BazarLoader | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA25642aeef1b5f9d53105bd3d9076b7634e1eed53f89c9e3577426f4c51441e4fca4
MD521a57dbd1dad6aec8edbbaeddabac81b
File Typexlsx
Size267.4 KB
First Seen2021-05-19
File Namecancel_sub_JPL12345678901234.xlsb
Tagsbazacall, BazaLoader, BazarCall, BazarLoader, excel, macros, TrickBot

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: 42aeef1b5f9d53105bd3d9076b7634e1eed53f89c9e3577426f4c51441e4fca4
  • MD5: 21a57dbd1dad6aec8edbbaeddabac81b

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: 42aeef1b5f9d5310"
        threat_level = "high"
        first_seen = "2021-05-19"
    condition:
        hash.sha256(0, filesize) == "42aeef1b5f9d53105bd3d9076b7634e1eed53f89c9e3577426f4c51441e4fca4"
}

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 42aeef1b5f9d53105bd3d9076b7634e1eed53f89c9e3577426f4c51441e4fca4 # MD5 21a57dbd1dad6aec8edbbaeddabac81b
TypeValueNote
sha256 42aeef1b5f9d53105bd3d9076b7634e1eed53f89c9e3577426f4c51441e4fca4 Sample:BazarLoader
md5 21a57dbd1dad6aec8edbbaeddabac81b Sample:BazarLoader
Tags
bazarloaderloadermalwarehighsha256hash-analizi