dcrat | a1ddae9574bbeadd40b789fc8c7719b47c0d4bd8ed93abbd1d07f7e866ac40a6

Analysis

max time kernel
102s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:14

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General

Target

9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Size

1.1MB
MD5

9a3fe6a67de09aa96ba2e5be3280ea4c
SHA1

6e4ffce312e07e64e58d3711d22873956299792c
SHA256

ad954fbd7d3e5259656f1f933b0d0e0528fca132b9212fceafb203211267efbf
SHA512

fb3a712d3ac88c3510c8759a0ae3465fa376eda8875f80eef28231c3a0955fc49032200637a695cf7c3f0b7a3e05fa84fbaff3992d58148c5d016c0ecb8e983b
SSDEEP

12288:t6NE5eSwJu37+GXJpkaI7ShG54v4ahgVY3whNG8/LI6i4ejmtnbAouuFteLBdBN9:t6NReJXJIwvJgVQSoPEzKkLXa

Score

10^/10

dcrat infostealer persistence 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

Modifies WinLogon for persistence 2 TTPs 12 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\", \"C:\\d25f591a00514bc9ba8441\\dwm.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\", \"C:\\d25f591a00514bc9ba8441\\dwm.exe\", \"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\", \"C:\\d25f591a00514bc9ba8441\\dwm.exe\", \"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\", \"C:\\Users\\Admin\\Links\\sihost.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\", \"C:\\d25f591a00514bc9ba8441\\dwm.exe\", \"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\", \"C:\\Users\\Admin\\Links\\sihost.exe\", \"C:\\d25f591a00514bc9ba8441\\spoolsv.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\", \"C:\\d25f591a00514bc9ba8441\\dwm.exe\", \"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\", \"C:\\Users\\Admin\\Links\\sihost.exe\", \"C:\\d25f591a00514bc9ba8441\\spoolsv.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\en-US\\winlogon.exe\", \"C:\\Users\\Default User\\SearchApp.exe\", \"C:\\Program Files\\Windows Sidebar\\Gadgets\\spoolsv.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\", \"C:\\d25f591a00514bc9ba8441\\dwm.exe\", \"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\", \"C:\\Users\\Admin\\Links\\sihost.exe\", \"C:\\d25f591a00514bc9ba8441\\spoolsv.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\en-US\\winlogon.exe\", \"C:\\Users\\Default User\\SearchApp.exe\", \"C:\\Program Files\\Windows Sidebar\\Gadgets\\spoolsv.exe\", \"C:\\Users\\Default\\wininit.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\", \"C:\\d25f591a00514bc9ba8441\\dwm.exe\", \"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\", \"C:\\Users\\Admin\\Links\\sihost.exe\", \"C:\\d25f591a00514bc9ba8441\\spoolsv.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\en-US\\winlogon.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\", \"C:\\d25f591a00514bc9ba8441\\dwm.exe\", \"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\", \"C:\\Users\\Admin\\Links\\sihost.exe\", \"C:\\d25f591a00514bc9ba8441\\spoolsv.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\en-US\\winlogon.exe\", \"C:\\Users\\Default User\\SearchApp.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\All Users\\wininit.exe\", \"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\", \"C:\\d25f591a00514bc9ba8441\\dwm.exe\", \"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\", \"C:\\Users\\Admin\\Links\\sihost.exe\", \"C:\\d25f591a00514bc9ba8441\\spoolsv.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\en-US\\winlogon.exe\", \"C:\\Users\\Default User\\SearchApp.exe\", \"C:\\Program Files\\Windows Sidebar\\Gadgets\\spoolsv.exe\", \"C:\\Users\\Default\\wininit.exe\", \"C:\\Recovery\\WindowsRE\\winlogon.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe

Process spawned unexpected child process 36 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	1756	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3876	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3676	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3284	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1932	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2032	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2716	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	552	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2256	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5088	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4580	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4592	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4556	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4652	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4664	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4712	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4616	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4732	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4796	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4864	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1276	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1784	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4480	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4812	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1808	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2792	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4048	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	652	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2952	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5896	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1464	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4612	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4904	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4928	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4984	5708	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4860	5708	schtasks.exe	87

DCRat payload 5 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral32/memory/5480-1-0x00000000007A0000-0x00000000008CC000-memory.dmp	dcrat
behavioral32/files/0x000700000002427e-23.dat	dcrat
behavioral32/files/0x000800000002429e-123.dat	dcrat
behavioral32/files/0x0008000000024280-132.dat	dcrat
behavioral32/memory/5560-134-0x0000000000800000-0x000000000092C000-memory.dmp	dcrat

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	9a3fe6a67de09aa96ba2e5be3280ea4c.exe

Executes dropped EXE 1 IoCs

pid	Process
5560	spoolsv.exe

Adds Run key to start application 2 TTPs 24 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\spoolsv = "\"C:\\Program Files\\Windows Sidebar\\Gadgets\\spoolsv.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Recovery\\WindowsRE\\winlogon.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\Users\\All Users\\wininit.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\Users\\All Users\\wininit.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\d25f591a00514bc9ba8441\\dwm.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Program Files (x86)\\Windows NT\\Accessories\\en-US\\winlogon.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\d25f591a00514bc9ba8441\\dwm.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\spoolsv = "\"C:\\d25f591a00514bc9ba8441\\spoolsv.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\spoolsv = "\"C:\\d25f591a00514bc9ba8441\\spoolsv.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Program Files (x86)\\Windows NT\\Accessories\\en-US\\winlogon.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\Users\\Default\\wininit.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\Users\\Default\\wininit.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Recovery\\WindowsRE\\winlogon.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sihost = "\"C:\\Users\\Admin\\Links\\sihost.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Users\\Default User\\SearchApp.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\spoolsv = "\"C:\\Program Files\\Windows Sidebar\\Gadgets\\spoolsv.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Users\\All Users\\SoftwareDistribution\\dwm.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Program Files (x86)\\MSBuild\\Microsoft\\Windows Workflow Foundation\\v3.5\\dllhost.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\d25f591a00514bc9ba8441\\OfficeClickToRun.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sihost = "\"C:\\Users\\Admin\\Links\\sihost.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Users\\Default User\\SearchApp.exe\""	9a3fe6a67de09aa96ba2e5be3280ea4c.exe

Drops file in Program Files directory 13 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\5940a34987c991	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File opened for modification	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\dllhost.exe	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File opened for modification	C:\Program Files (x86)\Windows NT\Accessories\en-US\winlogon.exe	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\RCX943B.tmp	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\spoolsv.exe	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File created	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\dllhost.exe	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File created	C:\Program Files (x86)\Windows NT\Accessories\en-US\winlogon.exe	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File created	C:\Program Files (x86)\Windows NT\Accessories\en-US\cc11b995f2a76d	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\spoolsv.exe	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\f3b6ecef712a24	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File created	C:\Program Files\ModifiableWindowsApps\backgroundTaskHost.exe	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File opened for modification	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\RCX8540.tmp	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
File opened for modification	C:\Program Files (x86)\Windows NT\Accessories\en-US\RCX9032.tmp	9a3fe6a67de09aa96ba2e5be3280ea4c.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\ImmersiveControlPanel\fr-FR\csrss.exe	9a3fe6a67de09aa96ba2e5be3280ea4c.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000_Classes\Local Settings	9a3fe6a67de09aa96ba2e5be3280ea4c.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 36 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1784	schtasks.exe
4812	schtasks.exe
2952	schtasks.exe
4904	schtasks.exe
4480	schtasks.exe
4048	schtasks.exe
4652	schtasks.exe
1756	schtasks.exe
4616	schtasks.exe
4864	schtasks.exe
3284	schtasks.exe
2032	schtasks.exe
4592	schtasks.exe
4796	schtasks.exe
3876	schtasks.exe
1932	schtasks.exe
4556	schtasks.exe
1808	schtasks.exe
1464	schtasks.exe
3676	schtasks.exe
4928	schtasks.exe
4984	schtasks.exe
2792	schtasks.exe
2716	schtasks.exe
5088	schtasks.exe
4580	schtasks.exe
4712	schtasks.exe
4612	schtasks.exe
4664	schtasks.exe
5896	schtasks.exe
2256	schtasks.exe
652	schtasks.exe
4860	schtasks.exe
552	schtasks.exe
4732	schtasks.exe
1276	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5480	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
5480	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
5480	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
5480	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
5480	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
5560	spoolsv.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5480	9a3fe6a67de09aa96ba2e5be3280ea4c.exe
Token: SeDebugPrivilege	5560	spoolsv.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5480 wrote to memory of 5784	5480	9a3fe6a67de09aa96ba2e5be3280ea4c.exe	128
PID 5480 wrote to memory of 5784	5480	9a3fe6a67de09aa96ba2e5be3280ea4c.exe	128
PID 5784 wrote to memory of 224	5784	cmd.exe	130
PID 5784 wrote to memory of 224	5784	cmd.exe	130
PID 5784 wrote to memory of 5560	5784	cmd.exe	133
PID 5784 wrote to memory of 5560	5784	cmd.exe	133

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\9a3fe6a67de09aa96ba2e5be3280ea4c.exe
"C:\Users\Admin\AppData\Local\Temp\9a3fe6a67de09aa96ba2e5be3280ea4c.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- 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:5480
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\iZj2KDpLfv.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5784
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:224
- - C:\d25f591a00514bc9ba8441\spoolsv.exe
    "C:\d25f591a00514bc9ba8441\spoolsv.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5560

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 6 /tr "'C:\Users\All Users\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1756

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Users\All Users\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3876

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\Users\All Users\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3676

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\SoftwareDistribution\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3284

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\All Users\SoftwareDistribution\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1932

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\SoftwareDistribution\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2032

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2716

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:552

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2256

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\d25f591a00514bc9ba8441\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5088

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\d25f591a00514bc9ba8441\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4580

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\d25f591a00514bc9ba8441\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4592

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 9 /tr "'C:\d25f591a00514bc9ba8441\OfficeClickToRun.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4556

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\d25f591a00514bc9ba8441\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 14 /tr "'C:\d25f591a00514bc9ba8441\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4664

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 10 /tr "'C:\Users\Admin\Links\sihost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4712

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Users\Admin\Links\sihost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4616

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Links\sihost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4732

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 5 /tr "'C:\d25f591a00514bc9ba8441\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\d25f591a00514bc9ba8441\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4864

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\d25f591a00514bc9ba8441\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1276

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1784

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4480

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4812

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 11 /tr "'C:\Users\Default User\SearchApp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Users\Default User\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2792

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 9 /tr "'C:\Users\Default User\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4048

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Sidebar\Gadgets\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\Gadgets\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2952

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Sidebar\Gadgets\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5896

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Users\Default\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1464

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Users\Default\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4612

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 6 /tr "'C:\Users\Default\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4904

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4928

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4984

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Recovery\WindowsRE\winlogon.exe

Filesize
1.1MB

MD5
81359675cc0f49c83fc8aaf322f1a211

SHA1
a2bcd119a10e4e4e93637db07cf1fb4d99eeacd8

SHA256
af3af968a934232d930084a377c04541cd17d14338ae0862700e3ae0c6d9c91d

SHA512
c16eb428f8c22bdac21652e120a3bb926450fbf4617acbdfd3246e863940fb2b5548943570580c484976c8e621438ffb4b6c8b25dd4f673ebc4b31a8130af617

Download Submit
C:\Users\Admin\AppData\Local\Temp\iZj2KDpLfv.bat

Filesize
202B

MD5
2162d5db4ac79b97800129b70a46ff92

SHA1
c7b69e672efa410860803952d02cf248cc80be2b

SHA256
eb9fb581a05e924c41415c8d0abdbc0be05039c0e786cfb784474fb887b16313

SHA512
f086c498056ea55c0a227eec03a71e4a6638710096e5a93d1fee9b976b188456e8014a0f6bf9dc201da34185531a19b2eacae79791c47447574972dd53b42127

Download Submit
C:\d25f591a00514bc9ba8441\OfficeClickToRun.exe

Filesize
1.1MB

MD5
9a3fe6a67de09aa96ba2e5be3280ea4c

SHA1
6e4ffce312e07e64e58d3711d22873956299792c

SHA256
ad954fbd7d3e5259656f1f933b0d0e0528fca132b9212fceafb203211267efbf

SHA512
fb3a712d3ac88c3510c8759a0ae3465fa376eda8875f80eef28231c3a0955fc49032200637a695cf7c3f0b7a3e05fa84fbaff3992d58148c5d016c0ecb8e983b

Download Submit
C:\d25f591a00514bc9ba8441\spoolsv.exe

Filesize
1.1MB

MD5
0e582ef7ccd6100790485f3e1ecf86c6

SHA1
82912b1c14560beab27539046f50e805530bb5be

SHA256
ca367a9a89fad30d2ce309a0d8c1cb30d9a175d8330d543977a5ec0f2e330a11

SHA512
780c0ec9d1fa587743801468beab0d8c26a62dddc902b65748d8e6ef17a35f0d2e74ed9cccd7eaf14ecf15cd2c7073800239e8376a028612654f8feaa8c7b927

Download Submit
memory/5480-14-0x000000001B590000-0x000000001B59C000-memory.dmp

Filesize
48KB

Download
memory/5480-13-0x000000001B580000-0x000000001B58E000-memory.dmp

Filesize
56KB

Download
memory/5480-7-0x000000001B500000-0x000000001B512000-memory.dmp

Filesize
72KB

Download
memory/5480-6-0x000000001B4E0000-0x000000001B4F6000-memory.dmp

Filesize
88KB

Download
memory/5480-5-0x00000000029D0000-0x00000000029E0000-memory.dmp

Filesize
64KB

Download
memory/5480-3-0x000000001B4C0000-0x000000001B4DC000-memory.dmp

Filesize
112KB

Download
memory/5480-10-0x000000001B530000-0x000000001B542000-memory.dmp

Filesize
72KB

Download
memory/5480-11-0x000000001C2C0000-0x000000001C7E8000-memory.dmp

Filesize
5.2MB

Download
memory/5480-0-0x00007FF8570C3000-0x00007FF8570C5000-memory.dmp

Filesize
8KB

Download
memory/5480-9-0x000000001B520000-0x000000001B52C000-memory.dmp

Filesize
48KB

Download
memory/5480-12-0x000000001B570000-0x000000001B578000-memory.dmp

Filesize
32KB

Download
memory/5480-8-0x000000001B540000-0x000000001B550000-memory.dmp

Filesize
64KB

Download
memory/5480-122-0x00007FF8570C3000-0x00007FF8570C5000-memory.dmp

Filesize
8KB

Download
memory/5480-4-0x000000001BAB0000-0x000000001BB00000-memory.dmp

Filesize
320KB

Download
memory/5480-129-0x00007FF8570C0000-0x00007FF857B81000-memory.dmp

Filesize
10.8MB

Download
memory/5480-2-0x00007FF8570C0000-0x00007FF857B81000-memory.dmp

Filesize
10.8MB

Download
memory/5480-1-0x00000000007A0000-0x00000000008CC000-memory.dmp

Filesize
1.2MB

Download
memory/5560-134-0x0000000000800000-0x000000000092C000-memory.dmp

Filesize
1.2MB

Download
memory/5560-135-0x0000000002A90000-0x0000000002AA2000-memory.dmp

Filesize
72KB

Download
memory/5560-136-0x0000000002AB0000-0x0000000002AC2000-memory.dmp

Filesize
72KB

Download