bumblebee | 48f664496412e4da22a0d539aca9fe98737a194103d55ff58ea15dae95935d90

Analysis

max time kernel
122s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
04-05-2022 20:30

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General

Target

9339fe09ff7f8cc9c853d6d6a5171858.dll
Size

2.6MB
MD5

9339fe09ff7f8cc9c853d6d6a5171858
SHA1

b5ddc9a0b1e7d639a0d71c6627337995b3a02ed6
SHA256

48f664496412e4da22a0d539aca9fe98737a194103d55ff58ea15dae95935d90
SHA512

b75c9d33b22403526e12642ecba9b9fa07afd4101865398e4956ff18e200c18528724a9d26c27182c829c62e87e513496fcbafa9a55b9dc1729ca74ba1f276f0

Score

10^/10

bumblebee evasion trojan

Malware Config

Extracted

Family

bumblebee

23.83.134.136:443

138.201.190.52:443

Attributes

group_id
25html

AwIWMFX6fJ

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan bumblebee
Enumerates VirtualBox registry keys 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 3 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe
3576	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9339fe09ff7f8cc9c853d6d6a5171858.dll,#1
1⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious behavior: EnumeratesProcesses
PID:3576

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3576-130-0x00000243ECF10000-0x00000243ED15B000-memory.dmp

Filesize
2.3MB

Download
memory/3576-131-0x00007FFC98F40000-0x00007FFC98F50000-memory.dmp

Filesize
64KB

Download