dcrat | 063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\", \"C:\\Windows\\System32\\wlanmsm\\taskhost.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\", \"C:\\Windows\\System32\\wlanmsm\\taskhost.exe\", \"C:\\PerfLogs\\Admin\\explorer.exe\", \"C:\\Windows\\System32\\wbem\\wbemtest\\WmiPrvSE.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\", \"C:\\Windows\\System32\\wlanmsm\\taskhost.exe\", \"C:\\PerfLogs\\Admin\\explorer.exe\", \"C:\\Windows\\System32\\wbem\\wbemtest\\WmiPrvSE.exe\", \"C:\\Windows\\System32\\NlsLexicons001d\\smss.exe\", \"C:\\PerfLogs\\Admin\\services.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\", \"C:\\Windows\\System32\\wlanmsm\\taskhost.exe\", \"C:\\PerfLogs\\Admin\\explorer.exe\", \"C:\\Windows\\System32\\wbem\\wbemtest\\WmiPrvSE.exe\", \"C:\\Windows\\System32\\NlsLexicons001d\\smss.exe\", \"C:\\PerfLogs\\Admin\\services.exe\", \"C:\\Windows\\Performance\\WinSAT\\DataStore\\WmiPrvSE.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\", \"C:\\Windows\\System32\\wlanmsm\\taskhost.exe\", \"C:\\PerfLogs\\Admin\\explorer.exe\", \"C:\\Windows\\System32\\wbem\\wbemtest\\WmiPrvSE.exe\", \"C:\\Windows\\System32\\NlsLexicons001d\\smss.exe\", \"C:\\PerfLogs\\Admin\\services.exe\", \"C:\\Windows\\Performance\\WinSAT\\DataStore\\WmiPrvSE.exe\", \"C:\\Windows\\twain\\explorer.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\", \"C:\\Windows\\System32\\wlanmsm\\taskhost.exe\", \"C:\\PerfLogs\\Admin\\explorer.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\", \"C:\\Windows\\System32\\wlanmsm\\taskhost.exe\", \"C:\\PerfLogs\\Admin\\explorer.exe\", \"C:\\Windows\\System32\\wbem\\wbemtest\\WmiPrvSE.exe\", \"C:\\Windows\\System32\\NlsLexicons001d\\smss.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe

Process spawned unexpected child process 9 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	2760	2884	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2612	2884	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2640	2884	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2952	2884	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2044	2884	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1284	2884	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2236	2884	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2124	2884	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2692	2884	schtasks.exe	30

UAC bypass 3 TTPs 9 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"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	WmiPrvSE.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	WmiPrvSE.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	WmiPrvSE.exe

DCRat payload 6 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/1680-1-0x00000000002D0000-0x00000000003C4000-memory.dmp	dcrat
behavioral1/files/0x0006000000019401-22.dat	dcrat
behavioral1/files/0x00090000000173fb-43.dat	dcrat
behavioral1/files/0x0008000000017403-65.dat	dcrat
behavioral1/memory/2664-66-0x0000000001380000-0x0000000001474000-memory.dmp	dcrat
behavioral1/memory/1340-98-0x0000000000C80000-0x0000000000D74000-memory.dmp	dcrat

Executes dropped EXE 2 IoCs

pid	Process
2664	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
1340	WmiPrvSE.exe

Adds Run key to start application 2 TTPs 18 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\PerfLogs\\Admin\\explorer.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\PerfLogs\\Admin\\services.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Windows\\twain\\explorer.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\Windows\\System32\\NlsLexicons001d\\smss.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Windows\\Performance\\WinSAT\\DataStore\\WmiPrvSE.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\taskhost = "\"C:\\Windows\\System32\\wlanmsm\\taskhost.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\PerfLogs\\Admin\\explorer.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\taskhost = "\"C:\\Windows\\System32\\wlanmsm\\taskhost.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\PerfLogs\\Admin\\services.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Windows\\Performance\\WinSAT\\DataStore\\WmiPrvSE.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\System32\\FirewallAPI\\csrss.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\System.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Windows\\twain\\explorer.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Windows\\System32\\wbem\\wbemtest\\WmiPrvSE.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Windows\\System32\\wbem\\wbemtest\\WmiPrvSE.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\Windows\\System32\\NlsLexicons001d\\smss.exe\""	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe

Checks whether UAC is enabled 1 TTPs 6 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	WmiPrvSE.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	WmiPrvSE.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe

Drops file in System32 directory 16 IoCs

description	ioc	Process
File created	C:\Windows\System32\FirewallAPI\csrss.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\System32\FirewallAPI\csrss.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\System32\wbem\wbemtest\24dbde2999530ef5fd907494bc374d663924116c	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\System32\NlsLexicons001d\smss.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\System32\FirewallAPI\886983d96e3d3e31032c679b2d4ea91b6c05afef	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\System32\wlanmsm\taskhost.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\System32\wlanmsm\b75386f1303e64d8139363b71e44ac16341adf4e	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\System32\FirewallAPI\RCX987A.tmp	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\System32\wbem\wbemtest\WmiPrvSE.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\System32\NlsLexicons001d\smss.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\System32\NlsLexicons001d\69ddcba757bf72f7d36c464c71f42baab150b2b9	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\System32\FirewallAPI\RCX987B.tmp	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\System32\wlanmsm\RCX9CF1.tmp	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\System32\wlanmsm\RCX9CF2.tmp	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\System32\wlanmsm\taskhost.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\System32\wbem\wbemtest\WmiPrvSE.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File created	C:\Windows\twain\7a0fd90576e08807bde2cc57bcf9854bbce05fe3	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\Performance\WinSAT\DataStore\WmiPrvSE.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File opened for modification	C:\Windows\twain\explorer.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\Performance\WinSAT\DataStore\WmiPrvSE.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\Performance\WinSAT\DataStore\24dbde2999530ef5fd907494bc374d663924116c	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
File created	C:\Windows\twain\explorer.exe	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs

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

persistence execution

Scheduled Task

pid	Process
2760	schtasks.exe
2612	schtasks.exe
2952	schtasks.exe
2044	schtasks.exe
2124	schtasks.exe
2640	schtasks.exe
1284	schtasks.exe
2236	schtasks.exe
2692	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1680	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
2664	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
2664	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
2664	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Token: SeDebugPrivilege	2664	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Token: SeDebugPrivilege	1340	WmiPrvSE.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 1692	1680	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe	34
PID 1680 wrote to memory of 1692	1680	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe	34
PID 1680 wrote to memory of 1692	1680	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe	34
PID 1692 wrote to memory of 3056	1692	cmd.exe	36
PID 1692 wrote to memory of 3056	1692	cmd.exe	36
PID 1692 wrote to memory of 3056	1692	cmd.exe	36
PID 1692 wrote to memory of 2664	1692	cmd.exe	37
PID 1692 wrote to memory of 2664	1692	cmd.exe	37
PID 1692 wrote to memory of 2664	1692	cmd.exe	37
PID 2664 wrote to memory of 1036	2664	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe	44
PID 2664 wrote to memory of 1036	2664	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe	44
PID 2664 wrote to memory of 1036	2664	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe	44
PID 1036 wrote to memory of 3008	1036	cmd.exe	46
PID 1036 wrote to memory of 3008	1036	cmd.exe	46
PID 1036 wrote to memory of 3008	1036	cmd.exe	46
PID 1036 wrote to memory of 1340	1036	cmd.exe	48
PID 1036 wrote to memory of 1340	1036	cmd.exe	48
PID 1036 wrote to memory of 1340	1036	cmd.exe	48

System policy modification 1 TTPs 9 IoCs

defense_evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	WmiPrvSE.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	WmiPrvSE.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	WmiPrvSE.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\063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
"C:\Users\Admin\AppData\Local\Temp\063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe"
1⤵
- DcRat
- Modifies WinLogon for persistence
- UAC bypass
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1680
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\XZyoUzseb4.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:3056
- - C:\Users\Admin\AppData\Local\Temp\063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe
    "C:\Users\Admin\AppData\Local\Temp\063f0ebe162695ca595299a607634b1a4678527542053d73a85106d0de5f329f.exe"
    3⤵
    - Modifies WinLogon for persistence
    - UAC bypass
    - Executes dropped EXE
    - Adds Run key to start application
    - Checks whether UAC is enabled
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    - System policy modification
    PID:2664
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\DA0bDZCT7n.bat"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1036
    - - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        5⤵
        
        PID:3008
    - - C:\Windows\Performance\WinSAT\DataStore\WmiPrvSE.exe
        
        "C:\Windows\Performance\WinSAT\DataStore\WmiPrvSE.exe"
        5⤵
        UAC bypass
        Executes dropped EXE
        Checks whether UAC is enabled
        Suspicious use of AdjustPrivilegeToken
        System policy modification
        
        PID:1340

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\System32\FirewallAPI\csrss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\System.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2612

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Windows\System32\wlanmsm\taskhost.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\PerfLogs\Admin\explorer.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2952

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Windows\System32\wbem\wbemtest\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\System32\NlsLexicons001d\smss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1284

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\PerfLogs\Admin\services.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2236

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Windows\Performance\WinSAT\DataStore\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2124

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\twain\explorer.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2692

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

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry