1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2

Analysis

max time kernel
110s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20/11/2024, 17:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Size

62KB
MD5

fb7f1c3c694ea35946a1fe0415f882de
SHA1

c51196f374e9f21a7086f24929ab20a257432873
SHA256

1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2
SHA512

7e7ecea62af28573761848d2742aa9cff02e4dcfa74b3b918545ebd42add3b051e7afb4ef66e1fc900e8c917d18e1771175cbf80495334f3d26497556f707385
SSDEEP

1536:8g/9T8ROcQupqqusN3mrS/ztMhkywRFUnTmc5n4IIIIIIIIIIIIIIIIIIDIIIIIC:8g585LpPCrQt7F84IIIIIIIIIIIIIIIU

Score

10^/10

aspackv2 discovery evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 3 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSsy.exe"	SMSSsy.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSsy.exe"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSsy.exe"	SMSSsy.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	SMSSsy.exe

Disables RegEdit via registry modification 2 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	SMSSsy.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000c000000023ba0-4.dat	aspack_v212_v242

Executes dropped EXE 2 IoCs

pid	Process
4296	SMSSsy.exe
3620	SMSSsy.exe

Modifies system executable filetype association 2 TTPs 8 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Service Host = "C:\\Windows\\SMSSsy.exe"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe

Drops file in Windows directory 38 IoCs

description	ioc	Process
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\iMesh 4.2 Ad Remover Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee VirusScan Home Edition 2004 Crack.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton SystemWorks 2004 Crack.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Nero Burning ROM v6.0.0.19 Ultra Edition Crack.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\BearShare Pro 4.3.0 Crack.exe	SMSSsy.exe
File created	C:\Windows\SMSSsy.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Sophos AntiVirus v3.74 Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Sophos AntiVirus v3.74 Crack.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Microsoft Office System Professional V2003 Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton SystemWorks 2004 Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton Antispam 2004 Crack.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Borland C++ BuilderX 1.0 Enterprise Edition Crack.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton Antispam 2004 Keygen.exe	SMSSsy.exe
File created	C:\Windows\SMSSsy.exe	SMSSsy.exe
File opened for modification	C:\Windows\svchost.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton Antispam 2004 Keygen.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Macromedia Contribute 2 Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Microsoft Office System Professional V2003 Crack.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee VirusScan Home Edition 2004 Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Nero Burning ROM v6.0.0.19 Ultra Edition Crack.exe	SMSSsy.exe
File created	C:\Windows\SMSSsy.exe	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\iMesh 4.2 Ad Remover Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Borland C++ BuilderX 1.0 Enterprise Edition Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton SystemWorks 2004 Keygen.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Macromedia Contribute 2 Crack.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee SpamKiller 2004 Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee SpamKiller 2004 Crack.exe	SMSSsy.exe
File opened for modification	C:\Windows\SMSSsy.exe	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
File opened for modification	C:\Windows\svchost.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton Antispam 2004 Crack.exe	SMSSsy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton SystemWorks 2004 Keygen.exe	SMSSsy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\BearShare Pro 4.3.0 Crack.exe	SMSSsy.exe
File created	C:\Windows\svchost.exe	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
File created	C:\Windows\message.dat	SMSSsy.exe
File created	C:\Windows\message.htm	SMSSsy.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SMSSsy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SMSSsy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe

Modifies data under HKEY_USERS 13 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached	SMSSsy.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{40DD6E20-7C17-11CE-A804-00AA003CA9F6} {000214FC-0000-0000-C000-000000000046} 0xFFFF = 01000000000000005b28c530743bdb01	SMSSsy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer	SMSSsy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced	SMSSsy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	SMSSsy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	SMSSsy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	SMSSsy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies	SMSSsy.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	SMSSsy.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\TelemetrySalt = "7"	SMSSsy.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	SMSSsy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System	SMSSsy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	SMSSsy.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cmdfile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" /S"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cmdfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\Shell\open\command	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3620	SMSSsy.exe
3620	SMSSsy.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 632 wrote to memory of 4296	632	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe	83
PID 632 wrote to memory of 4296	632	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe	83
PID 632 wrote to memory of 4296	632	1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe	83

C:\Users\Admin\AppData\Local\Temp\1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe
"C:\Users\Admin\AppData\Local\Temp\1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Disables RegEdit via registry modification
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:632
- C:\Windows\SMSSsy.exe
  "C:\Windows\SMSSsy.exe" -xInstallOurNiceServicesYes
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:4296

C:\Windows\SMSSsy.exe
C:\Windows\SMSSsy.exe -xStartOurNiceServicesYes
1⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
PID:3620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SMSSsy.exe

Filesize
62KB

MD5
fb7f1c3c694ea35946a1fe0415f882de

SHA1
c51196f374e9f21a7086f24929ab20a257432873

SHA256
1ef6cd42023e9b6fca4168019bd49b8b3544a28541c041cd2c22e073ec1f9ab2

SHA512
7e7ecea62af28573761848d2742aa9cff02e4dcfa74b3b918545ebd42add3b051e7afb4ef66e1fc900e8c917d18e1771175cbf80495334f3d26497556f707385

Download Submit
memory/632-58-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-82-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-86-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-45-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-47-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-49-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-51-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-43-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-53-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-56-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/632-84-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/3620-52-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/3620-83-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/3620-44-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/4296-7-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download