Analysis

  • max time kernel
    149s
  • max time network
    121s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    08/05/2026, 12:18

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.9MB
  • Sample260508-pgvxwscs3j
  • SHA256 26a873579f80227816596e51f2ad4b47db8938effba451a7fe92179c273f1d12
  • 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 15 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:3680
  • 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:2444
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 8A3030ABEB28C3CACA0D337629556472 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3132
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIF5AA.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240645687 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3148
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:768
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 4901DED34FD5507779CEB9028AAFF191
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3404
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3316

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e582835.rbs

          • Path C:\Config.Msi\e582835.rbs
          • Size 10KB
          • SHA256 e4ac8079931c4bb326193eadd66f322b9b1f9f59fe8bf410891b7a1052493768
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIF5AA.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF5AA.tmp
          • Size 1.0MB
          • SHA256 64ddf83b4acb09b518518e07a8ffd0446d256ff842c113efa1cdb6378fdf1018
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF5AA.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF5AA.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 51d9dcd755a424b8b3122350bbcc02d453880c39636fb1e0265084161afca983
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF5AA.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 8f4a00b34720f19b0e67dc957085ad1986e58bb16a1abcc580dab21bcd61382d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF5AA.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 602a640e2d9f94acfe47d3946f7dd088992431e24b670d40233e1ae6e9e270ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI298D.tmp

          • Path C:\Windows\Installer\MSI298D.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e582834.msi

          • Path C:\Windows\Installer\e582834.msi
          • Size 12.9MB
          • SHA256 26a873579f80227816596e51f2ad4b47db8938effba451a7fe92179c273f1d12
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 fad0e70a1f53076d34949313de4f380bc7ea3f5a436a17f1a2481e680dcc9fc3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {e46d05c2-1645-4c30-86d1-cf47d82622f6}_OnDiskSnapshotProp

          • Path \??\Volume{a37a13d3-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{e46d05c2-1645-4c30-86d1-cf47d82622f6}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 842441ea4705f1171d924bbf7ca13328d235e79a5553d305f92ebb276cccf907
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2444-39-0x00000213956D0000-0x000002139574B000-memory.dmp

          memory/2444-83-0x00000213956D0000-0x000002139574B000-memory.dmp

          memory/3132-40-0x0000000001320000-0x000000000139B000-memory.dmp

          memory/3132-81-0x0000000001320000-0x000000000139B000-memory.dmp

          memory/3148-22-0x00000000057E0000-0x00000000057EA000-memory.dmp

          memory/3148-37-0x00000000014F0000-0x000000000156B000-memory.dmp

          memory/3148-18-0x00000000057A0000-0x00000000057CE000-memory.dmp

          memory/3148-31-0x0000000006240000-0x00000000067E6000-memory.dmp

          memory/3148-30-0x0000000005AE0000-0x0000000005C8C000-memory.dmp

          memory/3148-26-0x00000000058A0000-0x000000000592E000-memory.dmp

          memory/3404-80-0x0000000001320000-0x000000000139B000-memory.dmp

          memory/3680-38-0x00000222DE2D0000-0x00000222DE34B000-memory.dmp

          memory/3680-82-0x00000222DE2D0000-0x00000222DE34B000-memory.dmp