BazarLoader | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA25642ee070ac0de1e32e2f436764560c31655f0e81aeb2f842a895cca3405fb2c7f
MD5ade047b047a762846f7df54eed3dd90a
File Typexlsx
Size157.2 KB
First Seen2021-07-29
File Namecase_L0275390548.xlsb
Tagsbazacall, BazaLoader, BazarCall, BazarLoader, xlsx

Malware Family: BazarLoader

BazarLoader, gizli TrickBot grubu loader'dır.

TypeLoader
Programming LanguageC++
Target PlatformWindows
C2 ProtocolHTTPS
PurposeCobalt Strike staging
First Seen Year2020
AliasesBazarBackdoor

Threat Indicators (IOC)

  • SHA256: 42ee070ac0de1e32e2f436764560c31655f0e81aeb2f842a895cca3405fb2c7f
  • MD5: ade047b047a762846f7df54eed3dd90a

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 BazarLoader_SHA256 {
    meta:
        description = "BazarLoader sample: 42ee070ac0de1e32"
        threat_level = "high"
        first_seen = "2021-07-29"
    condition:
        hash.sha256(0, filesize) == "42ee070ac0de1e32e2f436764560c31655f0e81aeb2f842a895cca3405fb2c7f"
}

BazarLoader — Malware Profile

BazarLoader BazaLoader TrickBot group loader. xigcgabbzkswmicmkatl shared Trigona mutex. DGA 20-char campaign IDs.

Malware Type
Loader
Programming Language
C++
C2 Protocol
HTTPS
Target Systems
Windows
Also Known As (AKA)
BazarBackdoor

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 — BazarLoader
# SHA256 42ee070ac0de1e32e2f436764560c31655f0e81aeb2f842a895cca3405fb2c7f # MD5 ade047b047a762846f7df54eed3dd90a
TypeValueNote
sha256 42ee070ac0de1e32e2f436764560c31655f0e81aeb2f842a895cca3405fb2c7f Sample:BazarLoader
md5 ade047b047a762846f7df54eed3dd90a Sample:BazarLoader
Tags
bazarloaderloadermalwarehighsha256hash-analizi