bumblebee | f1717d697da8cab2e5bd34462f692158728f7102734efe53381d0b0715977545

Analysis

max time kernel
82s
max time network
144s
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 10:56

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General

Target

tar.dll
Size

2.7MB
MD5

a3a525339178d35206aff9e6e09ef018
SHA1

1f5f6dda2d4dfdc1a78b177748144dea72f50534
SHA256

ea3bec5905da38bd18241be997b00c8de4ad531255a06326e89d5efc062d3f19
SHA512

693c2f46c3a0ea5dd4fae98afb1a890a440b02d20da4806cabdd07e7aa044a450cf0e0e2a0488d651451f9f011976f04f5bee34d41dd3a9283247116c8030193
SSDEEP

49152:9iU4m3k9LdQ5rrVggzz5UqIdFneQuXnMcjq4lfv9s3c59mf6CKJUQajLWW:pHmLdQtrVggzBITeQunMcW4lfloc59mx

Score

10^/10

bumblebee sp1 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

SP1

45.147.229.23:443

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\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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\tar.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:1612

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/1612-132-0x000002997DDE0000-0x000002997E02B000-memory.dmp

Filesize
2.3MB

Download
memory/1612-133-0x00007FFA852E0000-0x00007FFA852F0000-memory.dmp

Filesize
64KB

Download