bumblebee | 4a49e2f06ba48d3a88fdeb83fb8021f3d165535e8ea5319b16a7ebe4da9c0751

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/04/2024, 10:49

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General

Target

4a49e2f06ba48d3a88fdeb83fb8021f3d165535e8ea5319b16a7ebe4da9c0751.dll
Size

2.7MB
MD5

c9e37a67f7e3dd3826c23ee04a62ec7b
SHA1

aa157fabb858a9e7ae0d138246545f776934cba7
SHA256

4a49e2f06ba48d3a88fdeb83fb8021f3d165535e8ea5319b16a7ebe4da9c0751
SHA512

5a5912c002f7d06a39bd0f9eba82da32cd7e621e814f1060095d5d56d2a0092ee398499a6a75cb28da773f63b1320f66089ed881a59fb36e8b589deb384e92ea
SSDEEP

49152:+jThLI9aW/+9xRAfRJiN9KtmkP8vfuGia3F2JgN8kupvjgi3M8pp/:+XdO+9x4JiN9umkP8vfuGia3F2JgN8kG

Score

10^/10

bumblebee all0604 evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

ALL0604

192.236.198.63:443

Signatures

BumbleBee
BumbleBee is a loader malware written in C++.
loader 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\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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\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 10 IoCs

pid	Process
1092	rundll32.exe
1092	rundll32.exe
1092	rundll32.exe
1092	rundll32.exe
1092	rundll32.exe
1092	rundll32.exe
1092	rundll32.exe
1092	rundll32.exe
1092	rundll32.exe
1092	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a49e2f06ba48d3a88fdeb83fb8021f3d165535e8ea5319b16a7ebe4da9c0751.dll,#1
1⤵
- 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
- Checks for VirtualBox DLLs, possible anti-VM trick
- Suspicious behavior: EnumeratesProcesses
PID:1092

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/1092-1-0x0000000001ED0000-0x000000000211B000-memory.dmp

Filesize
2.3MB

Download
memory/1092-0-0x0000000001ED0000-0x000000000211B000-memory.dmp

Filesize
2.3MB

Download
memory/1092-3-0x00000000777D0000-0x0000000077979000-memory.dmp

Filesize
1.7MB

Download
memory/1092-2-0x00000000777D0000-0x0000000077979000-memory.dmp

Filesize
1.7MB

Download
memory/1092-4-0x00000000777D0000-0x0000000077979000-memory.dmp

Filesize
1.7MB

Download
memory/1092-5-0x00000000777D0000-0x0000000077979000-memory.dmp

Filesize
1.7MB

Download
memory/1092-6-0x000000007FFF0000-0x000000007FFF1000-memory.dmp

Filesize
4KB

Download
memory/1092-7-0x00000000777D0000-0x0000000077979000-memory.dmp

Filesize
1.7MB

Download