bumblebee | 086b85d86b1f8d8ce1140c1df1e9e0168c86d39caf4b9c83a68169248d1bdaf2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 19:41

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General

Target

documents.lnk
Size

1KB
MD5

4f300f88560cda15d8b3987d6cb2c16b
SHA1

3696719d0d36303679453c0b37efabaaea52d1d9
SHA256

f0f027a7a2ec074b492dd2bbdfb35bc9283bc123a6b5d98c7628340eeb6b26d6
SHA512

037da28a415916d9a3a6f995a17abd87d4f731a3cc6f775d657582824be7be4590576a00738c16833579390b0be883264a8b1ab6e34151bde39c7fb493f36ac2

Score

10^/10

bumblebee 0905r evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

0905r

23.227.203.120:443

51.83.253.244:443

23.227.198.195:443

146.70.106.92:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a loader malware written in C++.
loader bumblebee
Bumblebee family
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

Blocklisted process makes network request 4 IoCs

flow	pid	Process
15	392	rundll32.exe
19	392	rundll32.exe
20	392	rundll32.exe
38	392	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\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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	cmd.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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Wine	rundll32.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe
392	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4120 wrote to memory of 392	4120	cmd.exe	83
PID 4120 wrote to memory of 392	4120	cmd.exe	83

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\documents.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" oblot.dll,SjVjlixjPb
  2⤵
  - Enumerates VirtualBox registry keys
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Looks for VirtualBox Guest Additions in registry
  - Blocklisted process makes network request
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Checks for VirtualBox DLLs, possible anti-VM trick
  - Suspicious behavior: EnumeratesProcesses
  PID:392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/392-0-0x00007FFD0B3ED000-0x00007FFD0B3EE000-memory.dmp

Filesize
4KB

Download
memory/392-1-0x0000021765C30000-0x0000021765CF9000-memory.dmp

Filesize
804KB

Download
memory/392-2-0x0000021765C30000-0x0000021765CF9000-memory.dmp

Filesize
804KB

Download
memory/392-3-0x00007FFD0B350000-0x00007FFD0B545000-memory.dmp

Filesize
2.0MB

Download
memory/392-5-0x00007FFD0B350000-0x00007FFD0B545000-memory.dmp

Filesize
2.0MB

Download
memory/392-4-0x00007FFD0B350000-0x00007FFD0B545000-memory.dmp

Filesize
2.0MB

Download
memory/392-6-0x0000021765C30000-0x0000021765CF9000-memory.dmp

Filesize
804KB

Download
memory/392-7-0x0000021765C30000-0x0000021765CF9000-memory.dmp

Filesize
804KB

Download
memory/392-8-0x00007FFD0B3ED000-0x00007FFD0B3EE000-memory.dmp

Filesize
4KB

Download
memory/392-9-0x00007FFD0B350000-0x00007FFD0B545000-memory.dmp

Filesize
2.0MB

Download
memory/392-11-0x0000021765C30000-0x0000021765CF9000-memory.dmp

Filesize
804KB

Download
memory/392-10-0x0000021765C30000-0x0000021765CF9000-memory.dmp

Filesize
804KB

Download