bumblebee | 422c03f96a72fdd657c2ebca1387bd1f6be6e0b1b30a352827c48ef6fc16995e

General

Target

setting.dll
Size

2.4MB
MD5

156dd2407831b04e65295450c80b5842
SHA1

a0a17e9152ebe725c7de51df2c6626d5dabe7b45
SHA256

f0b628319ecaf47e44a59b53c465e3461c92a08b352188b386b3e43fb47750f6
SHA512

98bc3ecc0cb36386499ca002167bfb05858e82355b1137e5eeb3e8b087ac5ea25853546534c0ffbba6df82a755ba1f494a77416826fa186c6b27cfec2da7b8ec

Score

10^/10

bumblebee all0504 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

ALL0504

C2

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-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	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:4664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

5

T1497

Credential Access

Discovery

Query Registry

6

T1012

System Information Discovery

1

T1082

Virtualization/Sandbox Evasion

5

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4664-130-0x000001CF3A2F0000-0x000001CF3A53D000-memory.dmp

Filesize
2.3MB

Download
memory/4664-131-0x00007FFAC92C0000-0x00007FFAC92D0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads