Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/09/2026, 18:19

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.9MB
  • Sample260922-wyncpsce53
  • SHA256 0e332534eed5d46ca2884fb535f39b666bf47768dbbe9612573a223c9e61be9c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 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 4 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4796
  • 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:4428
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding AD105991ECAC154098879070698AA889 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4176
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIBFE0.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240697531 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4256
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2024
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A4C36BE138C44E1162D62348A41892EB
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2260
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:920

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e590026.rbs

          • Path C:\Config.Msi\e590026.rbs
          • Size 10KB
          • SHA256 fefae45d2e42199a229bb3f6db40c49b6299efef6985940d292856aeb3b9438f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIBFE0.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBFE0.tmp
          • Size 1.0MB
          • SHA256 416a0dad073a5cbcc233c1e5b41068812a557a19f3ca191408bb9efed39c653c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBFE0.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBFE0.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 111a09ba2105023d94d6682461527b6f42e525c948dd72bd6a0e1f412219beae
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBFE0.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 acb37b8341a0039629f99e7ec652a32deec149b3e732a1ab2c42dd9ddf5b08a1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBFE0.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 18e61eba427f20ce3c9d71359e9994c2849026be3c2d543043200c47c03fedd8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI1BC.tmp

          • Path C:\Windows\Installer\MSI1BC.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e590025.msi

          • Path C:\Windows\Installer\e590025.msi
          • Size 12.9MB
          • SHA256 0e332534eed5d46ca2884fb535f39b666bf47768dbbe9612573a223c9e61be9c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 f3ee63b7499cef33d62beb1d48ce9a9f3e5038c97bc716a6bf64c33e2c9860ce
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {865477de-b629-45bc-aa46-e0d118d0502d}_OnDiskSnapshotProp

          • Path \??\Volume{82411472-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{865477de-b629-45bc-aa46-e0d118d0502d}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b307e9ba88d09639b5dee95d9284d05f38b86a9ccd4c28f9e79412e3bc9d706e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4256-26-0x00000000055D0000-0x000000000565E000-memory.dmp

          memory/4256-22-0x0000000005530000-0x000000000553A000-memory.dmp

          memory/4256-30-0x0000000005810000-0x00000000059BC000-memory.dmp

          memory/4256-31-0x0000000005F70000-0x0000000006514000-memory.dmp

          memory/4256-18-0x0000000005500000-0x000000000552E000-memory.dmp