bumblebee | d81cfd03427f725fa3b091cb85d021930f85676633466bfa5b45feecc9b281ae

General

Target

sample/documents.lnk
Size

2KB
MD5

5d48299aa0f1b1b03af9e88b49991a2f
SHA1

8f8f3380f47eeef5219a4e00ed9f9b9c7f7a8c97
SHA256

8d7326d4224dbc0237d7b46969a9b65ce46ad5309627ef9704833cae388f56b1
SHA512

f8cc047e90af1dcf32e7ab49b48fdeead1c379cc22f21c8223ee1045961ce6524aebcde9f02d461942730d673d26b4edbc6eef7320aacfc3412c8e524263cf07

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-1-5-21-1819626980-2277161760-1023733287-1000\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
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe
1160	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 1928	536	cmd.exe	29
PID 536 wrote to memory of 1928	536	cmd.exe	29
PID 536 wrote to memory of 1928	536	cmd.exe	29
PID 1928 wrote to memory of 268	1928	cmd.exe	30
PID 1928 wrote to memory of 268	1928	cmd.exe	30
PID 1928 wrote to memory of 268	1928	cmd.exe	30
PID 268 wrote to memory of 1160	268	cmd.exe	32
PID 268 wrote to memory of 1160	268	cmd.exe	32
PID 268 wrote to memory of 1160	268	cmd.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\sample\documents.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:536
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start docs.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /K docs.bat
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:268
  - - C:\Windows\system32\rundll32.exe
      RunDll32 palerma3.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:1160

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

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Downloads

memory/536-54-0x000007FEFB721000-0x000007FEFB723000-memory.dmp

Filesize
8KB

Download
memory/1160-94-0x00000000023B0000-0x00000000024C7000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads