Analysis

  • max time kernel
    148s
  • max time network
    129s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/08/2026, 18:14

General

  • Target
    ScreenConnect.ClientSetup%281%29.msi
  • Size 9.8MB
  • Sample260820-wvnjasfa96
  • SHA256 2601189d533486fa34f2dd70241c3fb6fdd5450c2a4c1c7f59af274acba2705d
  • 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 4 IoCs
  • Loads dropped DLL 50 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
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 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%281%29.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:5032
  • 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:4664
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 418CF328E39FFD6B93D26088A3E80F5D C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1508
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI87D4.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240748781 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1080
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI907F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240750750 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5992
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI98AE.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240752968 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3932
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3232
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 627465AD41CE90347FAD067F36AB4E36
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:716
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 98FD4B25573B8BD4C9809A3F59328DEE E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2800
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5480
    • C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-sla3t9-relay.screenconnect.com&p=443&s=e0386fda-acac-4b5b-8879-803e2db0ed33&k=BgIAAACkAABSU0ExAAgAAAEAAQCVqMmzHQtZSz75KRUTBxWLLbfWECr4rIH3c8efY0VdmKynWshFYNUeegRm8kMb9beM5ndVA0WdHraRmxZzhTabpSxTd96K9liTHqoalnSDiZAt6p08SOiyDN2PwGxOixiEKYerqjy8uDfjnqRkwGngiQA5q998kpHDldGbvATjPgbVTYbs18E1CQxL1CpbbyB6EWSZ9qhx4EgxevHlXh7xyQuXAybTU3RH3xK6ljgbbGk9peb7bhXpWoSmNoJ8YCFPk5Ufo5LDOGUFjDrjE6OjqJMtwMmfBE9tIGYvRMVSfh2S3HqBl70MQot2w04V12ZSiVrQxIe11JIV4J2wdqPp"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1984
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1984 -s 1340
        2⤵
        • Program crash
        PID:3512
    • C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-sla3t9-relay.screenconnect.com&p=443&s=e0386fda-acac-4b5b-8879-803e2db0ed33&k=BgIAAACkAABSU0ExAAgAAAEAAQCVqMmzHQtZSz75KRUTBxWLLbfWECr4rIH3c8efY0VdmKynWshFYNUeegRm8kM%2b9beM5ndVA0WdHraRmxZzhTabpSxTd96K9liTHqoalnSDiZAt6p08SOiyDN2PwGxOixiEKYerqjy8uD%2fjnqRkwGngiQA5q998kpHDldGbvATjPg%2bVTYbs18E1CQxL1Cpb%2byB6EWSZ9qhx4EgxevHlXh7xyQuXAy%2bTU3RH3xK6ljg%2bbGk9pe%2b7%2bhXpWoSmNoJ8YCFPk5Ufo5LDOGUFjDrjE6OjqJMtwMmfBE9tIGYvRMVSfh2S3HqBl70MQot2w04V12ZSiVrQxIe11JIV4J2wdqPp"
      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:4296
      • C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.WindowsClient.exe" "RunRole" "536d5b70-4da0-4674-9a3d-76bf39397b23" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1224
      • C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.WindowsClient.exe" "RunRole" "6a27e382-9208-4f12-9474-711782345995" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1984 -ip 1984
      1⤵
        PID:1040

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59fa07.rbs

            • Path C:\Config.Msi\e59fa07.rbs
            • Size 214KB
            • SHA256 67833c20381574d6e52ec52328b5ea466254eba7b078f9379397b5ef9e8df2e1
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.ClientService.dll
            • Size 92KB
            • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.Core.dll
            • Size 579KB
            • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (058df97371618193)\system.config
            • Size 960B
            • SHA256 ff29bb31f92af28b7439ea9d24f1088534ba5386867f69fcdb435007a9049d54
            • MD5 SHA1 SHA512 TLSH

            MSI87D4.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI87D4.tmp
            • Size 1.1MB
            • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI87D4.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI87D4.tmp-\ScreenConnect.Core.dll
            • Size 569KB
            • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI87D4.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI87D4.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI907F.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI907F.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 137KB
            • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIED.tmp

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

            e59fa06.msi

            • Path C:\Windows\Installer\e59fa06.msi
            • Size 9.8MB
            • SHA256 2601189d533486fa34f2dd70241c3fb6fdd5450c2a4c1c7f59af274acba2705d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ctflxxrc.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (058df97371618193)\ctflxxrc.newcfg
            • Size 683B
            • SHA256 e8a25413acd94dfb0ee6a230cd2c0c7cc6c08ff3b5fd24c4a8ee98615d0f94a9
            • MD5 SHA1 SHA512 TLSH

            qxoe324f.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (058df97371618193)\qxoe324f.newcfg
            • Size 883B
            • SHA256 2905811805b5f85c38f802b2d362ff8838372313fc72595bea396c052b1c146d
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (058df97371618193)\user.config
            • Size 520B
            • SHA256 664ee4d59ceaddf5cd90de2e6f7838db243bf9761190c7fbc1f34cf896726410
            • MD5 SHA1 SHA512 TLSH

            memory/1080-21-0x0000000006080000-0x00000000060AE000-memory.dmp

            memory/1080-33-0x00000000063D0000-0x0000000006580000-memory.dmp

            memory/1080-25-0x00000000060C0000-0x00000000060CC000-memory.dmp

            memory/1080-29-0x0000000006170000-0x0000000006204000-memory.dmp

            memory/1080-34-0x0000000006B40000-0x00000000070FA000-memory.dmp

            memory/1224-212-0x000000001BBC0000-0x000000001BC54000-memory.dmp

            memory/1224-215-0x000000001C0C0000-0x000000001C248000-memory.dmp

            memory/1224-211-0x0000000002C60000-0x0000000002CCC000-memory.dmp

            memory/1224-210-0x0000000000B00000-0x0000000000BAE000-memory.dmp

            memory/1224-214-0x0000000002BD0000-0x0000000002BEA000-memory.dmp

            memory/1224-213-0x000000001BF10000-0x000000001C0C0000-memory.dmp

            memory/1984-142-0x0000000002540000-0x000000000255A000-memory.dmp

            memory/1984-153-0x0000000004B40000-0x0000000004BD4000-memory.dmp

            memory/3932-101-0x0000000005480000-0x0000000005512000-memory.dmp

            memory/4296-174-0x0000000003B90000-0x0000000003BE0000-memory.dmp

            memory/4296-195-0x0000000003BE0000-0x0000000003C21000-memory.dmp

            memory/4296-196-0x0000000004160000-0x0000000004236000-memory.dmp

            memory/4296-193-0x0000000003E60000-0x0000000003ECC000-memory.dmp

            memory/4296-162-0x0000000003C40000-0x0000000003DF0000-memory.dmp

            memory/5992-64-0x0000000005F60000-0x0000000005F88000-memory.dmp