Analysis

  • max time kernel
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/06/2026, 00:18

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample260602-alpjcaaz3q
  • SHA256 ea7f608e0d0fe8dffbde3acfc6afdb5ad9624c31b21eaf1589c5f8f35332824e
  • 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 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:5484
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\ee9eaf2ee391fd0b\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4880
  • 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:1580
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 4FE0968C7AD52066E25BBE73203BD29E C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5076
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI92D5.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240685953 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5360
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4500
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding F8D1E04609AD6CF5071619D8D01B6425
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5236
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3992

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e58cb3b.rbs

          • Path C:\Config.Msi\e58cb3b.rbs
          • Size 10KB
          • SHA256 f62c54bdbd6bad0f679d9910412d743af5998935a372fd7ca8e96bda145857d6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI92D5.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI92D5.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI92D5.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI92D5.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI92D5.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI92D5.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\ee9eaf2ee391fd0b\ScreenConnect.ClientSetup.msi
          • Size 12.8MB
          • SHA256 73ccbdb09971456352d1de612984d3dd9ee4c0a5dc56e4e19961e9938eab6d4f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSICD00.tmp

          • Path C:\Windows\Installer\MSICD00.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 563a28df04db13902adba8ff024c3c30cd7754df711034cdba7efafc9c0c734b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {5e650eba-fc0b-45ac-ad94-85b4d1b8542d}_OnDiskSnapshotProp

          • Path \??\Volume{a40cd035-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{5e650eba-fc0b-45ac-ad94-85b4d1b8542d}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 2324c9d56d45aabd9c6383f3132da1f3733ab19988155bc170f7d0709083db7c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/5360-38-0x0000000004D10000-0x0000000004D9C000-memory.dmp

          memory/5360-30-0x0000000004BF0000-0x0000000004C1E000-memory.dmp

          memory/5360-34-0x0000000004C30000-0x0000000004C3A000-memory.dmp

          memory/5360-42-0x0000000004F50000-0x00000000050FC000-memory.dmp

          memory/5484-2-0x0000000005C20000-0x0000000005C30000-memory.dmp

          memory/5484-3-0x0000000005F30000-0x0000000006222000-memory.dmp

          memory/5484-0-0x0000000005C20000-0x0000000005C30000-memory.dmp

          memory/5484-4-0x0000000005CA0000-0x0000000005D2C000-memory.dmp

          memory/5484-8-0x0000000005C20000-0x0000000005C30000-memory.dmp

          memory/5484-7-0x00000000067D0000-0x0000000006D76000-memory.dmp

          memory/5484-1-0x0000000005BF0000-0x0000000005BF8000-memory.dmp

          memory/5484-6-0x0000000005D60000-0x0000000005F0C000-memory.dmp

          memory/5484-5-0x0000000005D40000-0x0000000005D62000-memory.dmp