Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/09/2026, 00:22

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260909-anz3vszthx
  • SHA256 bdb6cdbb79a298eb6f2ee45c4b004338b882f5e6ee9aa24f2d973d3da4094220
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 15 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

  • ConnectWise ScreenConnect remote access tool

    ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Boot or Logon Autostart Execution: Authentication Package 1 TTPs 1 IoCs

    Suspicious Windows Authentication Registry Modification.

  • Drops file in System32 directory 10 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 13 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of WriteProcessMemory 9 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⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2784
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Boot or Logon Autostart Execution: Authentication Package
    • 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:3668
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 1588F668651E9F5A244ECEA6DF9D8690 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1548
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI22EF.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240722906 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1432
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2A24.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240724546 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1576
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI307E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240726156 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:676
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1456
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5F1927F2B83EF8A8E0C7B37C10976961
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:632
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding DA3CD7D7B3F18811397F9D7FF35EFB7D E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:3888
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1408
    • C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-jkmy42-relay.screenconnect.com&p=443&s=a230cbbc-7d55-4e8c-a329-781b6ca2d9e9&k=BgIAAACkAABSU0ExAAgAAAEAAQB9dRNp2nrkP04kMV2AYl8SUTJK%2bi1AlEzf%2boGtGkm0dEWg6ectJDwNY%2bP3VMbjNOQGZrgOrkzZC61AnxJvX4tSrM%2fAaUcZdXTE%2bG9gL%2bGQ3HsEWJAuDcdizqdksfSt179lpmbdklMIgYIeCWEuSVzc0ppyNVTXu%2fSxkJ0VefoGNG9WWR7YcicfzsMuVVpULWTbg98ReuxVM669uds8EtwjiyWGX7adZsEeW9BdrmSIoIuhUGLQMKnmRinqQnA2FlOVRCxc6gv8jBxiemQLQVXsnAMbn5nTUMKtmwZcyy1SoL4PtO59z3AzQ63HDABCkLdY6BwVu7FlnrRNZX91rrKx"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:828
      • C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe" "RunRole" "0c689e85-0b85-4e9c-a898-a80052e7950c" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1276
      • C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsClient.exe" "RunRole" "2cad4f71-7cab-4647-9f8e-42aee611c585" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3088

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e596818.rbs

          • Path C:\Config.Msi\e596818.rbs
          • Size 214KB
          • SHA256 0fdbbed1dd1f33b4101ee8fc3cc7616a677ab01d784589d9c0d99a606705d419
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (801dcfb7db58a19e)\system.config
          • Size 958B
          • SHA256 6c8d042b5f537d05222bfbe827527e358b43689ebd27fc50265ab41a6155d29b
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 35a7d8ba817afae60200b607ad149192b3c754674a5bd6d4423cdb18c04e0134
          • MD5 SHA1 SHA512 TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 342B
          • SHA256 cb2b1b8708f5771c0556eb1fdf3906e8990db9dde985bf895d1826c8bc0a10b9
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 22d302a1181bbbaa6bb1f2c2327b3731957b6040fa9ac9c6fbc01e6c61d4bced
          • MD5 SHA1 SHA512 TLSH

          rundll32.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\rundll32.exe.log
          • Size 746B
          • SHA256 ddebb6b1094dbef9e96754a74ebd4761d857864c9bd0b5f20a97259a6d7c8fe0
          • MD5 SHA1 SHA512 TLSH

          MSI22EF.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI22EF.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI22EF.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI22EF.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI22EF.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI22EF.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2A24.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI2A24.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIA55F.tmp

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

          e596817.msi

          • Path C:\Windows\Installer\e596817.msi
          • Size 9.8MB
          • SHA256 bdb6cdbb79a298eb6f2ee45c4b004338b882f5e6ee9aa24f2d973d3da4094220
          • MD5 SHA1 SHA512 SSDEEP TLSH

          fky2ehkg.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (801dcfb7db58a19e)\fky2ehkg.newcfg
          • Size 882B
          • SHA256 114ea14938f9594d4ff003d4c968cdca720796dcbb2e6afa0c5daed72c73e960
          • MD5 SHA1 SHA512 TLSH

          oztzaiir.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (801dcfb7db58a19e)\oztzaiir.newcfg
          • Size 683B
          • SHA256 8a6503cac83b1efe3fcdb7707d90121baf05cba99c8f13e9d5f42e7f04698012
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (801dcfb7db58a19e)\user.config
          • Size 520B
          • SHA256 d2beced8742eca989bf08d3d21b104a1d7cdf20d85c64f8a2e5531853a1b432d
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 e456ad84cc05eb17fb3d7e1795aca15f9a21260936c6107e294a4eb67ae65c4b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {501b53f0-0628-4e08-be30-bb0ae33e0897}_OnDiskSnapshotProp

          • Path \??\Volume{63ef4f52-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{501b53f0-0628-4e08-be30-bb0ae33e0897}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 f6d9348c66a6f2fca1285a10d22baeaf0db0299858e7542105f061c5af4818be
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/828-205-0x00000000048D0000-0x00000000049A6000-memory.dmp

          memory/828-159-0x0000000001B20000-0x0000000001B3A000-memory.dmp

          memory/828-169-0x00000000044A0000-0x0000000004650000-memory.dmp

          memory/828-192-0x0000000004410000-0x000000000447C000-memory.dmp

          memory/828-201-0x00000000046F0000-0x0000000004782000-memory.dmp

          memory/828-203-0x00000000043A0000-0x00000000043E1000-memory.dmp

          memory/828-165-0x0000000004250000-0x00000000042E6000-memory.dmp

          memory/828-171-0x0000000004350000-0x00000000043A0000-memory.dmp

          memory/1276-228-0x000000001CCF0000-0x000000001CE76000-memory.dmp

          memory/1276-223-0x0000000002EF0000-0x0000000002F5C000-memory.dmp

          memory/1276-227-0x0000000002D60000-0x0000000002D7A000-memory.dmp

          memory/1276-226-0x000000001BD30000-0x000000001BEE0000-memory.dmp

          memory/1276-222-0x0000000000B20000-0x0000000000BD0000-memory.dmp

          memory/1276-224-0x000000001BAE0000-0x000000001BB76000-memory.dmp

          memory/1432-36-0x00000000061B0000-0x0000000006754000-memory.dmp

          memory/1432-23-0x0000000005670000-0x000000000569E000-memory.dmp

          memory/1432-27-0x00000000056B0000-0x00000000056BC000-memory.dmp

          memory/1432-31-0x0000000005800000-0x0000000005896000-memory.dmp

          memory/1432-35-0x0000000005A50000-0x0000000005C00000-memory.dmp

          memory/1576-68-0x0000000002CB0000-0x0000000002CD8000-memory.dmp