bumblebee | c3148c6c4b0ecce9c7d07ba57dea96e35acf5f2ef47396c48339bb9a3a07e390

Analysis

max time kernel
147s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10-04-2024 14:02

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General

Target

documents.lnk
Size

1KB
MD5

189af415c774eff91c5368360a5d9119
SHA1

08834c5f7e31c2fb16ef5debe68bfc5e28f30ae5
SHA256

ddacc92ca1120b76f8adae0480761b41e24361ac1667b13a7342e665189d627b
SHA512

1238e91256f7818bc014469e72292a59703479ba9600b943e02044653497a5691f37204538c9c10d46e9ce0b1776b813acc8fe68448898d9d8870d36ad7b268c

Score

10^/10

bumblebee 2104r evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

2104r

28.11.143.222:443

71.1.188.122:443

49.12.241.35:443

89.222.221.14:443

185.33.87.53:443

108.62.118.56:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a loader malware written in C++.
loader bumblebee

Enumerates VirtualBox registry keys 2 TTPs 5 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	rundll32.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	rundll32.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	rundll32.exe

Blocklisted process makes network request 6 IoCs

flow	pid	Process
14	224	rundll32.exe
33	224	rundll32.exe
37	224	rundll32.exe
40	224	rundll32.exe
42	224	rundll32.exe
49	224	rundll32.exe

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	cmd.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-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Wine	rundll32.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe
224	rundll32.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5016 wrote to memory of 3796	5016	cmd.exe	87
PID 5016 wrote to memory of 3796	5016	cmd.exe	87
PID 3796 wrote to memory of 224	3796	cmd.exe	88
PID 3796 wrote to memory of 224	3796	cmd.exe	88

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\documents.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5016
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start rundll32.exe hqwco.dll,rBgTBiTTDW
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3796
- - C:\Windows\system32\rundll32.exe
    rundll32.exe hqwco.dll,rBgTBiTTDW
    3⤵
    - Enumerates VirtualBox registry keys
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Looks for VirtualBox Guest Additions in registry
    - Blocklisted process makes network request
    - Checks BIOS information in registry
    - Identifies Wine through registry keys
    - Checks for VirtualBox DLLs, possible anti-VM trick
    - Suspicious behavior: EnumeratesProcesses
    PID:224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Replay Monitor

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Downloads

memory/224-0-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-2-0x00007FFF7DE70000-0x00007FFF7E065000-memory.dmp

Filesize
2.0MB

Download
memory/224-1-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-3-0x00007FFF7DE70000-0x00007FFF7E065000-memory.dmp

Filesize
2.0MB

Download
memory/224-4-0x00007FFF7DE70000-0x00007FFF7E065000-memory.dmp

Filesize
2.0MB

Download
memory/224-5-0x00007FFF7DE60000-0x00007FFF7DE70000-memory.dmp

Filesize
64KB

Download
memory/224-6-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-7-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-8-0x00007FFF7DE70000-0x00007FFF7E065000-memory.dmp

Filesize
2.0MB

Download
memory/224-9-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-10-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-11-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-12-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-13-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-14-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-15-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-16-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-17-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-18-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download
memory/224-19-0x000002BAC01D0000-0x000002BAC041B000-memory.dmp

Filesize
2.3MB

Download