bumblebee | 60706250a0809275086da8fa70f1541b8a5da2c1e7fee09572add49c3a5ef89c

General

Target

documents.lnk
Size

2KB
MD5

c89d0d285c1a7e2433849b541ddd6dcd
SHA1

92b348df912a354fafc6788403bd6dc9f081a923
SHA256

e105a1d7fae4d0cb63d068b328d83d41e07b7b27b2bfdc65b2e47c5dfb90466b
SHA512

abf62809d26fb85561735b2d99e30618458ba2298c5e2de834f0313dee419c2c3c75fabcb517c84914a2b93d624814e32e8c24768b83a710a752d84f9d77d55d

Score

10^/10

bumblebee 6rr evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

6rr

C2

145.239.30.26:443

194.37.97.135:443

185.62.58.238:443

176.107.177.124:443

192.236.160.254:443

192.236.192.85:443

185.62.56.201:443

103.175.16.59:443

198.98.57.91:443

154.56.0.221:443

64.44.101.250:443

103.175.16.117:443

63.141.248.253:443

192.236.194.136:443

193.239.84.247:443

192.236.161.191:443

185.156.172.123:443

54.38.136.187:443

64.44.102.6:443

192.119.64.21:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan bumblebee

Enumerates VirtualBox registry keys 2 TTPs 5 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

rundll32.exe

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

Processes:

rundll32.exe

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

Processes:

rundll32.exe

description ioc process

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

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

Processes:

rundll32.exe

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

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

Processes:

cmd.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Wine rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	cmd.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	process
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe
3148	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.execmd.execmd.exe

description	pid	process	target process
PID 3488 wrote to memory of 3992	3488	cmd.exe	cmd.exe
PID 3488 wrote to memory of 3992	3488	cmd.exe	cmd.exe
PID 3992 wrote to memory of 2228	3992	cmd.exe	cmd.exe
PID 3992 wrote to memory of 2228	3992	cmd.exe	cmd.exe
PID 2228 wrote to memory of 3148	2228	cmd.exe	rundll32.exe
PID 2228 wrote to memory of 3148	2228	cmd.exe	rundll32.exe

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:3488

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c start docum.bat
2⤵
- Suspicious use of WriteProcessMemory
PID:3992

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /K docum.bat
3⤵
- Suspicious use of WriteProcessMemory
PID:2228

C:\Windows\system32\rundll32.exe
RunDll32 parelmo2.dll,nHqRHTKVae
4⤵
- 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
- Identifies Wine through registry keys
- Suspicious behavior: EnumeratesProcesses
PID:3148

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

4

T1497

Credential Access

Discovery

Query Registry

6

T1012

Virtualization/Sandbox Evasion

4

T1497

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/2228-131-0x0000000000000000-mapping.dmp

Download
memory/3148-132-0x0000000000000000-mapping.dmp

Download
memory/3148-133-0x0000028413A70000-0x0000028413B87000-memory.dmp

Filesize
1.1MB

Download
memory/3148-134-0x00007FF809FC0000-0x00007FF809FD0000-memory.dmp

Filesize
64KB

Download
memory/3992-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads