f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f

Analysis

max time kernel
165s
max time network
172s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
28/11/2022, 06:41

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General

Target

f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe
Size

500KB
MD5

293583bf088c14dadac3bb1a11cd1a0a
SHA1

e1939bafc696285a843182df8cb9454d55ac1e42
SHA256

f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f
SHA512

1638320a495be7b60fe26b24080c44188116909e8ffecc73f620f1fa71655909d5eb0f9fd04fb35898e395ab1874de20880dfa118b7dee267d86fdaec0e726c8
SSDEEP

12288:3aOfzjmhLJfXvYNSK1W1Io18dcFUWVPc29+Bu:3aOfzj21vYzW1Io1ptn+Bu

Score

9^/10

evasion

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe

Executes dropped EXE 1 IoCs

pid	Process
4616	s3661.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	s3661.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	s3661.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	s3661.exe
File created	C:\Windows\assembly\Desktop.ini	s3661.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	s3661.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1456	f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe
1456	f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe
4616	s3661.exe
4616	s3661.exe
4616	s3661.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4616	s3661.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4616	s3661.exe
4616	s3661.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 4616	1456	f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe	81
PID 1456 wrote to memory of 4616	1456	f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe	81

C:\Users\Admin\AppData\Local\Temp\f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe
"C:\Users\Admin\AppData\Local\Temp\f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks computer location settings
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1456
- C:\Users\Admin\AppData\Local\Temp\n3661\s3661.exe
  "C:\Users\Admin\AppData\Local\Temp\n3661\s3661.exe" dd42518862a687265bf07afd3zV2ut4Zd954DI+bw0SIazxLZE27iDF+unDE4KUA7ZnJbvDcQC26Co+7xCVvZ494siSj2WHlxYS1MAteYCF58s6lfox7f9GZts5ebD4UO/oBmLiy34pSwdit9c4kPhHZKKAQwn4RvFuQBfbJ1AEQpDX/WI8vZ8z4V9zQ5bTQICciouKtD++LL1IJU2L4 /v "C:\Users\Admin\AppData\Local\Temp\f386106f1ee8c3f396caf8b612fc59b5d1d0e5ad64110fb496f590a5d985048f.exe"
  2⤵
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4616

Network

MITRE ATT&CK Enterprise v6

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\n3661\s3661.exe

Filesize
225KB

MD5
8d8e499f7e6eca2e0db8cd8e53092393

SHA1
bf92dd793d041dfdfc2bd4f2b6607444b10c4e76

SHA256
ccea408e4f4274927ec734e4b882b00b6073d9d722cc4ddccab8dab38b4c7cfd

SHA512
5dd6dea473ea07e8106c4528d1e6769e5819627e18ab3b40ae5553fad1f5d98f61385b76cdd8c8474b12df6c5a6a4233e11d5ff3fe6a04ca8134197dc659964f

Download Submit
C:\Users\Admin\AppData\Local\Temp\n3661\s3661.exe

Filesize
225KB

MD5
8d8e499f7e6eca2e0db8cd8e53092393

SHA1
bf92dd793d041dfdfc2bd4f2b6607444b10c4e76

SHA256
ccea408e4f4274927ec734e4b882b00b6073d9d722cc4ddccab8dab38b4c7cfd

SHA512
5dd6dea473ea07e8106c4528d1e6769e5819627e18ab3b40ae5553fad1f5d98f61385b76cdd8c8474b12df6c5a6a4233e11d5ff3fe6a04ca8134197dc659964f

Download Submit
memory/4616-138-0x00007FFB3BBF0000-0x00007FFB3C626000-memory.dmp

Filesize
10.2MB

Download
memory/4616-139-0x000000000148A000-0x000000000148F000-memory.dmp

Filesize
20KB

Download
memory/4616-140-0x000000000148A000-0x000000000148F000-memory.dmp

Filesize
20KB

Download
memory/4616-141-0x000000000148A000-0x000000000148F000-memory.dmp

Filesize
20KB

Download