37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\system32\\IExplorer.exe\""	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\IExplorer.exe"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Modifies system executable filetype association 2 TTPs 13 IoCs

persistence

Modify Registry

Change Default File Association

T1042

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

Hidden Files and Directories

Modify Registry

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

Hidden Files and Directories

Modify Registry

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Disables RegEdit via registry modification 2 IoCs

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Disables use of System Restore points 1 TTPs
evasion

Inhibit System Recovery
T1490

Executes dropped EXE 14 IoCs

Processes:

xk.exeIExplorer.exeWINLOGON.EXECSRSS.EXESERVICES.EXELSASS.EXESMSS.EXExk.exeIExplorer.exeWINLOGON.EXECSRSS.EXESERVICES.EXELSASS.EXESMSS.EXE

pid	process
532	xk.exe
1012	IExplorer.exe
1732	WINLOGON.EXE
1084	CSRSS.EXE
1264	SERVICES.EXE
4816	LSASS.EXE
4728	SMSS.EXE
4808	xk.exe
4340	IExplorer.exe
3724	WINLOGON.EXE
1520	CSRSS.EXE
708	SERVICES.EXE
3172	LSASS.EXE
2104	SMSS.EXE

UPX packed file 40 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/3112-130-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\xk.exe	upx
C:\Windows\xk.exe	upx
C:\Windows\SysWOW64\IExplorer.exe	upx
C:\Windows\SysWOW64\IExplorer.exe	upx
behavioral2/memory/532-141-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/1012-144-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\WINLOGON.EXE	upx
C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE	upx
behavioral2/memory/1732-148-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/1732-151-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE	upx
C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE	upx
behavioral2/memory/1084-157-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE	upx
C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE	upx
behavioral2/memory/1264-163-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE	upx
C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE	upx
behavioral2/memory/4816-169-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE	upx
C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE	upx
behavioral2/memory/4728-175-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/3112-176-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\xk.exe	upx
behavioral2/memory/4808-182-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\SysWOW64\IExplorer.exe	upx
behavioral2/memory/4340-187-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\WINLOGON.EXE	upx
behavioral2/memory/3724-192-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE	upx
behavioral2/memory/1520-196-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE	upx
behavioral2/memory/708-199-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/708-202-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE	upx
behavioral2/memory/3172-207-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE	upx
behavioral2/memory/2104-212-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/3112-213-0x0000000000400000-0x000000000042F000-memory.dmp	upx

Adds Run key to start application 2 TTPs 7 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\LogonAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\CSRSS.EXE"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System Monitoring = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\LSASS.EXE"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows\CurrentVersion\Run\	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\xk = "C:\\Windows\\xk.exe"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSMSGS = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\WINLOGON.EXE"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ServiceAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\SERVICES.EXE"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Drops desktop.ini file(s) 2 IoCs

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
File opened for modification	C:\desktop.ini	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File created	C:\desktop.ini	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
File opened (read-only)	\??\G:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\I:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\J:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\L:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\O:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\P:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\E:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\F:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\X:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\Y:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\N:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\T:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\R:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\S:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\V:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\W:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\M:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\Q:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\K:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\U:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\Z:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\B:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened (read-only)	\??\H:	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Drops file in System32 directory 6 IoCs

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
File created	C:\Windows\SysWOW64\IExplorer.exe	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened for modification	C:\Windows\SysWOW64\IExplorer.exe	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened for modification	C:\Windows\SysWOW64\Mig2.scr	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File opened for modification	C:\Windows\SysWOW64\shell.exe	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File created	C:\Windows\SysWOW64\shell.exe	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File created	C:\Windows\SysWOW64\Mig2.scr	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Drops file in Windows directory 2 IoCs

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
File opened for modification	C:\Windows\xk.exe	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
File created	C:\Windows\xk.exe	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Modifies Control Panel 4 IoCs

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\Desktop\	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\Desktop\SCRNSAVE.EXE = "C:\\Windows\\system32\\Mig~mig.SCR"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\Desktop\ScreenSaverIsSecure = "0"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\Desktop\ScreenSaveTimeOut = "600"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Modifies registry class 15 IoCs

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

pid	process
3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

Suspicious use of SetWindowsHookEx 15 IoCs

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exexk.exeIExplorer.exeWINLOGON.EXECSRSS.EXESERVICES.EXELSASS.EXESMSS.EXExk.exeIExplorer.exeWINLOGON.EXECSRSS.EXESERVICES.EXELSASS.EXESMSS.EXE

pid	process
3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
532	xk.exe
1012	IExplorer.exe
1732	WINLOGON.EXE
1084	CSRSS.EXE
1264	SERVICES.EXE
4816	LSASS.EXE
4728	SMSS.EXE
4808	xk.exe
4340	IExplorer.exe
3724	WINLOGON.EXE
1520	CSRSS.EXE
708	SERVICES.EXE
3172	LSASS.EXE
2104	SMSS.EXE

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	pid	process	target process
PID 3112 wrote to memory of 532	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	xk.exe
PID 3112 wrote to memory of 532	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	xk.exe
PID 3112 wrote to memory of 532	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	xk.exe
PID 3112 wrote to memory of 1012	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	IExplorer.exe
PID 3112 wrote to memory of 1012	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	IExplorer.exe
PID 3112 wrote to memory of 1012	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	IExplorer.exe
PID 3112 wrote to memory of 1732	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	WINLOGON.EXE
PID 3112 wrote to memory of 1732	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	WINLOGON.EXE
PID 3112 wrote to memory of 1732	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	WINLOGON.EXE
PID 3112 wrote to memory of 1084	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	CSRSS.EXE
PID 3112 wrote to memory of 1084	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	CSRSS.EXE
PID 3112 wrote to memory of 1084	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	CSRSS.EXE
PID 3112 wrote to memory of 1264	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SERVICES.EXE
PID 3112 wrote to memory of 1264	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SERVICES.EXE
PID 3112 wrote to memory of 1264	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SERVICES.EXE
PID 3112 wrote to memory of 4816	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	LSASS.EXE
PID 3112 wrote to memory of 4816	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	LSASS.EXE
PID 3112 wrote to memory of 4816	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	LSASS.EXE
PID 3112 wrote to memory of 4728	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SMSS.EXE
PID 3112 wrote to memory of 4728	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SMSS.EXE
PID 3112 wrote to memory of 4728	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SMSS.EXE
PID 3112 wrote to memory of 4808	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	xk.exe
PID 3112 wrote to memory of 4808	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	xk.exe
PID 3112 wrote to memory of 4808	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	xk.exe
PID 3112 wrote to memory of 4340	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	IExplorer.exe
PID 3112 wrote to memory of 4340	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	IExplorer.exe
PID 3112 wrote to memory of 4340	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	IExplorer.exe
PID 3112 wrote to memory of 3724	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	WINLOGON.EXE
PID 3112 wrote to memory of 3724	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	WINLOGON.EXE
PID 3112 wrote to memory of 3724	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	WINLOGON.EXE
PID 3112 wrote to memory of 1520	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	CSRSS.EXE
PID 3112 wrote to memory of 1520	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	CSRSS.EXE
PID 3112 wrote to memory of 1520	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	CSRSS.EXE
PID 3112 wrote to memory of 708	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SERVICES.EXE
PID 3112 wrote to memory of 708	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SERVICES.EXE
PID 3112 wrote to memory of 708	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SERVICES.EXE
PID 3112 wrote to memory of 3172	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	LSASS.EXE
PID 3112 wrote to memory of 3172	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	LSASS.EXE
PID 3112 wrote to memory of 3172	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	LSASS.EXE
PID 3112 wrote to memory of 2104	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SMSS.EXE
PID 3112 wrote to memory of 2104	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SMSS.EXE
PID 3112 wrote to memory of 2104	3112	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe	SMSS.EXE

System policy modification 1 TTPs 4 IoCs

Modify Registry

Processes:

37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoFolderOptions = "1"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe

C:\Users\Admin\AppData\Local\Temp\37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe
"C:\Users\Admin\AppData\Local\Temp\37d0e176d83113d87aae7afccd5313f0e95b02100516fd50f2d94ed3ea9b8830.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Disables RegEdit via registry modification
- Adds Run key to start application
- Drops desktop.ini file(s)
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3112

C:\Windows\xk.exe
C:\Windows\xk.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:532

C:\Windows\SysWOW64\IExplorer.exe
C:\Windows\system32\IExplorer.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1012

C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1732

C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1084

C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1264

C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4816

C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4728

C:\Windows\xk.exe
C:\Windows\xk.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4808

C:\Windows\SysWOW64\IExplorer.exe
C:\Windows\system32\IExplorer.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4340

C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3724

C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1520

C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:708

C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3172

C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE
"C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2104

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Change Default File Association

T1042

Hidden Files and Directories

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Hidden Files and Directories