sality | ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5

Modify Existing Service

T1031

Processes:

ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exeAu_.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe

Sality
Sality is backdoor written in C++, first discovered in 2003.
backdoor sality

UAC bypass 3 TTPs 2 IoCs

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

Processes:

ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exeAu_.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Au_.exe

Windows security bypass 2 TTPs 12 IoCs

Disabling Security Tools

Modify Registry

Processes:

ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exeAu_.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe

Executes dropped EXE 1 IoCs

Processes:

Au_.exe

pid process

320 Au_.exe

pid	process
320	Au_.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2640-132-0x0000000002360000-0x00000000033EE000-memory.dmp	upx
behavioral2/memory/2640-138-0x0000000002360000-0x00000000033EE000-memory.dmp	upx
behavioral2/memory/320-141-0x0000000004360000-0x00000000053EE000-memory.dmp	upx
behavioral2/memory/320-144-0x0000000004360000-0x00000000053EE000-memory.dmp	upx
behavioral2/memory/320-145-0x0000000004360000-0x00000000053EE000-memory.dmp	upx

Loads dropped DLL 1 IoCs

Processes:

Au_.exe

pid process

320 Au_.exe

pid	process
320	Au_.exe

Windows security modification 2 TTPs 14 IoCs

Disabling Security Tools

Modify Registry

Processes:

Au_.exeac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\Svc	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	Au_.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\Svc	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	Au_.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	Au_.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

Processes:

ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exeAu_.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Au_.exe

Enumerates connected drives 3 TTPs 19 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:

Au_.exe

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

Drops autorun.inf file 1 TTPs 1 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media
T1091

Processes:

Au_.exe

description ioc process

File opened for modification C:\autorun.inf Au_.exe

description	ioc	process
File opened for modification	C:\autorun.inf	Au_.exe

Drops file in Program Files directory 11 IoCs

Processes:

Au_.exe

description	ioc	process
File opened for modification	C:\PROGRAM FILES\COMMON FILES\MICROSOFT SHARED\CLICKTORUN\MavInject32.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\COMMON FILES\MICROSOFT SHARED\CLICKTORUN\OfficeC2RClient.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\COMMON FILES\MICROSOFT SHARED\CLICKTORUN\OfficeClickToRun.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\7-ZIP\7zG.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\COMMON FILES\MICROSOFT SHARED\CLICKTORUN\appvcleaner.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\COMMON FILES\MICROSOFT SHARED\CLICKTORUN\AppVShNotify.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\COMMON FILES\MICROSOFT SHARED\CLICKTORUN\InspectorOfficeGadget.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\COMMON FILES\MICROSOFT SHARED\CLICKTORUN\IntegratedOffice.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\7-ZIP\7z.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\7-ZIP\7zFM.exe	Au_.exe
File opened for modification	C:\PROGRAM FILES\7-ZIP\Uninstall.exe	Au_.exe

Drops file in Windows directory 1 IoCs

Processes:

ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe

description ioc process

File opened for modification C:\Windows\SYSTEM.INI ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Windows\SYSTEM.INI	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exeAu_.exe

pid	process
2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe
320	Au_.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exeAu_.exe

description	pid	process
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe
Token: SeDebugPrivilege	320	Au_.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exeAu_.exe

description	pid	process	target process
PID 2640 wrote to memory of 776	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe	fontdrvhost.exe
PID 2640 wrote to memory of 784	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe	fontdrvhost.exe
PID 2640 wrote to memory of 1016	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe	dwm.exe
PID 2640 wrote to memory of 320	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe	Au_.exe
PID 2640 wrote to memory of 320	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe	Au_.exe
PID 2640 wrote to memory of 320	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe	Au_.exe
PID 2640 wrote to memory of 2416	2640	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe	sihost.exe
PID 320 wrote to memory of 776	320	Au_.exe	fontdrvhost.exe
PID 320 wrote to memory of 784	320	Au_.exe	fontdrvhost.exe
PID 320 wrote to memory of 1016	320	Au_.exe	dwm.exe
PID 320 wrote to memory of 2416	320	Au_.exe	sihost.exe
PID 320 wrote to memory of 2428	320	Au_.exe	svchost.exe
PID 320 wrote to memory of 2608	320	Au_.exe	taskhostw.exe
PID 320 wrote to memory of 2584	320	Au_.exe	Explorer.EXE
PID 320 wrote to memory of 2836	320	Au_.exe	svchost.exe
PID 320 wrote to memory of 3276	320	Au_.exe	DllHost.exe
PID 320 wrote to memory of 3384	320	Au_.exe	StartMenuExperienceHost.exe
PID 320 wrote to memory of 3452	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 3552	320	Au_.exe	SearchApp.exe
PID 320 wrote to memory of 3816	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 4164	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 1640	320	Au_.exe	backgroundTaskHost.exe
PID 320 wrote to memory of 776	320	Au_.exe	fontdrvhost.exe
PID 320 wrote to memory of 784	320	Au_.exe	fontdrvhost.exe
PID 320 wrote to memory of 1016	320	Au_.exe	dwm.exe
PID 320 wrote to memory of 2416	320	Au_.exe	sihost.exe
PID 320 wrote to memory of 2428	320	Au_.exe	svchost.exe
PID 320 wrote to memory of 2608	320	Au_.exe	taskhostw.exe
PID 320 wrote to memory of 2584	320	Au_.exe	Explorer.EXE
PID 320 wrote to memory of 2836	320	Au_.exe	svchost.exe
PID 320 wrote to memory of 3276	320	Au_.exe	DllHost.exe
PID 320 wrote to memory of 3384	320	Au_.exe	StartMenuExperienceHost.exe
PID 320 wrote to memory of 3452	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 3552	320	Au_.exe	SearchApp.exe
PID 320 wrote to memory of 3816	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 4164	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 1640	320	Au_.exe	backgroundTaskHost.exe
PID 320 wrote to memory of 776	320	Au_.exe	fontdrvhost.exe
PID 320 wrote to memory of 784	320	Au_.exe	fontdrvhost.exe
PID 320 wrote to memory of 1016	320	Au_.exe	dwm.exe
PID 320 wrote to memory of 2416	320	Au_.exe	sihost.exe
PID 320 wrote to memory of 2428	320	Au_.exe	svchost.exe
PID 320 wrote to memory of 2608	320	Au_.exe	taskhostw.exe
PID 320 wrote to memory of 2584	320	Au_.exe	Explorer.EXE
PID 320 wrote to memory of 2836	320	Au_.exe	svchost.exe
PID 320 wrote to memory of 3276	320	Au_.exe	DllHost.exe
PID 320 wrote to memory of 3384	320	Au_.exe	StartMenuExperienceHost.exe
PID 320 wrote to memory of 3452	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 3552	320	Au_.exe	SearchApp.exe
PID 320 wrote to memory of 3816	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 4164	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 1640	320	Au_.exe	backgroundTaskHost.exe
PID 320 wrote to memory of 776	320	Au_.exe	fontdrvhost.exe
PID 320 wrote to memory of 784	320	Au_.exe	fontdrvhost.exe
PID 320 wrote to memory of 1016	320	Au_.exe	dwm.exe
PID 320 wrote to memory of 2416	320	Au_.exe	sihost.exe
PID 320 wrote to memory of 2428	320	Au_.exe	svchost.exe
PID 320 wrote to memory of 2608	320	Au_.exe	taskhostw.exe
PID 320 wrote to memory of 2584	320	Au_.exe	Explorer.EXE
PID 320 wrote to memory of 2836	320	Au_.exe	svchost.exe
PID 320 wrote to memory of 3276	320	Au_.exe	DllHost.exe
PID 320 wrote to memory of 3384	320	Au_.exe	StartMenuExperienceHost.exe
PID 320 wrote to memory of 3452	320	Au_.exe	RuntimeBroker.exe
PID 320 wrote to memory of 3552	320	Au_.exe	SearchApp.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

Processes:

ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exeAu_.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Au_.exe

C:\Windows\system32\fontdrvhost.exe
"fontdrvhost.exe"
1⤵
PID:776

C:\Windows\system32\dwm.exe
"dwm.exe"
1⤵
PID:1016

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
1⤵
PID:1640

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:4164

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3816

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
1⤵
PID:3552

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3452

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
PID:3384

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:3276

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:2836

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2584

C:\Users\Admin\AppData\Local\Temp\ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe
"C:\Users\Admin\AppData\Local\Temp\ac9897327901b6e866e307b059e605ac856e105c55b7cd8db48511c66bfc5ae5.exe"
2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2640

C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
"C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
3⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Executes dropped EXE
- Loads dropped DLL
- Windows security modification
- Checks whether UAC is enabled
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:320

C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
1⤵
PID:2608

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2428

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2416

C:\Windows\system32\fontdrvhost.exe
"fontdrvhost.exe"
1⤵
PID:784

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3700

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
1⤵
PID:5056

C:\Windows\system32\BackgroundTransferHost.exe
"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1
1⤵
PID:1144

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
1⤵
PID:2800

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Modify Registry

5

Bypass User Account Control

T1088

Disabling Security Tools

3

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

T1012

Peripheral Device Discovery

T1120

Lateral Movement

Replication Through Removable Media