bumblebee | ff86d5a81bb890b0776095ea7b602bcbae1c61063c4a1c3c891008889649c973

General

Target

7aa5af5ee7a10b31309807e9f72ef711cbf2864c17d943ded85ca439b6106ea4.dll
Size

1.4MB
MD5

bfae0c9a0e0f0dd88051aaa8eb2faedf
SHA1

40fde1f9090fce8ef1c27865ff44d33e47fa9c74
SHA256

7aa5af5ee7a10b31309807e9f72ef711cbf2864c17d943ded85ca439b6106ea4
SHA512

df846c0ab7cffc8d65edff807c095b785220b1cfd6244940744222c0b5cf05c4be6248cc172165fbe7c00f0b72dbf6be587fb762fdd9779ba022f0639a62f5dc
SSDEEP

24576:yF8n2LaxtDT0rYOA+nB64XaTL7AXC6r/rHZwNkirBTCGCo:yF8vT2YD+s4XaTL7U/H2NrRfCo

Score

10^/10

bumblebee 306f evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

306f

C2

209.141.46.50:443

146.19.173.155:443

27.183.95.15:443

54.38.138.94:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a loader malware written in C++.
loader bumblebee
Bumblebee family
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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	regsvr32.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__	regsvr32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__	regsvr32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	regsvr32.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	regsvr32.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	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	regsvr32.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-1-5-21-1846800975-3917212583-2893086201-1000\SOFTWARE\Wine	regsvr32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2632	regsvr32.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	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe
2632	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\7aa5af5ee7a10b31309807e9f72ef711cbf2864c17d943ded85ca439b6106ea4.dll
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 use of NtCreateThreadExHideFromDebugger
- Checks for VirtualBox DLLs, possible anti-VM trick
- Suspicious behavior: EnumeratesProcesses
PID:2632

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

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Downloads

memory/2632-4-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download
memory/2632-3-0x0000000002510000-0x0000000002626000-memory.dmp

Filesize
1.1MB

Download
memory/2632-5-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download
memory/2632-1-0x0000000002510000-0x0000000002626000-memory.dmp

Filesize
1.1MB

Download
memory/2632-0-0x0000000077641000-0x0000000077642000-memory.dmp

Filesize
4KB

Download
memory/2632-6-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download
memory/2632-7-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download
memory/2632-10-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download
memory/2632-9-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download
memory/2632-8-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download
memory/2632-11-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads