bumblebee | ebe801a9a2cd62d435f37fee0be39812d32f23157129e1966bdcc8a7ed9a1c79

General

Target

documents.lnk
Size

2KB
MD5

690b95081eb2c3eab4f10f027cb2aca8
SHA1

b5c7a3e0190126a5c738a39f60e81705b8fd1e7b
SHA256

10f2cdf35e577ec35e2ac8e1f6a36d97a5dbcf8298dd430bd9777bfb9a9564dd
SHA512

2b7262f82c93d5ab6e32fb5e711e015a60a2e70366321c53d7434300e6e7bc248634ccdad2619cf8c4077b6b39ce5dca6a3c226a06aa647a71dbfbf781428397

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\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

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
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe
292	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 916 wrote to memory of 580	916	cmd.exe	28
PID 916 wrote to memory of 580	916	cmd.exe	28
PID 916 wrote to memory of 580	916	cmd.exe	28
PID 580 wrote to memory of 576	580	cmd.exe	29
PID 580 wrote to memory of 576	580	cmd.exe	29
PID 580 wrote to memory of 576	580	cmd.exe	29
PID 576 wrote to memory of 292	576	cmd.exe	31
PID 576 wrote to memory of 292	576	cmd.exe	31
PID 576 wrote to memory of 292	576	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\documents.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:916
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start docum.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:580
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /K docum.bat
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:576
  - - 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:292

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/292-91-0x0000000002410000-0x0000000002527000-memory.dmp

Filesize
1.1MB

Download
memory/916-54-0x000007FEFB6E1000-0x000007FEFB6E3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads