f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214

General

Target

f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Size

136KB
MD5

bfb932c0c15243704cf27cb8c7eff520
SHA1

8c9e5e096e0f5855e435978b932d8ab63e859a29
SHA256

f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214
SHA512

b0ce2a712cbe8185dd856a3b46410976ec2d42495019a808f9dee1ed9b84d44a7f23fd295a1a684859c5319b54e9702a00825763f3fe4c78e4989afd0f47dee5
SSDEEP

3072:3LVoDvPd+A4WhkhXDl+i1lApwH08TdpIIIIIIIIIIIIIIIII/IIIIIIIIIIIIII/:ZopGGgbiwU8JY

Score

10^/10

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 SMSSvf.exe"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSvf.exe"	SMSSvf.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSvf.exe"	SMSSvf.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-1-5-21-1537126222-899333903-2037027349-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	SMSSvf.exe

Disables RegEdit via registry modification 2 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	SMSSvf.exe

Executes dropped EXE 2 IoCs

pid	Process
1340	SMSSvf.exe
4944	SMSSvf.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\piffile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.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\\SMSSvf.exe"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe

Drops file in Windows directory 28 IoCs

description	ioc	Process
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Dragon NaturallySpeaking 8 ISO Multilanguage Crack.exe	SMSSvf.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\iMesh 4.2 Ad Remover Crack.exe	SMSSvf.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Sophos AntiVirus v3.74 Crack.exe	SMSSvf.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Macromedia Studio MX 2004 AllApps Crack.exe	SMSSvf.exe
File opened for modification	C:\Windows\svchost.exe	SMSSvf.exe
File opened for modification	C:\Windows\svchost.exe	SMSSvf.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Dragon NaturallySpeaking 8 ISO Multilanguage Crack.exe	SMSSvf.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NetObjects Fusion v7.5 Crack.exe	SMSSvf.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Macromedia Studio MX 2004 AllApps Crack.exe	SMSSvf.exe
File created	C:\Windows\SMSSvf.exe	SMSSvf.exe
File created	C:\Windows\message.htm	SMSSvf.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Macromedia Contribute 2 Crack.exe	SMSSvf.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NHL 2004 Crack.exe	SMSSvf.exe
File created	C:\Windows\svchost.exe	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	SMSSvf.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NetObjects Fusion v7.5 Crack.exe	SMSSvf.exe
File created	C:\Windows\SMSSvf.exe	SMSSvf.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Microsoft Office System Professional V2003 Keygen.exe	SMSSvf.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\iMesh 4.2 Ad Remover Crack.exe	SMSSvf.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Microsoft Office System Professional V2003 Keygen.exe	SMSSvf.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Sophos AntiVirus v3.74 Crack.exe	SMSSvf.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Macromedia Contribute 2 Crack.exe	SMSSvf.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NHL 2004 Crack.exe	SMSSvf.exe
File created	C:\Windows\SMSSvf.exe	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	SMSSvf.exe
File opened for modification	C:\Windows\SMSSvf.exe	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
File created	C:\Windows\message.dat	SMSSvf.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	SMSSvf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SMSSvf.exe

Modifies data under HKEY_USERS 13 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	SMSSvf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies	SMSSvf.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 = 0100000000000000408e95fa3365db01	SMSSvf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer	SMSSvf.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\TelemetrySalt = "2"	SMSSvf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System	SMSSvf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	SMSSvf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	SMSSvf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	SMSSvf.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	SMSSvf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached	SMSSvf.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced	SMSSvf.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	SMSSvf.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" /S"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cmdfile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cmdfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\Shell\open\command	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4184 wrote to memory of 1340	4184	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe	77
PID 4184 wrote to memory of 1340	4184	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe	77
PID 4184 wrote to memory of 1340	4184	f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe	77

C:\Users\Admin\AppData\Local\Temp\f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.exe
"C:\Users\Admin\AppData\Local\Temp\f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214N.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:4184
- C:\Windows\SMSSvf.exe
  "C:\Windows\SMSSvf.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:1340

C:\Windows\SMSSvf.exe
C:\Windows\SMSSvf.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
PID:4944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SMSSvf.exe

Filesize
136KB

MD5
bfb932c0c15243704cf27cb8c7eff520

SHA1
8c9e5e096e0f5855e435978b932d8ab63e859a29

SHA256
f8df85307810f9e4d7de55e28a2ad39eae1439e08e05c8b665addd7094bd9214

SHA512
b0ce2a712cbe8185dd856a3b46410976ec2d42495019a808f9dee1ed9b84d44a7f23fd295a1a684859c5319b54e9702a00825763f3fe4c78e4989afd0f47dee5

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Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads