bumblebee | a5f9fff484cdf95a86a88d94c45f69fae77bb92a996bcd1ffb5b01a182101036

General

Target

file-ea1bb905-6718-4e55-8cb2-4f2cfbf2cd23.lnk
Size

1KB
MD5

25804c14d838ee802da26c6c394059ff
SHA1

8f9f2311b1962bbf2d433a419b5b6dd8c0788366
SHA256

63f8f0291ea92dbb363dec39ec1b6ccfce854ea4f7abdb9b8a2907594d7dca32
SHA512

484151f2d04ae782fe8fcacc09f33e31ae56dfaaa87e1d23e751651abb6ad4cf9f6d0f0f1377d30096ae822bd3222f8f196bd876871048f813409d76fcfea0ee

Score

10^/10

bumblebee 1010 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1010

C2

51.83.250.153:443

194.135.33.40:443

185.145.97.141:443

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\VideoBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\SOFTWARE\Wine rundll32.exe
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

1176 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 opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

Processes:

rundll32.exe

pid	process
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe
1176	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.execmd.exe

description	pid	process	target process
PID 1148 wrote to memory of 268	1148	cmd.exe	cmd.exe
PID 1148 wrote to memory of 268	1148	cmd.exe	cmd.exe
PID 1148 wrote to memory of 268	1148	cmd.exe	cmd.exe
PID 268 wrote to memory of 1176	268	cmd.exe	rundll32.exe
PID 268 wrote to memory of 1176	268	cmd.exe	rundll32.exe
PID 268 wrote to memory of 1176	268	cmd.exe	rundll32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\file-ea1bb905-6718-4e55-8cb2-4f2cfbf2cd23.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1148

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c start 93059f5c-b5de-43c5-9547-6c9c4b53455a.png && start ru^n^d^l^l3^2 dd204ab6-b2ca-4f8c-8f6b-b70093a2ec80.Vpy,minload
2⤵
- Suspicious use of WriteProcessMemory
PID:268

C:\Windows\system32\rundll32.exe
rundll32 dd204ab6-b2ca-4f8c-8f6b-b70093a2ec80.Vpy,minload
3⤵
- 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 use of NtCreateThreadExHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:1176

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

5

T1012

Virtualization/Sandbox Evasion

4

T1497

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/268-89-0x0000000000000000-mapping.dmp

Download
memory/268-143-0x0000000000380000-0x0000000000390000-memory.dmp

Filesize
64KB

Download
memory/1148-54-0x000007FEFB5D1000-0x000007FEFB5D3000-memory.dmp

Filesize
8KB

Download
memory/1176-144-0x0000000000000000-mapping.dmp

Download
memory/1176-145-0x0000000001D80000-0x0000000001ED3000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads