bumblebee | 6e9caeb0638c049f8c87ca866f98e1bc1d174d4c7dc09b3866e9d0cd8a568a64

Analysis

max time kernel
122s
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 03:13

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General

Target

stats.dll
Size

1.4MB
MD5

657682f71a10eafd869cf2d2bf793dff
SHA1

db85130c620529b809a1993418a273548cf9d449
SHA256

30bf36f75df541899e3954ca3a9efa96ae4a7d4fd268a8efb81605146ee7eaa2
SHA512

7cb1797e8ed51ccb54dd0c6e5d7b95c2aa62f5a3ad17762ffa1a8377731dcb2f75b8c4607fca587d18b8499e85e87a03fec8b2f18ea46b3a4cd45abe450100e3
SSDEEP

24576:huMrbr80bs3VdeOZNYu1Y6jFguq4Fn7GoMXt0cjWo9jaibETl:huMr3+VhNYu5j2xsnRqBC

Score

10^/10

bumblebee 276l evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

276l

172.93.193.124:443

45.153.241.64:443

45.153.241.19:443

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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	regsvr32.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__	regsvr32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__	regsvr32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	regsvr32.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	regsvr32.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	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	regsvr32.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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Wine	regsvr32.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	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe
4008	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\stats.dll
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:4008

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/4008-0-0x00007FF9A808D000-0x00007FF9A808E000-memory.dmp

Filesize
4KB

Download
memory/4008-3-0x0000000002F00000-0x0000000003016000-memory.dmp

Filesize
1.1MB

Download
memory/4008-4-0x0000000002F00000-0x0000000003016000-memory.dmp

Filesize
1.1MB

Download
memory/4008-7-0x00007FF9A7FF0000-0x00007FF9A81E5000-memory.dmp

Filesize
2.0MB

Download
memory/4008-8-0x00007FF9A7FF0000-0x00007FF9A81E5000-memory.dmp

Filesize
2.0MB

Download
memory/4008-6-0x00007FF9A7FF0000-0x00007FF9A81E5000-memory.dmp

Filesize
2.0MB

Download
memory/4008-9-0x0000000002F00000-0x0000000003016000-memory.dmp

Filesize
1.1MB

Download
memory/4008-5-0x00007FF9A7FF0000-0x00007FF9A81E5000-memory.dmp

Filesize
2.0MB

Download
memory/4008-2-0x0000000002F00000-0x0000000003016000-memory.dmp

Filesize
1.1MB

Download
memory/4008-10-0x0000000002F00000-0x0000000003016000-memory.dmp

Filesize
1.1MB

Download
memory/4008-1-0x0000000002F00000-0x0000000003016000-memory.dmp

Filesize
1.1MB

Download
memory/4008-11-0x00007FF9A808D000-0x00007FF9A808E000-memory.dmp

Filesize
4KB

Download
memory/4008-12-0x00007FF9A7FF0000-0x00007FF9A81E5000-memory.dmp

Filesize
2.0MB

Download
memory/4008-13-0x0000000002F00000-0x0000000003016000-memory.dmp

Filesize
1.1MB

Download
memory/4008-14-0x0000000002F00000-0x0000000003016000-memory.dmp

Filesize
1.1MB

Download