dcrat | 9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\", \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\tier2punctuations\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\ApplicationFrame\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\", \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\tier2punctuations\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\ApplicationFrame\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\AppVStreamingUX\\fontdrvhost.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\", \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\tier2punctuations\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\ApplicationFrame\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\AppVStreamingUX\\fontdrvhost.exe\", \"C:\\Windows\\System32\\tcblaunch\\SppExtComObj.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\", \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\tier2punctuations\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\ApplicationFrame\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\AppVStreamingUX\\fontdrvhost.exe\", \"C:\\Windows\\System32\\tcblaunch\\SppExtComObj.exe\", \"C:\\Program Files (x86)\\WindowsPowerShell\\Modules\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\", \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\tier2punctuations\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\ApplicationFrame\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\AppVStreamingUX\\fontdrvhost.exe\", \"C:\\Windows\\System32\\tcblaunch\\SppExtComObj.exe\", \"C:\\Program Files (x86)\\WindowsPowerShell\\Modules\\RuntimeBroker.exe\", \"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.ProxyStub\\SearchApp.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\", \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\", \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\RuntimeBroker.exe\", \"C:\\Windows\\System32\\tier2punctuations\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe

Process spawned unexpected child process 8 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3860	1968	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3744	1968	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	684	1968	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3596	1968	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2364	1968	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4504	1968	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	620	1968	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1936	1968	schtasks.exe	82

UAC bypass 3 TTPs 6 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	RuntimeBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	RuntimeBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RuntimeBroker.exe

DCRat payload 4 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/916-1-0x0000000000650000-0x0000000000744000-memory.dmp	dcrat
behavioral2/files/0x0008000000023bb7-20.dat	dcrat
behavioral2/files/0x000d000000023bfb-65.dat	dcrat
behavioral2/files/0x0009000000023bfc-76.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe

Executes dropped EXE 1 IoCs

pid	Process
1056	RuntimeBroker.exe

Adds Run key to start application 2 TTPs 16 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Windows\\System32\\tier2punctuations\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Windows\\System32\\ApplicationFrame\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Windows\\System32\\tcblaunch\\SppExtComObj.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Windows\\System32\\tier2punctuations\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Windows\\System32\\ApplicationFrame\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Windows\\System32\\AppVStreamingUX\\fontdrvhost.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files (x86)\\WindowsPowerShell\\Modules\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files (x86)\\WindowsPowerShell\\Modules\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.ProxyStub\\SearchApp.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.CppWinrt\\SearchApp.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\RuntimeBroker.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Windows\\System32\\AppVStreamingUX\\fontdrvhost.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Windows\\System32\\tcblaunch\\SppExtComObj.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi.ProxyStub\\SearchApp.exe\""	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe

Checks whether UAC is enabled 1 TTPs 4 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RuntimeBroker.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RuntimeBroker.exe

Drops file in System32 directory 20 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\tier2punctuations\RCXA222.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\ApplicationFrame\RuntimeBroker.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\AppVStreamingUX\RCXA727.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\AppVStreamingUX\RCXA738.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\AppVStreamingUX\fontdrvhost.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\System32\tier2punctuations\9e8d7a4ca61bd92aff00cc37a7a4d62a2cac998d	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\System32\ApplicationFrame\9e8d7a4ca61bd92aff00cc37a7a4d62a2cac998d	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\System32\ApplicationFrame\RuntimeBroker.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\ApplicationFrame\RCXA4A4.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\System32\tcblaunch\e1ef82546f0b02b7e974f28047f3788b1128cce1	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\tier2punctuations\RCXA2A0.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\tcblaunch\RCXA93C.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\System32\tier2punctuations\RuntimeBroker.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\System32\AppVStreamingUX\5b884080fd4f94e2695da25c503f9e33b9605b83	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\tier2punctuations\RuntimeBroker.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\ApplicationFrame\RCXA522.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\tcblaunch\RCXA93D.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\System32\tcblaunch\SppExtComObj.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\System32\AppVStreamingUX\fontdrvhost.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\System32\tcblaunch\SppExtComObj.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe

Drops file in Program Files directory 10 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\logs\RuntimeBroker.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Program Files (x86)\WindowsPowerShell\Modules\RCXABC0.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Program Files (x86)\Mozilla Maintenance Service\logs\RuntimeBroker.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\logs\RCXA01D.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Program Files (x86)\WindowsPowerShell\Modules\9e8d7a4ca61bd92aff00cc37a7a4d62a2cac998d	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\logs\RCXA01C.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Program Files (x86)\WindowsPowerShell\Modules\RCXABBF.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Program Files (x86)\WindowsPowerShell\Modules\RuntimeBroker.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Program Files (x86)\Mozilla Maintenance Service\logs\9e8d7a4ca61bd92aff00cc37a7a4d62a2cac998d	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Program Files (x86)\WindowsPowerShell\Modules\RuntimeBroker.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe

Drops file in Windows directory 10 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.ProxyStub\RCXADE5.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.CppWinrt\SearchApp.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.CppWinrt\38384e6a620884a6b69bcc56f80d556f9200171c	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.ProxyStub\38384e6a620884a6b69bcc56f80d556f9200171c	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.CppWinrt\RCX9E17.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.CppWinrt\RCX9E18.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.ProxyStub\RCXADD4.tmp	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File opened for modification	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.ProxyStub\SearchApp.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.CppWinrt\SearchApp.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
File created	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.ProxyStub\SearchApp.exe	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 8 IoCs

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

persistence execution

Scheduled Task

pid	Process
3744	schtasks.exe
684	schtasks.exe
3596	schtasks.exe
2364	schtasks.exe
4504	schtasks.exe
620	schtasks.exe
1936	schtasks.exe
3860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
916	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	916	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Token: SeDebugPrivilege	1056	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 916 wrote to memory of 2316	916	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe	91
PID 916 wrote to memory of 2316	916	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe	91
PID 2316 wrote to memory of 628	2316	cmd.exe	93
PID 2316 wrote to memory of 628	2316	cmd.exe	93
PID 2316 wrote to memory of 1056	2316	cmd.exe	94
PID 2316 wrote to memory of 1056	2316	cmd.exe	94

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"	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RuntimeBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	RuntimeBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	RuntimeBroker.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\9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe
"C:\Users\Admin\AppData\Local\Temp\9d6543c22a9d71de6a5a08d0189944fd98da698e917662fac24f98f2e08e2325.exe"
1⤵
- Modifies WinLogon for persistence
- UAC bypass
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- 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:916
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\LUotzgml9v.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2316
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:628
- - C:\Program Files (x86)\Mozilla Maintenance Service\logs\RuntimeBroker.exe
    "C:\Program Files (x86)\Mozilla Maintenance Service\logs\RuntimeBroker.exe"
    3⤵
    - UAC bypass
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - Suspicious use of AdjustPrivilegeToken
    - System policy modification
    PID:1056

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.CppWinrt\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3860

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3744

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\tier2punctuations\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:684

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\ApplicationFrame\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3596

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\AppVStreamingUX\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2364

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\System32\tcblaunch\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4504

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:620

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.ProxyStub\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses