Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    03/05/2026, 12:17

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample260503-pf91escs2p
  • SHA256 47eef4a089230024b8cbd1eaa7a5e324bf3da82497d8d02cf218f4e336570765
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 11 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • 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 3 IoCs
  • Modifies registry class 32 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • Uses Volume Shadow Copy service COM API

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

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:3828
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.3.4.9288\9da980f2c762468d\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:2548
  • 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 WriteProcessMemory
    PID:2468
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 084B5CF3DC015F557B4546D3B446F783 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5840
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI896.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240650453 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2536
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4836
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 41C7A08FB88710C03C15365757F96419
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5532
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:616

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e584439.rbs

          • Path C:\Config.Msi\e584439.rbs
          • Size 10KB
          • SHA256 aab2f15d0d1c612489ab95de6450aafe4f87dd5ee0bcff5ef26b6f28963653f0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI896.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI896.tmp
          • Size 1.0MB
          • SHA256 a5c116a5746888cdd47fae8269e5d5cc1fa51617744c50256619c75e540034e0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI896.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI896.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 1e9eacd3c680b18f3bfee12a835a49d63fed76056aedb2b2ef312999eb6b4033
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI896.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 af7b515d5ea17e6811f7fd4e0fe76b7bbc6c2ff4e58dc005c86fa30d44f184ca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI896.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 f6e77233f0995581f3171ee92c5cab5b8052d177d333a4999e16e696616739a6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.3.4.9288\9da980f2c762468d\ScreenConnect.ClientSetup.msi
          • Size 12.8MB
          • SHA256 e9c647495f2eb8a1212c14ae560f32410a22107017f8ce8616c73862a8a60988
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI45FE.tmp

          • Path C:\Windows\Installer\MSI45FE.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 18399fcd0b9644eb8a2a95f1ecb0eba390a1e19203c2ce8329aa0d6567b13bb0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {517f1b12-bc2b-4680-ba7f-1923ac0c958f}_OnDiskSnapshotProp

          • Path \??\Volume{21a5fa1d-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{517f1b12-bc2b-4680-ba7f-1923ac0c958f}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 69675c6165aaa1013343a9f5a8aaa2a69beee1a902520e6f9e25cf449739aeda
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2536-35-0x0000000004C40000-0x0000000004C4A000-memory.dmp

          memory/2536-39-0x0000000004CE0000-0x0000000004D6E000-memory.dmp

          memory/2536-43-0x0000000004F20000-0x00000000050CC000-memory.dmp

          memory/2536-31-0x0000000004C10000-0x0000000004C3E000-memory.dmp

          memory/3828-6-0x0000000005400000-0x00000000055AC000-memory.dmp

          memory/3828-3-0x0000000005670000-0x0000000005962000-memory.dmp

          memory/3828-2-0x0000000005360000-0x0000000005370000-memory.dmp

          memory/3828-5-0x0000000002CF0000-0x0000000002D12000-memory.dmp

          memory/3828-0-0x0000000005360000-0x0000000005370000-memory.dmp

          memory/3828-4-0x0000000005370000-0x00000000053FE000-memory.dmp

          memory/3828-11-0x0000000001300000-0x00000000013DF000-memory.dmp

          memory/3828-8-0x0000000005360000-0x0000000005370000-memory.dmp

          memory/3828-7-0x0000000005F10000-0x00000000064B6000-memory.dmp

          memory/3828-1-0x0000000002C00000-0x0000000002C08000-memory.dmp