3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b

General

Target

3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe
Size

184KB
MD5

74dc37b7aabf745eac1d5fc65428488e
SHA1

fa406e4e4fe581091e30bac24ad0a1023bc5eed3
SHA256

3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b
SHA512

660d9ed08afa90dc782d3814ab8428137d5748c63433b3fb3ddc76da9412a279d1da2fd87e1a11dbedd486edbdabd5db871d4912704e49b9ccb3ac3c39e4ac21

Score

9^/10

evasion persistence

Malware Config

Signatures

Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exebfsvc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	bfsvc.exe

Executes dropped EXE 1 IoCs

Processes:

bfsvc.exe

pid process

4416 bfsvc.exe

pid	process
4416	bfsvc.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

bfsvc.exe3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	bfsvc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	bfsvc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\bfsvc.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Y1FeZFVYXllb\\bfsvc.exe"	3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exebfsvc.exe

description	pid	process
Token: SeDebugPrivilege	4696	3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe
Token: SeDebugPrivilege	4416	bfsvc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe

description	pid	process	target process
PID 4696 wrote to memory of 4416	4696	3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe	bfsvc.exe
PID 4696 wrote to memory of 4416	4696	3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe	bfsvc.exe
PID 4696 wrote to memory of 4416	4696	3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe	bfsvc.exe

C:\Users\Admin\AppData\Local\Temp\3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe
"C:\Users\Admin\AppData\Local\Temp\3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4696
- C:\Users\Admin\AppData\Roaming\Y1FeZFVYXllb\bfsvc.exe
  C:\Users\Admin\AppData\Roaming\Y1FeZFVYXllb\bfsvc.exe C:\Users\Admin\AppData\Local\Temp\3D4BCA~1.EXE
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Executes dropped EXE
  - Checks BIOS information in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:4416

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Y1FeZFVYXllb\bfsvc.exe

Filesize
184KB

MD5
74dc37b7aabf745eac1d5fc65428488e

SHA1
fa406e4e4fe581091e30bac24ad0a1023bc5eed3

SHA256
3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b

SHA512
660d9ed08afa90dc782d3814ab8428137d5748c63433b3fb3ddc76da9412a279d1da2fd87e1a11dbedd486edbdabd5db871d4912704e49b9ccb3ac3c39e4ac21

Download Submit
C:\Users\Admin\AppData\Roaming\Y1FeZFVYXllb\bfsvc.exe

Filesize
184KB

MD5
74dc37b7aabf745eac1d5fc65428488e

SHA1
fa406e4e4fe581091e30bac24ad0a1023bc5eed3

SHA256
3d4bca06160a1916b52e9bbdc376faa138efb026f838583f62a4851675cb5d6b

SHA512
660d9ed08afa90dc782d3814ab8428137d5748c63433b3fb3ddc76da9412a279d1da2fd87e1a11dbedd486edbdabd5db871d4912704e49b9ccb3ac3c39e4ac21

Download Submit
memory/4416-133-0x0000000000000000-mapping.dmp

Download
memory/4416-136-0x0000000002640000-0x0000000002670000-memory.dmp

Filesize
192KB

Download
memory/4416-137-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/4416-139-0x0000000002640000-0x0000000002670000-memory.dmp

Filesize
192KB

Download
memory/4696-130-0x00000000026A0000-0x00000000026D0000-memory.dmp

Filesize
192KB

Download
memory/4696-131-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads