bumblebee | d81cfd03427f725fa3b091cb85d021930f85676633466bfa5b45feecc9b281ae

General

Target

sample/docs.bat
Size

39B
MD5

0e5835052158f65cc9d1416a1f26d61d
SHA1

3688a00aa2087f6f7e5b8679c22897e51d0aa063
SHA256

90eba3d92798bc8afa33bb056f79d35fb3efabf6cc87053b13a04254db352a30
SHA512

c4da33631a27436156bbb32a299ebe7017b9c60a5f6fc38e3d111acc2089dd8733ec0f4ed7a6a6b52163c462709c5d1950115dff81758e502458746a21f81499

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

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService	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

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-1-5-21-790309383-526510583-3802439154-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe
1900	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 1900	2036	cmd.exe	27
PID 2036 wrote to memory of 1900	2036	cmd.exe	27
PID 2036 wrote to memory of 1900	2036	cmd.exe	27

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\sample\docs.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\system32\rundll32.exe
  RunDll32 palerma3.dll,nHqRHTKVae
  2⤵
  - 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:1900