Analysis

  • max time kernel
    148s
  • max time network
    133s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/08/2026, 15:16

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample260827-snwpjswtbz
  • SHA256 0561af45f46c8ecae3b1a7f90b566896bb6edd9e9d0a516d80ecd095a1be142b
  • 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.

  • 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 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 SetWindowsHookEx 4 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:3200
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\24.3.7.9067\a131a6da90813bdf\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:5152
  • 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:4236
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 80951B428445C88BC69586239DB8D784 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1104
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI54BD.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240735562 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3832
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3348
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 162DAC9C8117416ADAD0DBECB3B5E307
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5784
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1680

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e59a03f.rbs

          • Path C:\Config.Msi\e59a03f.rbs
          • Size 10KB
          • SHA256 756c9c748b99f6da60fe45c1eacd50610ed30c905729337491612b747246ea40
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI54BD.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI54BD.tmp
          • Size 1.0MB
          • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI54BD.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI54BD.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI54BD.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI54BD.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\24.3.7.9067\a131a6da90813bdf\ScreenConnect.ClientSetup.msi
          • Size 9.5MB
          • SHA256 ecb145484a5bc6408be32e240445414996bf5047faa031ebcdfea05b3122a95f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIA55F.tmp

          • Path C:\Windows\Installer\MSIA55F.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 5bcf63e3258a1ef2033f698aac0b7aa9393ac16498c6a56fa4ae9e32f78630fb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {002ba83b-a4ba-4ea6-bc8b-2c5d0e707991}_OnDiskSnapshotProp

          • Path \??\Volume{c4eee659-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{002ba83b-a4ba-4ea6-bc8b-2c5d0e707991}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 afe46d7d0482f122a27c8c3df27906b05268ccb1919317666e778d78171640f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3200-8-0x0000000005CF0000-0x00000000062AA000-memory.dmp

          memory/3200-6-0x0000000074780000-0x0000000074F3C000-memory.dmp

          memory/3200-13-0x0000000074780000-0x0000000074F3C000-memory.dmp

          memory/3200-9-0x0000000074780000-0x0000000074F3C000-memory.dmp

          memory/3200-10-0x0000000074780000-0x0000000074F3C000-memory.dmp

          memory/3200-4-0x0000000002B40000-0x0000000002B62000-memory.dmp

          memory/3200-1-0x0000000001150000-0x0000000001158000-memory.dmp

          memory/3200-7-0x0000000074780000-0x0000000074F3C000-memory.dmp

          memory/3200-0-0x0000000074792000-0x0000000074793000-memory.dmp

          memory/3200-2-0x0000000005440000-0x0000000005730000-memory.dmp

          memory/3200-3-0x0000000005020000-0x00000000050AC000-memory.dmp

          memory/3200-5-0x0000000005140000-0x00000000052EA000-memory.dmp

          memory/3832-32-0x0000000005C30000-0x0000000005C5E000-memory.dmp

          memory/3832-44-0x0000000005F80000-0x000000000612A000-memory.dmp

          memory/3832-40-0x0000000005D40000-0x0000000005DCC000-memory.dmp

          memory/3832-36-0x0000000005C60000-0x0000000005C6A000-memory.dmp