dcrat | 224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0

Resubmissions

13-01-2025 15:25

250113-st1kpawrdv 10

10-01-2025 12:54

250110-p5j6asxjdk 10

28-12-2024 02:09

241228-clcwnatnby 10

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-01-2025 15:25

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General

Target

224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0.exe
Size

1.1MB
MD5

c1ea7d9d2b92b29bb016dc0c82ce0136
SHA1

0490c1a2a2ab084cb03bbb494454380eb0a4063f
SHA256

224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0
SHA512

51e7c868dd506de81112d18004f2dff73b0ef7a1b7614e94977c9e389919451a3c4bdda2668358999d490ca650a340305674d7c89212a33e8d111a8064a7a116
SSDEEP

24576:U2G/nvxW3Ww0tLh6X9jiDf3b8goWoMSCUH0N:UbA30cQoSP

Score

10^/10

dcrat discovery infostealer rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

Process spawned unexpected child process 21 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	2744	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	524	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3576	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3560	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4928	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5076	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4064	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1800	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2956	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2012	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3312	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3428	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3212	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3060	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1552	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1620	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5044	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1584	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4904	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	764	4668	schtasks.exe	88
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2396	4668	schtasks.exe	88

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x0007000000023c65-10.dat	dcrat
behavioral1/memory/2500-12-0x0000000000D70000-0x0000000000E46000-memory.dmp	dcrat

Checks computer location settings 2 TTPs 3 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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	hyperserversvc.exe

Executes dropped EXE 2 IoCs

pid	Process
2500	hyperserversvc.exe
3964	OfficeClickToRun.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files\VideoLAN\VLC\locale\ca@valencia\LC_MESSAGES\conhost.exe	hyperserversvc.exe
File created	C:\Program Files\VideoLAN\VLC\locale\ca@valencia\LC_MESSAGES\088424020bedd6	hyperserversvc.exe
File created	C:\Program Files (x86)\Adobe\csrss.exe	hyperserversvc.exe
File created	C:\Program Files (x86)\Adobe\886983d96e3d3e	hyperserversvc.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\Registration\CRMLog\Idle.exe	hyperserversvc.exe
File created	C:\Windows\Registration\CRMLog\6ccacd8608530f	hyperserversvc.exe
File created	C:\Windows\L2Schemas\OfficeClickToRun.exe	hyperserversvc.exe
File opened for modification	C:\Windows\L2Schemas\OfficeClickToRun.exe	hyperserversvc.exe
File created	C:\Windows\L2Schemas\e6c9b481da804f	hyperserversvc.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 3 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	224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum 64-bit\{4EFE2452-168A-11D1-BC76-00C04FB9453B}\Default MidiOut Device	SearchFilterHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\System32\msxml3r.dll,-1 = "XML Document"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\oregres.dll,-121 = "Microsoft Word 97 - 2003 Template"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\system32\cabview.dll,-20 = "Cabinet File"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\System32\ieframe.dll,-12385 = "Favorites Bar"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\system32\unregmp2.exe,-9934 = "AVCHD Video"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	SearchFilterHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\system32\notepad.exe,-469 = "Text Document"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\system32\unregmp2.exe,-9933 = "MPEG-4 Audio"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.wvx	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32,@elscore.dll,-10 = "Microsoft Hangul Decomposition Transliteration"	SearchIndexer.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32,@elscore.dll,-7 = "Microsoft Devanagari to Latin Transliteration"	SearchIndexer.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32,@elscore.dll,-8 = "Microsoft Malayalam to Latin Transliteration"	SearchIndexer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{1E589E9D-8A8D-46D9-A2F9-E6D4F8161EE9} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 01000000000000005fe016accf65db01	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@windows.storage.dll,-34583 = "Saved Pictures"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\System32\ieframe.dll,-912 = "HTML Document"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.aif\OpenWithList	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32,@elscore.dll,-6 = "Microsoft Cyrillic to Latin Transliteration"	SearchIndexer.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\oregres.dll,-178 = "OpenDocument Presentation"	SearchProtocolHost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{C120DE80-FDE4-49F5-A713-E902EF062B8A} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 0100000000000000afd40eadcf65db01	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\oregres.dll,-140 = "Microsoft OneNote Section"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.wvx\OpenWithList	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32,@elscore.dll,-5 = "Microsoft Transliteration Engine"	SearchIndexer.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32,@elscore.dll,-4 = "Microsoft Simplified Chinese to Traditional Chinese Transliteration"	SearchIndexer.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum 64-bit\{E0F158E1-CB04-11D0-BD4E-00A0C911CE86}\Default DirectSound Device	SearchFilterHost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{33154C99-BF49-443D-A73C-303A23ABBE97} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 010000000000000056ee86accf65db01	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\system32\zipfldr.dll,-10195 = "Compressed (zipped) Folder"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\oregres.dll,-116 = "Microsoft Excel Template"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\System32\ieframe.dll,-24585 = "Cascading Style Sheet Document"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\oregres.dll,-126 = "Microsoft Word Macro-Enabled Template"	SearchProtocolHost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{AEB16279-B750-48F1-8586-97956060175A} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 0100000000000000507e14accf65db01	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@windows.storage.dll,-21824 = "Camera Roll"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\oregres.dll,-180 = "Microsoft PowerPoint 97-2003 Template"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\system32\wmphoto.dll,-500 = "Windows Media Photo"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\System32\ieframe.dll,-10046 = "Internet Shortcut"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	SearchFilterHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.html\OpenWithList	SearchProtocolHost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{01BE4CFB-129A-452B-A209-F9D40B3B84A5} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 01000000000000002329dfaccf65db01	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\oregres.dll,-127 = "OpenDocument Text"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32,@elscore.dll,-9 = "Microsoft Bengali to Latin Transliteration"	SearchIndexer.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@windows.storage.dll,-21825 = "3D Objects"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\oregres.dll,-102 = "Microsoft Excel Template"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.svg	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\System32\ieframe.dll,-914 = "SVG Document"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.aif	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\system32\unregmp2.exe,-9939 = "ADTS Audio"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\system32\unregmp2.exe,-9914 = "Windows Media Audio/Video file"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	SearchProtocolHost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{97E467B4-98C6-4F19-9588-161B7773D6F6} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 01000000000000003615ccaccf65db01	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\system32\unregmp2.exe,-9909 = "Windows Media Audio/Video file"	SearchProtocolHost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{F81B1B56-7613-4EE4-BC05-1FAB5DE5C07E} {886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99} 0xFFFF = 0100000000000000574b05adcf65db01	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.svg\OpenWithList	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\oregres.dll,-174 = "Microsoft PowerPoint Presentation"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mht	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\System32\ieframe.dll,-913 = "MHTML Document"	SearchProtocolHost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32,@elscore.dll,-3 = "Microsoft Traditional Chinese to Simplified Chinese Transliteration"	SearchIndexer.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@C:\Windows\System32\Windows.UI.Immersive.dll,-38304 = "Public Account Pictures"	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Multimedia	SearchFilterHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts	SearchProtocolHost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates	SearchFilterHost.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000_Classes\Local Settings	hyperserversvc.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000_Classes\Local Settings	224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 21 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
5076	schtasks.exe
3312	schtasks.exe
3060	schtasks.exe
1552	schtasks.exe
2744	schtasks.exe
3560	schtasks.exe
1800	schtasks.exe
2012	schtasks.exe
3428	schtasks.exe
3212	schtasks.exe
4904	schtasks.exe
4928	schtasks.exe
4064	schtasks.exe
1620	schtasks.exe
1584	schtasks.exe
764	schtasks.exe
2396	schtasks.exe
524	schtasks.exe
3576	schtasks.exe
2956	schtasks.exe
5044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2500	hyperserversvc.exe
2500	hyperserversvc.exe
2500	hyperserversvc.exe
2500	hyperserversvc.exe
2500	hyperserversvc.exe
2500	hyperserversvc.exe
2500	hyperserversvc.exe
3964	OfficeClickToRun.exe

Suspicious use of AdjustPrivilegeToken 28 IoCs

description	pid	Process
Token: SeDebugPrivilege	2500	hyperserversvc.exe
Token: SeDebugPrivilege	3964	OfficeClickToRun.exe
Token: 33	1020	SearchIndexer.exe
Token: SeIncBasePriorityPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe
Token: SeTakeOwnershipPrivilege	1020	SearchIndexer.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 1432	4988	224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0.exe	82
PID 4988 wrote to memory of 1432	4988	224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0.exe	82
PID 4988 wrote to memory of 1432	4988	224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0.exe	82
PID 1432 wrote to memory of 1904	1432	WScript.exe	85
PID 1432 wrote to memory of 1904	1432	WScript.exe	85
PID 1432 wrote to memory of 1904	1432	WScript.exe	85
PID 1904 wrote to memory of 2500	1904	cmd.exe	87
PID 1904 wrote to memory of 2500	1904	cmd.exe	87
PID 2500 wrote to memory of 4836	2500	hyperserversvc.exe	110
PID 2500 wrote to memory of 4836	2500	hyperserversvc.exe	110
PID 4836 wrote to memory of 3260	4836	cmd.exe	112
PID 4836 wrote to memory of 3260	4836	cmd.exe	112
PID 4836 wrote to memory of 3964	4836	cmd.exe	116
PID 4836 wrote to memory of 3964	4836	cmd.exe	116
PID 1020 wrote to memory of 2244	1020	SearchIndexer.exe	124
PID 1020 wrote to memory of 2244	1020	SearchIndexer.exe	124
PID 1020 wrote to memory of 4652	1020	SearchIndexer.exe	125
PID 1020 wrote to memory of 4652	1020	SearchIndexer.exe	125

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\224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0.exe
"C:\Users\Admin\AppData\Local\Temp\224c3666515e1602d6a4c8f6802d8ad2c597951e50cf4938e5ddc849702f1bd0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\crtnet\U4fZxuOVYXKrCZIgxMyzABwsANpU.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1432
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\crtnet\Bnw1HgIbKGac.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1904
  - - C:\crtnet\hyperserversvc.exe
      "C:\crtnet\hyperserversvc.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      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
      PID:2500
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\3Ol3V7wsjo.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4836
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:3260
      - C:\Windows\L2Schemas\OfficeClickToRun.exe
        
        "C:\Windows\L2Schemas\OfficeClickToRun.exe"
        6⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3964

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1436

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 9 /tr "'C:\Windows\L2Schemas\OfficeClickToRun.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2744

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Windows\L2Schemas\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:524

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 12 /tr "'C:\Windows\L2Schemas\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3576

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 7 /tr "'C:\Program Files\VideoLAN\VLC\locale\ca@valencia\LC_MESSAGES\conhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3560

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Program Files\VideoLAN\VLC\locale\ca@valencia\LC_MESSAGES\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4928

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 14 /tr "'C:\Program Files\VideoLAN\VLC\locale\ca@valencia\LC_MESSAGES\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5076

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 13 /tr "'C:\crtnet\unsecapp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4064

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\crtnet\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1800

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 7 /tr "'C:\crtnet\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2956

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2012

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3312

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3428

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Windows\Registration\CRMLog\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3212

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Windows\Registration\CRMLog\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3060

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Windows\Registration\CRMLog\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1552

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Adobe\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1620

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Adobe\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1584

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Local Settings\SearchApp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4904

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Users\Admin\Local Settings\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:764

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Local Settings\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2396

C:\Windows\system32\SearchIndexer.exe
C:\Windows\system32\SearchIndexer.exe /Embedding
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1020
- C:\Windows\system32\SearchProtocolHost.exe
  "C:\Windows\system32\SearchProtocolHost.exe" Global\UsGthrFltPipeMssGthrPipe1_ Global\UsGthrCtrlFltPipeMssGthrPipe1 1 -2147483646 "Software\Microsoft\Windows Search" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT; MS Search 4.0 Robot)" "C:\ProgramData\Microsoft\Search\Data\Temp\usgthrsvc" "DownLevelDaemon"
  2⤵
  - Modifies data under HKEY_USERS
  PID:2244
- C:\Windows\system32\SearchFilterHost.exe
  "C:\Windows\system32\SearchFilterHost.exe" 0 804 808 816 8192 812 784
  2⤵
  - Modifies data under HKEY_USERS
  PID:4652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\3Ol3V7wsjo.bat

Filesize
206B

MD5
37d5285ffd25411dbfce1c0383c649d8

SHA1
a62d7cd4916eb9fbe0d9bafb64368dcbd1286b22

SHA256
990eb4831c0c8a032242eb7f1a8c2398b63f6e0befa17ed91aa2c8f56d37ce73

SHA512
af06dd2793b8314336235edd189e8062d5aa87e4765dba4cbbc12ec5d66e55cb5b03e626470c7c1cafb99e05c0833eacc816730207c5da6ef6e5865f39c6bc78

Download Submit
C:\crtnet\Bnw1HgIbKGac.bat

Filesize
30B

MD5
ad864158aece2c49b735cb6ddb40c692

SHA1
42cff4692d777de8a6e5dc42a48b95a00a4f74d0

SHA256
d788ee93f4876edfdcc51052ee21680b067fee9071f2efa752608fe39af39c84

SHA512
df2ce6df2fc21d23d91f869729c1bb5fbde0079d015d1b44a2679861a30a18b373bcdffe6f399964577a2b8f566d5373958c82e0917aa838b2e3f5705dc8e034

Download Submit
C:\crtnet\U4fZxuOVYXKrCZIgxMyzABwsANpU.vbe

Filesize
195B

MD5
d1e9f1bc4219b36665be0abca3f62ad2

SHA1
9ebf784c32f63049b3e39681015ee78350e04ee2

SHA256
8736f9684770146460caaf01b7cc432b2dcf9faf5d398b27f9f58cd86d87e978

SHA512
aeda85a9a5548a6eb44eb92c9839aa98e3e9932d9d0deb6a4fa9ec603438c85b38c1ab295cd10035b54e65453dd19da685457c82241caa369551df0ec75b2787

Download Submit
C:\crtnet\hyperserversvc.exe

Filesize
828KB

MD5
915963963f2bfe83c2f1a3a50cf042ca

SHA1
5b7ccdc34d46ff3d25752ae9f73ae6649e9ef791

SHA256
28c32ebbf807cd3ed0a35ead7bef99665da102a85bdfe0f91cf7f92d167dfd40

SHA512
7509a3ba3258848851c5315eecb1105ec10018c1012c244531a6250bcab84196378bd1fa9374c92ee3fa66f96433ddd17929875f37d2b272a97389abb6aa39b4

Download Submit
memory/1020-37-0x00000253E4EC0000-0x00000253E4ED0000-memory.dmp

Filesize
64KB

Download
memory/1020-53-0x00000253E4FC0000-0x00000253E4FD0000-memory.dmp

Filesize
64KB

Download
memory/1020-69-0x00000253E94B0000-0x00000253E94B8000-memory.dmp

Filesize
32KB

Download
memory/2500-12-0x0000000000D70000-0x0000000000E46000-memory.dmp

Filesize
856KB

Download
memory/4652-99-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-95-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-78-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-77-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-76-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-75-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-79-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-103-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-102-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-101-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-74-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-100-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-98-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-97-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-96-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-73-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-94-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-93-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-92-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-91-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-90-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-89-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-88-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-87-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-86-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-85-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-84-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-83-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-82-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-81-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download
memory/4652-80-0x000001C104CC0000-0x000001C104CD0000-memory.dmp

Filesize
64KB

Download