bumblebee | f3077783bce02e545a2f915eab33d79b31dabbc65e7fe84ad96a7d09c72243e0

Analysis

max time kernel
137s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2023 07:17

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General

Target

f3077783bce02e545a2f915eab33d79b31dabbc65e7fe84ad96a7d09c72243e0.dll
Size

1.6MB
MD5

4a09529deba419d71f85353c559063b7
SHA1

6d9118bd78d25265128eeb17459489055d4ea45e
SHA256

f3077783bce02e545a2f915eab33d79b31dabbc65e7fe84ad96a7d09c72243e0
SHA512

74c6ed5f73d51d3cef6678ded90eb744bec50b1e5274f9a36eb1e0732b25fd452189f6edfa728140a6571b1b4cd15a66df87696226c19ccf153d5a721904801f
SSDEEP

24576:U2GyDOoFZaFJbbM3kAXS1LvO4BYT7JIoXUnMgQ67zOLsK2ov9:U2RDFZYNgkAXS1646bXaML6uhv

Score

10^/10

bumblebee 206r evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

206r

145.239.30.26:443

194.37.97.135:443

185.62.58.238:443

176.107.177.124:443

192.236.160.254:443

192.236.192.85:443

185.62.56.201:443

103.175.16.59:443

198.98.57.91:443

154.56.0.221:443

64.44.101.250:443

103.175.16.117:443

63.141.248.253:443

192.236.194.136:443

193.239.84.247:443

192.236.161.191:443

185.156.172.123:443

54.38.136.187:443

64.44.102.6:443

192.119.64.21:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan 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\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 7 IoCs

flow	pid	Process
12	3372	rundll32.exe
23	3372	rundll32.exe
34	3372	rundll32.exe
45	3372	rundll32.exe
47	3372	rundll32.exe
48	3372	rundll32.exe
50	3372	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-1-5-21-144354903-2550862337-1367551827-1000\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
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f3077783bce02e545a2f915eab33d79b31dabbc65e7fe84ad96a7d09c72243e0.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:3372

Network

MITRE ATT&CK Enterprise v6

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/3372-134-0x000002739E860000-0x000002739E977000-memory.dmp

Filesize
1.1MB

Download
memory/3372-135-0x000002739E860000-0x000002739E977000-memory.dmp

Filesize
1.1MB

Download
memory/3372-136-0x00007FFE24620000-0x00007FFE24630000-memory.dmp

Filesize
64KB

Download
memory/3372-137-0x000002739E860000-0x000002739E977000-memory.dmp

Filesize
1.1MB

Download
memory/3372-138-0x000002739E860000-0x000002739E977000-memory.dmp

Filesize
1.1MB

Download
memory/3372-139-0x000002739E860000-0x000002739E977000-memory.dmp

Filesize
1.1MB

Download
memory/3372-140-0x000002739E860000-0x000002739E977000-memory.dmp

Filesize
1.1MB

Download
memory/3372-149-0x000002739E860000-0x000002739E977000-memory.dmp

Filesize
1.1MB

Download
memory/3372-150-0x000002739E860000-0x000002739E977000-memory.dmp

Filesize
1.1MB

Download