bumblebee | 581d2841fe9a17155f33fff07a4edd99d126c835ec2a702a74b57209296fea9d

Analysis

max time kernel
90s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2022 10:33

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General

Target

setting.dll
Size

2.4MB
MD5

810beaab7e74d7b37dfd3b8b319a2ca6
SHA1

fb07e024c28064ab5e6accf248e74bc12c31cf06
SHA256

131f7e18bc3ea50cdcf74b618c24f5ae1b38594f8649d80538566b1cceeec683
SHA512

e41e4588d9cb9d9e1adc72a862f2816070f9cc204833cdd7527260ea1f710077076ec67c9eca786e99c49e8e14c28619ab96bb0ce1324e2fb4d9110bc6419c2b
SSDEEP

49152:d7wq/1JsO/mzk/B84wEkqcKKEit/nLYpieYHpzoHM41/:d7w27ekpWRIe4YHpzos4V

Score

10^/10

bumblebee all0504 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

ALL0504

192.236.198.63:443

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\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

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe
4720	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\setting.dll,#1
1⤵
- Enumerates VirtualBox registry keys
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious behavior: EnumeratesProcesses
PID:4720

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/4720-132-0x0000022690140000-0x000002269038D000-memory.dmp

Filesize
2.3MB

Download
memory/4720-133-0x00007FFBE72C0000-0x00007FFBE72D0000-memory.dmp

Filesize
64KB

Download