bumblebee | 5be0c2df3f2dbca7bfbe77a8eb96abc472bfc6a566aa26cccd8e9937f446dad3

Resubmissions

15-09-2022 12:33

220915-pre97adaf5 10

12-04-2022 16:13

220412-tn3crsgfd6 9

Analysis

max time kernel
90s
max time network
145s
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 12:33

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Report Analysis Logs

General

Target

autorun.dll
Size

2.8MB
MD5

8dbc3035b9bb7ba4e7cac241038d239a
SHA1

dd803a0e41bdaa2c2d6ee86bb0dfa288da788bce
SHA256

5be0c2df3f2dbca7bfbe77a8eb96abc472bfc6a566aa26cccd8e9937f446dad3
SHA512

db800f2af108c627fe165c96b42c9efc2bbdd13c67c28aa6c7dd8df79df9ca7e4e4a8cd8587fabdeba7c97c85d7a243191409191035ccfe5683d0ca161f3bf54
SSDEEP

49152:Uahx4O5E8i+IPSliaD9N0Hq5R+jJaRzj4t8MzSRMpENkyk/priDTnJK:fxy8i9snaq5R+jJaRz

Score

10^/10

bumblebee leg0704 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

LEG0704

45.147.229.177:443

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

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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe
2112	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\autorun.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
- Suspicious behavior: EnumeratesProcesses
PID:2112

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

Replay Monitor

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Downloads

memory/2112-132-0x000001AA3EF20000-0x000001AA3F16B000-memory.dmp

Filesize
2.3MB

Download
memory/2112-133-0x00007FFA20620000-0x00007FFA20630000-memory.dmp

Filesize
64KB

Download