dcrat | 98585e8fc301ec5becd9b995466c38981ac37102f917d52fba059261c4ae1647

Analysis

max time kernel
98s
max time network
99s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
19-01-2025 14:28

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General

Target

NURSULTAN.exe
Size

2.1MB
MD5

fd2d8d7d53e2bdd90497bb9b83d7f909
SHA1

df1750dd2309196a3595f6bc6c99386e562276c0
SHA256

98585e8fc301ec5becd9b995466c38981ac37102f917d52fba059261c4ae1647
SHA512

fbe80cc5f0c3c6d914cc02c27c99f993719399da04302397c6254d623437a2580b82694a33c597d5a761f6d47996ed30bd468da44607e792e7542955b6378160
SSDEEP

49152:lmqBYFzxwN2mF2mDY+FYFO954TOAghwA3fwQmJnc2+WAIZs0:cG2zxQD1mwAW/PFmpchWFB

Score

10^/10

dcrat discovery execution 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 6 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:\\Recovery\\WindowsRE\\RuntimeBroker.exe\", \"C:\\Program Files\\Uninstall Information\\SearchApp.exe\", \"C:\\Windows\\apppatch\\fr-FR\\csrss.exe\", \"C:\\Users\\Default\\OfficeClickToRun.exe\", \"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\", \"C:\\Users\\Admin\\AppData\\Roaming\\YihSFVKFwn.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\", \"C:\\Program Files\\Uninstall Information\\SearchApp.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\", \"C:\\Program Files\\Uninstall Information\\SearchApp.exe\", \"C:\\Windows\\apppatch\\fr-FR\\csrss.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\", \"C:\\Program Files\\Uninstall Information\\SearchApp.exe\", \"C:\\Windows\\apppatch\\fr-FR\\csrss.exe\", \"C:\\Users\\Default\\OfficeClickToRun.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\", \"C:\\Program Files\\Uninstall Information\\SearchApp.exe\", \"C:\\Windows\\apppatch\\fr-FR\\csrss.exe\", \"C:\\Users\\Default\\OfficeClickToRun.exe\", \"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\""	YihSFVKFwn.exe

Process spawned unexpected child process 18 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	4800	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2336	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3424	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4804	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4420	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1016	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2024	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3148	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4368	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	760	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3296	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1280	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3000	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3548	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3888	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3960	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	464	3476	schtasks.exe	94
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4848	3476	schtasks.exe	94

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
4560	powershell.exe
1916	powershell.exe
1768	powershell.exe
3080	powershell.exe
444	powershell.exe
4544	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2503671516-4119152987-701077851-1000\Control Panel\International\Geo\Nation	NURSULTAN.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\Control Panel\International\Geo\Nation	YihSFVKFwn.exe

Executes dropped EXE 3 IoCs

pid	Process
3352	fYZNm3i7Xv.exe
4640	YihSFVKFwn.exe
2396	YihSFVKFwn.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-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\Users\\Default\\OfficeClickToRun.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YihSFVKFwn = "\"C:\\Users\\Admin\\AppData\\Roaming\\YihSFVKFwn.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Program Files\\Uninstall Information\\SearchApp.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Program Files\\Uninstall Information\\SearchApp.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\apppatch\\fr-FR\\csrss.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\apppatch\\fr-FR\\csrss.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\Users\\Default\\OfficeClickToRun.exe\""	YihSFVKFwn.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YihSFVKFwn = "\"C:\\Users\\Admin\\AppData\\Roaming\\YihSFVKFwn.exe\""	YihSFVKFwn.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\Windows\System32\CSC4423BE21A09749CD8CCED3C76E3B03B.TMP	csc.exe
File created	\??\c:\Windows\System32\k0cigd.exe	csc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4304 set thread context of 4388	4304	NURSULTAN.exe	86

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Uninstall Information\SearchApp.exe	YihSFVKFwn.exe
File created	C:\Program Files\Uninstall Information\38384e6a620884	YihSFVKFwn.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\fr-FR\csrss.exe	YihSFVKFwn.exe
File created	C:\Windows\apppatch\fr-FR\886983d96e3d3e	YihSFVKFwn.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1580	4304	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 2 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	NURSULTAN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NURSULTAN.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000_Classes\Local Settings	YihSFVKFwn.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4800	schtasks.exe
4804	schtasks.exe
4420	schtasks.exe
2024	schtasks.exe
3548	schtasks.exe
3888	schtasks.exe
464	schtasks.exe
760	schtasks.exe
3296	schtasks.exe
3000	schtasks.exe
4848	schtasks.exe
2336	schtasks.exe
3424	schtasks.exe
3148	schtasks.exe
1280	schtasks.exe
3960	schtasks.exe
1016	schtasks.exe
4368	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe
4640	YihSFVKFwn.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4640	YihSFVKFwn.exe
Token: SeDebugPrivilege	1916	powershell.exe
Token: SeDebugPrivilege	444	powershell.exe
Token: SeDebugPrivilege	4544	powershell.exe
Token: SeDebugPrivilege	1768	powershell.exe
Token: SeDebugPrivilege	3080	powershell.exe
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeIncreaseQuotaPrivilege	3080	powershell.exe
Token: SeSecurityPrivilege	3080	powershell.exe
Token: SeTakeOwnershipPrivilege	3080	powershell.exe
Token: SeLoadDriverPrivilege	3080	powershell.exe
Token: SeSystemProfilePrivilege	3080	powershell.exe
Token: SeSystemtimePrivilege	3080	powershell.exe
Token: SeProfSingleProcessPrivilege	3080	powershell.exe
Token: SeIncBasePriorityPrivilege	3080	powershell.exe
Token: SeCreatePagefilePrivilege	3080	powershell.exe
Token: SeBackupPrivilege	3080	powershell.exe
Token: SeRestorePrivilege	3080	powershell.exe
Token: SeShutdownPrivilege	3080	powershell.exe
Token: SeDebugPrivilege	3080	powershell.exe
Token: SeSystemEnvironmentPrivilege	3080	powershell.exe
Token: SeRemoteShutdownPrivilege	3080	powershell.exe
Token: SeUndockPrivilege	3080	powershell.exe
Token: SeManageVolumePrivilege	3080	powershell.exe
Token: 33	3080	powershell.exe
Token: 34	3080	powershell.exe
Token: 35	3080	powershell.exe
Token: 36	3080	powershell.exe
Token: SeIncreaseQuotaPrivilege	4560	powershell.exe
Token: SeSecurityPrivilege	4560	powershell.exe
Token: SeTakeOwnershipPrivilege	4560	powershell.exe
Token: SeLoadDriverPrivilege	4560	powershell.exe
Token: SeSystemProfilePrivilege	4560	powershell.exe
Token: SeSystemtimePrivilege	4560	powershell.exe
Token: SeProfSingleProcessPrivilege	4560	powershell.exe
Token: SeIncBasePriorityPrivilege	4560	powershell.exe
Token: SeCreatePagefilePrivilege	4560	powershell.exe
Token: SeBackupPrivilege	4560	powershell.exe
Token: SeRestorePrivilege	4560	powershell.exe
Token: SeShutdownPrivilege	4560	powershell.exe
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeSystemEnvironmentPrivilege	4560	powershell.exe
Token: SeRemoteShutdownPrivilege	4560	powershell.exe
Token: SeUndockPrivilege	4560	powershell.exe
Token: SeManageVolumePrivilege	4560	powershell.exe
Token: 33	4560	powershell.exe
Token: 34	4560	powershell.exe
Token: 35	4560	powershell.exe
Token: 36	4560	powershell.exe
Token: SeIncreaseQuotaPrivilege	1916	powershell.exe
Token: SeSecurityPrivilege	1916	powershell.exe
Token: SeTakeOwnershipPrivilege	1916	powershell.exe
Token: SeLoadDriverPrivilege	1916	powershell.exe
Token: SeSystemProfilePrivilege	1916	powershell.exe
Token: SeSystemtimePrivilege	1916	powershell.exe
Token: SeProfSingleProcessPrivilege	1916	powershell.exe
Token: SeIncBasePriorityPrivilege	1916	powershell.exe
Token: SeCreatePagefilePrivilege	1916	powershell.exe
Token: SeBackupPrivilege	1916	powershell.exe
Token: SeRestorePrivilege	1916	powershell.exe
Token: SeShutdownPrivilege	1916	powershell.exe
Token: SeDebugPrivilege	1916	powershell.exe
Token: SeSystemEnvironmentPrivilege	1916	powershell.exe
Token: SeRemoteShutdownPrivilege	1916	powershell.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 4304 wrote to memory of 1856	4304	NURSULTAN.exe	84
PID 4304 wrote to memory of 1856	4304	NURSULTAN.exe	84
PID 4304 wrote to memory of 1856	4304	NURSULTAN.exe	84
PID 4304 wrote to memory of 360	4304	NURSULTAN.exe	85
PID 4304 wrote to memory of 360	4304	NURSULTAN.exe	85
PID 4304 wrote to memory of 360	4304	NURSULTAN.exe	85
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4304 wrote to memory of 4388	4304	NURSULTAN.exe	86
PID 4388 wrote to memory of 3352	4388	NURSULTAN.exe	91
PID 4388 wrote to memory of 3352	4388	NURSULTAN.exe	91
PID 4388 wrote to memory of 4640	4388	NURSULTAN.exe	93
PID 4388 wrote to memory of 4640	4388	NURSULTAN.exe	93
PID 4640 wrote to memory of 1072	4640	YihSFVKFwn.exe	98
PID 4640 wrote to memory of 1072	4640	YihSFVKFwn.exe	98
PID 1072 wrote to memory of 2672	1072	csc.exe	100
PID 1072 wrote to memory of 2672	1072	csc.exe	100
PID 4640 wrote to memory of 1768	4640	YihSFVKFwn.exe	116
PID 4640 wrote to memory of 1768	4640	YihSFVKFwn.exe	116
PID 4640 wrote to memory of 1916	4640	YihSFVKFwn.exe	117
PID 4640 wrote to memory of 1916	4640	YihSFVKFwn.exe	117
PID 4640 wrote to memory of 4560	4640	YihSFVKFwn.exe	118
PID 4640 wrote to memory of 4560	4640	YihSFVKFwn.exe	118
PID 4640 wrote to memory of 444	4640	YihSFVKFwn.exe	119
PID 4640 wrote to memory of 444	4640	YihSFVKFwn.exe	119
PID 4640 wrote to memory of 3080	4640	YihSFVKFwn.exe	120
PID 4640 wrote to memory of 3080	4640	YihSFVKFwn.exe	120
PID 4640 wrote to memory of 4544	4640	YihSFVKFwn.exe	121
PID 4640 wrote to memory of 4544	4640	YihSFVKFwn.exe	121
PID 4640 wrote to memory of 116	4640	YihSFVKFwn.exe	128
PID 4640 wrote to memory of 116	4640	YihSFVKFwn.exe	128
PID 116 wrote to memory of 968	116	cmd.exe	130
PID 116 wrote to memory of 968	116	cmd.exe	130
PID 116 wrote to memory of 756	116	cmd.exe	131
PID 116 wrote to memory of 756	116	cmd.exe	131
PID 116 wrote to memory of 2396	116	cmd.exe	133
PID 116 wrote to memory of 2396	116	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\NURSULTAN.exe
"C:\Users\Admin\AppData\Local\Temp\NURSULTAN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4304
- C:\Users\Admin\AppData\Local\Temp\NURSULTAN.exe
  "C:\Users\Admin\AppData\Local\Temp\NURSULTAN.exe"
  2⤵
  PID:1856
- C:\Users\Admin\AppData\Local\Temp\NURSULTAN.exe
  "C:\Users\Admin\AppData\Local\Temp\NURSULTAN.exe"
  2⤵
  PID:360
- C:\Users\Admin\AppData\Local\Temp\NURSULTAN.exe
  "C:\Users\Admin\AppData\Local\Temp\NURSULTAN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4388
- - C:\Users\Admin\AppData\Roaming\fYZNm3i7Xv.exe
    "C:\Users\Admin\AppData\Roaming\fYZNm3i7Xv.exe"
    3⤵
    - Executes dropped EXE
    PID:3352
- - C:\Users\Admin\AppData\Roaming\YihSFVKFwn.exe
    "C:\Users\Admin\AppData\Roaming\YihSFVKFwn.exe"
    3⤵
    - Modifies WinLogon for persistence
    - Checks computer location settings
    - Executes dropped EXE
    - 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:4640
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\0j0r2scp\0j0r2scp.cmdline"
      4⤵
      Drops file in System32 directory
      Suspicious use of WriteProcessMemory
      PID:1072
    - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8731.tmp" "c:\Windows\System32\CSC4423BE21A09749CD8CCED3C76E3B03B.TMP"
        5⤵
        
        PID:2672
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\RuntimeBroker.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious use of AdjustPrivilegeToken
      PID:1768
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Uninstall Information\SearchApp.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious use of AdjustPrivilegeToken
      PID:1916
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\apppatch\fr-FR\csrss.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious use of AdjustPrivilegeToken
      PID:4560
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Default\OfficeClickToRun.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious use of AdjustPrivilegeToken
      PID:444
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\RuntimeBroker.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious use of AdjustPrivilegeToken
      PID:3080
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\YihSFVKFwn.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious use of AdjustPrivilegeToken
      PID:4544
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\vvNz7vyJmQ.bat"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:116
    - - C:\Windows\system32\chcp.com
        
        chcp 65001
        5⤵
        
        PID:968
    - - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        5⤵
        
        PID:756
    - - C:\Users\Admin\AppData\Roaming\YihSFVKFwn.exe
        
        "C:\Users\Admin\AppData\Roaming\YihSFVKFwn.exe"
        5⤵
        Executes dropped EXE
        
        PID:2396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4304 -s 832
  2⤵
  - Program crash
  PID:1580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4304 -ip 4304
1⤵
PID:4428

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4800

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2336

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3424

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 14 /tr "'C:\Program Files\Uninstall Information\SearchApp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4804

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4420

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 10 /tr "'C:\Program Files\Uninstall Information\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1016

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Windows\apppatch\fr-FR\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2024

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\apppatch\fr-FR\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3148

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Windows\apppatch\fr-FR\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4368

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 9 /tr "'C:\Users\Default\OfficeClickToRun.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Users\Default\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3296

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 13 /tr "'C:\Users\Default\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1280

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3000

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.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 "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3888

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "YihSFVKFwnY" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\AppData\Roaming\YihSFVKFwn.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3960

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "YihSFVKFwn" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Roaming\YihSFVKFwn.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:464

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "YihSFVKFwnY" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\AppData\Roaming\YihSFVKFwn.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4848

Network

MITRE ATT&CK Enterprise v15

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

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\YihSFVKFwn.exe.log

Filesize
1KB

MD5
3472240ba9018b36cebbb3fa4d9ecde2

SHA1
fa7d94af70df8bd1719c25cc1485c093354e3cb6

SHA256
4ff5eaa183765d37205065b36b4212117fe7cc93216a5cdc88649d8943b4f449

SHA512
4ac5bedcf0e686dd86e82ca4dc02f6ec0b5a3a5dd06056856dee7ef230f3abbf37e8237a08f3d9d31e24bf9c8a21eca04a824846a2f5bd50d6defd470a53db3a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
90d696d6a8ab185c1546b111fa208281

SHA1
b0ce1efde1dad3d65f7a78d1f6467d8a1090d659

SHA256
78497ed2c4ccac6e870afc80224724f45a7356bde55580a5c6ea52ef5079a3f4

SHA512
0a19628ae31ec31f382b3fd430c205a39985730e12c608b66b83ee4826e3f3fc9f4a034e03f38ac5260defdf805b927528ffca1a2ccdd59d9bfe05822923c4ba

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
83d94e8aa23c7ad2db6f972739506306

SHA1
bd6d73d0417971c0077f772352d2f538a6201024

SHA256
dfa5cbd243b304f47196c492bc2d8b29941a550c2f076ef8bdfca72755e71881

SHA512
4224625e8ef8dadc72f1e1a1edfe2079656b14f2af94ce6128316481d96e9d0b6edf4de13fcdcc182038a2b29eb562b9246f944aecebfcb7c5ee8d7936b6287e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
488B

MD5
0dbcc7e7d5448f5b975f2ca75530461d

SHA1
d8d216fac9922e829d996bd65eeb73ab05764d75

SHA256
531cecd55b8571638cadd05fda7be3a9e51770d6b19e4ad781eb410a73b66352

SHA512
41e5b085ed337af1f7c29610be0de621e9f161d406060cbfb5ec9c1fb7c017c1462e0550cfc4061a70d3ab01fa44899fb8c2ee885f9048f79a142672361ec50b

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES8731.tmp

Filesize
1KB

MD5
37f8adc7efdd9be1cd016312f9ef787d

SHA1
305e45bb55e48b5988103ec14cebdeff928e75ec

SHA256
f6fabd71f4a8eed3945d8f5318efc4c51bdf630ba084510dcd51377ecd6af2c8

SHA512
2c9d08f011e02401f3f119780b887da667d3c7ae6b4d32e912e060066faf272486c62145eefbdf5ffd8ad0e06181c46ebd59f77e637d3d965ecfa973ab8dbbb8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3c2dvbxu.iud.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\vvNz7vyJmQ.bat

Filesize
221B

MD5
526fcddc5bf35263b3c4981e3946b94e

SHA1
c763991cd055ef324dd51e27be3e01cc849e17dd

SHA256
3c226ad28bcf4be56f4bc03e702ffc8c52897ed187a0e0be118013052012ca5b

SHA512
86e78ef9cbc90e7e998de80b43fd70af147982bb9573db2c564cce0d3f94b17a5d95c9c055b1148cc018884e055e126f44c5c043ac953830834cc334d7932a0e

Download Submit
C:\Users\Admin\AppData\Roaming\YihSFVKFwn.exe

Filesize
1.8MB

MD5
c3a59b9df64f75bb34d4a18a59f1a9d1

SHA1
93066e297fe1be0c228e40078443670d655b743d

SHA256
a4e26cfb8ec5fd1e36f33d02f196f711bcedb06baa02b6b50e1c588845d948dc

SHA512
d39fb4e7202c9e31abc1f4802f9b29a0db4d53d636bae7f5051ff64d082ed668a7f45cf8d22728cc8ed7dc785efb603e89b5cecb24fa92c7ac5d395282f6d307

Download Submit
C:\Users\Admin\AppData\Roaming\fYZNm3i7Xv.exe

Filesize
18KB

MD5
f3edff85de5fd002692d54a04bcb1c09

SHA1
4c844c5b0ee7cb230c9c28290d079143e00cb216

SHA256
caf29650446db3842e1c1e8e5e1bafadaf90fc82c5c37b9e2c75a089b7476131

SHA512
531d920e2567f58e8169afc786637c1a0f7b9b5c27b27b5f0eddbfc3e00cecd7bea597e34061d836647c5f8c7757f2fe02952a9793344e21b39ddd4bf7985f9d

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\0j0r2scp\0j0r2scp.0.cs

Filesize
371B

MD5
55ec8b132a35f6d6c4b6c8a1ae78167e

SHA1
4b44e9a29bb262c6db8a4c7f200d5c3cd5840aa6

SHA256
dda9627d7b82e68da9da3219a7f7d0e6d0017243027942c8155a8cfd6691c80e

SHA512
a1adce4b8cb9e83c5fed22d48d9cb0e58796864fa0c61dbf7aafb9002e2825d75dd61f4e3204836526df2d1346e6ee8a5f4cb632221a3e16d5149445940f97a2

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\0j0r2scp\0j0r2scp.cmdline

Filesize
235B

MD5
d35521e0821cb2abc9db335db88a3851

SHA1
5c8987b7529f9ef8ab024ffb7705412a7ed6afe9

SHA256
ebb6967d5497d594a334b4aaac1f08f453c5c6e55ce19352531e5890700d35f6

SHA512
2dc89892d24b779317c2fdda3c6287c9c879aa1748084b099ee6cf4d3fbeaad33384b20362ac96d95963b43e82d5cccb31acad86f13aea51c1739a96975380a4

Download Submit
\??\c:\Windows\System32\CSC4423BE21A09749CD8CCED3C76E3B03B.TMP

Filesize
1KB

MD5
74ea237d4e807ef6a4ba567337ffe990

SHA1
3ae88dc47b87b88069e5049e48afc5fd1c513571

SHA256
8dd81ac7dd07f708babaa8cddb161387c1aed69fe4ffd7775a5f5344ec623edf

SHA512
d79333f2199b189e1c26cf090262b2e87d7154e07bad8621962279c58f31056c2a984574ce817d7aa9275af7cb5c3cc9d74cccf9afca77a370194e87e643cbdf

Download Submit
memory/1916-92-0x0000022692A50000-0x0000022692A72000-memory.dmp

Filesize
136KB

Download
memory/2396-163-0x0000000000BF0000-0x0000000000BF8000-memory.dmp

Filesize
32KB

Download
memory/4304-2-0x0000000005790000-0x0000000005D36000-memory.dmp

Filesize
5.6MB

Download
memory/4304-1-0x00000000005F0000-0x000000000080A000-memory.dmp

Filesize
2.1MB

Download
memory/4304-8-0x0000000075140000-0x00000000758F1000-memory.dmp

Filesize
7.7MB

Download
memory/4304-0-0x000000007514E000-0x000000007514F000-memory.dmp

Filesize
4KB

Download
memory/4388-38-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/4388-4-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/4388-7-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/4388-6-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/4388-40-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/4388-5-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/4388-9-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/4640-49-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-132-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-41-0x00007FF9BE9E3000-0x00007FF9BE9E5000-memory.dmp

Filesize
8KB

Download
memory/4640-59-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-52-0x000000001BFC0000-0x000000001C010000-memory.dmp

Filesize
320KB

Download
memory/4640-56-0x000000001BAF0000-0x000000001BAFC000-memory.dmp

Filesize
48KB

Download
memory/4640-57-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-54-0x000000001BF70000-0x000000001BF88000-memory.dmp

Filesize
96KB

Download
memory/4640-51-0x000000001BD30000-0x000000001BD4C000-memory.dmp

Filesize
112KB

Download
memory/4640-65-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-142-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-48-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-47-0x0000000002F80000-0x0000000002F8E000-memory.dmp

Filesize
56KB

Download
memory/4640-45-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-44-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-43-0x00007FF9BE9E0000-0x00007FF9BF4A2000-memory.dmp

Filesize
10.8MB

Download
memory/4640-42-0x0000000000E20000-0x0000000000FFA000-memory.dmp

Filesize
1.9MB

Download