bumblebee | ae4ba1f9405b23c6c5a290061d366240ed28ee657b9f3fa91adab2a7880a456c

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

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\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-1-5-21-1083475884-596052423-1669053738-1000\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

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 924	2016	cmd.exe	29
PID 2016 wrote to memory of 924	2016	cmd.exe	29
PID 2016 wrote to memory of 924	2016	cmd.exe	29
PID 924 wrote to memory of 776	924	cmd.exe	30
PID 924 wrote to memory of 776	924	cmd.exe	30
PID 924 wrote to memory of 776	924	cmd.exe	30
PID 776 wrote to memory of 1872	776	cmd.exe	32
PID 776 wrote to memory of 1872	776	cmd.exe	32
PID 776 wrote to memory of 1872	776	cmd.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\documents.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start docum.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:924
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /K docum.bat
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:776
  - - 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:1872

Network

MITRE ATT&CK Enterprise v6

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/1872-94-0x0000000002460000-0x0000000002577000-memory.dmp

Filesize
1.1MB

Download
memory/2016-54-0x000007FEFC221000-0x000007FEFC223000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads