bumblebee | 538d9548d4b197611a07d436feb27beff04e6cd53fba88b1cfdee626eff89db2

General

Target
taxep.dll
Size 1.6MB
Sample220603-mpdbpsaceq
SHA256 538d9548d4b197611a07d436feb27beff04e6cd53fba88b1cfdee626eff89db2
MD5 96311317eb4a91f0919637a0ff9d8798
SHA1 6ab7f83e5823b0610d9febc184e55ade564bd9ce
SHA512 71108c7417dcdde59ed89d8cc39d9f4ebc73d9ecc30c81b154ad6b516d1cf5ab8e754a03e0fc56f78577879f6bcfc159e977c030a0584f0bcaf6bf5a1ee5814b
MD5 SHA1 SHA512

Score

10^/10

bumblebee 206r evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

206r

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
79.110.52.56:443
103.175.16.107:443
146.19.173.224:443
68.233.238.105:443
64.44.135.250:443
103.175.16.121:443
192.236.249.68:443
193.239.84.254:443
37.120.198.248:443
146.19.173.139:443

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

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\taxep.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:1964

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

4

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

1

T1082

Virtualization/Sandbox Evasion

4

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1964-54-0x00000000024E0000-0x00000000025F7000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads