Analysis
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max time kernel
121s -
max time network
127s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
29/05/2024, 19:47
Behavioral task
behavioral1
Sample
261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe
Resource
win7-20240221-en
windows7-x64
16 signatures
150 seconds
Behavioral task
behavioral2
Sample
261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe
Resource
win10v2004-20240508-en
windows10-2004-x64
14 signatures
150 seconds
General
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Target
261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe
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Size
203KB
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MD5
a82cf8d7e3773de8d8e238c03110f05c
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SHA1
028a58bdf4ecd7e61e63e422f80d26d2ffb247a4
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SHA256
261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550
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SHA512
23d1c42a336964c97ca1d5c8f4955c873c55ffa245ebb59f2fb3b8c7faaac9b8d4067462471103e74836a1273b50e5a612ed005638089eb75002fc32b04b887d
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SSDEEP
3072:2/5F/E7tEf0s+K+tYlpJH7iXQNgggHlxDZiYLK5WpkEoutdH4:2hF4cR+VWJH7igNgjdFKsboS
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\"" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\IExplorer.exe" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe -
Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe -
Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe -
UPX dump on OEP (original entry point) 2 IoCs
resource yara_rule behavioral1/memory/2648-0-0x0000000000400000-0x0000000000430000-memory.dmp UPX behavioral1/memory/2648-3-0x0000000000400000-0x0000000000430000-memory.dmp UPX -
Disables RegEdit via registry modification 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe -
resource yara_rule behavioral1/memory/2648-0-0x0000000000400000-0x0000000000430000-memory.dmp upx behavioral1/memory/2648-3-0x0000000000400000-0x0000000000430000-memory.dmp upx -
Adds Run key to start application 2 TTPs 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\System Monitoring = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\LSASS.EXE" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\xk = "C:\\Windows\\xk.exe" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSMSGS = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\WINLOGON.EXE" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\ServiceAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\SERVICES.EXE" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\LogonAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\CSRSS.EXE" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 2884 2648 WerFault.exe 27 -
Modifies Control Panel 4 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Control Panel\Desktop\ 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Control Panel\Desktop\SCRNSAVE.EXE = "C:\\Windows\\system32\\Mig~mig.SCR" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Control Panel\Desktop\ScreenSaverIsSecure = "0" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Control Panel\Desktop\ScreenSaveTimeOut = "600" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe -
Modifies registry class 15 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exefile 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2648 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2648 wrote to memory of 2884 2648 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe 28 PID 2648 wrote to memory of 2884 2648 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe 28 PID 2648 wrote to memory of 2884 2648 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe 28 PID 2648 wrote to memory of 2884 2648 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe 28 -
System policy modification 1 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoFolderOptions = "1" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" 261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.exe"C:\Users\Admin\AppData\Local\Temp\261cb6573e26312da7b12ced441fbe2363ecbb85c49041ec9851973469f60550.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
- Modifies system executable filetype association
- Adds Run key to start application
- Modifies Control Panel
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2648 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 3602⤵
- Program crash
PID:2884
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Change Default File Association
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Change Default File Association
1