Analysis

  • max time kernel
    148s
  • max time network
    152s
  • 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, 01:15

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260804-bmdc5saf28
  • SHA256 42541eeedc225dc5452a46b891897dbf0d9205d7905927510fa692328745e411
  • 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.

  • 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 2 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 15 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.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 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 8 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:4108
  • 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:4672
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 036D45EAA10980842E613DF055E09DEB C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:240
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6F3B.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240742500 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1516
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI742D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240743500 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4344
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6DF0.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240807484 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5052
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3624
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 08E416590FB2D9C0732E3E2A69933133
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4236
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 36CD7E7DE3E53B98E57C2B1BCF759005 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3412
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5240
    • C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-p75qqx-relay.screenconnect.com&p=443&s=6abb1cff-480c-4522-b008-51d3c3c239a0&k=BgIAAACkAABSU0ExAAgAAAEAAQCZqyClu03RrzWLXrGKEdp%2bzqrijBcyiPCA8RYZkyLQ2x0ZWvCmssXu20x8PURq1PDxvZS4fif20woKjGyBmHKMxIUe%2bmeEpsc3Yk2EjlOJR5cJKStObj5624w%2bkDhT3qGv%2b%2fGCSbuZO8XS8Sy%2f5COmXDxMh%2fjYVp%2fs6OmTPWQyTWvsECFbxvAD0oAKxD8kB8vkQZfqj1FpoYfQmrgzeAz4OVLAvlvU9Kg0mDahbsSKXuCnezhOjTCplE10TnSjtLgXAEXmrA%2f%2fDX%2fNdIf%2bAYJGB7%2bSLTs4VVWiFJvqSdQEd%2bPRtPMczxKUIuNS5S3%2bpCynUHIaJ8SwD%2fVDJz%2fwjpa%2f"
      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:3068
      • C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.WindowsClient.exe" "RunRole" "9c9cc8ff-8e96-4142-be5d-5a4c264488cb" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2704

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5aada7.rbs

          • Path C:\Config.Msi\e5aada7.rbs
          • Size 214KB
          • SHA256 07a27c7601fe856eee176164aa652b66dfde287d16c73658b5b0e38fcef6f6fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.WindowsClient.exe
          • Size 678KB
          • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a8271cfc4fde80e7)\system.config
          • Size 980B
          • SHA256 73e2b8bb8b6f4cae2a0f643b823ace4af45f52656d1d4b19b23633799e598072
          • MD5 SHA1 SHA512 TLSH

          MSI6F3B.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6F3B.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6F3B.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6F3B.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6F3B.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6F3B.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI742D.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI742D.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIB400.tmp

          • Path C:\Windows\Installer\MSIB400.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5aada6.msi

          • Path C:\Windows\Installer\e5aada6.msi
          • Size 9.8MB
          • SHA256 42541eeedc225dc5452a46b891897dbf0d9205d7905927510fa692328745e411
          • MD5 SHA1 SHA512 SSDEEP TLSH

          2ev2rdbg.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a8271cfc4fde80e7)\2ev2rdbg.newcfg
          • Size 683B
          • SHA256 919fbcc7d83cc38d1dd3a25494e6c67f5c9721137e5ea015eea3d82d4eb4bfec
          • MD5 SHA1 SHA512 TLSH

          5ch50tyj.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a8271cfc4fde80e7)\5ch50tyj.newcfg
          • Size 882B
          • SHA256 43720f7a500943e3637d599789c727647e1942d4e580e2e8e302647a49a883f1
          • MD5 SHA1 SHA512 TLSH

          eijib1qr.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a8271cfc4fde80e7)\eijib1qr.newcfg
          • Size 882B
          • SHA256 b89272c0634887920df8b664a9c05edd1d60ce003b8fbc8d8652da23d88650b5
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a8271cfc4fde80e7)\user.config
          • Size 520B
          • SHA256 fc230e37ee0f0692b4936281d9a7613325868731693796fc68bc1d7e5f61c906
          • MD5 SHA1 SHA512 TLSH

          xuyddyza.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a8271cfc4fde80e7)\xuyddyza.newcfg
          • Size 882B
          • SHA256 de90954ffc8b0e21a5fbd75c180c6af1cb802e453d5803fc5556d4f237af1e5f
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 7daef87dc2845f6a67fd1399836cdf4ee74071f83fd16caaf44c96c1fda39064
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {3ce4344c-a69e-47e7-9db5-f65e86208ef5}_OnDiskSnapshotProp

          • Path \??\Volume{c61f3bad-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{3ce4344c-a69e-47e7-9db5-f65e86208ef5}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b9b950ac8f69eb549d3752e6d27fdcbcd74ca1b21ac891880b7a66ec17a4d0f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1516-34-0x00000000064C0000-0x0000000006A7A000-memory.dmp

          memory/1516-33-0x0000000005D50000-0x0000000005F00000-memory.dmp

          memory/1516-29-0x0000000005B00000-0x0000000005B94000-memory.dmp

          memory/1516-25-0x0000000005A50000-0x0000000005A5C000-memory.dmp

          memory/1516-21-0x0000000005A10000-0x0000000005A3E000-memory.dmp

          memory/2704-214-0x0000000002430000-0x000000000249C000-memory.dmp

          memory/2704-216-0x000000001B4B0000-0x000000001B660000-memory.dmp

          memory/2704-213-0x0000000000030000-0x00000000000DE000-memory.dmp

          memory/2704-215-0x000000001B160000-0x000000001B1F4000-memory.dmp

          memory/2704-218-0x000000001C280000-0x000000001C408000-memory.dmp

          memory/2704-217-0x0000000000860000-0x000000000087A000-memory.dmp

          memory/3068-157-0x0000000004020000-0x00000000041D0000-memory.dmp

          memory/3068-190-0x0000000003FA0000-0x000000000400C000-memory.dmp

          memory/3068-145-0x0000000001890000-0x00000000018AA000-memory.dmp

          memory/3068-195-0x0000000004460000-0x0000000004536000-memory.dmp

          memory/3068-159-0x0000000003EE0000-0x0000000003F30000-memory.dmp

          memory/3068-191-0x0000000004270000-0x0000000004302000-memory.dmp

          memory/3068-193-0x0000000003F30000-0x0000000003F71000-memory.dmp

          memory/3068-152-0x0000000003DD0000-0x0000000003E64000-memory.dmp

          memory/3624-221-0x0000013FF3A60000-0x0000013FF3C8D000-memory.dmp

          memory/4344-64-0x0000000005630000-0x0000000005658000-memory.dmp

          memory/4672-111-0x0000020B79320000-0x0000020B7954D000-memory.dmp

          memory/4672-220-0x0000020B79320000-0x0000020B7954D000-memory.dmp

          memory/4672-106-0x0000020B79320000-0x0000020B7954D000-memory.dmp

          memory/4672-240-0x0000020B79320000-0x0000020B7954D000-memory.dmp

          memory/5240-107-0x000002CD072C0000-0x000002CD074ED000-memory.dmp

          memory/5240-187-0x000002CD072C0000-0x000002CD074ED000-memory.dmp