dcrat | b73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
26/04/2026, 14:34

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General

Target
xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Size 2.0MB
Sample260426-rxea7agw3x
SHA256 b73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911
MD5 083b72c83b66464a9c88e7e6a1b2e95e
SHA1 c0b835680fa4924eb8f62b232a2faf9e9ca11bfc
SHA512 d5ad7038b088f531bd265534a3c03ac4e0060b5770300c087f23d84a6d9f9c106add9c52494c1a0039d36bd678c4eab1b500b0f081f8b6a53f122eed20684651
SSDEEP 49152:+kQTAyYS/v6h3+1uhZcT2NnvOyLXXjFpNXCym/hXmL9W6EppQpV:+ay5CbhZcT2lvnDFpFW/twU7+V
TLSH
T173A5337470C1C1B2E5A6103584CACB32A636B062877EC1CB7ADD76F56F603F1627A6C6
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution dcrat infostealer persistence rat trojan

Malware Config

Signatures

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

Modifies WinLogon for persistence 2 TTPs 5 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Defender\\ja-JP\\csrss.exe\", \"C:\\Recovery\\WindowsRE\\dwm.exe\", \"C:\\Windows\\es-ES\\Registry.exe\", \"C:\\Program Files\\Windows Media Player\\it-IT\\explorer.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Defender\\ja-JP\\csrss.exe\", \"C:\\Recovery\\WindowsRE\\dwm.exe\", \"C:\\Windows\\es-ES\\Registry.exe\", \"C:\\Program Files\\Windows Media Player\\it-IT\\explorer.exe\", \"C:\\Users\\Admin\\winlogon.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Defender\\ja-JP\\csrss.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Defender\\ja-JP\\csrss.exe\", \"C:\\Recovery\\WindowsRE\\dwm.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Windows Defender\\ja-JP\\csrss.exe\", \"C:\\Recovery\\WindowsRE\\dwm.exe\", \"C:\\Windows\\es-ES\\Registry.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe

Process spawned unexpected child process 15 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	988	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3056	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2796	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2120	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4052	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5112	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3336	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2308	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4108	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3560	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	636	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3872	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1256	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4264	2856	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4412	2856	schtasks.exe	84

UAC bypass 3 TTPs 3 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2800	powershell.exe
2220	powershell.exe
1132	powershell.exe
5112	powershell.exe
1492	powershell.exe
2932	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe

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-1-5-21-2714754311-527593155-1440850301-1000\Control Panel\International\Geo\Nation	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe

Executes dropped EXE 4 IoCs

pid	Process
1272	Registry.exe
3848	explorer.exe
4860	winlogon.exe
2364	csrss.exe

Adds Run key to start application 2 TTPs 10 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2714754311-527593155-1440850301-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files (x86)\\Windows Defender\\ja-JP\\csrss.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files (x86)\\Windows Defender\\ja-JP\\csrss.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Recovery\\WindowsRE\\dwm.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2714754311-527593155-1440850301-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Registry = "\"C:\\Windows\\es-ES\\Registry.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Registry = "\"C:\\Windows\\es-ES\\Registry.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Program Files\\Windows Media Player\\it-IT\\explorer.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2714754311-527593155-1440850301-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Recovery\\WindowsRE\\dwm.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2714754311-527593155-1440850301-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Program Files\\Windows Media Player\\it-IT\\explorer.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2714754311-527593155-1440850301-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Users\\Admin\\winlogon.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Users\\Admin\\winlogon.exe\""	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe

SmartAssembly .NET packer 7 IoCs

Detects SmartAssembly .NET packer.

resource	yara_rule
behavioral1/memory/4632-5235-0x0000000006430000-0x0000000006440000-memory.dmp	SmartAssembly
behavioral1/memory/4632-5242-0x0000000006950000-0x000000000695A000-memory.dmp	SmartAssembly
behavioral1/memory/4632-5249-0x0000000008160000-0x000000000816C000-memory.dmp	SmartAssembly
behavioral1/memory/4632-5250-0x0000000008180000-0x000000000818C000-memory.dmp	SmartAssembly
behavioral1/memory/4632-5252-0x00000000081B0000-0x00000000081BC000-memory.dmp	SmartAssembly
behavioral1/memory/4632-5254-0x0000000008570000-0x000000000857A000-memory.dmp	SmartAssembly
behavioral1/memory/4632-5258-0x00000000085C0000-0x00000000085CA000-memory.dmp	SmartAssembly

Drops file in Program Files directory 10 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File opened for modification	C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File opened for modification	C:\Program Files (x86)\Windows Defender\ja-JP\RCXD936.tmp	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File created	C:\Program Files (x86)\Windows Defender\ja-JP\886983d96e3d3e	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File created	C:\Program Files\Windows Media Player\it-IT\explorer.exe	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File created	C:\Program Files\Windows Media Player\it-IT\7a0fd90576e088	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File opened for modification	C:\Program Files (x86)\Windows Defender\ja-JP\RCXD947.tmp	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File opened for modification	C:\Program Files\Windows Media Player\it-IT\RCXE2E1.tmp	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File opened for modification	C:\Program Files\Windows Media Player\it-IT\RCXE2E2.tmp	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File opened for modification	C:\Program Files\Windows Media Player\it-IT\explorer.exe	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\es-ES\Registry.exe	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File created	C:\Windows\es-ES\ee2ad38f3d4382	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File opened for modification	C:\Windows\es-ES\RCXDF07.tmp	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File opened for modification	C:\Windows\es-ES\RCXDF17.tmp	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
File opened for modification	C:\Windows\es-ES\Registry.exe	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.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 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	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Registry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 15 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2796	schtasks.exe
2120	schtasks.exe
1256	schtasks.exe
4264	schtasks.exe
988	schtasks.exe
5112	schtasks.exe
3560	schtasks.exe
3872	schtasks.exe
3056	schtasks.exe
4052	schtasks.exe
636	schtasks.exe
4412	schtasks.exe
3336	schtasks.exe
2308	schtasks.exe
4108	schtasks.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Token: SeDebugPrivilege	1272	Registry.exe
Token: SeDebugPrivilege	4860	winlogon.exe
Token: SeDebugPrivilege	3848	explorer.exe
Token: SeDebugPrivilege	2364	csrss.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4632 wrote to memory of 2932	4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe	115
PID 4632 wrote to memory of 1492	4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe	116
PID 4632 wrote to memory of 5112	4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe	117
PID 4632 wrote to memory of 1132	4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe	118
PID 4632 wrote to memory of 2220	4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe	119
PID 4632 wrote to memory of 2800	4632	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe	120

System policy modification 1 TTPs 3 IoCs

defense_evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.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\xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe
"C:\Users\Admin\AppData\Local\Temp\xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe"
1⤵
- Modifies WinLogon for persistence
- UAC bypass
- Drops file in Drivers directory
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4632
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\xb73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  PID:2932
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  PID:1492
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\dwm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  PID:5112
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\es-ES\Registry.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  PID:1132
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Windows Media Player\it-IT\explorer.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  PID:2220
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\winlogon.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  PID:2800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\TJHXkWh8sx.bat"
  2⤵
  PID:6196
- - C:\Windows\SysWOW64\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:3236
  - - C:\Windows\system32\w32tm.exe
      w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
      4⤵
      PID:6776
- - C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe
    "C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe"
    3⤵
    PID:6796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:988

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3056

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2120

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4052

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5112

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 14 /tr "'C:\Windows\es-ES\Registry.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3336

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Windows\es-ES\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2308

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 14 /tr "'C:\Windows\es-ES\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4108

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Media Player\it-IT\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3560

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\Windows Media Player\it-IT\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:636

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Media Player\it-IT\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3872

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1256

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\Admin\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4264

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4412

C:\Windows\es-ES\Registry.exe
"C:\Windows\es-ES\Registry.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1272

C:\Program Files\Windows Media Player\it-IT\explorer.exe
"C:\Program Files\Windows Media Player\it-IT\explorer.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3848

C:\Users\Admin\winlogon.exe
"C:\Users\Admin\winlogon.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4860

C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe
"C:\Program Files (x86)\Windows Defender\ja-JP\csrss.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2364

C:\Recovery\WindowsRE\dwm.exe
"C:\Recovery\WindowsRE\dwm.exe"
1⤵
PID:4304

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

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Downloads

TJHXkWh8sx.bat

Path C:\Users\Admin\AppData\Local\Temp\TJHXkWh8sx.bat
Size 220B
SHA256 5e83caff65b0a00312883f0efe26211b88f223f9d5315a08e27d60784c9c3772
MD5 35177188d24fe67801c8d2c6e9faaa8b
SHA1 27c8fa27bb09e3aefe092ac228a41cee15efc909
SHA512 be03bf834ca38b2caaf65d5b32add23a5fbe77f8f8687ef190ffea987c8d1edcfed5c3096d66f3d6c0990f323949dabcc0abfc386799e10fc41b7ad9896edf74
TLSH
T1AED02301D816C74519135C835A5D158D70571C7973C55570138544AD29C7477726E1C1
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_1jt5t4s1.ql0.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1jt5t4s1.ql0.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

winlogon.exe

Path C:\Users\Admin\winlogon.exe
Size 2.0MB
SHA256 b73366d948f29f1c051a62a6a1d1f8acfb0426188a890955e12b23683c4e0911
MD5 083b72c83b66464a9c88e7e6a1b2e95e
SHA1 c0b835680fa4924eb8f62b232a2faf9e9ca11bfc
SHA512 d5ad7038b088f531bd265534a3c03ac4e0060b5770300c087f23d84a6d9f9c106add9c52494c1a0039d36bd678c4eab1b500b0f081f8b6a53f122eed20684651
SSDEEP 49152:+kQTAyYS/v6h3+1uhZcT2NnvOyLXXjFpNXCym/hXmL9W6EppQpV:+ay5CbhZcT2lvnDFpFW/twU7+V
TLSH
T173A5337470C1C1B2E5A6103584CACB32A636B062877EC1CB7ADD76F56F603F1627A6C6
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1132-31761-0x0000000007670000-0x00000000076A2000-memory.dmp

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memory/1132-8834-0x0000000002F40000-0x0000000002F76000-memory.dmp

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memory/1132-31859-0x0000000007970000-0x0000000007A13000-memory.dmp

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memory/1132-31827-0x0000000007950000-0x000000000796E000-memory.dmp

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memory/1132-31762-0x0000000071020000-0x000000007106C000-memory.dmp

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memory/1492-31958-0x0000000071020000-0x000000007106C000-memory.dmp

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memory/2800-31802-0x0000000071020000-0x000000007106C000-memory.dmp

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memory/2800-32576-0x0000000007390000-0x00000000073AA000-memory.dmp

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memory/2800-32575-0x00000000079D0000-0x000000000804A000-memory.dmp

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memory/2800-30121-0x0000000005F90000-0x0000000005FDC000-memory.dmp

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memory/2800-30010-0x0000000005ED0000-0x0000000005EEE000-memory.dmp

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memory/2800-8835-0x0000000005130000-0x0000000005758000-memory.dmp

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memory/2800-15955-0x0000000005A50000-0x0000000005DA4000-memory.dmp

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memory/2932-32395-0x0000000071020000-0x000000007106C000-memory.dmp

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memory/2932-15340-0x00000000056A0000-0x0000000005706000-memory.dmp

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memory/2932-15339-0x0000000005500000-0x0000000005522000-memory.dmp

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memory/4632-48-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-6-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-126-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-122-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-120-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-118-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-116-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-114-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-112-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-110-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-108-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-106-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-100-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-98-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-96-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-94-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-92-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-90-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-88-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-87-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-82-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-80-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-78-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-76-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-74-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-72-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-68-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-66-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-64-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-62-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-60-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-58-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-52-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-46-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-44-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-40-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-38-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-36-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-34-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-32-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-50-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-130-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-42-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-30-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-28-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-24-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-22-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-18-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-16-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-12-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-10-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-128-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-26-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-20-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-14-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-1714-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/4632-1997-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/4632-2302-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/4632-5231-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/4632-5232-0x0000000002A10000-0x0000000002A2C000-memory.dmp

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memory/4632-5233-0x0000000002A40000-0x0000000002A90000-memory.dmp

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memory/4632-5235-0x0000000006430000-0x0000000006440000-memory.dmp

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memory/4632-5234-0x0000000002AA0000-0x0000000002AA8000-memory.dmp

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memory/4632-5236-0x0000000006550000-0x0000000006566000-memory.dmp

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memory/4632-5237-0x00000000068D0000-0x00000000068D8000-memory.dmp

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memory/4632-5238-0x0000000006A20000-0x0000000006A32000-memory.dmp

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memory/4632-5239-0x00000000068E0000-0x00000000068E8000-memory.dmp

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memory/4632-5240-0x0000000006960000-0x0000000006970000-memory.dmp

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memory/4632-5241-0x0000000006B40000-0x0000000006BD2000-memory.dmp

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memory/4632-5242-0x0000000006950000-0x000000000695A000-memory.dmp

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memory/4632-5243-0x0000000006970000-0x0000000006978000-memory.dmp

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memory/4632-5244-0x0000000006990000-0x000000000699C000-memory.dmp

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memory/4632-5245-0x00000000069C0000-0x00000000069C8000-memory.dmp

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memory/4632-5247-0x00000000069D0000-0x00000000069E2000-memory.dmp

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memory/4632-5248-0x0000000007BE0000-0x000000000810C000-memory.dmp

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memory/4632-5249-0x0000000008160000-0x000000000816C000-memory.dmp

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memory/4632-5250-0x0000000008180000-0x000000000818C000-memory.dmp

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memory/4632-5251-0x0000000008190000-0x000000000819C000-memory.dmp

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memory/4632-5252-0x00000000081B0000-0x00000000081BC000-memory.dmp

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memory/4632-5253-0x0000000008460000-0x0000000008468000-memory.dmp

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memory/4632-5255-0x0000000008580000-0x000000000858E000-memory.dmp

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memory/4632-5254-0x0000000008570000-0x000000000857A000-memory.dmp

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memory/4632-5257-0x00000000085B0000-0x00000000085B8000-memory.dmp

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memory/4632-5256-0x00000000085A0000-0x00000000085A8000-memory.dmp

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memory/4632-5260-0x00000000085D0000-0x00000000085DC000-memory.dmp

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memory/4632-5259-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/4632-5258-0x00000000085C0000-0x00000000085CA000-memory.dmp

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memory/4632-124-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-104-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-102-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-84-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-70-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-5263-0x0000000008600000-0x0000000008666000-memory.dmp

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memory/4632-9196-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/4632-0-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/4632-56-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-54-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-8-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-5-0x0000000005210000-0x00000000054C1000-memory.dmp

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memory/4632-4-0x0000000005210000-0x00000000054C6000-memory.dmp

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memory/4632-3-0x0000000005790000-0x0000000005D34000-memory.dmp

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memory/4632-2-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/4632-1-0x00000000054D0000-0x0000000005788000-memory.dmp

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memory/5112-31871-0x0000000071020000-0x000000007106C000-memory.dmp

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