bumblebee | c917a6d3c9f34d074ccd6f031ad1891315bd67e54115f866fc64149a4f5fcd9b

General

Target

c917a6d3c9f34d074ccd6f031ad1891315bd67e54115f866fc64149a4f5fcd9b.dll
Size

2.1MB
MD5

8668e7b3c6f2bb061784d78c7351b335
SHA1

c42226ab0c098d0c86254f9861faea74359d8f1a
SHA256

c917a6d3c9f34d074ccd6f031ad1891315bd67e54115f866fc64149a4f5fcd9b
SHA512

81562a5ec3e7afb0c5efa5020f8b350250dd1fd7a16ce23fe3de3a6622d4cde24b85e726523a499969015f215d372dbbafc59fe53aecca5ea114a3c3a4294186
SSDEEP

49152:9pfaMa7wkHW4GnVibdZAi6WcJQc2CU/Z9dYn0XZW1M:T4KVIZAiTcqcHkdEII1M

Score

10^/10

bumblebee ra1104 defense_evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

RA1104

C2

142.91.3.109:443

23.83.133.216:443

Signatures

BumbleBee
BumbleBee is a loader malware written in C++.
loader bumblebee
Bumblebee family
bumblebee

Enumerates VirtualBox registry keys 2 TTPs 5 IoCs

defense_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

defense_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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	rundll32.exe

Blocklisted process makes network request 5 IoCs

flow	pid	Process
12	5260	rundll32.exe
13	5260	rundll32.exe
34	5260	rundll32.exe
35	5260	rundll32.exe
42	5260	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.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1279544337-3716153908-718418795-1000\SOFTWARE\Wine	rundll32.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	rundll32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe
5260	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c917a6d3c9f34d074ccd6f031ad1891315bd67e54115f866fc64149a4f5fcd9b.dll,#1
1⤵
- Enumerates VirtualBox registry keys
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Looks for VirtualBox Guest Additions in registry
- Blocklisted process makes network request
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Checks for VirtualBox DLLs, possible anti-VM trick
- Suspicious behavior: EnumeratesProcesses
PID:5260

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

4

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

4

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/5260-0-0x00007FFEE2D6D000-0x00007FFEE2D6E000-memory.dmp

Filesize
4KB

Download
memory/5260-1-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-3-0x00007FFEE2CD0000-0x00007FFEE2EC5000-memory.dmp

Filesize
2.0MB

Download
memory/5260-5-0x00007FFEE2CD0000-0x00007FFEE2EC5000-memory.dmp

Filesize
2.0MB

Download
memory/5260-4-0x00007FFEE2CD0000-0x00007FFEE2EC5000-memory.dmp

Filesize
2.0MB

Download
memory/5260-2-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-6-0x00007FFEE2CD0000-0x00007FFEE2EC5000-memory.dmp

Filesize
2.0MB

Download
memory/5260-7-0x00007FFEE2CD0000-0x00007FFEE2EC5000-memory.dmp

Filesize
2.0MB

Download
memory/5260-9-0x00007FFEE2CD0000-0x00007FFEE2EC5000-memory.dmp

Filesize
2.0MB

Download
memory/5260-8-0x00007FFEE2CD0000-0x00007FFEE2EC5000-memory.dmp

Filesize
2.0MB

Download
memory/5260-10-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-11-0x00007FFEE2CD0000-0x00007FFEE2EC5000-memory.dmp

Filesize
2.0MB

Download
memory/5260-12-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-13-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-14-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-15-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-17-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-16-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-18-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download
memory/5260-19-0x000002ADA2A20000-0x000002ADA2C6B000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads