Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 12:13

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260804-pd4evswtdy
  • SHA256 c5ef36dbedc91430a26637ced49d3119589ab8fdc276ae3b71fd908bd5d685da
  • 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.

  • 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 9 IoCs
  • 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.

  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 9 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 SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 10 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:4248
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\3a1d60ad5d6d5925\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:2692
  • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:6012
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 4D76B94F01A6B2CEF7B273974296654C C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4792
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI861E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240748250 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:248
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8B40.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240749437 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5452
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIAC17.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240757984 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4860
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1192
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5D055F3FAC8EC5F368808354C966C22E
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4892
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D849008965E0FAD73173762200662F4B E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3772
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:996
    • C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-dxaly9-relay.screenconnect.com&p=443&s=22f8588e-8680-4078-add5-8babf95bad39&k=BgIAAACkAABSU0ExAAgAAAEAAQABCvD24glS4aFSffotIe4wEpzD7sUQqoWI7m2TPFfGYRQPX4RsEFJPb4SpktKxBq1pmrU9Xbx2hHCXFBCxjD%2fwkhMLhXBQfRIKwYL8fcGFs6svlZ6lRnVpW7%2fbsXsr8zRc1sweSnLCVEm5t1uZrS6KuBwP2dbAgi8l2h2TE7kTgL8TViCIXvKZRIHDhlMD%2fTUaJphbvhg3CvR0r53xG5zp%2fmISbmQd6jLqNDbcUk%2fH9IE%2bEnBT0VMNRzNfSn6SLLQGhJZKfxpLPA6YoLx2n1b2pA2Uyui1TroE4OIUboK0UrNDl%2blOZ4N4YR9ap54%2f%2btCewLVpGxvFq4Zf8QV%2fM5Ho&c=79&c=02&c=03&c=04&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4348
      • C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsClient.exe" "RunRole" "c38bc976-29bf-419b-86a3-41eb8a834c25" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2604
      • C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsClient.exe" "RunRole" "b44d4aff-1c6f-40d8-80ea-2a33ff928d09" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5256

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59fbbc.rbs

          • Path C:\Config.Msi\e59fbbc.rbs
          • Size 214KB
          • SHA256 b83fcac813e24c6173248ca06ecb0b4024bc09e8ec82199b1dd3f6ccda5d79b7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsClient.exe
          • Size 678KB
          • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\system.config
          • Size 964B
          • SHA256 6cf0dd01674f3748969f5ecb8b307cc4de5f3763fd16b3d3c39ec52b1ab58cdf
          • MD5 SHA1 SHA512 TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 342B
          • SHA256 de97e293d8b6bbff7666b9892cbb4d577a48bcd7aaeec24717391bd8204498e9
          • MD5 SHA1 SHA512 TLSH

          MSI861E.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI861E.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI861E.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI861E.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI861E.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI861E.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8B40.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8B40.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\3a1d60ad5d6d5925\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 6874a48c772f2d8ecbd0c16d40bd5de192bf901c398f07908fb552128f96ea50
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI38F4.tmp

          • Path C:\Windows\Installer\MSI38F4.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          41ram3d0.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3a1d60ad5d6d5925)\41ram3d0.newcfg
          • Size 881B
          • SHA256 d868131bf1963675d93da235e10363d5a2eb096d7f4b343978e3c83c771c474c
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3a1d60ad5d6d5925)\user.config
          • Size 520B
          • SHA256 ed55001b1e726dfc76a86e63a1fe8f583f5117ffe599a2d76377d95bd7a453c5
          • MD5 SHA1 SHA512 TLSH

          vb1qikb4.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3a1d60ad5d6d5925)\vb1qikb4.newcfg
          • Size 683B
          • SHA256 5a6cd3f827749418a2b3df3c6781a097e5b69c4365d01238dbbb0e99e799d4ee
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 240e50a435e3c84a0ce4a7c83018f82adaf1db926107c6e0664bf122e06780bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {9bcafce9-ff8d-4455-8079-6ecab9e096ea}_OnDiskSnapshotProp

          • Path \??\Volume{c4eee659-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{9bcafce9-ff8d-4455-8079-6ecab9e096ea}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 ae0a553857ec791c2be6236be68e7479fabc4b4eca5967946158e60f19e51873
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/248-33-0x00000000035B0000-0x00000000035DE000-memory.dmp

          memory/248-45-0x0000000005970000-0x0000000005B20000-memory.dmp

          memory/248-41-0x0000000005720000-0x00000000057B4000-memory.dmp

          memory/248-37-0x00000000035E0000-0x00000000035EC000-memory.dmp

          memory/2604-228-0x000000001C540000-0x000000001C6C8000-memory.dmp

          memory/2604-225-0x000000001B390000-0x000000001B424000-memory.dmp

          memory/2604-226-0x000000001B5E0000-0x000000001B790000-memory.dmp

          memory/2604-224-0x000000001AF70000-0x000000001AFDC000-memory.dmp

          memory/2604-227-0x0000000000CC0000-0x0000000000CDA000-memory.dmp

          memory/2604-223-0x00000000002A0000-0x000000000034E000-memory.dmp

          memory/4248-7-0x00000000749E0000-0x000000007519C000-memory.dmp

          memory/4248-8-0x0000000006410000-0x00000000069CA000-memory.dmp

          memory/4248-13-0x00000000749E0000-0x000000007519C000-memory.dmp

          memory/4248-0-0x00000000749F2000-0x00000000749F3000-memory.dmp

          memory/4248-5-0x0000000005CA0000-0x0000000005E50000-memory.dmp

          memory/4248-11-0x00000000749E0000-0x000000007519C000-memory.dmp

          memory/4248-6-0x00000000749E0000-0x000000007519C000-memory.dmp

          memory/4248-10-0x00000000749E0000-0x000000007519C000-memory.dmp

          memory/4248-1-0x0000000001BD0000-0x0000000001BD8000-memory.dmp

          memory/4248-4-0x0000000005B90000-0x0000000005BB8000-memory.dmp

          memory/4248-2-0x0000000001D40000-0x0000000001D4C000-memory.dmp

          memory/4248-3-0x0000000005C10000-0x0000000005CA4000-memory.dmp

          memory/4348-168-0x0000000004A30000-0x0000000004BE0000-memory.dmp

          memory/4348-201-0x0000000004C80000-0x0000000004D12000-memory.dmp

          memory/4348-203-0x00000000048D0000-0x0000000004911000-memory.dmp

          memory/4348-205-0x0000000004E70000-0x0000000004F46000-memory.dmp

          memory/4348-200-0x0000000004940000-0x00000000049AC000-memory.dmp

          memory/4348-170-0x0000000004880000-0x00000000048D0000-memory.dmp

          memory/4348-164-0x00000000047E0000-0x0000000004874000-memory.dmp

          memory/4348-158-0x0000000002060000-0x000000000207A000-memory.dmp

          memory/5452-75-0x0000000005E10000-0x0000000005E38000-memory.dmp