Matanbuchus | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA256c6e9477fd41ac9822269486c77d0f5d560ee2f558148ca95cf1de39dea034186
MD588ea40f4fcac430458373c92e7935610
File Typemsi
Size224.0 KB
First Seen2022-06-16
File NameSCAN-287004.pdf.msi
Tagsmatanbuchus, msi, signed, Westeast Tech Consulting Corp.

Malware Family: Matanbuchus

Matanbuchus, MaaS loader'dır.

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

Threat Indicators (IOC)

  • SHA256: c6e9477fd41ac9822269486c77d0f5d560ee2f558148ca95cf1de39dea034186
  • MD5: 88ea40f4fcac430458373c92e7935610

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: c6e9477fd41ac982"
        threat_level = "high"
        first_seen = "2022-06-16"
    condition:
        hash.sha256(0, filesize) == "c6e9477fd41ac9822269486c77d0f5d560ee2f558148ca95cf1de39dea034186"
}

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 c6e9477fd41ac9822269486c77d0f5d560ee2f558148ca95cf1de39dea034186 # MD5 88ea40f4fcac430458373c92e7935610
TypeValueNote
sha256 c6e9477fd41ac9822269486c77d0f5d560ee2f558148ca95cf1de39dea034186 Sample:Matanbuchus
md5 88ea40f4fcac430458373c92e7935610 Sample:Matanbuchus
Tags
matanbuchusloadermalwarehighsha256hash-analizi