Analysis

  • max time kernel
    148s
  • max time network
    139s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/08/2026, 15:00

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260826-sdmznafj5v
  • SHA256 fb04da475eea56a85c1c88d7dae5c49b6ce63cc9f33fac29069a1b54885ee09b
  • 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 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:1396
  • 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:2588
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 3DAC092FDAE7DCD9B195998F122BF898 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2536
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI113C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240718421 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3932
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1583.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240719265 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2032
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1C5A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240721187 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2344
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2200
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0E75DCA9E5A2E51B501454BCD9383512
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1416
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 09197E8CDFC45675964F9DB867FA0B24 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5084
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5656
    • C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-u38p08-relay.screenconnect.com&p=443&s=4d7ab38a-1dfb-4e94-88e1-dc2bffef1cea&k=BgIAAACkAABSU0ExAAgAAAEAAQAlbUSjrl3aCJYeDMbxAkytscnxvRIRA0Jzkp2zXCzSs36hLCIQu85Z1xzQtny%2bRDvPNIvT%2fg4p%2fXGvrUMuiDT%2b1p4MdMFuzNFPL4Ojlj1o6VDfQpcyLt5RomVcqCMwVsM%2b3NBPfkDJ%2b%2f0VNS3IiCf%2bLAnXkmluVYG%2foFGxqL7ufe4y28Mn09cuBm%2fK2wFPE6Zh%2blzQ1hQu20FZlKbAvRne%2bM%2fCOL5BlJKmcjbIj0z8gwaYT2VfBqItvJPVd3wvYxT2l%2bZlmMql5UtD3mwv47P1tKdKCr5iB6NASeUCEdyX5xZ9xTrSqLV6ebN8sr2pcc727JpLXymcvYKbPG7rehu7"
      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:5620
      • C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.WindowsClient.exe" "RunRole" "4fee9b6e-10db-47d6-8e99-92f6080580f8" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5360
      • C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.WindowsClient.exe" "RunRole" "95649f3b-b28d-4c05-ab81-2765df56890d" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2580

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e595b46.rbs

          • Path C:\Config.Msi\e595b46.rbs
          • Size 214KB
          • SHA256 9adfb5293a3bb355b4fd82723af618ea0737c269929eb69caaf8ce93b2fb3ae3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.WindowsClient.exe
          • Size 678KB
          • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (47a7ee4c3a0172bd)\system.config
          • Size 972B
          • SHA256 62e7ae0d3359ccd346b9365654b078a8b2ce75db304282cdb41c9bbf2f46b3ff
          • MD5 SHA1 SHA512 TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 342B
          • SHA256 9a66353cbcefbd8ee05491a38e28978f36a7ae6ee67cfb51658426db44954731
          • MD5 SHA1 SHA512 TLSH

          MSI113C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI113C.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI113C.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI113C.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI113C.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI113C.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1583.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1583.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI985F.tmp

          • Path C:\Windows\Installer\MSI985F.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e595b45.msi

          • Path C:\Windows\Installer\e595b45.msi
          • Size 9.8MB
          • SHA256 fb04da475eea56a85c1c88d7dae5c49b6ce63cc9f33fac29069a1b54885ee09b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          qvyal4fw.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (47a7ee4c3a0172bd)\qvyal4fw.newcfg
          • Size 683B
          • SHA256 036220aa2b5fb9f66774800d7a70ec0b99bd5e4503d8ddc69669b2b2272f6fbc
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (47a7ee4c3a0172bd)\user.config
          • Size 520B
          • SHA256 b9aa36f478c6012fd02cfddb4de013404093691394d0a3a38d7d1e4f7b04c9d8
          • MD5 SHA1 SHA512 TLSH

          vmfrp2r3.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (47a7ee4c3a0172bd)\vmfrp2r3.newcfg
          • Size 883B
          • SHA256 efee8b01e7e078227934e24c92b6e97f8c726dcc169c9134a4b7d21ab9357f57
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 45636eec2ca2fb32977e8323c5dadac81a290ecd6e819c60cdf13b704cae8609
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {4c994ab8-9030-4319-b70a-4be3a1a12cdb}_OnDiskSnapshotProp

          • Path \??\Volume{c61fa831-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{4c994ab8-9030-4319-b70a-4be3a1a12cdb}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b369ac963d5023855e93a260b2b39dd2230d6d810345de41822ee25947d29d1d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2032-62-0x00000000032C0000-0x00000000032E8000-memory.dmp

          memory/3932-19-0x0000000005430000-0x000000000545E000-memory.dmp

          memory/3932-27-0x0000000005520000-0x00000000055B4000-memory.dmp

          memory/3932-32-0x0000000005EE0000-0x000000000649A000-memory.dmp

          memory/3932-31-0x0000000005770000-0x0000000005920000-memory.dmp

          memory/3932-23-0x0000000005470000-0x000000000547C000-memory.dmp

          memory/5360-210-0x0000000000900000-0x00000000009AE000-memory.dmp

          memory/5360-211-0x000000001B5B0000-0x000000001B61C000-memory.dmp

          memory/5360-215-0x000000001BF80000-0x000000001C108000-memory.dmp

          memory/5360-214-0x0000000001220000-0x000000000123A000-memory.dmp

          memory/5360-213-0x000000001BC40000-0x000000001BDF0000-memory.dmp

          memory/5360-212-0x000000001B9F0000-0x000000001BA84000-memory.dmp

          memory/5620-189-0x0000000004BA0000-0x0000000004BE1000-memory.dmp

          memory/5620-167-0x0000000004B50000-0x0000000004BA0000-memory.dmp

          memory/5620-154-0x00000000049A0000-0x0000000004B50000-memory.dmp

          memory/5620-187-0x0000000004D20000-0x0000000004DB2000-memory.dmp

          memory/5620-150-0x0000000004750000-0x00000000047E4000-memory.dmp

          memory/5620-144-0x0000000004690000-0x00000000046AA000-memory.dmp

          memory/5620-186-0x0000000004C10000-0x0000000004C7C000-memory.dmp

          memory/5620-191-0x0000000004F10000-0x0000000004FE6000-memory.dmp