Matanbuchus | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA256dbac4888cb2be8a41986d0992abcb7215556da786e9b12759f6a39eede97b5f5
MD532d515e10d19e25546986e51c567b4fd
File Typedll
Size562.9 KB
First Seen2021-12-09
File Name2021-12-07-Matanbuchus-DLL-Volet4.ocx-thru-Volet6.ocx.bin
Tagsdll, matanbuchus, Quakbot, SALES e MAINTENANCE LIMITED, signed

Malware Family: Matanbuchus

Matanbuchus, MaaS loader'dır.

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

Threat Indicators (IOC)

  • SHA256: dbac4888cb2be8a41986d0992abcb7215556da786e9b12759f6a39eede97b5f5
  • MD5: 32d515e10d19e25546986e51c567b4fd

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: dbac4888cb2be8a4"
        threat_level = "high"
        first_seen = "2021-12-09"
    condition:
        hash.sha256(0, filesize) == "dbac4888cb2be8a41986d0992abcb7215556da786e9b12759f6a39eede97b5f5"
}

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 dbac4888cb2be8a41986d0992abcb7215556da786e9b12759f6a39eede97b5f5 # MD5 32d515e10d19e25546986e51c567b4fd
TypeValueNote
sha256 dbac4888cb2be8a41986d0992abcb7215556da786e9b12759f6a39eede97b5f5 Sample:Matanbuchus
md5 32d515e10d19e25546986e51c567b4fd Sample:Matanbuchus
Tags
matanbuchusloadermalwarehighsha256hash-analizi