c429c2e01b7851eb60bda14767d9d871151822e5
  • MD5: c547de465c47116ac5b98e8c0d76ecf4

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Disconnect the system from the network — the loader may be downloading more malware
  2. Analyze every downloaded payload
  3. Inspect all network traffic and cut suspicious connections
  4. Run a full antivirus scan
  5. Consider reimaging the system

YARA Rule Hints

rule Matanbuchus_SHA256 {
    meta:
        description = "Matanbuchus sample: c66e705f800b30f5"
        threat_level = "high"
        first_seen = "2024-03-07"
    condition:
        hash.sha256(0, filesize) == "c66e705f800b30f591505be1c429c2e01b7851eb60bda14767d9d871151822e5"
}

Matanbuchus — Malware Profile

Matanbuchus loader. Session key özel kripto el sikisma. no malloc support C runtime. CreateMutexW.

Malware Type
Loader
Programming Language
C++
C2 Protocol
HTTPS
Target Systems
Windows

Technical Details

Loader ailesi: HTTP/HTTPS C2, payload sifre cozme ve bellek icerisinde yükleme, anti-sandbox/VM kontrolleri, process injection, persistence mekanizmasi, yükü indirme ve calistirma zinciri

Capabilities & Behavior

Payload İndirme
Süreç Enjeksiyonu
Modüler Mimari
Kimlik Bilgisi Hırsızlığı
Yanal Hareket
Kalıcılık
Anti-VM/Sandbox
İkincil Payload Dağıtımı

IOC List (2 indicators)

IOC — Matanbuchus
# SHA256 c66e705f800b30f591505be1c429c2e01b7851eb60bda14767d9d871151822e5 # MD5 c547de465c47116ac5b98e8c0d76ecf4
TypeValueNote
sha256 c66e705f800b30f591505be1c429c2e01b7851eb60bda14767d9d871151822e5 Sample:Matanbuchus
md5 c547de465c47116ac5b98e8c0d76ecf4 Sample:Matanbuchus
Tags
matanbuchusloadermalwarehighsha256hash-analizi