Matanbuchus | Threat Level: high | Type: Loader
Cryptographic Identifiers
| SHA256 | 18bd1ae701ff57a6d1119f18c53350688f41cbac0ea1ad0cb73234f6ab733404 |
|---|---|
| MD5 | 3489702c1298d45a5964aadd4a5753a6 |
| File Type | xlsx |
| Size | 234.8 KB |
| First Seen | 2021-11-15 |
| File Name | CLMCP 9215 Nov 15 (383).xlsb |
| Tags | matanbuchus, xlsb, xlsx |
Malware Family: Matanbuchus
Matanbuchus, MaaS loader'dır.
| Type | Loader |
|---|---|
| Programming Language | C++ |
| Target Platform | Windows |
| C2 Protocol | HTTPS |
| Purpose | MaaS loader |
| First Seen Year | 2021 |
Threat Indicators (IOC)
- SHA256:
18bd1ae701ff57a6d1119f18c53350688f41cbac0ea1ad0cb73234f6ab733404 - MD5:
3489702c1298d45a5964aadd4a5753a6
You can verify all hash values of this sample on VirusTotal.
System Cleanup Guide
- Disconnect the system from the network — the loader may be downloading more malware
- Analyze every downloaded payload
- Inspect all network traffic and cut suspicious connections
- Run a full antivirus scan
- Consider reimaging the system
YARA Rule Hints
rule Matanbuchus_SHA256 {
meta:
description = "Matanbuchus sample: 18bd1ae701ff57a6"
threat_level = "high"
first_seen = "2021-11-15"
condition:
hash.sha256(0, filesize) == "18bd1ae701ff57a6d1119f18c53350688f41cbac0ea1ad0cb73234f6ab733404"
}
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
18bd1ae701ff57a6d1119f18c53350688f41cbac0ea1ad0cb73234f6ab733404
# MD5
3489702c1298d45a5964aadd4a5753a6
| Type | Value | Note |
|---|---|---|
| sha256 | 18bd1ae701ff57a6d1119f18c53350688f41cbac0ea1ad0cb73234f6ab733404 | Sample:Matanbuchus |
| md5 | 3489702c1298d45a5964aadd4a5753a6 | Sample:Matanbuchus |