bumblebee | 8f47c3962a7c418bae71fec42bbca9524b72f8f0fd2dd81d1175138f7d20b2f7

General

Target

8f47c3962a7c418bae71fec42bbca9524b72f8f0fd2dd81d1175138f7d20b2f7.dll
Size

2.7MB
MD5

8335ad591afdfdd65f90536b9ff15597
SHA1

bfc8b6501dfac4583979f12552535c2923b881bf
SHA256

8f47c3962a7c418bae71fec42bbca9524b72f8f0fd2dd81d1175138f7d20b2f7
SHA512

b438383f722afc65cf5dce113a405f4feec3f275f513f01a7f7a8f6150bbce78a669015b552ed3b7c798f7538444e1a6b751cc7e290445ef1404b9e34ff4a473
SSDEEP

49152:K1GTzcSFGB0tWWYLGPFn7aRmNkk/yCAgQ2MccAnpgSpWaI7+lNOl7AmWzOCI9e:K1G3lExTLGtomNkk/yCAgQ2MccAnpgSR

Score

10^/10

bumblebee all0604 evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

ALL0604

C2

192.236.198.63:443

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
13	4568	rundll32.exe
36	4568	rundll32.exe
44	4568	rundll32.exe
47	4568	rundll32.exe
49	4568	rundll32.exe
50	4568	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

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-1-5-21-1904519900-954640453-4250331663-1000\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

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe
4568	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8f47c3962a7c418bae71fec42bbca9524b72f8f0fd2dd81d1175138f7d20b2f7.dll,#1
1⤵
- 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:4568

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1036 --field-trial-handle=2260,i,9938964625802268469,1928462186077019554,262144 --variations-seed-version /prefetch:8
1⤵
PID:2184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

4

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

4

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4568-0-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-1-0x00007FFA82710000-0x00007FFA82905000-memory.dmp

Filesize
2.0MB

Download
memory/4568-2-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-3-0x00007FFA82710000-0x00007FFA82905000-memory.dmp

Filesize
2.0MB

Download
memory/4568-4-0x00007FFA82710000-0x00007FFA82905000-memory.dmp

Filesize
2.0MB

Download
memory/4568-5-0x00007FFA82710000-0x00007FFA82905000-memory.dmp

Filesize
2.0MB

Download
memory/4568-6-0x00007FFA82710000-0x00007FFA82905000-memory.dmp

Filesize
2.0MB

Download
memory/4568-7-0x00007FFA82710000-0x00007FFA82905000-memory.dmp

Filesize
2.0MB

Download
memory/4568-8-0x00007FFA82700000-0x00007FFA82710000-memory.dmp

Filesize
64KB

Download
memory/4568-9-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-10-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-11-0x00007FFA82710000-0x00007FFA82905000-memory.dmp

Filesize
2.0MB

Download
memory/4568-12-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-13-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-14-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-15-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-16-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-17-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-18-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-19-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-20-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download
memory/4568-21-0x000002317C190000-0x000002317C3DB000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads