Analysis

  • max time kernel
    149s
  • max time network
    133s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    17/05/2026, 00:15

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.7MB
  • Sample260517-akb7maaz41
  • SHA256 b6292f45e3fc5aef14fc93a82b9fd5a55d26a1009b83cbab33795f7ab5178eec
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 5 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 3 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 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:2864
  • 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:1036
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 78184BDA5BCB898BF6B474BB7FE1F5BC C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5212
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI87B9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240683046 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2208
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8B06.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240683781 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1760
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSICA42.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240700000 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1180
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5456
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0A38841D9C3DFDCC5D8A3777A9FAB481
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5664
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 42835E2B7AAFB4445B4C821D17887398 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:6024
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2776
    • C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-km9bna-relay.screenconnect.com&p=443&s=e11049e1-4259-4f4c-a673-1262c7938eb7&k=BgIAAACkAABSU0ExAAgAAAEAAQCxn%2fB8iIsDW96nKHwU1kjO6d1mGh1xSFHDVIbpnbfybRShCRKseCdg%2fariEIwe4zTVaMgzTzBUcFBkAuNRkL897DkkPy9ozS%2bMNXkaqnCTjiCyXgrNaLRCiaxo3mFHxKqXheo6HI1I3S7HKRJdK%2bHFSZ3f7SsAVjG%2bCJdAqYJoN8xe8Pa1agTJ2xXjCqA%2fjrFu9I0rsFqFa%2bxTw1cG7LW55MmP%2fDCnfSsrHxtyjd0hJpconfKvGZ6F9%2bV4X9CJ%2bmXV%2bqYeOZJuWVBIwO0hLW%2fOKC2%2boAgxVu5hWlDwOK0r0ksv3lhSV5eweTmhEjWhY9s6A0TR9rz%2b5DayI4SvXjLN&c=maina&c=&c=&c=&c=&c=&c=&c="
      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:5944
      • C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.WindowsClient.exe" "RunRole" "ff07045f-a074-495e-b890-b2ccd1d925ac" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:648
      • C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.WindowsClient.exe" "RunRole" "e05332c2-95d9-49a7-9cfa-a957316ae6ac" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4200

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e58fa4a.rbs

          • Path C:\Config.Msi\e58fa4a.rbs
          • Size 214KB
          • SHA256 85ba0f556a5a7fd771fcc489ed77ee965e851c9d4165936bd8a8ad4771e46bfd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\Client.en-US.resources
          • Size 64KB
          • SHA256 a189e7cdb5953cbfb808962e5cc30fb344ef4b62cf9ec3533faf6bdc1bede15d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8d82d3d077a65cebe622fc147bd040c7acc92bda071a0438e828ce630350f9b5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.ClientService.dll
          • Size 89KB
          • SHA256 4dc25a19ecaa325d1b22a68d7a5499c8a750f26384cc24e18a9c13e43dcecb7b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 91fb4fa934401bc4d1869565b364cc122c5c5a16df08e75afbec99dddfc53b89
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.Core.dll
          • Size 575KB
          • SHA256 c2d1716a36be19218bbd7ae0c60ac6bce94e73b95a48e2261ad249b1b766c604
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 a46556ad79dd5ab964b03f7e8fee3df52ec3e95032ac0158e8a3f607ff1ccd16
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 dabcb7f19a375bd5eadf7efbd7b46095f94a5c8fde2b90a6982f721457e92dbc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (bd0efa335c0835c8)\system.config
          • Size 972B
          • SHA256 b274ddf53e283f5438b0d4e44b10f32643d09df46da9efa1e3dcdd2a56a46e97
          • MD5 SHA1 SHA512 TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 4KB
          • SHA256 0300e9ddb527990e8b59d06e9ccf3ec2bd92d3bbd0ef4fba69d6336e4195e82d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 e93d816661616f6d095433be09871b4808b9d0afad04325494e172030c5172da
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 21cf058e3327b5af3bc08239c6a0d31c3352d7add5bacd326fc5308bcb1c9502
          • MD5 SHA1 SHA512 TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 342B
          • SHA256 de2580e4b1945b7dd6c3021be86c5a6e0214bf01a5c16644d0fd6005bcc23d35
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 1090100c93417d7e7675da75a65659b412dc7e61851178f91b41e3967711665e
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 05aff6725d85fda9a4527055410d7434fb13e211df0d2708f0596855d00735ed
          • 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 76ced2c52d647683572ceac0687933e96e198b5a6f998457fa334763cc1ef978
          • MD5 SHA1 SHA512 TLSH

          MSI87B9.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI87B9.tmp
          • Size 1.1MB
          • SHA256 c99b56907ea67b189677af45b8c4b81e5109e30f81aabf100997e9f2b681ba45
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI87B9.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI87B9.tmp-\ScreenConnect.Core.dll
          • Size 565KB
          • SHA256 0a3147193829175d7da9704a06da7a143cf3ac7f9ba123f051e19c60f0985995
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI87B9.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 936055c9cecbce54167e3d865bed76119b8668d41e987f5c76e82a7c9cf1898c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI87B9.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c3941fb00af27c07d37e27a65f60420ec433db260c99c17a7321649e02e27bc0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8B06.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8B06.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 663b4d48e4183306995e4a66d4d8222292884152a6da85fe3800bb015b6c223b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIFC00.tmp

          • Path C:\Windows\Installer\MSIFC00.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e58fa49.msi

          • Path C:\Windows\Installer\e58fa49.msi
          • Size 9.7MB
          • SHA256 b6292f45e3fc5aef14fc93a82b9fd5a55d26a1009b83cbab33795f7ab5178eec
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/648-191-0x000000001CEE0000-0x000000001D090000-memory.dmp

          memory/648-199-0x0000000002760000-0x000000000277A000-memory.dmp

          memory/648-198-0x000000001E2D0000-0x000000001E458000-memory.dmp

          memory/648-200-0x000000001C7A0000-0x000000001C7BA000-memory.dmp

          memory/648-184-0x000000001C810000-0x000000001C87C000-memory.dmp

          memory/648-189-0x000000001CC90000-0x000000001CD24000-memory.dmp

          memory/648-183-0x00000000005E0000-0x000000000068A000-memory.dmp

          memory/1760-70-0x0000000004F30000-0x0000000004F58000-memory.dmp

          memory/2208-38-0x00000000058D0000-0x0000000005E76000-memory.dmp

          memory/2208-37-0x0000000005170000-0x0000000005320000-memory.dmp

          memory/2208-25-0x0000000002A30000-0x0000000002A5E000-memory.dmp

          memory/2208-33-0x0000000004E70000-0x0000000004F04000-memory.dmp

          memory/2208-29-0x0000000002A70000-0x0000000002A7C000-memory.dmp

          memory/5944-169-0x00000000041B0000-0x0000000004200000-memory.dmp

          memory/5944-174-0x0000000004560000-0x00000000045F2000-memory.dmp

          memory/5944-178-0x0000000004750000-0x0000000004825000-memory.dmp

          memory/5944-176-0x0000000004160000-0x00000000041A1000-memory.dmp

          memory/5944-173-0x0000000004270000-0x00000000042DC000-memory.dmp

          memory/5944-157-0x0000000003E40000-0x0000000003E5A000-memory.dmp

          memory/5944-167-0x0000000004310000-0x00000000044C0000-memory.dmp

          memory/5944-163-0x00000000040C0000-0x0000000004154000-memory.dmp