bumblebee | d81cfd03427f725fa3b091cb85d021930f85676633466bfa5b45feecc9b281ae

General

Target

sample/palerma3.dll
Size

1.2MB
MD5

87f8ceeaa38c6877b7b44cc6128a6d85
SHA1

c31ed647f179c2e2ed72bfd4beee3cab528f0791
SHA256

048d68e4e4c8b9f8ed590b6722793b96fa77bbf9b1528f091bea8c4e89800186
SHA512

d8444634e2866e81127f0098fe47bd2eaebfb1bdfb1faf71389ee37ccc5f7c9a03ae1a970f37fd922dc54d1cda786d08a6a633d2262e4d97385d62875209ea91

Score

10^/10

bumblebee 6rr evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

6rr

C2

145.239.30.26:443

194.37.97.135:443

185.62.58.238:443

176.107.177.124:443

192.236.160.254:443

192.236.192.85:443

185.62.56.201:443

103.175.16.59:443

198.98.57.91:443

154.56.0.221:443

64.44.101.250:443

103.175.16.117:443

63.141.248.253:443

192.236.194.136:443

193.239.84.247:443

192.236.161.191:443

185.156.172.123:443

54.38.136.187:443

64.44.102.6:443

192.119.64.21:443

rc4.plain

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-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe
1968	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\sample\palerma3.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:1968