ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa

Analysis

max time kernel
138s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
18/10/2022, 21:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Size

146KB
MD5

492f0bf8133e4793fc1e4df33ee1f8c3
SHA1

37429c2bb1c5040469a5e89f76bd11bb26194586
SHA256

ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa
SHA512

6219ddb5e628f2d68cacd2c266527110615b5e330b7cea149cdafda7a9a04302a618b6fb50a2d8517005564c47fd333b27a3ce394c1accca20e4daf18f332796
SSDEEP

3072:3LVoDvPd+A4WhkhXDl+i1lApwH08TdTIIIIIIIIIIIIIIIIIIfIIIIyIIIITIIID:ZopGGgbiwU8J3

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 3 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSiy.exe"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSiy.exe"	SMSSiy.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSiy.exe"	SMSSiy.exe

Modifies system executable filetype association 2 TTPs 8 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe

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

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	SMSSiy.exe

Disables RegEdit via registry modification 2 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	SMSSiy.exe

Executes dropped EXE 2 IoCs

pid	Process
3812	SMSSiy.exe
3700	SMSSiy.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Service Host = "C:\\Windows\\SMSSiy.exe"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe

Drops file in Windows directory 46 IoCs

description	ioc	Process
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	SMSSiy.exe
File created	C:\Windows\SMSSiy.exe	SMSSiy.exe
File opened for modification	C:\Windows\svchost.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Borland C++ BuilderX 1.0 Enterprise Edition Crack.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton AntiVirus 2004 Crack.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NHL 2004 Crack.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Half Life 2 Keygen.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee VirusScan Home Edition 2004 Crack.exe	SMSSiy.exe
File created	C:\Windows\SMSSiy.exe	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	SMSSiy.exe
File created	C:\Windows\message.htm	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\BearShare Pro 4.3.0 Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Half Life 2 beta patch2 Keygen.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Nero Burning ROM v6.0.0.19 Ultra Edition Keygen.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NetObjects Fusion v7.5 Keygen.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NetObjects Fusion v7.5 Keygen.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Dragon NaturallySpeaking 8 ISO Multilanguage Crack.exe	SMSSiy.exe
File created	C:\Windows\message.dat	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Borland C++ BuilderX 1.0 Enterprise Edition Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Half Life 2 Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee SpamKiller 2004 Keygen.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Half Life 2 beta patch2 Keygen.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Half Life 2 Keygen.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Halo Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Macromedia Studio MX 2004 AllApps Crack.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee SpamKiller 2004 Keygen.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee Personal Firewall Plus 2004 Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Nero Burning ROM v6.0.0.19 Ultra Edition Keygen.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee VirusScan Home Edition 2004 Crack.exe	SMSSiy.exe
File created	C:\Windows\svchost.exe	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee Personal Firewall Plus 2004 Crack.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NetObjects Fusion v7.5 Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\iMesh 4.2 Ad Remover Keygen.exe	SMSSiy.exe
File created	C:\Windows\SMSSiy.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton AntiVirus 2004 Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\SMSSiy.exe	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Half Life 2 Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\BearShare Pro 4.3.0 Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NetObjects Fusion v7.5 Crack.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\iMesh 4.2 Ad Remover Keygen.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Halo Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\svchost.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Macromedia Studio MX 2004 AllApps Crack.exe	SMSSiy.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NHL 2004 Crack.exe	SMSSiy.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Dragon NaturallySpeaking 8 ISO Multilanguage Crack.exe	SMSSiy.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 13 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	SMSSiy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System	SMSSiy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	SMSSiy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	SMSSiy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	SMSSiy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies	SMSSiy.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\TelemetrySalt = "3"	SMSSiy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced	SMSSiy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	SMSSiy.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	SMSSiy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached	SMSSiy.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 = 01000000000000007396159049e3d801	SMSSiy.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer	SMSSiy.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cmdfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cmdfile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\Shell\open\command	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" /S"	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3700	SMSSiy.exe
3700	SMSSiy.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 3812	2536	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe	81
PID 2536 wrote to memory of 3812	2536	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe	81
PID 2536 wrote to memory of 3812	2536	ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe	81

C:\Users\Admin\AppData\Local\Temp\ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe
"C:\Users\Admin\AppData\Local\Temp\ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Modifies visiblity of hidden/system files in Explorer
- Disables RegEdit via registry modification
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SMSSiy.exe
  "C:\Windows\SMSSiy.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
  PID:3812

C:\Windows\SMSSiy.exe
C:\Windows\SMSSiy.exe -xStartOurNiceServicesYes
1⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
PID:3700

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

T1042

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SMSSiy.exe

Filesize
146KB

MD5
492f0bf8133e4793fc1e4df33ee1f8c3

SHA1
37429c2bb1c5040469a5e89f76bd11bb26194586

SHA256
ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa

SHA512
6219ddb5e628f2d68cacd2c266527110615b5e330b7cea149cdafda7a9a04302a618b6fb50a2d8517005564c47fd333b27a3ce394c1accca20e4daf18f332796

Download Submit
C:\Windows\SMSSiy.exe

Filesize
146KB

MD5
492f0bf8133e4793fc1e4df33ee1f8c3

SHA1
37429c2bb1c5040469a5e89f76bd11bb26194586

SHA256
ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa

SHA512
6219ddb5e628f2d68cacd2c266527110615b5e330b7cea149cdafda7a9a04302a618b6fb50a2d8517005564c47fd333b27a3ce394c1accca20e4daf18f332796

Download Submit
C:\Windows\SMSSiy.exe

Filesize
146KB

MD5
492f0bf8133e4793fc1e4df33ee1f8c3

SHA1
37429c2bb1c5040469a5e89f76bd11bb26194586

SHA256
ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa

SHA512
6219ddb5e628f2d68cacd2c266527110615b5e330b7cea149cdafda7a9a04302a618b6fb50a2d8517005564c47fd333b27a3ce394c1accca20e4daf18f332796

Download Submit
C:\Windows\svchost.exe

Filesize
146KB

MD5
492f0bf8133e4793fc1e4df33ee1f8c3

SHA1
37429c2bb1c5040469a5e89f76bd11bb26194586

SHA256
ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa

SHA512
6219ddb5e628f2d68cacd2c266527110615b5e330b7cea149cdafda7a9a04302a618b6fb50a2d8517005564c47fd333b27a3ce394c1accca20e4daf18f332796

Download Submit
C:\Windows\svchost.exe

Filesize
146KB

MD5
492f0bf8133e4793fc1e4df33ee1f8c3

SHA1
37429c2bb1c5040469a5e89f76bd11bb26194586

SHA256
ef3ec8b5df5f8d2803ff48b48b5d097450d09117189665346af1198c913a2dfa

SHA512
6219ddb5e628f2d68cacd2c266527110615b5e330b7cea149cdafda7a9a04302a618b6fb50a2d8517005564c47fd333b27a3ce394c1accca20e4daf18f332796

Download Submit