8169d73b40ee6e81a7ab0bae2f3d761102d03877385d0fd2c26f972e9210ada9

General

Target

1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Size

64KB
MD5

385e7b496b00ea29de872509cb29f5be
SHA1

5d944b9957d54698cb0319a3e65362435ef5885b
SHA256

8169d73b40ee6e81a7ab0bae2f3d761102d03877385d0fd2c26f972e9210ada9
SHA512

9fa0973186c1577dea242a0df9b0a23c416da33e7a7f232678669fb0479ca4eec83a0ee21e97c6ce0768e461348740edfdcaefb3324e1572810f493e618c8ba2
SSDEEP

1536:8g/9T8ROcQupqqusN3mrS/ztMhkywRFUnTmc5n4IIIIIIIIIIIIIIIIII/IIIIIh:8g585LpPCrQt7F84IIIIIIIIIIIIIIIz

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 SMSSvk.exe"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSvk.exe"	SMSSvk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe SMSSvk.exe"	SMSSvk.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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	SMSSvk.exe

Disables RegEdit via registry modification 2 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	SMSSvk.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000a000000023c0f-3.dat	aspack_v212_v242

Executes dropped EXE 2 IoCs

pid	Process
1820	SMSSvk.exe
4196	SMSSvk.exe

Modifies system executable filetype association 2 TTPs 8 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.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\\SMSSvk.exe"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe

Drops file in Windows directory 30 IoCs

description	ioc	Process
File created	C:\Windows\SMSSvk.exe	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
File created	C:\Windows\SMSSvk.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	SMSSvk.exe
File created	C:\Windows\SMSSvk.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	SMSSvk.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton SystemWorks 2004 Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\svchost.exe	SMSSvk.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee Personal Firewall Plus 2004 Crack.exe	SMSSvk.exe
File created	C:\Windows\svchost.exe	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee Personal Firewall Plus 2004 Keygen.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Sophos AntiVirus v3.74 Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\svchost.exe	SMSSvk.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Half Life 2 beta patch2 Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee Personal Firewall Plus 2004 Keygen.exe	SMSSvk.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Halo Crack.exe	SMSSvk.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Sophos AntiVirus v3.74 Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Nero Burning ROM v6.0.0.19 Ultra Edition Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\BearShare Pro 4.3.0 Crack.exe	SMSSvk.exe
File created	C:\Windows\message.dat	SMSSvk.exe
File created	C:\Windows\message.htm	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NHL 2004 Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\McAfee Personal Firewall Plus 2004 Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\SMSSvk.exe	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\NHL 2004 Crack.exe	SMSSvk.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\BearShare Pro 4.3.0 Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Half Life 2 beta patch2 Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Halo Crack.exe	SMSSvk.exe
File opened for modification	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Norton SystemWorks 2004 Crack.exe	SMSSvk.exe
File created	C:\Windows\.{21EC2020-3AEA-1069-A2DD-08002B30309D}\Nero Burning ROM v6.0.0.19 Ultra Edition Crack.exe	SMSSvk.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	SMSSvk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SMSSvk.exe

Modifies data under HKEY_USERS 13 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software	SMSSvk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	SMSSvk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	SMSSvk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	SMSSvk.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 = 010000000000000099c63561713cdb01	SMSSvk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced	SMSSvk.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	SMSSvk.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	SMSSvk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached	SMSSvk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer	SMSSvk.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\TelemetrySalt = "6"	SMSSvk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System	SMSSvk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies	SMSSvk.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cmdfile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cmdfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\Shell\open\command	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" %*"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "C:\\Windows\\svchost.exe \"%1\" /S"	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4196	SMSSvk.exe
4196	SMSSvk.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 1820	2388	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe	82
PID 2388 wrote to memory of 1820	2388	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe	82
PID 2388 wrote to memory of 1820	2388	1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe	82

C:\Users\Admin\AppData\Local\Temp\1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\1732233184b4811bba0d47744362d41bafc1a303d700cc8709c5e216f86dee4148689507cc512.dat-decoded.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:2388
- C:\Windows\SMSSvk.exe
  "C:\Windows\SMSSvk.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:1820

C:\Windows\SMSSvk.exe
C:\Windows\SMSSvk.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:4196

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

Replay Monitor

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Downloads

C:\Windows\SMSSvk.exe

Filesize
64KB

MD5
385e7b496b00ea29de872509cb29f5be

SHA1
5d944b9957d54698cb0319a3e65362435ef5885b

SHA256
8169d73b40ee6e81a7ab0bae2f3d761102d03877385d0fd2c26f972e9210ada9

SHA512
9fa0973186c1577dea242a0df9b0a23c416da33e7a7f232678669fb0479ca4eec83a0ee21e97c6ce0768e461348740edfdcaefb3324e1572810f493e618c8ba2

Download Submit
memory/1820-7-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-31-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-21-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-23-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-25-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-70-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-27-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-29-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-64-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-54-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-68-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-56-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-58-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-60-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-66-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2388-62-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/4196-55-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/4196-61-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/4196-67-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/4196-22-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/4196-26-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads