Bumblebee | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA256def313ac6db22932e42ae1d62c1ce190c620a06bde637258bd79e21561b41163
MD5557dc6188b5bd3f5385489efd5eb9c9e
File Typeexe
Size994.0 KB
First Seen2022-11-09
File Name0411r_cr3.dll
TagsBUMBLEBEE, exe

Malware Family: Bumblebee

Bumblebee, BazarLoader'ın halefidir.

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

Threat Indicators (IOC)

  • SHA256: def313ac6db22932e42ae1d62c1ce190c620a06bde637258bd79e21561b41163
  • MD5: 557dc6188b5bd3f5385489efd5eb9c9e

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: def313ac6db22932"
        threat_level = "high"
        first_seen = "2022-11-09"
    condition:
        hash.sha256(0, filesize) == "def313ac6db22932e42ae1d62c1ce190c620a06bde637258bd79e21561b41163"
}

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 def313ac6db22932e42ae1d62c1ce190c620a06bde637258bd79e21561b41163 # MD5 557dc6188b5bd3f5385489efd5eb9c9e
TypeValueNote
sha256 def313ac6db22932e42ae1d62c1ce190c620a06bde637258bd79e21561b41163 Sample:Bumblebee
md5 557dc6188b5bd3f5385489efd5eb9c9e 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