bumblebee | 0d740a348362171814cb314a48d763e336407904a36fa278eaf390c5743ec33b

Target

desk.dll
Size

1.2MB
MD5

b07d064220b48ac3b110e6ebe1e4f542
SHA1

c3bb172894a4e0e1ecc93fcd1bd78450ab4ca195
SHA256

25ccf19af5dac51ec76ce6da1d2958d5dee34e50e78938b187b627f8771317d1
SHA512

d169d11b492e465e31fa98e4b185a2161e1ff739757f7e139f9c63605af3d9a15813a538801d569f75de02de26a243dd40b7d46d074ffda445dd70c1860e1c74

Score

10^/10

bumblebee 1105a evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1105a

142.11.222.79:443

23.254.224.200:443

103.175.16.52:443

199.195.252.30:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan bumblebee
Enumerates VirtualBox registry keys 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\desk.dll,#1
1⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious behavior: EnumeratesProcesses
PID:1924

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/1924-54-0x0000000001DE0000-0x0000000001EA9000-memory.dmp

Filesize
804KB

Download