Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    30/07/2026, 09:37

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample260730-llpd5afb52
  • SHA256 404ea0022b777c6f39863df08b3de450efabf36abd9cc92c5bf300e72651861a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Signed with revoked ConnectWise certificate 1 IoCs

    Binary is signed using a ConnectWise certificate revoked for key compromise.

  • 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 17 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:1436
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\8092cf85c22e0ed2\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4204
  • 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:4108
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B6D38655612FF2B80BA97751CA38C227 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4832
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6D7A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240676531 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2120
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2484
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D84D29D176D33ED2D83027C017020D9F
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1176
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5096

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e58a99a.rbs

          • Path C:\Config.Msi\e58a99a.rbs
          • Size 10KB
          • SHA256 40d4fa8a03795d43d3e648e61c71aa282c05e66f6f634710ce29defc0be4f186
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI6D7A.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6D7A.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6D7A.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6D7A.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6D7A.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6D7A.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\8092cf85c22e0ed2\ScreenConnect.ClientSetup.msi
          • Size 12.9MB
          • SHA256 d613e1e5bb7e4ab43fd8e1d4dc07501d29d392ee8d059b1234ff5b04bbf52a5e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAB01.tmp

          • Path C:\Windows\Installer\MSIAB01.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 025c2bed8df8aa335f8adfc2551f500763c3b4adef440099d299dfa012b7a1da
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {c5e795f6-bdd0-44a9-93e6-4840f17401f3}_OnDiskSnapshotProp

          • Path \??\Volume{fef0c820-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{c5e795f6-bdd0-44a9-93e6-4840f17401f3}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b62a459290bcc4dda2ff7798fe64e44a61e60be359dea7f069b806ddd2fe2168
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1436-5-0x0000000004FB0000-0x0000000004FD2000-memory.dmp

          memory/1436-8-0x0000000005030000-0x0000000005040000-memory.dmp

          memory/1436-7-0x0000000005BD0000-0x0000000006174000-memory.dmp

          memory/1436-6-0x0000000005040000-0x00000000051EC000-memory.dmp

          memory/1436-0-0x0000000005030000-0x0000000005040000-memory.dmp

          memory/1436-4-0x0000000004F20000-0x0000000004FAC000-memory.dmp

          memory/1436-3-0x0000000005330000-0x0000000005622000-memory.dmp

          memory/1436-2-0x0000000005030000-0x0000000005040000-memory.dmp

          memory/1436-1-0x00000000009D0000-0x00000000009D8000-memory.dmp

          memory/2120-30-0x0000000002750000-0x000000000277E000-memory.dmp

          memory/2120-34-0x0000000002790000-0x000000000279A000-memory.dmp

          memory/2120-38-0x0000000004CF0000-0x0000000004D7C000-memory.dmp

          memory/2120-42-0x0000000004F30000-0x00000000050DC000-memory.dmp