Analysis

  • max time kernel
    148s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/07/2026, 18:24

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260730-w11e2sde67
  • SHA256 579493d9176b1a78caf1c46719b8e841a0c3ec4f9003eab09a603b98a1f7ed3b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 4 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 15 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 4 IoCs
  • Loads dropped DLL 50 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 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 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 14 IoCs
  • Suspicious use of SendNotifyMessage 12 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:3568
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\ae47296aead93cbc\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:252
  • 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:1916
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 22B090CFB658125B03C9D1B0F8206547 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4068
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIBB96.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240761875 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1304
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIBE46.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240762937 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3232
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIC5C9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240764390 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4204
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2924
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 18CD4A9D4EB0B98535440E8E34022B5A
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5924
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3248C8AB3269B2887D4E1A4759ADE8EC E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4472
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2396
    • C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-a71nb0-relay.screenconnect.com&p=443&s=7d0cc1c4-42de-47e5-ad45-4cff0b5d904f&k=BgIAAACkAABSU0ExAAgAAAEAAQCNcRLaQyy6zRZrqC2k6V6C3VdJ6ENoxYWf3LSPAiqI8hUWo1IZLAcCmysH6sJTuyiGTVD7t4M6PVuNk4iFgxKpNukDJEAcb0J3KbWF5olqT3%2b8NV%2foYhoQG120IumLulmDNOFHqyjuCRyPDWPlGefk1KIw9FXU2np8wjn2NrjtzEi1wP3KjjnYMqXkXllA3rjrAotYjlJPWdfp1rbCm5T1MnCDlhI2gvFLQmk2ecndEbZaUSC0Fb6dY1lHwoOP3UgdQk4lDtQvIIWXA8g%2f%2bExbLEJlLOZr774Mqi5hEfegtnXbnlHK0T1R7QaLtslMqzOa3H5Jg0z5q6dVZMxTYNO%2f&c=Timothy&c=Marecki&c=&c=&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:5644
      • C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.WindowsClient.exe" "RunRole" "eff15d9e-4f9e-4540-bf27-dbe13bd558e4" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5712
      • C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.WindowsClient.exe" "RunRole" "103b8110-e156-45ee-9757-8e37dd52a5d0" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4160
    • C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-a71nb0-relay.screenconnect.com&p=443&s=7d0cc1c4-42de-47e5-ad45-4cff0b5d904f&k=BgIAAACkAABSU0ExAAgAAAEAAQCNcRLaQyy6zRZrqC2k6V6C3VdJ6ENoxYWf3LSPAiqI8hUWo1IZLAcCmysH6sJTuyiGTVD7t4M6PVuNk4iFgxKpNukDJEAcb0J3KbWF5olqT3b8NVfoYhoQG120IumLulmDNOFHqyjuCRyPDWPlGefk1KIw9FXU2np8wjn2NrjtzEi1wP3KjjnYMqXkXllA3rjrAotYjlJPWdfp1rbCm5T1MnCDlhI2gvFLQmk2ecndEbZaUSC0Fb6dY1lHwoOP3UgdQk4lDtQvIIWXA8gfbExbLEJlLOZr774Mqi5hEfegtnXbnlHK0T1R7QaLtslMqzOa3H5Jg0z5q6dVZMxTYNOf&c=Timothy&c=Marecki&c=&c=&c=&c=&c=&c="
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2128
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 1308
        2⤵
        • Program crash
        PID:1972
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2128 -ip 2128
      1⤵
        PID:1524

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e5a1187.rbs

            • Path C:\Config.Msi\e5a1187.rbs
            • Size 214KB
            • SHA256 392d760e6c5f2c36c9e188659efb147e752f237ddaadcb1d7b2feb64f96786bc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.ClientService.dll
            • Size 92KB
            • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.Core.dll
            • Size 579KB
            • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (ae47296aead93cbc)\system.config
            • Size 954B
            • SHA256 e0b2222b45b787606e90a23072884af36b6a737229b14bc75e5ea59bb9bcf8e3
            • MD5 SHA1 SHA512 TLSH

            57C8EDB95DF3F0AD4EE2DC2B8CFD4157

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

            57C8EDB95DF3F0AD4EE2DC2B8CFD4157

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
            • Size 342B
            • SHA256 8d7f0b63f72f6ef63a1e31b545bf40dd9d6b15e544301dec293eb294bc2d8f8f
            • MD5 SHA1 SHA512 TLSH

            MSIBB96.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSIBB96.tmp
            • Size 1.1MB
            • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIBB96.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIBB96.tmp-\ScreenConnect.Core.dll
            • Size 569KB
            • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIBB96.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIBB96.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSIBE46.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIBE46.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\ae47296aead93cbc\ScreenConnect.ClientSetup.msi
            • Size 9.8MB
            • SHA256 675ad8d089e9810dac5b0f075c750db2186402fd124b6ab8e660a77e6742caad
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI18E9.tmp

            • Path C:\Windows\Installer\MSI18E9.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            gwmhfmyv.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ae47296aead93cbc)\gwmhfmyv.newcfg
            • Size 881B
            • SHA256 c23c97fea24fe462cd1fc0057caaa672d1a59fe3dbf962772c16fcd6bec63573
            • MD5 SHA1 SHA512 TLSH

            ibccafsw.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ae47296aead93cbc)\ibccafsw.newcfg
            • Size 683B
            • SHA256 a9877e24cca76d863c0bce9b78aafbceef5838c14d19288a10c157b9047a76a4
            • MD5 SHA1 SHA512 TLSH

            iqwjoyuv.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ae47296aead93cbc)\iqwjoyuv.newcfg
            • Size 881B
            • SHA256 187b69fd19d2cc01086ebdb18a53f76407726af7127a1bdb9b47e2f222b70f12
            • MD5 SHA1 SHA512 TLSH

            ozakwf0r.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ae47296aead93cbc)\ozakwf0r.newcfg
            • Size 881B
            • SHA256 1850f71cc366b34afb8928da48c19fe35d53d6642710809eb7c66e121f4dc258
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ae47296aead93cbc)\user.config
            • Size 520B
            • SHA256 693dc11f77c7f71d3f3e6df1012ab05be4544031e6b4c3c1d8957d06e09bb60b
            • MD5 SHA1 SHA512 TLSH

            memory/1304-40-0x0000000003480000-0x0000000003514000-memory.dmp

            memory/1304-44-0x0000000005720000-0x00000000058D0000-memory.dmp

            memory/1304-32-0x0000000003310000-0x000000000333E000-memory.dmp

            memory/1304-36-0x0000000003350000-0x000000000335C000-memory.dmp

            memory/3232-74-0x00000000037E0000-0x0000000003808000-memory.dmp

            memory/3568-5-0x0000000075130000-0x00000000758EC000-memory.dmp

            memory/3568-4-0x0000000005EC0000-0x0000000005EE8000-memory.dmp

            memory/3568-10-0x0000000075130000-0x00000000758EC000-memory.dmp

            memory/3568-12-0x0000000075130000-0x00000000758EC000-memory.dmp

            memory/3568-7-0x0000000075130000-0x00000000758EC000-memory.dmp

            memory/3568-1-0x0000000005D70000-0x0000000005D78000-memory.dmp

            memory/3568-3-0x0000000005E20000-0x0000000005EB4000-memory.dmp

            memory/3568-2-0x0000000005D90000-0x0000000005D9C000-memory.dmp

            memory/3568-6-0x0000000005EF0000-0x00000000060A0000-memory.dmp

            memory/3568-8-0x0000000006670000-0x0000000006C2A000-memory.dmp

            memory/3568-0-0x0000000075142000-0x0000000075143000-memory.dmp

            memory/5644-174-0x0000000003C20000-0x0000000003DD0000-memory.dmp

            memory/5644-158-0x0000000003880000-0x000000000389A000-memory.dmp

            memory/5644-207-0x0000000003F50000-0x0000000003FE2000-memory.dmp

            memory/5644-208-0x0000000003DD0000-0x0000000003E11000-memory.dmp

            memory/5644-209-0x0000000004140000-0x0000000004216000-memory.dmp

            memory/5644-189-0x0000000003BC0000-0x0000000003C10000-memory.dmp

            memory/5644-168-0x00000000039D0000-0x0000000003A64000-memory.dmp

            memory/5644-206-0x0000000003E40000-0x0000000003EAC000-memory.dmp

            memory/5712-223-0x0000000002960000-0x00000000029CC000-memory.dmp

            memory/5712-226-0x000000001B960000-0x000000001BB10000-memory.dmp

            memory/5712-227-0x00000000027B0000-0x00000000027CA000-memory.dmp

            memory/5712-228-0x000000001BCA0000-0x000000001BE28000-memory.dmp

            memory/5712-224-0x000000001B4D0000-0x000000001B564000-memory.dmp

            memory/5712-222-0x00000000005D0000-0x000000000067E000-memory.dmp