Bumblebee | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA25691dce68945ccb267fd8b6b7f6543d5e04cb31498ba1e29f7b231d453e3df4f26
MD5e199248a3b307bdfea83339c4033b15f
File Typeexe
Size2560.5 KB
First Seen2022-09-23
File Namejbixstcf.dll
TagsBUMBLEBEE, dll, exe, TA551

Malware Family: Bumblebee

Bumblebee, BazarLoader'ın halefidir.

TypeLoader
Programming LanguageC++
Target PlatformWindows
C2 ProtocolHTTPS
PurposeCobalt Strike dropper
First Seen Year2022

Threat Indicators (IOC)

  • SHA256: 91dce68945ccb267fd8b6b7f6543d5e04cb31498ba1e29f7b231d453e3df4f26
  • MD5: e199248a3b307bdfea83339c4033b15f

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 Bumblebee_SHA256 {
    meta:
        description = "Bumblebee sample: 91dce68945ccb267"
        threat_level = "high"
        first_seen = "2022-09-23"
    condition:
        hash.sha256(0, filesize) == "91dce68945ccb267fd8b6b7f6543d5e04cb31498ba1e29f7b231d453e3df4f26"
}

BumbleBee — Malware Profile

Bumblebee, 2022 den aktif C++ loader. Conti/Lazarus bağlantılı. ISO/VHD/LNK dağıtım. Cobalt Strike dropper. Anti-debug.

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 — Bumblebee
# SHA256 91dce68945ccb267fd8b6b7f6543d5e04cb31498ba1e29f7b231d453e3df4f26 # MD5 e199248a3b307bdfea83339c4033b15f
TypeValueNote
sha256 91dce68945ccb267fd8b6b7f6543d5e04cb31498ba1e29f7b231d453e3df4f26 Sample:Bumblebee
md5 e199248a3b307bdfea83339c4033b15f Sample:Bumblebee

C2 Servers (3 recorded servers for this family)

Address Type Port Protocol Status Country
odoca.com domain 443 HTTPS active —
108.61.55.248 ip 443 HTTPS inactive US
45.8.146.78 ip 443 HTTPS inactive RU

C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.

Tags
bumblebeeloadermalwarehighsha256hash-analizi