bumblebee | c917a6d3c9f34d074ccd6f031ad1891315bd67e54115f866fc64149a4f5fcd9b

Analysis

max time kernel
13s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
14/03/2025, 10:17

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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

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\VBoxSF	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	rundll32.exe
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

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

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-1-5-21-3692679935-4019334568-335155002-1000\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 10 IoCs

pid	Process
796	rundll32.exe
796	rundll32.exe
796	rundll32.exe
796	rundll32.exe
796	rundll32.exe
796	rundll32.exe
796	rundll32.exe
796	rundll32.exe
796	rundll32.exe
796	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
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Checks for VirtualBox DLLs, possible anti-VM trick
- Suspicious behavior: EnumeratesProcesses
PID:796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/796-3-0x00000000775C0000-0x0000000077769000-memory.dmp

Filesize
1.7MB

Download
memory/796-4-0x00000000775C0000-0x0000000077769000-memory.dmp

Filesize
1.7MB

Download
memory/796-2-0x0000000001ED0000-0x000000000211B000-memory.dmp

Filesize
2.3MB

Download
memory/796-5-0x00000000775C0000-0x0000000077769000-memory.dmp

Filesize
1.7MB

Download
memory/796-1-0x0000000001ED0000-0x000000000211B000-memory.dmp

Filesize
2.3MB

Download
memory/796-0-0x0000000077611000-0x0000000077612000-memory.dmp

Filesize
4KB

Download
memory/796-6-0x00000000775C0000-0x0000000077769000-memory.dmp

Filesize
1.7MB

Download
memory/796-7-0x00000000775C0000-0x0000000077769000-memory.dmp

Filesize
1.7MB

Download