Analysis
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max time kernel
93s -
max time network
94s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
06/08/2024, 01:57
Behavioral task
behavioral1
Sample
40951bd7f106921d4c6197c13148e940N.exe
Resource
win7-20240729-en
windows7-x64
22 signatures
120 seconds
Behavioral task
behavioral2
Sample
40951bd7f106921d4c6197c13148e940N.exe
Resource
win10v2004-20240802-en
windows10-2004-x64
20 signatures
120 seconds
General
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Target
40951bd7f106921d4c6197c13148e940N.exe
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Size
272KB
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MD5
40951bd7f106921d4c6197c13148e940
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SHA1
ffe7e12a7d781fbc27aa6cb5ac152c0a70e2a206
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SHA256
5b825129add180fb9b3cd2a3f2db2c726e291cfffb239a988d94c5d87862a1b7
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SHA512
3124e19a4737e4066b0bc1d97d508046b96b355cbc2f9c87b4d7c457410a4d0d6af941f73bfa7b9591b337ea4f4db15351db13eee2a0721e8267d0843e0584a2
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SSDEEP
3072:WMBGBT753QeRgWgMlIx1ZiXjb6aEF6D0NM9voeLNZ2j8C732:Xw75PRgWg4aAXjb6aEFfooeLNZxC7
Score
10/10
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\system32\\IExplorer.exe\"" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\IExplorer.exe" 40951bd7f106921d4c6197c13148e940N.exe -
Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1" 40951bd7f106921d4c6197c13148e940N.exe -
Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 40951bd7f106921d4c6197c13148e940N.exe -
Disables RegEdit via registry modification 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" 40951bd7f106921d4c6197c13148e940N.exe -
Disables Task Manager via registry modification
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Disables cmd.exe use via registry modification 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "1" 40951bd7f106921d4c6197c13148e940N.exe -
Disables use of System Restore points 1 TTPs
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Modifies system executable filetype association 2 TTPs 13 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe -
resource yara_rule behavioral2/memory/452-0-0x0000000000400000-0x0000000000444000-memory.dmp upx behavioral2/memory/452-5-0x0000000000400000-0x0000000000444000-memory.dmp upx -
Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\tiwi = "C:\\Windows\\tiwi" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSMSGS = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\winlogon.exe" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\LogonAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\imoet.exe" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System Monitoring = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\cute.exe" 40951bd7f106921d4c6197c13148e940N.exe -
Modifies WinLogon 2 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\winlogon\ 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\LegalNoticeCaption = "Cemlekum" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\LegalNoticeText = "Ketika sang Putri tertidur, kunyalakan lampion tuk menghangatkan sang putri, dan ku tunggu sang putri terbangun. Entah sampai kapan dia bisa melihat ketulusan hatiku....(kaya di fs nya siafa yach??) :P " 40951bd7f106921d4c6197c13148e940N.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 3608 452 WerFault.exe 82 -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 40951bd7f106921d4c6197c13148e940N.exe -
Modifies Control Panel 9 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\s1159 = "Tiwi" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\s2359 = "Tiwi" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Desktop\ScreenSaverIsSecure = "0" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Desktop\ScreenSaveTimeOut = "600" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\ 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Mouse\ 40951bd7f106921d4c6197c13148e940N.exe Set value (int) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Mouse\SwapMouseButtons = "1" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Desktop\ 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Desktop\SCRNSAVE.EXE = "C:\\Windows\\system32\\tiwi.SCR" 40951bd7f106921d4c6197c13148e940N.exe -
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Windows Title = "Princess Tiwi is Here.." 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Software\Microsoft\Internet Explorer\Main\ 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Search Page = "http://www.google.com" 40951bd7f106921d4c6197c13148e940N.exe -
Modifies Internet Explorer start page 1 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Start Page = "http://www.google.com" 40951bd7f106921d4c6197c13148e940N.exe -
Modifies registry class 23 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\Install\command\ 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\Install 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\inffile 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\Install\command\Default = "C:\\WINDOWS\\win\\system\\host32.exe /ShowErrorINF" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{645FF040-5081-101B-9F08-00AA002F954E} 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\Install\command 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exefile 40951bd7f106921d4c6197c13148e940N.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D} 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 40951bd7f106921d4c6197c13148e940N.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 452 40951bd7f106921d4c6197c13148e940N.exe 452 40951bd7f106921d4c6197c13148e940N.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 452 40951bd7f106921d4c6197c13148e940N.exe -
System policy modification 1 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System 40951bd7f106921d4c6197c13148e940N.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "1" 40951bd7f106921d4c6197c13148e940N.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\40951bd7f106921d4c6197c13148e940N.exe"C:\Users\Admin\AppData\Local\Temp\40951bd7f106921d4c6197c13148e940N.exe"1⤵
- Modifies WinLogon for persistence
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Disables RegEdit via registry modification
- Disables cmd.exe use via registry modification
- Modifies system executable filetype association
- Adds Run key to start application
- Modifies WinLogon
- System Location Discovery: System Language Discovery
- Modifies Control Panel
- Modifies Internet Explorer settings
- Modifies Internet Explorer start page
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:452 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 8282⤵
- Program crash
PID:3608
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 452 -ip 4521⤵PID:2916
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
1Winlogon Helper DLL
2Event Triggered Execution
1Change Default File Association
1Privilege Escalation
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
1Winlogon Helper DLL
2Event Triggered Execution
1Change Default File Association
1