Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/06/2026, 18:24

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.7MB
  • Sample260626-w2f3sset6p
  • SHA256 691c74f56d546998e51af78a4a55a0b13744b3d4a882b0247da05b59e1e1d6c6
  • 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 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:5512
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\b861fae9537e0e72\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:1800
  • 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:3492
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 2BB9FDC4C1FCB7AA016848D0D0BB15BF C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1588
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIF18F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240710203 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4784
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2828
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0FDF97E0E695E335307B80E12BCBBA96
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1996
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5784

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e595386.rbs

          • Path C:\Config.Msi\e595386.rbs
          • Size 10KB
          • SHA256 a098fda33853b3220a664b2e6ddc3d9dba1cd52b32fd0283d88286944342fe53
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIF18F.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF18F.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF18F.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF18F.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF18F.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF18F.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\b861fae9537e0e72\ScreenConnect.ClientSetup.msi
          • Size 13.7MB
          • SHA256 7baa46f0a120a74bef2a608feefb8effd0de257f406f9ef826e4d03667ff9840
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI5B75.tmp

          • Path C:\Windows\Installer\MSI5B75.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 27c3782c35553d68dd9e673e0e099ee54ae277c9aabecb87205fbe79ec09b065
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {c5ce9cf3-c920-4b72-8cf2-d627a6b6cc42}_OnDiskSnapshotProp

          • Path \??\Volume{833668ed-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{c5ce9cf3-c920-4b72-8cf2-d627a6b6cc42}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 57270215fc82858b65fddefe3a325cb9410585f9639083845d70ca823216372c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4784-44-0x00000000059B0000-0x0000000005B5C000-memory.dmp

          memory/4784-32-0x0000000005690000-0x00000000056BE000-memory.dmp

          memory/4784-40-0x0000000005770000-0x00000000057FC000-memory.dmp

          memory/4784-36-0x00000000056D0000-0x00000000056DA000-memory.dmp

          memory/5512-6-0x0000000003480000-0x00000000034A2000-memory.dmp

          memory/5512-13-0x0000000074AE0000-0x000000007529C000-memory.dmp

          memory/5512-10-0x0000000074AE0000-0x000000007529C000-memory.dmp

          memory/5512-9-0x0000000006590000-0x0000000006B4A000-memory.dmp

          memory/5512-7-0x0000000074AE0000-0x000000007529C000-memory.dmp

          memory/5512-8-0x00000000059E0000-0x0000000005B8C000-memory.dmp

          memory/5512-0-0x0000000074AF2000-0x0000000074AF3000-memory.dmp

          memory/5512-5-0x0000000005810000-0x000000000589C000-memory.dmp

          memory/5512-4-0x0000000074AE0000-0x000000007529C000-memory.dmp

          memory/5512-3-0x0000000074AE0000-0x000000007529C000-memory.dmp

          memory/5512-2-0x0000000005CE0000-0x0000000005FD2000-memory.dmp

          memory/5512-1-0x0000000001920000-0x0000000001928000-memory.dmp