3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\system32\\IExplorer.exe\""	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\IExplorer.exe"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Modifies system executable filetype association 2 TTPs 13 IoCs

persistence

Modify Registry

Change Default File Association

T1042

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

Hidden Files and Directories

Modify Registry

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

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

Hidden Files and Directories

Modify Registry

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Disables RegEdit via registry modification 2 IoCs

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Disables use of System Restore points 1 TTPs
evasion

Inhibit System Recovery
T1490

Executes dropped EXE 14 IoCs

Processes:

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

pid	process
3556	xk.exe
3192	IExplorer.exe
4108	WINLOGON.EXE
4224	xk.exe
3984	IExplorer.exe
4804	WINLOGON.EXE
3880	CSRSS.EXE
2528	SERVICES.EXE
992	LSASS.EXE
2272	SMSS.EXE
4180	CSRSS.EXE
764	SERVICES.EXE
3116	LSASS.EXE
544	SMSS.EXE

UPX packed file 40 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4048-132-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\xk.exe	upx
C:\Windows\xk.exe	upx
behavioral2/memory/3556-138-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\SysWOW64\IExplorer.exe	upx
C:\Windows\SysWOW64\IExplorer.exe	upx
behavioral2/memory/3192-144-0x0000000000400000-0x000000000042F000-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/4108-149-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/4108-151-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\xk.exe	upx
behavioral2/memory/4224-156-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\SysWOW64\IExplorer.exe	upx
behavioral2/memory/3984-161-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\WINLOGON.EXE	upx
behavioral2/memory/4804-166-0x0000000000400000-0x000000000042F000-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/3880-172-0x0000000000400000-0x000000000042F000-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/2528-178-0x0000000000400000-0x000000000042F000-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/992-184-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE	upx
C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE	upx
behavioral2/memory/2272-190-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/4048-191-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE	upx
C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE	upx
behavioral2/memory/4180-196-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/764-201-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE	upx
behavioral2/memory/3116-204-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/3116-207-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE	upx
behavioral2/memory/544-212-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/4048-213-0x0000000000400000-0x000000000042F000-memory.dmp	upx

Adds Run key to start application 2 TTPs 7 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

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"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\Run\	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\xk = "C:\\Windows\\xk.exe"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSMSGS = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\WINLOGON.EXE"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ServiceAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\SERVICES.EXE"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\LogonAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\CSRSS.EXE"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Drops desktop.ini file(s) 2 IoCs

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
File opened for modification	C:\desktop.ini	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File created	C:\desktop.ini	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.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:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
File opened (read-only)	\??\M:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\P:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\Y:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\T:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\U:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\V:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\W:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\O:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\X:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\F:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\I:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\K:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\L:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\J:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\N:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\Q:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\R:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\B:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\E:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\G:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\H:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\S:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened (read-only)	\??\Z:	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Drops file in System32 directory 6 IoCs

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\IExplorer.exe	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened for modification	C:\Windows\SysWOW64\Mig2.scr	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File opened for modification	C:\Windows\SysWOW64\shell.exe	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File created	C:\Windows\SysWOW64\shell.exe	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File created	C:\Windows\SysWOW64\Mig2.scr	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File created	C:\Windows\SysWOW64\IExplorer.exe	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Drops file in Windows directory 2 IoCs

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
File opened for modification	C:\Windows\xk.exe	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
File created	C:\Windows\xk.exe	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Modifies Control Panel 4 IoCs

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\SCRNSAVE.EXE = "C:\\Windows\\system32\\Mig~mig.SCR"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\ScreenSaverIsSecure = "0"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\ScreenSaveTimeOut = "600"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Modifies registry class 15 IoCs

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

pid	process
4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

Suspicious use of SetWindowsHookEx 15 IoCs

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exexk.exeIExplorer.exeWINLOGON.EXExk.exeIExplorer.exeWINLOGON.EXECSRSS.EXESERVICES.EXELSASS.EXESMSS.EXECSRSS.EXESERVICES.EXELSASS.EXESMSS.EXE

pid	process
4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
3556	xk.exe
3192	IExplorer.exe
4108	WINLOGON.EXE
4224	xk.exe
3984	IExplorer.exe
4804	WINLOGON.EXE
3880	CSRSS.EXE
2528	SERVICES.EXE
992	LSASS.EXE
2272	SMSS.EXE
4180	CSRSS.EXE
764	SERVICES.EXE
3116	LSASS.EXE
544	SMSS.EXE

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	pid	process	target process
PID 4048 wrote to memory of 3556	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	xk.exe
PID 4048 wrote to memory of 3556	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	xk.exe
PID 4048 wrote to memory of 3556	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	xk.exe
PID 4048 wrote to memory of 3192	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	IExplorer.exe
PID 4048 wrote to memory of 3192	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	IExplorer.exe
PID 4048 wrote to memory of 3192	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	IExplorer.exe
PID 4048 wrote to memory of 4108	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	WINLOGON.EXE
PID 4048 wrote to memory of 4108	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	WINLOGON.EXE
PID 4048 wrote to memory of 4108	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	WINLOGON.EXE
PID 4048 wrote to memory of 4224	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	xk.exe
PID 4048 wrote to memory of 4224	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	xk.exe
PID 4048 wrote to memory of 4224	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	xk.exe
PID 4048 wrote to memory of 3984	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	IExplorer.exe
PID 4048 wrote to memory of 3984	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	IExplorer.exe
PID 4048 wrote to memory of 3984	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	IExplorer.exe
PID 4048 wrote to memory of 4804	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	WINLOGON.EXE
PID 4048 wrote to memory of 4804	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	WINLOGON.EXE
PID 4048 wrote to memory of 4804	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	WINLOGON.EXE
PID 4048 wrote to memory of 3880	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	CSRSS.EXE
PID 4048 wrote to memory of 3880	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	CSRSS.EXE
PID 4048 wrote to memory of 3880	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	CSRSS.EXE
PID 4048 wrote to memory of 2528	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SERVICES.EXE
PID 4048 wrote to memory of 2528	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SERVICES.EXE
PID 4048 wrote to memory of 2528	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SERVICES.EXE
PID 4048 wrote to memory of 992	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	LSASS.EXE
PID 4048 wrote to memory of 992	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	LSASS.EXE
PID 4048 wrote to memory of 992	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	LSASS.EXE
PID 4048 wrote to memory of 2272	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SMSS.EXE
PID 4048 wrote to memory of 2272	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SMSS.EXE
PID 4048 wrote to memory of 2272	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SMSS.EXE
PID 4048 wrote to memory of 4180	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	CSRSS.EXE
PID 4048 wrote to memory of 4180	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	CSRSS.EXE
PID 4048 wrote to memory of 4180	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	CSRSS.EXE
PID 4048 wrote to memory of 764	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SERVICES.EXE
PID 4048 wrote to memory of 764	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SERVICES.EXE
PID 4048 wrote to memory of 764	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SERVICES.EXE
PID 4048 wrote to memory of 3116	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	LSASS.EXE
PID 4048 wrote to memory of 3116	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	LSASS.EXE
PID 4048 wrote to memory of 3116	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	LSASS.EXE
PID 4048 wrote to memory of 544	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SMSS.EXE
PID 4048 wrote to memory of 544	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SMSS.EXE
PID 4048 wrote to memory of 544	4048	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe	SMSS.EXE

System policy modification 1 TTPs 4 IoCs

Modify Registry

Processes:

3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoFolderOptions = "1"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe

C:\Users\Admin\AppData\Local\Temp\3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.exe
"C:\Users\Admin\AppData\Local\Temp\3880f8fe33d6d52589a613b5d764e1d864c6ceeac2abd5ac7911176ce6315a42.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:4048

C:\Windows\xk.exe
C:\Windows\xk.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3556

C:\Windows\SysWOW64\IExplorer.exe
C:\Windows\system32\IExplorer.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3192

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:4108

C:\Windows\xk.exe
C:\Windows\xk.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4224

C:\Windows\SysWOW64\IExplorer.exe
C:\Windows\system32\IExplorer.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3984

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:4804

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:3880

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:2528

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:992

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:2272

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:4180

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:764

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:3116

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:544

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