dcrat | 19b45d7e3ede011ff54ba5dc54705a38f030bfc70afc6dec3a5931f3f8d01a75

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	Chainhostcrt.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	services.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	services.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	services.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Chainhostcrt.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Chainhostcrt.exe

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x0007000000023c57-10.dat	dcrat
behavioral1/memory/3432-13-0x00000000000E0000-0x0000000000250000-memory.dmp	dcrat

Disables Task Manager via registry modification
defense_evasion

Checks computer location settings 2 TTPs 3 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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	iiu21398e8ydsa.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	Chainhostcrt.exe

Executes dropped EXE 2 IoCs

pid	Process
3432	Chainhostcrt.exe
1388	services.exe

Checks whether UAC is enabled 1 TTPs 4 IoCs

defense_evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	services.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	services.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Chainhostcrt.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Chainhostcrt.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\devmgmt.msc	mmc.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jre-1.8\bin\c5b4cb5e9653cc	Chainhostcrt.exe
File created	C:\Program Files\Java\jre-1.8\bin\services.exe	Chainhostcrt.exe

Drops file in Windows directory 59 IoCs

description	ioc	Process
File created	C:\Windows\INF\c_diskdrive.PNF	mmc.exe
File created	C:\Windows\INF\c_linedisplay.PNF	mmc.exe
File created	C:\Windows\INF\c_extension.PNF	mmc.exe
File created	C:\Windows\INF\c_fscompression.PNF	mmc.exe
File created	C:\Windows\INF\c_smrdisk.PNF	mmc.exe
File created	C:\Windows\INF\c_smrvolume.PNF	mmc.exe
File created	C:\Windows\INF\c_fsinfrastructure.PNF	mmc.exe
File created	C:\Windows\INF\c_media.PNF	mmc.exe
File created	C:\Windows\INF\c_fscontinuousbackup.PNF	mmc.exe
File created	C:\Windows\INF\c_computeaccelerator.PNF	mmc.exe
File created	C:\Windows\INF\c_mcx.PNF	mmc.exe
File created	C:\Windows\INF\c_fscopyprotection.PNF	mmc.exe
File created	C:\Windows\INF\c_fshsm.PNF	mmc.exe
File created	C:\Windows\INF\remoteposdrv.PNF	mmc.exe
File created	C:\Windows\INF\digitalmediadevice.PNF	mmc.exe
File created	C:\Windows\INF\c_sslaccel.PNF	mmc.exe
File created	C:\Windows\INF\c_fscfsmetadataserver.PNF	mmc.exe
File created	C:\Windows\INF\c_magneticstripereader.PNF	mmc.exe
File created	C:\Windows\INF\c_fssystemrecovery.PNF	mmc.exe
File created	C:\Windows\INF\oposdrv.PNF	mmc.exe
File created	C:\Windows\INF\c_volume.PNF	mmc.exe
File created	C:\Windows\INF\c_netdriver.PNF	mmc.exe
File created	C:\Windows\INF\c_ucm.PNF	mmc.exe
File created	C:\Windows\INF\rdcameradriver.PNF	mmc.exe
File created	C:\Windows\INF\c_camera.PNF	mmc.exe
File created	C:\Windows\INF\c_display.PNF	mmc.exe
File created	C:\Windows\INF\c_monitor.PNF	mmc.exe
File created	C:\Windows\INF\c_barcodescanner.PNF	mmc.exe
File created	C:\Windows\INF\rawsilo.PNF	mmc.exe
File created	C:\Windows\INF\xusb22.PNF	mmc.exe
File created	C:\Windows\ShellComponents\wininit.exe	Chainhostcrt.exe
File created	C:\Windows\ShellComponents\56085415360792	Chainhostcrt.exe
File created	C:\Windows\INF\c_fscontentscreener.PNF	mmc.exe
File created	C:\Windows\INF\c_holographic.PNF	mmc.exe
File created	C:\Windows\INF\c_fsopenfilebackup.PNF	mmc.exe
File created	C:\Windows\INF\c_fsphysicalquotamgmt.PNF	mmc.exe
File created	C:\Windows\INF\wsdprint.PNF	mmc.exe
File created	C:\Windows\INF\c_fssecurityenhancer.PNF	mmc.exe
File created	C:\Windows\INF\c_fsvirtualization.PNF	mmc.exe
File created	C:\Windows\INF\c_swcomponent.PNF	mmc.exe
File created	C:\Windows\INF\c_cashdrawer.PNF	mmc.exe
File created	C:\Windows\INF\c_fsquotamgmt.PNF	mmc.exe
File created	C:\Windows\INF\ts_generic.PNF	mmc.exe
File created	C:\Windows\INF\c_fsantivirus.PNF	mmc.exe
File created	C:\Windows\INF\c_processor.PNF	mmc.exe
File created	C:\Windows\INF\c_scmdisk.PNF	mmc.exe
File created	C:\Windows\INF\c_apo.PNF	mmc.exe
File created	C:\Windows\INF\c_fsundelete.PNF	mmc.exe
File created	C:\Windows\INF\miradisp.PNF	mmc.exe
File created	C:\Windows\INF\c_firmware.PNF	mmc.exe
File created	C:\Windows\INF\dc1-controller.PNF	mmc.exe
File created	C:\Windows\INF\c_fsactivitymonitor.PNF	mmc.exe
File created	C:\Windows\INF\c_receiptprinter.PNF	mmc.exe
File created	C:\Windows\INF\c_fsreplication.PNF	mmc.exe
File created	C:\Windows\INF\c_fssystem.PNF	mmc.exe
File created	C:\Windows\INF\c_fsencryption.PNF	mmc.exe
File created	C:\Windows\INF\c_scmvolume.PNF	mmc.exe
File created	C:\Windows\INF\c_proximity.PNF	mmc.exe
File created	C:\Windows\INF\PerceptionSimulationSixDof.PNF	mmc.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
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 5 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	iiu21398e8ydsa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.exe

Checks SCSI registry key(s) 3 TTPs 20 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\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Phantom	mmc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\ConfigFlags	mmc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\FriendlyName	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\Properties\{cf73bb51-3abf-44a2-85e0-9a3dc7a12132}\0006	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\000A	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{cf73bb51-3abf-44a2-85e0-9a3dc7a12132}\0006	mmc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Phantom	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000	mmc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{cf73bb51-3abf-44a2-85e0-9a3dc7a12132}\0006	mmc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\000A	mmc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\000A\	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_MSFT&PROD_VIRTUAL_DVD-ROM\2&1F4ADFFE&0&000001	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_MSFT&PROD_VIRTUAL_DVD-ROM\2&1F4ADFFE&0&000002	mmc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\ConfigFlags	mmc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\FriendlyName	mmc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{cf73bb51-3abf-44a2-85e0-9a3dc7a12132}\0006	mmc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\000A\	mmc.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	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	msedge.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000_Classes\Local Settings	iiu21398e8ydsa.exe
Key created	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000_Classes\Local Settings	Chainhostcrt.exe
Key created	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000_Classes\Local Settings	control.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

pid	Process
4716	reg.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 24 IoCs

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

persistence execution

Scheduled Task

pid	Process
2448	schtasks.exe
4468	schtasks.exe
3688	schtasks.exe
4980	schtasks.exe
4336	schtasks.exe
4936	schtasks.exe
2352	schtasks.exe
1040	schtasks.exe
652	schtasks.exe
772	schtasks.exe
1184	schtasks.exe
4932	schtasks.exe
1912	schtasks.exe
2384	schtasks.exe
4364	schtasks.exe
2000	schtasks.exe
4552	schtasks.exe
1496	schtasks.exe
860	schtasks.exe
3132	schtasks.exe
2108	schtasks.exe
2828	schtasks.exe
2536	schtasks.exe
3896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3432	Chainhostcrt.exe
3432	Chainhostcrt.exe
3432	Chainhostcrt.exe
3432	Chainhostcrt.exe
3432	Chainhostcrt.exe
1388	services.exe
1884	msedge.exe
1884	msedge.exe
3268	msedge.exe
3268	msedge.exe
3540	msedge.exe
3540	msedge.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2968	mmc.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs

pid	Process
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3432	Chainhostcrt.exe
Token: SeDebugPrivilege	1388	services.exe
Token: SeShutdownPrivilege	3876	control.exe
Token: SeCreatePagefilePrivilege	3876	control.exe
Token: 33	2968	mmc.exe
Token: SeIncBasePriorityPrivilege	2968	mmc.exe
Token: 33	2968	mmc.exe
Token: SeIncBasePriorityPrivilege	2968	mmc.exe

Suspicious use of FindShellTrayWindow 26 IoCs

pid	Process
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe
3540	msedge.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2968	mmc.exe
2968	mmc.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1844 wrote to memory of 4308	1844	iiu21398e8ydsa.exe	85
PID 1844 wrote to memory of 4308	1844	iiu21398e8ydsa.exe	85
PID 1844 wrote to memory of 4308	1844	iiu21398e8ydsa.exe	85
PID 4308 wrote to memory of 3424	4308	WScript.exe	87
PID 4308 wrote to memory of 3424	4308	WScript.exe	87
PID 4308 wrote to memory of 3424	4308	WScript.exe	87
PID 3424 wrote to memory of 3432	3424	cmd.exe	89
PID 3424 wrote to memory of 3432	3424	cmd.exe	89
PID 3432 wrote to memory of 400	3432	Chainhostcrt.exe	115
PID 3432 wrote to memory of 400	3432	Chainhostcrt.exe	115
PID 3424 wrote to memory of 4716	3424	cmd.exe	117
PID 3424 wrote to memory of 4716	3424	cmd.exe	117
PID 3424 wrote to memory of 4716	3424	cmd.exe	117
PID 400 wrote to memory of 4408	400	cmd.exe	118
PID 400 wrote to memory of 4408	400	cmd.exe	118
PID 400 wrote to memory of 1388	400	cmd.exe	119
PID 400 wrote to memory of 1388	400	cmd.exe	119
PID 4512 wrote to memory of 4716	4512	msedge.exe	131
PID 4512 wrote to memory of 4716	4512	msedge.exe	131
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1560	4512	msedge.exe	132
PID 4512 wrote to memory of 1884	4512	msedge.exe	133
PID 4512 wrote to memory of 1884	4512	msedge.exe	133
PID 4512 wrote to memory of 4828	4512	msedge.exe	134
PID 4512 wrote to memory of 4828	4512	msedge.exe	134
PID 4512 wrote to memory of 4828	4512	msedge.exe	134

System policy modification 1 TTPs 6 IoCs

defense_evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	services.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	services.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	services.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Chainhostcrt.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Chainhostcrt.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	Chainhostcrt.exe

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:\Users\Admin\AppData\Local\Temp\iiu21398e8ydsa.exe
"C:\Users\Admin\AppData\Local\Temp\iiu21398e8ydsa.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1844
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\ChainblockWinRuntimenet\i5qxHYu1uyqqnmGIFh.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4308
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\ChainblockWinRuntimenet\oyqWCLFHNhsk.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3424
  - - C:\ChainblockWinRuntimenet\Chainhostcrt.exe
      "C:\ChainblockWinRuntimenet\Chainhostcrt.exe"
      4⤵
      UAC bypass
      Checks computer location settings
      Executes dropped EXE
      Checks whether UAC is enabled
      Drops file in Program Files directory
      Drops file in Windows directory
      Modifies registry class
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:3432
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\2EHgxdaT4D.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:400
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:4408
      - C:\Program Files\Java\jre-1.8\bin\services.exe
        
        "C:\Program Files\Java\jre-1.8\bin\services.exe"
        6⤵
        UAC bypass
        Executes dropped EXE
        Checks whether UAC is enabled
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        System policy modification
        
        PID:1388
  - - C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
      4⤵
      System Location Discovery: System Language Discovery
      Modifies registry key
      PID:4716

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1912

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2448

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4468

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3688

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2384

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1496

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\Program Files\Java\jre-1.8\bin\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:772

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files\Java\jre-1.8\bin\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:860

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 7 /tr "'C:\Program Files\Java\jre-1.8\bin\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1184

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\Windows\ShellComponents\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3132

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\ShellComponents\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2108

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Windows\ShellComponents\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4336

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4932

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4936

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\ChainblockWinRuntimenet\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4364

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\ChainblockWinRuntimenet\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2828

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\ChainblockWinRuntimenet\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2536

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\ChainblockWinRuntimenet\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2352

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\ChainblockWinRuntimenet\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2000

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\ChainblockWinRuntimenet\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1040

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 7 /tr "'C:\Users\Default\Music\backgroundTaskHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4552

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Users\Default\Music\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 12 /tr "'C:\Users\Default\Music\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3896

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /0
1⤵
PID:1480

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --default-search-provider=? --out-pipe-name=MSEdgeDefaulta86b181eh9071h43e7ha6c7h500257a04204
1⤵
- Suspicious use of WriteProcessMemory
PID:4512
- 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:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x120,0x124,0x128,0xfc,0x12c,0x7ffe08bb46f8,0x7ffe08bb4708,0x7ffe08bb4718
  2⤵
  PID:4716
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2052,8249073959172842445,14307758019496823875,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2092 /prefetch:2
  2⤵
  PID:1560
- 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 --field-trial-handle=2052,8249073959172842445,14307758019496823875,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2164 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1884
- 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 --field-trial-handle=2052,8249073959172842445,14307758019496823875,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2740 /prefetch:8
  2⤵
  PID:4828

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:5060

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:364

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory=Default
1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3540
- 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:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffe08bb46f8,0x7ffe08bb4708,0x7ffe08bb4718
  2⤵
  PID:2224
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2164 /prefetch:2
  2⤵
  PID:1980
- 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 --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2220 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3268
- 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 --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2780 /prefetch:8
  2⤵
  PID:1224
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3360 /prefetch:1
  2⤵
  PID:4456
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3376 /prefetch:1
  2⤵
  PID:5040
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5032 /prefetch:1
  2⤵
  PID:952
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5072 /prefetch:1
  2⤵
  PID:4508
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3648 /prefetch:1
  2⤵
  PID:1560
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3436 /prefetch:1
  2⤵
  PID:2652
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,11737606510622681222,10717017255570865582,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5352 /prefetch:1
  2⤵
  PID:1564

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1912

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4328

C:\Windows\system32\control.exe
"C:\Windows\system32\control.exe" /name Microsoft.DeviceManager
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
PID:3876
- C:\Windows\system32\mmc.exe
  "C:\Windows\system32\mmc.exe" C:\Windows\system32\devmgmt.msc
  2⤵
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Checks SCSI registry key(s)
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2968

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
- System Location Discovery: System Language Discovery
PID:4472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

Credential Access

Discovery

Browser Information Discovery

T1217

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery