Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/09/2026, 00:21

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260910-anj2mssglf
  • SHA256 2a3355d4f154eb73a41690b0463aaa2cabc44f697ffd23e9c4f7f67afec7e2b0
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 2 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 9 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 SetWindowsHookEx 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
    • Suspicious use of SetWindowsHookEx
    PID:4544
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • 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:2396
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 8F669C25C21D66A999ADB7580C0DCE97 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5660
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1052.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240718265 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1124
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI195B.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240720250 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1132
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI21E8.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240722625 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:264
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4220
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A1C39669078D82378312ED539C41269B
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2592
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5104C87C4B2F02228A08E0FDF04267EF E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2932
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2956
    • C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-pe15qe-relay.screenconnect.com&p=443&s=ba253448-ebb2-4135-882d-0a4d9993ea85&k=BgIAAACkAABSU0ExAAgAAAEAAQDNCVDq9x47bug8e0uddC8MzXjmi06g2BS33gu%2fVK62IKZ8PVmBpfPWJgL6xln3wZYuKGwrBUYEbSztmm%2f%2fgc%2bpDl5cegH9HkihX%2fwN00se%2faYb5VLqV3o1OdTYkll6hLuVLw9Ks9LKxdO3hGH6Iw8BttIt92pJq2WASHgZFbvqG9T%2fUFmKvMKEJzT10zJeErgbytQmTMKena%2fkIvvKsV4EAZ6%2fQm9QuTacUU1D%2f3CPNatoLfMo6RadV9yY1r%2bG6xDNUU6hMviKaA6u1VpNFLs29VEGiR26h2Mj1VS0JzlWJntNdIRwjxE%2fakGPDKqsm92ceTe%2bgWWVkA%2bQe6NomR%2fs"
      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:4960
      • C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.WindowsClient.exe" "RunRole" "8774cc47-7017-4dc5-a8ab-590f9d6a631d" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4820
      • C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.WindowsClient.exe" "RunRole" "923d38cc-595a-4d57-87b9-577b9d50716f" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4848

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e597c9a.rbs

          • Path C:\Config.Msi\e597c9a.rbs
          • Size 214KB
          • SHA256 0b657642ad02364bc7f233b2fbe511f5e2b83fe289c991ec007c7753d13357d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (377b6bec38469238)\system.config
          • Size 974B
          • SHA256 f0b36d396c4636c411281426552c792e2899fd7f5091c1e46af39a4f92bad9a0
          • MD5 SHA1 SHA512 TLSH

          MSI1052.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1052.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1052.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1052.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1052.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1052.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI195B.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI195B.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI8350.tmp

          • Path C:\Windows\Installer\MSI8350.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e597c99.msi

          • Path C:\Windows\Installer\e597c99.msi
          • Size 9.8MB
          • SHA256 2a3355d4f154eb73a41690b0463aaa2cabc44f697ffd23e9c4f7f67afec7e2b0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          l5usuqnp.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (377b6bec38469238)\l5usuqnp.newcfg
          • Size 883B
          • SHA256 44e6ae9143c502a2db3b3a31e9768afdb0d6590042c3b2582bc332b203170b74
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (377b6bec38469238)\user.config
          • Size 520B
          • SHA256 b8d4c9556b90b5637c157bad4ab0f6be54659ca624f44abe808060510e20c69c
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (377b6bec38469238)\user.config
          • Size 683B
          • SHA256 8640306be842bf59058139c31e09a8df443386a8a8af800ca2c1c402a12971d0
          • MD5 SHA1 SHA512 TLSH

          {9b732566-f55f-4ff0-a5ac-7879e520c687}_OnDiskSnapshotProp

          • Path \??\Volume{c61f3bad-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{9b732566-f55f-4ff0-a5ac-7879e520c687}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 ef8f88c095694371d28e3b971944fd888703a08104236f23c9c9e23482d04f36
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1124-34-0x00000000062F0000-0x00000000068AA000-memory.dmp

          memory/1124-33-0x0000000005B80000-0x0000000005D30000-memory.dmp

          memory/1124-21-0x0000000003830000-0x000000000385E000-memory.dmp

          memory/1124-25-0x0000000005880000-0x000000000588C000-memory.dmp

          memory/1124-29-0x0000000005930000-0x00000000059C6000-memory.dmp

          memory/1132-64-0x0000000005490000-0x00000000054B8000-memory.dmp

          memory/4820-204-0x0000000000960000-0x0000000000A10000-memory.dmp

          memory/4820-206-0x000000001B6B0000-0x000000001B71C000-memory.dmp

          memory/4820-210-0x000000001BFB0000-0x000000001C138000-memory.dmp

          memory/4820-209-0x0000000002C50000-0x0000000002C6A000-memory.dmp

          memory/4820-208-0x000000001BC70000-0x000000001BE20000-memory.dmp

          memory/4820-207-0x000000001BA20000-0x000000001BAB6000-memory.dmp

          memory/4960-182-0x0000000004260000-0x00000000042F2000-memory.dmp

          memory/4960-164-0x0000000003F20000-0x0000000003F70000-memory.dmp

          memory/4960-181-0x00000000041F0000-0x000000000425C000-memory.dmp

          memory/4960-141-0x0000000003D30000-0x0000000003D4A000-memory.dmp

          memory/4960-186-0x0000000004450000-0x0000000004526000-memory.dmp

          memory/4960-184-0x0000000003F70000-0x0000000003FB1000-memory.dmp

          memory/4960-151-0x0000000004040000-0x00000000041F0000-memory.dmp

          memory/4960-147-0x0000000003DF0000-0x0000000003E86000-memory.dmp