Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    05/05/2026, 12:23

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample260505-pkgvfabx4l
  • SHA256 7993f61cd1798afe0ee4a980acc905f9ef3d641b9d1331bae053dfe584a4e68d
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 15 IoCs
  • Drops file in Windows directory 11 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⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.3.4.9288\f46f0dd8eefdd802\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4516
  • 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:6060
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 5AD136CA9CCB0C56594FCF7F88657668 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1960
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIFBF4.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240647453 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5848
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3628
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 29B98B5FE5FB79C4EC09C49706860F7E
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3292
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4416

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e5840af.rbs

          • Path C:\Config.Msi\e5840af.rbs
          • Size 10KB
          • SHA256 05a9cf51fd2183e7bc2ceafe27b63085ff79025c1c00efc7c6e215ab4818f17b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIFBF4.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFBF4.tmp
          • Size 1.0MB
          • SHA256 a5c116a5746888cdd47fae8269e5d5cc1fa51617744c50256619c75e540034e0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFBF4.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFBF4.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 1e9eacd3c680b18f3bfee12a835a49d63fed76056aedb2b2ef312999eb6b4033
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFBF4.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 af7b515d5ea17e6811f7fd4e0fe76b7bbc6c2ff4e58dc005c86fa30d44f184ca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFBF4.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\f46f0dd8eefdd802\ScreenConnect.ClientSetup.msi
          • Size 9.5MB
          • SHA256 77a3f54c9c8b3030ca23a88a1e7ee80febbe4de8254302dfd325c9567360be7d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI4206.tmp

          • Path C:\Windows\Installer\MSI4206.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 24338e412b52dae0ee28ef5cff9d8eda4c5ae230f289ef634928b969706ceb1d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {24a7243b-f47b-475f-ba1f-ce6d305cbdb4}_OnDiskSnapshotProp

          • Path \??\Volume{6fcb6a2b-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{24a7243b-f47b-475f-ba1f-ce6d305cbdb4}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 e94f79de0ba5629986f17e936b49fb7ce3bd4e64a3cda7f40c3dd7c19ae4b006
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2872-0-0x0000000005800000-0x0000000005810000-memory.dmp

          memory/2872-11-0x0000000009BF0000-0x0000000009C2B000-memory.dmp

          memory/2872-4-0x0000000005720000-0x00000000057AE000-memory.dmp

          memory/2872-7-0x00000000063B0000-0x0000000006954000-memory.dmp

          memory/2872-5-0x00000000057D0000-0x00000000057F2000-memory.dmp

          memory/2872-3-0x0000000005B10000-0x0000000005E02000-memory.dmp

          memory/2872-2-0x0000000005800000-0x0000000005810000-memory.dmp

          memory/2872-8-0x0000000005800000-0x0000000005810000-memory.dmp

          memory/2872-6-0x0000000005810000-0x00000000059BC000-memory.dmp

          memory/2872-1-0x0000000003020000-0x0000000003028000-memory.dmp

          memory/5848-35-0x0000000005120000-0x000000000512A000-memory.dmp

          memory/5848-43-0x0000000005400000-0x00000000055AC000-memory.dmp

          memory/5848-39-0x00000000051C0000-0x000000000524E000-memory.dmp

          memory/5848-31-0x00000000050F0000-0x000000000511E000-memory.dmp