bumblebee | 4a49e2f06ba48d3a88fdeb83fb8021f3d165535e8ea5319b16a7ebe4da9c0751

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

C2

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\FADT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\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 6 IoCs

flow	pid	Process
13	1708	rundll32.exe
37	1708	rundll32.exe
40	1708	rundll32.exe
52	1708	rundll32.exe
53	1708	rundll32.exe
58	1708	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-1-5-21-609813121-2907144057-1731107329-1000\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 20 IoCs

pid	Process
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	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
- 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:1708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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/1708-0-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

Filesize
2.0MB

Download
memory/1708-1-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-3-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

Filesize
2.0MB

Download
memory/1708-2-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-4-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

Filesize
2.0MB

Download
memory/1708-5-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

Filesize
2.0MB

Download
memory/1708-6-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

Filesize
2.0MB

Download
memory/1708-7-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

Filesize
2.0MB

Download
memory/1708-8-0x00007FFBF7840000-0x00007FFBF7850000-memory.dmp

Filesize
64KB

Download
memory/1708-9-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-10-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-11-0x00007FFBF7850000-0x00007FFBF7A45000-memory.dmp

Filesize
2.0MB

Download
memory/1708-12-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-13-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-14-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-15-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-16-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-17-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-18-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-19-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-20-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download
memory/1708-21-0x0000021ADC8C0000-0x0000021ADCB0B000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads