sality | 9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5

Windows Service

T1543.003

Processes:

system.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	system.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	system.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

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

UAC bypass 3 TTPs 2 IoCs

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

Processes:

system.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

Windows security bypass 2 TTPs 12 IoCs

Disable or Modify Tools

Modify Registry

Processes:

system.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	system.exe

Blocklisted process makes network request 1 IoCs

Processes:

Rundll32.exe

flow pid process

9 4640 Rundll32.exe
Stops running service(s) 3 TTPs
evasion

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

flow	pid	process
9	4640	Rundll32.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

Rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	Rundll32.exe

Executes dropped EXE 2 IoCs

Processes:

system.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

pid process

4752 system.exe
3536 9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Loads dropped DLL 3 IoCs

Processes:

Rundll32.exeRundll32.exe

pid process

4736 Rundll32.exe
4640 Rundll32.exe
4640 Rundll32.exe

pid	process
4736	Rundll32.exe
4640	Rundll32.exe
4640	Rundll32.exe

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4752-10-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-12-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-15-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-17-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-29-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-40-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-48-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-53-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-50-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-54-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-55-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-56-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-60-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4752-66-0x0000000002190000-0x000000000324A000-memory.dmp	upx
behavioral2/memory/4416-93-0x0000000002E50000-0x0000000003F0A000-memory.dmp	upx
behavioral2/memory/4416-95-0x0000000002E50000-0x0000000003F0A000-memory.dmp	upx
behavioral2/memory/4416-96-0x0000000002E50000-0x0000000003F0A000-memory.dmp	upx
behavioral2/memory/4416-97-0x0000000002E50000-0x0000000003F0A000-memory.dmp	upx
behavioral2/memory/4416-180-0x0000000002E50000-0x0000000003F0A000-memory.dmp	upx

Windows security modification 2 TTPs 14 IoCs

Disable or Modify Tools

Modify Registry

Processes:

system.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\Svc	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	system.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\Svc	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

Processes:

Rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Windows\\system32\\system.exe"	Rundll32.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

Processes:

system.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

Enumerates connected drives 3 TTPs 5 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exeRundll32.exe

description	ioc	process
File opened (read-only)	\??\H:	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
File opened (read-only)	\??\D:	Rundll32.exe
File opened (read-only)	\??\F:	Rundll32.exe
File opened (read-only)	\??\E:	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
File opened (read-only)	\??\G:	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description ioc process

File opened for modification \??\PhysicalDrive0 9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

Drops file in System32 directory 3 IoCs

Processes:

9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exesystem.exe

description	ioc	process
File created	C:\Windows\SysWOW64\system.exe	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
File created	C:\Windows\SysWOW64\nuvcrgaa.dll	system.exe
File created	C:\Windows\SysWOW64\wtbhrgaa.dll	system.exe

Drops file in Program Files directory 2 IoCs

Processes:

Rundll32.exe

description	ioc	process
File opened for modification	C:\Program Files\KAV\CDriver.sys	Rundll32.exe
File opened for modification	C:\Program Files\KAV\CDriver.Inf	Rundll32.exe

Drops file in Windows directory 3 IoCs

Processes:

system.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description	ioc	process
File created	C:\Windows\e580990	system.exe
File opened for modification	C:\Windows\SYSTEM.INI	system.exe
File created	C:\Windows\e58369b	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exe

pid process

4836 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4836	sc.exe

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

Rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000	Rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\DeviceDesc	Rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	Rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\DeviceDesc	Rundll32.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

system.exeRundll32.exeRundll32.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

pid	process
4752	system.exe
4752	system.exe
4736	Rundll32.exe
4736	Rundll32.exe
4736	Rundll32.exe
4736	Rundll32.exe
4736	Rundll32.exe
4736	Rundll32.exe
4736	Rundll32.exe
4736	Rundll32.exe
4736	Rundll32.exe
4736	Rundll32.exe
4640	Rundll32.exe
4640	Rundll32.exe
4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

pid process

4416 9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

pid	process
4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

system.exe

description	pid	process
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe
Token: SeDebugPrivilege	4752	system.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exesystem.exeRundll32.exenet.exenet.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description	pid	process	target process
PID 4416 wrote to memory of 4752	4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	system.exe
PID 4416 wrote to memory of 4752	4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	system.exe
PID 4416 wrote to memory of 4752	4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	system.exe
PID 4752 wrote to memory of 4736	4752	system.exe	Rundll32.exe
PID 4752 wrote to memory of 4736	4752	system.exe	Rundll32.exe
PID 4752 wrote to memory of 4736	4752	system.exe	Rundll32.exe
PID 4736 wrote to memory of 2912	4736	Rundll32.exe	net.exe
PID 4736 wrote to memory of 2912	4736	Rundll32.exe	net.exe
PID 4736 wrote to memory of 2912	4736	Rundll32.exe	net.exe
PID 4736 wrote to memory of 1536	4736	Rundll32.exe	net.exe
PID 4736 wrote to memory of 1536	4736	Rundll32.exe	net.exe
PID 4736 wrote to memory of 1536	4736	Rundll32.exe	net.exe
PID 4752 wrote to memory of 796	4752	system.exe	fontdrvhost.exe
PID 4752 wrote to memory of 792	4752	system.exe	fontdrvhost.exe
PID 4752 wrote to memory of 388	4752	system.exe	dwm.exe
PID 4752 wrote to memory of 2432	4752	system.exe	sihost.exe
PID 4752 wrote to memory of 2444	4752	system.exe	svchost.exe
PID 4752 wrote to memory of 2536	4752	system.exe	taskhostw.exe
PID 4752 wrote to memory of 3268	4752	system.exe	Explorer.EXE
PID 4752 wrote to memory of 3580	4752	system.exe	svchost.exe
PID 4752 wrote to memory of 3772	4752	system.exe	DllHost.exe
PID 4752 wrote to memory of 3892	4752	system.exe	StartMenuExperienceHost.exe
PID 4752 wrote to memory of 3972	4752	system.exe	RuntimeBroker.exe
PID 4752 wrote to memory of 4088	4752	system.exe	SearchApp.exe
PID 4752 wrote to memory of 4192	4752	system.exe	RuntimeBroker.exe
PID 4752 wrote to memory of 4812	4752	system.exe	RuntimeBroker.exe
PID 4752 wrote to memory of 4580	4752	system.exe	TextInputHost.exe
PID 4752 wrote to memory of 5052	4752	system.exe	msedge.exe
PID 4752 wrote to memory of 3984	4752	system.exe	msedge.exe
PID 4752 wrote to memory of 2472	4752	system.exe	msedge.exe
PID 4752 wrote to memory of 4824	4752	system.exe	msedge.exe
PID 4752 wrote to memory of 3880	4752	system.exe	msedge.exe
PID 4752 wrote to memory of 4112	4752	system.exe	msedge.exe
PID 4752 wrote to memory of 4844	4752	system.exe	msedge.exe
PID 4752 wrote to memory of 4416	4752	system.exe	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
PID 4752 wrote to memory of 4416	4752	system.exe	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
PID 4752 wrote to memory of 4736	4752	system.exe	Rundll32.exe
PID 4752 wrote to memory of 4736	4752	system.exe	Rundll32.exe
PID 4752 wrote to memory of 2912	4752	system.exe	net.exe
PID 4752 wrote to memory of 2912	4752	system.exe	net.exe
PID 1536 wrote to memory of 4396	1536	net.exe	net1.exe
PID 1536 wrote to memory of 4396	1536	net.exe	net1.exe
PID 1536 wrote to memory of 4396	1536	net.exe	net1.exe
PID 2912 wrote to memory of 4276	2912	net.exe	net1.exe
PID 2912 wrote to memory of 4276	2912	net.exe	net1.exe
PID 2912 wrote to memory of 4276	2912	net.exe	net1.exe
PID 4752 wrote to memory of 1536	4752	system.exe	net.exe
PID 4752 wrote to memory of 1536	4752	system.exe	net.exe
PID 4752 wrote to memory of 1396	4752	system.exe	sihclient.exe
PID 4752 wrote to memory of 4136	4752	system.exe	Conhost.exe
PID 4736 wrote to memory of 4836	4736	Rundll32.exe	sc.exe
PID 4736 wrote to memory of 4836	4736	Rundll32.exe	sc.exe
PID 4736 wrote to memory of 4836	4736	Rundll32.exe	sc.exe
PID 4752 wrote to memory of 4640	4752	system.exe	Rundll32.exe
PID 4752 wrote to memory of 4640	4752	system.exe	Rundll32.exe
PID 4752 wrote to memory of 4640	4752	system.exe	Rundll32.exe
PID 4416 wrote to memory of 3536	4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
PID 4416 wrote to memory of 3536	4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
PID 4416 wrote to memory of 3536	4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
PID 3536 wrote to memory of 3348	3536	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	msedge.exe
PID 3536 wrote to memory of 3348	3536	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	msedge.exe
PID 4416 wrote to memory of 796	4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	fontdrvhost.exe
PID 4416 wrote to memory of 792	4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	fontdrvhost.exe
PID 4416 wrote to memory of 388	4416	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe	dwm.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

Processes:

system.exe9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	system.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe

C:\Windows\system32\fontdrvhost.exe
"fontdrvhost.exe"
1⤵
PID:796

C:\Windows\system32\fontdrvhost.exe
"fontdrvhost.exe"
1⤵
PID:792

C:\Windows\system32\dwm.exe
"dwm.exe"
1⤵
PID:388

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2432

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2444

C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
1⤵
PID:2536

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3268

C:\Users\Admin\AppData\Local\Temp\9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
"C:\Users\Admin\AppData\Local\Temp\9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe"
2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4416

C:\Windows\SysWOW64\system.exe
C:\Windows\system32\system.exe
3⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4752

C:\Windows\SysWOW64\Rundll32.exe
Rundll32 C:\Windows\system32\nuvcrgaa.dll Exucute
4⤵
- Checks computer location settings
- Loads dropped DLL
- Drops file in Program Files directory
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4736

C:\Windows\SysWOW64\net.exe
net stop WinDefend
5⤵
- Suspicious use of WriteProcessMemory
PID:2912

C:\Windows\System32\Conhost.exe
\??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
6⤵
PID:4136

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop WinDefend
6⤵
PID:4276

C:\Windows\SysWOW64\net.exe
net stop MpsSvc
5⤵
- Suspicious use of WriteProcessMemory
PID:1536

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop MpsSvc
6⤵
PID:4396

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" stop PolicyAgent
5⤵
- Launches sc.exe
PID:4836

C:\Windows\SysWOW64\Rundll32.exe
Rundll32 C:\Windows\system32\wtbhrgaa.dll Exucute
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
PID:4640

C:\Users\Admin\AppData\Local\Temp\9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
C:\Users\Admin\AppData\Local\Temp\9dff5488ebde401913d3fadf77a904719a97e8538990e9653a1f1a012d4ab9a5.exe
3⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:3536

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://baoku.360.cn/
4⤵
PID:3348

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:3580

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:3772

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
PID:3892

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3972

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
1⤵
PID:4088

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:4192

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:4812

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca
1⤵
PID:4580

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window
1⤵
PID:5052

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=122.0.6261.70 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=122.0.2365.52 --initial-client-data=0x238,0x23c,0x240,0x234,0x2ac,0x7ff9d0222e98,0x7ff9d0222ea4,0x7ff9d0222eb0
2⤵
PID:3984

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=2244 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:2
2⤵
PID:2472

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=2292 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:3
2⤵
PID:4824

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=2468 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
2⤵
PID:3880

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --instant-process --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=11 --mojo-platform-channel-handle=5204 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:1
2⤵
PID:4112

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=12 --mojo-platform-channel-handle=5416 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:1
2⤵
PID:4844

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=17 --mojo-platform-channel-handle=2052 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:1
2⤵
PID:2668

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=18 --mojo-platform-channel-handle=2144 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:1
2⤵
PID:4200

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=5744 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
2⤵
PID:2348

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --disable-gpu-compositing --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=20 --mojo-platform-channel-handle=5876 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:1
2⤵
PID:552

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --disable-gpu-compositing --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=21 --mojo-platform-channel-handle=5396 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:1
2⤵
PID:4572

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=4620 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
2⤵
PID:2520

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_search_indexer.mojom.SearchIndexerInterfaceBroker --lang=en-US --service-sandbox-type=search_indexer --message-loop-type-ui --no-appcompat-clear --mojo-platform-channel-handle=6124 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
2⤵
PID:4556

C:\Windows\System32\sihclient.exe
C:\Windows\System32\sihclient.exe /cv CS5xfzsoDUSBZ/cngqUv2A.0.2
1⤵
PID:1396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery