bumblebee | 854b4397960a159cc403fc5c774b6212d5ad01fefd88cea653762b9669b06d83

General

Target

bb.dll
Size

2.0MB
MD5

5dc6a6789108ac4e667ce24142da1d35
SHA1

660db375094ffef61406b9867528a96861b323e0
SHA256

487dfd12574da32277b18f9ccf3f4143bf676e3560cec909d44db957b1b37670
SHA512

b50af80effc8724690c63ce97798792129994e6fba95d7528ebb43aeaa4996938e4cf781135b0340c6b970f36eb3e53c186abf442494bf5b02478a39fe3125a7
SSDEEP

49152:7WUC0sDBCKCyRf0C3yXGrlz7WHdUcZOiND:7W0sDBCKCyRf0C3y+cZv

Score

10^/10

bumblebee 276a evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

276a

C2

146.70.106.52:443

65.72.191.77:443

103.175.16.116:443

185.62.58.175:443

209.141.58.141:443

154.56.0.112:443

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\VBoxVideo	regsvr32.exe
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

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\SystemBiosDate	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	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-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Wine	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
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe
1736	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\bb.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
- Checks for VirtualBox DLLs, possible anti-VM trick
- Suspicious behavior: EnumeratesProcesses
PID:1736

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/1736-0-0x0000000077C31000-0x0000000077C32000-memory.dmp

Filesize
4KB

Download
memory/1736-1-0x0000000002450000-0x0000000002566000-memory.dmp

Filesize
1.1MB

Download
memory/1736-3-0x0000000002450000-0x0000000002566000-memory.dmp

Filesize
1.1MB

Download
memory/1736-4-0x0000000002450000-0x0000000002566000-memory.dmp

Filesize
1.1MB

Download
memory/1736-7-0x0000000077BE0000-0x0000000077D89000-memory.dmp

Filesize
1.7MB

Download
memory/1736-6-0x0000000077BE0000-0x0000000077D89000-memory.dmp

Filesize
1.7MB

Download
memory/1736-5-0x0000000077BE0000-0x0000000077D89000-memory.dmp

Filesize
1.7MB

Download
memory/1736-8-0x0000000002450000-0x0000000002566000-memory.dmp

Filesize
1.1MB

Download
memory/1736-9-0x0000000077BE0000-0x0000000077D89000-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