bumblebee | 854b4397960a159cc403fc5c774b6212d5ad01fefd88cea653762b9669b06d83

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
22-12-2024 11:27

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General

Target

run.bat
Size

58B
MD5

3584bb940c89b0df35c1fb9842b8cad9
SHA1

7726cc4e77d963cde5817f5df7538097ed0ab594
SHA256

a401c25778891fde443279c89813ccd714bee0b4c2ce283a19af3d11d73aeb3b
SHA512

97c6426afb10124c6f1812e157017171879d9806d73552d98e248f6376a5af3e17cce9aefe720f89fd4fdf44078ca6755921c4c1c2448b6ac6e2131c519f0597

Score

10^/10

bumblebee 276a evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

276a

146.70.106.52:443

65.72.191.77:443

103.175.16.116:443

185.62.58.175:443

209.141.58.141:443

154.56.0.112:443

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\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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	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\RSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\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 7 IoCs

flow	pid	Process
14	2136	rundll32.exe
23	2136	rundll32.exe
37	2136	rundll32.exe
41	2136	rundll32.exe
42	2136	rundll32.exe
48	2136	rundll32.exe
49	2136	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\SystemBiosDate	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	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-1-5-21-3227495264-2217614367-4027411560-1000\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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3092 wrote to memory of 2136	3092	cmd.exe	83
PID 3092 wrote to memory of 2136	3092	cmd.exe	83

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\run.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bb.dll,DllRegisterServer
  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:2136

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

Replay Monitor

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Downloads

memory/2136-0-0x00007FFEE438D000-0x00007FFEE438E000-memory.dmp

Filesize
4KB

Download
memory/2136-1-0x0000020B91440000-0x0000020B91556000-memory.dmp

Filesize
1.1MB

Download
memory/2136-3-0x00007FFEE42F0000-0x00007FFEE44E5000-memory.dmp

Filesize
2.0MB

Download
memory/2136-2-0x0000020B91440000-0x0000020B91556000-memory.dmp

Filesize
1.1MB

Download
memory/2136-4-0x00007FFEE42F0000-0x00007FFEE44E5000-memory.dmp

Filesize
2.0MB

Download
memory/2136-5-0x00007FFEE42F0000-0x00007FFEE44E5000-memory.dmp

Filesize
2.0MB

Download
memory/2136-6-0x0000020B91440000-0x0000020B91556000-memory.dmp

Filesize
1.1MB

Download
memory/2136-7-0x0000020B91440000-0x0000020B91556000-memory.dmp

Filesize
1.1MB

Download
memory/2136-8-0x00007FFEE438D000-0x00007FFEE438E000-memory.dmp

Filesize
4KB

Download
memory/2136-9-0x00007FFEE42F0000-0x00007FFEE44E5000-memory.dmp

Filesize
2.0MB

Download
memory/2136-10-0x0000020B91440000-0x0000020B91556000-memory.dmp

Filesize
1.1MB

Download
memory/2136-11-0x0000020B91440000-0x0000020B91556000-memory.dmp

Filesize
1.1MB

Download