Bumblebee | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA25627282e66e73fb247ba92a91f500b52d641549a8388e35155938b0d2da3abd537
MD5b56613d4572421fa09ef57587fcfccc3
File Typeexe
Size2591.5 KB
First Seen2025-05-13
File NameRVTools.msi.dll
TagsBUMBLEBEE, dll, exe

Malware Family: Bumblebee

Bumblebee, loader'dır.

TypeLoader
Programming LanguageC++
Target PlatformWindows
C2 ProtocolHTTPS
PurposeLoader
First Seen Year2022

Threat Indicators (IOC)

  • SHA256: 27282e66e73fb247ba92a91f500b52d641549a8388e35155938b0d2da3abd537
  • MD5: b56613d4572421fa09ef57587fcfccc3

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: 27282e66e73fb247"
        threat_level = "high"
        first_seen = "2025-05-13"
    condition:
        hash.sha256(0, filesize) == "27282e66e73fb247ba92a91f500b52d641549a8388e35155938b0d2da3abd537"
}

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 27282e66e73fb247ba92a91f500b52d641549a8388e35155938b0d2da3abd537 # MD5 b56613d4572421fa09ef57587fcfccc3
TypeValueNote
sha256 27282e66e73fb247ba92a91f500b52d641549a8388e35155938b0d2da3abd537 Sample:Bumblebee
md5 b56613d4572421fa09ef57587fcfccc3 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