b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\system32\\IExplorer.exe\""	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\IExplorer.exe"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Modifies system executable filetype association 2 TTPs 13 IoCs

persistence

Modify Registry

Change Default File Association

T1042

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

Hidden Files and Directories

Modify Registry

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

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

Hidden Files and Directories

Modify Registry

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Disables RegEdit via registry modification 2 IoCs

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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.EXExk.exeIExplorer.exeWINLOGON.EXECSRSS.EXESERVICES.EXELSASS.EXESMSS.EXELSASS.EXESMSS.EXE

pid	process
3920	xk.exe
3588	IExplorer.exe
4904	WINLOGON.EXE
4300	CSRSS.EXE
2128	SERVICES.EXE
4720	xk.exe
4616	IExplorer.exe
4696	WINLOGON.EXE
4344	CSRSS.EXE
1300	SERVICES.EXE
960	LSASS.EXE
4976	SMSS.EXE
4796	LSASS.EXE
3728	SMSS.EXE

UPX packed file 39 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4860-130-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\xk.exe	upx
C:\Windows\xk.exe	upx
behavioral2/memory/3920-139-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\SysWOW64\IExplorer.exe	upx
C:\Windows\SysWOW64\IExplorer.exe	upx
behavioral2/memory/3588-144-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE	upx
C:\Users\Admin\AppData\Local\WINDOWS\WINLOGON.EXE	upx
behavioral2/memory/4904-150-0x0000000000400000-0x000000000042F000-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/4300-156-0x0000000000400000-0x000000000042F000-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/2128-162-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\xk.exe	upx
behavioral2/memory/4720-168-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Windows\SysWOW64\IExplorer.exe	upx
C:\Users\Admin\AppData\Local\WINDOWS\WINLOGON.EXE	upx
behavioral2/memory/4616-172-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/4696-179-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE	upx
C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE	upx
behavioral2/memory/4344-183-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/1300-187-0x0000000000400000-0x000000000042F000-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/960-193-0x0000000000400000-0x000000000042F000-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/4976-197-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/4976-200-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/4860-201-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE	upx
behavioral2/memory/4796-207-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE	upx
behavioral2/memory/3728-211-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/4860-212-0x0000000000400000-0x000000000042F000-memory.dmp	upx

Adds Run key to start application 2 TTPs 7 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\Run\	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\xk = "C:\\Windows\\xk.exe"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\LogonAdmin = "C:\\Users\\Admin\\Local Settings\\Application Data\\WINDOWS\\CSRSS.EXE"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Drops desktop.ini file(s) 2 IoCs

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	ioc	process
File created	C:\desktop.ini	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened for modification	C:\desktop.ini	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	ioc	process
File opened (read-only)	\??\Q:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\G:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\K:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\H:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\O:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\P:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\S:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\W:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\X:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\E:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\F:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\M:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\N:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\R:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\U:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\Y:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\Z:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\B:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\L:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\T:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\V:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\I:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened (read-only)	\??\J:	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Drops file in System32 directory 6 IoCs

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\shell.exe	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File created	C:\Windows\SysWOW64\shell.exe	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File created	C:\Windows\SysWOW64\Mig2.scr	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File created	C:\Windows\SysWOW64\IExplorer.exe	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened for modification	C:\Windows\SysWOW64\IExplorer.exe	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File opened for modification	C:\Windows\SysWOW64\Mig2.scr	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Drops file in Windows directory 2 IoCs

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	ioc	process
File opened for modification	C:\Windows\xk.exe	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
File created	C:\Windows\xk.exe	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Modifies Control Panel 4 IoCs

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\ScreenSaverIsSecure = "0"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\ScreenSaveTimeOut = "600"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Modifies registry class 15 IoCs

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\piffile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\ = "File Folder"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\comfile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\system32\\shell.exe\" \"%1\" %*"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shell\open	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

pid	process
4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

Suspicious use of SetWindowsHookEx 15 IoCs

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exexk.exeIExplorer.exeWINLOGON.EXECSRSS.EXESERVICES.EXExk.exeIExplorer.exeWINLOGON.EXECSRSS.EXESERVICES.EXELSASS.EXESMSS.EXELSASS.EXESMSS.EXE

pid	process
4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
3920	xk.exe
3588	IExplorer.exe
4904	WINLOGON.EXE
4300	CSRSS.EXE
2128	SERVICES.EXE
4720	xk.exe
4616	IExplorer.exe
4696	WINLOGON.EXE
4344	CSRSS.EXE
1300	SERVICES.EXE
960	LSASS.EXE
4976	SMSS.EXE
4796	LSASS.EXE
3728	SMSS.EXE

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	pid	process	target process
PID 4860 wrote to memory of 3920	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	xk.exe
PID 4860 wrote to memory of 3920	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	xk.exe
PID 4860 wrote to memory of 3920	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	xk.exe
PID 4860 wrote to memory of 3588	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	IExplorer.exe
PID 4860 wrote to memory of 3588	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	IExplorer.exe
PID 4860 wrote to memory of 3588	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	IExplorer.exe
PID 4860 wrote to memory of 4904	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	WINLOGON.EXE
PID 4860 wrote to memory of 4904	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	WINLOGON.EXE
PID 4860 wrote to memory of 4904	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	WINLOGON.EXE
PID 4860 wrote to memory of 4300	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	CSRSS.EXE
PID 4860 wrote to memory of 4300	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	CSRSS.EXE
PID 4860 wrote to memory of 4300	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	CSRSS.EXE
PID 4860 wrote to memory of 2128	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SERVICES.EXE
PID 4860 wrote to memory of 2128	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SERVICES.EXE
PID 4860 wrote to memory of 2128	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SERVICES.EXE
PID 4860 wrote to memory of 4720	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	xk.exe
PID 4860 wrote to memory of 4720	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	xk.exe
PID 4860 wrote to memory of 4720	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	xk.exe
PID 4860 wrote to memory of 4616	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	IExplorer.exe
PID 4860 wrote to memory of 4616	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	IExplorer.exe
PID 4860 wrote to memory of 4616	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	IExplorer.exe
PID 4860 wrote to memory of 4696	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	WINLOGON.EXE
PID 4860 wrote to memory of 4696	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	WINLOGON.EXE
PID 4860 wrote to memory of 4696	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	WINLOGON.EXE
PID 4860 wrote to memory of 4344	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	CSRSS.EXE
PID 4860 wrote to memory of 4344	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	CSRSS.EXE
PID 4860 wrote to memory of 4344	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	CSRSS.EXE
PID 4860 wrote to memory of 1300	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SERVICES.EXE
PID 4860 wrote to memory of 1300	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SERVICES.EXE
PID 4860 wrote to memory of 1300	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SERVICES.EXE
PID 4860 wrote to memory of 960	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	LSASS.EXE
PID 4860 wrote to memory of 960	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	LSASS.EXE
PID 4860 wrote to memory of 960	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	LSASS.EXE
PID 4860 wrote to memory of 4976	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SMSS.EXE
PID 4860 wrote to memory of 4976	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SMSS.EXE
PID 4860 wrote to memory of 4976	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SMSS.EXE
PID 4860 wrote to memory of 4796	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	LSASS.EXE
PID 4860 wrote to memory of 4796	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	LSASS.EXE
PID 4860 wrote to memory of 4796	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	LSASS.EXE
PID 4860 wrote to memory of 3728	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SMSS.EXE
PID 4860 wrote to memory of 3728	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SMSS.EXE
PID 4860 wrote to memory of 3728	4860	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe	SMSS.EXE

System policy modification 1 TTPs 4 IoCs

Modify Registry

Processes:

b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoFolderOptions = "1"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe

C:\Users\Admin\AppData\Local\Temp\b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.exe
"C:\Users\Admin\AppData\Local\Temp\b586e273e32d82be2dd0b63643844b390f2cba6e28fdf9f4987820794d4c04fa.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:4860

C:\Windows\xk.exe
C:\Windows\xk.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3920

C:\Windows\SysWOW64\IExplorer.exe
C:\Windows\system32\IExplorer.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3588

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:4904

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:4300

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:2128

C:\Windows\xk.exe
C:\Windows\xk.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4720

C:\Windows\SysWOW64\IExplorer.exe
C:\Windows\system32\IExplorer.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4616

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:4696

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:4344

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:1300

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:960

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:4976

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:4796

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:3728

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