dcrat | fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4

Analysis

max time kernel
94s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 03:11

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General

Target

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Size

2.3MB
MD5

4e69fcf73418a08fcb8b3e7e2ecb43c4
SHA1

a3ecd09f65ca4e7821a0b7f8596edcd679573f5b
SHA256

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4
SHA512

a6d1a2b6363ad8a560567e6c11a48f8d1bc4cdfc36474902edf39f676440be82619aae52279121a776486d0edfe7a448f0fe9707b27ae760c1d6dd0201f6adc3
SSDEEP

49152:BwpUwcTZ0rUinysyVZl5LCCcG3RTXM34FIIPWYJxuQfUgtFneJ8BG5U:Bw1ctUyjTLC8puaX/neJ8BgU

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 9 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Default\\Recent\\taskhostw.exe\", \"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Default\\Recent\\taskhostw.exe\", \"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\", \"C:\\Users\\Admin\\NetHood\\RuntimeBroker.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Default\\Recent\\taskhostw.exe\", \"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\", \"C:\\Users\\Admin\\NetHood\\RuntimeBroker.exe\", \"C:\\Users\\Default User\\fontdrvhost.exe\", \"C:\\Recovery\\WindowsRE\\sysmon.exe\", \"C:\\Program Files\\Windows Media Player\\winlogon.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Default\\Recent\\taskhostw.exe\", \"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\", \"C:\\Users\\Admin\\NetHood\\RuntimeBroker.exe\", \"C:\\Users\\Default User\\fontdrvhost.exe\", \"C:\\Recovery\\WindowsRE\\sysmon.exe\", \"C:\\Program Files\\Windows Media Player\\winlogon.exe\", \"C:\\Program Files\\Windows Multimedia Platform\\System.exe\", \"C:\\Recovery\\WindowsRE\\SearchApp.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Default\\Recent\\taskhostw.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Default\\Recent\\taskhostw.exe\", \"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\", \"C:\\Users\\Admin\\NetHood\\RuntimeBroker.exe\", \"C:\\Users\\Default User\\fontdrvhost.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Default\\Recent\\taskhostw.exe\", \"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\", \"C:\\Users\\Admin\\NetHood\\RuntimeBroker.exe\", \"C:\\Users\\Default User\\fontdrvhost.exe\", \"C:\\Recovery\\WindowsRE\\sysmon.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Default\\Recent\\taskhostw.exe\", \"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\", \"C:\\Users\\Admin\\NetHood\\RuntimeBroker.exe\", \"C:\\Users\\Default User\\fontdrvhost.exe\", \"C:\\Recovery\\WindowsRE\\sysmon.exe\", \"C:\\Program Files\\Windows Media Player\\winlogon.exe\", \"C:\\Program Files\\Windows Multimedia Platform\\System.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Default\\Recent\\taskhostw.exe\", \"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\", \"C:\\Users\\Admin\\NetHood\\RuntimeBroker.exe\", \"C:\\Users\\Default User\\fontdrvhost.exe\", \"C:\\Recovery\\WindowsRE\\sysmon.exe\", \"C:\\Program Files\\Windows Media Player\\winlogon.exe\", \"C:\\Program Files\\Windows Multimedia Platform\\System.exe\", \"C:\\Recovery\\WindowsRE\\SearchApp.exe\", \"C:\\Program Files (x86)\\Windows Photo Viewer\\uk-UA\\RuntimeBroker.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe

Process spawned unexpected child process 27 IoCs

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

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exe

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4608	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3488	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1300	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2720	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5108	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2304	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3224	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3988	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5088	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3036	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5100	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3548	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1092	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4656	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4808	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	492	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2260	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4964	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3212	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3152	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1116	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2372	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3484	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2100	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2568	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3512	4648	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	208	4648	schtasks.exe	83

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

Processes:

resource	yara_rule
behavioral2/memory/4440-1-0x0000000000F80000-0x00000000011D2000-memory.dmp	dcrat
behavioral2/files/0x0007000000023c66-20.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe

Executes dropped EXE 1 IoCs

Processes:

System.exe

pid	Process
1884	System.exe

Adds Run key to start application 2 TTPs 18 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Users\\Admin\\NetHood\\RuntimeBroker.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Program Files\\Windows Media Player\\winlogon.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files (x86)\\Windows Photo Viewer\\uk-UA\\RuntimeBroker.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\Program Files\\Windows Multimedia Platform\\System.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\taskhostw = "\"C:\\Users\\Default\\Recent\\taskhostw.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\taskhostw = "\"C:\\Users\\Default\\Recent\\taskhostw.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Users\\Default User\\fontdrvhost.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Users\\Default User\\fontdrvhost.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sysmon = "\"C:\\Recovery\\WindowsRE\\sysmon.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\Program Files\\Windows Multimedia Platform\\System.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files (x86)\\Windows Photo Viewer\\uk-UA\\RuntimeBroker.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Users\\All Users\\Packages\\Microsoft.SkypeApp_kzf8qxf38zg5c\\fontdrvhost.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Users\\Admin\\NetHood\\RuntimeBroker.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sysmon = "\"C:\\Recovery\\WindowsRE\\sysmon.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Program Files\\Windows Media Player\\winlogon.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Recovery\\WindowsRE\\SearchApp.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Recovery\\WindowsRE\\SearchApp.exe\""	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe

Drops file in Program Files directory 7 IoCs

Processes:

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe

description	ioc	Process
File created	C:\Program Files\ModifiableWindowsApps\fontdrvhost.exe	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
File created	C:\Program Files\Windows Media Player\winlogon.exe	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
File created	C:\Program Files\Windows Media Player\cc11b995f2a76d	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
File created	C:\Program Files\Windows Multimedia Platform\System.exe	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
File created	C:\Program Files\Windows Multimedia Platform\27d1bcfc3c54e0	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
File created	C:\Program Files (x86)\Windows Photo Viewer\uk-UA\RuntimeBroker.exe	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
File created	C:\Program Files (x86)\Windows Photo Viewer\uk-UA\9e8d7a4ca61bd9	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.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

Processes:

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 27 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

pid	Process
2372	schtasks.exe
3484	schtasks.exe
2100	schtasks.exe
5088	schtasks.exe
3036	schtasks.exe
1116	schtasks.exe
208	schtasks.exe
1300	schtasks.exe
2304	schtasks.exe
3548	schtasks.exe
2568	schtasks.exe
1092	schtasks.exe
4964	schtasks.exe
3152	schtasks.exe
5100	schtasks.exe
3212	schtasks.exe
5108	schtasks.exe
3988	schtasks.exe
4656	schtasks.exe
2260	schtasks.exe
3512	schtasks.exe
3488	schtasks.exe
4808	schtasks.exe
492	schtasks.exe
4608	schtasks.exe
2720	schtasks.exe
3224	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exeSystem.exe

pid	Process
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
1884	System.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exeSystem.exe

description	pid	Process
Token: SeDebugPrivilege	4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
Token: SeDebugPrivilege	1884	System.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.execmd.exe

description	pid	Process	procid_target
PID 4440 wrote to memory of 1816	4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe	111
PID 4440 wrote to memory of 1816	4440	fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe	111
PID 1816 wrote to memory of 2864	1816	cmd.exe	113
PID 1816 wrote to memory of 2864	1816	cmd.exe	113
PID 1816 wrote to memory of 1884	1816	cmd.exe	117
PID 1816 wrote to memory of 1884	1816	cmd.exe	117

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\fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe
"C:\Users\Admin\AppData\Local\Temp\fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\NaP9XBU54Z.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1816
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2864
- - C:\Program Files\Windows Multimedia Platform\System.exe
    "C:\Program Files\Windows Multimedia Platform\System.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Recent\taskhostw.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4608

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Users\Default\Recent\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3488

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 7 /tr "'C:\Users\Default\Recent\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1300

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\Packages\Microsoft.SkypeApp_kzf8qxf38zg5c\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2720

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Users\All Users\Packages\Microsoft.SkypeApp_kzf8qxf38zg5c\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5108

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Packages\Microsoft.SkypeApp_kzf8qxf38zg5c\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2304

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Users\Admin\NetHood\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3224

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Admin\NetHood\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3988

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\NetHood\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5088

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3036

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Users\Default User\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5100

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3548

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\sysmon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1092

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sysmon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4656

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\sysmon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Media Player\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:492

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files\Windows Media Player\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2260

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Media Player\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4964

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Multimedia Platform\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3212

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files\Windows Multimedia Platform\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3152

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Multimedia Platform\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1116

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3484

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2100

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2568

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3512

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:208

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\sysmon.exe

Filesize
2.3MB

MD5
4e69fcf73418a08fcb8b3e7e2ecb43c4

SHA1
a3ecd09f65ca4e7821a0b7f8596edcd679573f5b

SHA256
fa78ac8f4c94923c7e53a3bf6936b46aff02f7746ee9518460c2d529ea2982d4

SHA512
a6d1a2b6363ad8a560567e6c11a48f8d1bc4cdfc36474902edf39f676440be82619aae52279121a776486d0edfe7a448f0fe9707b27ae760c1d6dd0201f6adc3

Download Submit
C:\Users\Admin\AppData\Local\Temp\NaP9XBU54Z.bat

Filesize
220B

MD5
8e52c56447f96b5173446932067de9c8

SHA1
38c5f3646d137b4f6833acd0c5fee15e2fbb7193

SHA256
2db18a6d5595d45eea325be63fe1a8de9a6945283fcc5963dd5e795affb98a76

SHA512
42133508d5bfea6d3f09997fde5a3d1b28a9ccd98a88e796cb74e354d0b9b8256a8a4a02f249715d2bd01b7cdca811433dda18231bdf982825aa723dff899568

Download Submit
memory/1884-42-0x0000000002970000-0x0000000002982000-memory.dmp

Filesize
72KB

Download
memory/1884-41-0x000000001B2E0000-0x000000001B336000-memory.dmp

Filesize
344KB

Download
memory/4440-4-0x000000001BEA0000-0x000000001BEF0000-memory.dmp

Filesize
320KB

Download
memory/4440-6-0x0000000003460000-0x00000000034B6000-memory.dmp

Filesize
344KB

Download
memory/4440-5-0x0000000003320000-0x0000000003336000-memory.dmp

Filesize
88KB

Download
memory/4440-7-0x0000000001AA0000-0x0000000001AB2000-memory.dmp

Filesize
72KB

Download
memory/4440-8-0x000000001CD40000-0x000000001D268000-memory.dmp

Filesize
5.2MB

Download
memory/4440-11-0x000000001BF10000-0x000000001BF18000-memory.dmp

Filesize
32KB

Download
memory/4440-10-0x00000000034B0000-0x00000000034B8000-memory.dmp

Filesize
32KB

Download
memory/4440-9-0x0000000003340000-0x000000000334E000-memory.dmp

Filesize
56KB

Download
memory/4440-0-0x00007FFC6E593000-0x00007FFC6E595000-memory.dmp

Filesize
8KB

Download
memory/4440-36-0x00007FFC6E590000-0x00007FFC6F051000-memory.dmp

Filesize
10.8MB

Download
memory/4440-3-0x0000000003300000-0x000000000331C000-memory.dmp

Filesize
112KB

Download
memory/4440-2-0x00007FFC6E590000-0x00007FFC6F051000-memory.dmp

Filesize
10.8MB

Download
memory/4440-1-0x0000000000F80000-0x00000000011D2000-memory.dmp

Filesize
2.3MB

Download