Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/09/2026, 00:22

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 16.2MB
  • Sample260924-an7spsxta1
  • SHA256 76588f4a75068cb84b84da3ee273a711a372948dd2ad5344f8b720d2c039a3cd
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 1 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⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:4572
  • 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:1020
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 923C937021ED09F557A85C5B29A3CD46 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4800
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB3D5.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240760078 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4400
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB9F1.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240761390 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3188
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIC06A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240763359 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3416
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3864
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 803536B638D0460C9F7DA8288FA875EC
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1048
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding F563B7B21300495DB75DBBD0EA1904DA E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1036
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5932
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:4716
      • C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.ClientService.exe
        "C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-drf1pk-relay.screenconnect.com&p=443&s=9503b62c-c7d8-47d4-bf32-19f1530b0ac8&k=BgIAAACkAABSU0ExAAgAAAEAAQA50v%2bTrfoqAeWF7zeouMXMHFzF170uJzFnuAMoz4uO8X%2fS4J7mOxjUqYSiZVwV6EQ4V8UVm5rM4gkD91%2fqlf7iVNI5t82EEaMfebEt2As0sH6kDcTjG2BmhY1x6FeX2srDxPbmiACal3ooCJfPHHdV9xNcOEIYjJJ%2fNq8jAEr0bA7tvatBKJKipeHph3XHIvcJREoK3SGQ0A6TpljdDXYw7PSftxun%2f%2fkHImWqjUhDrokGN14FUvTaaWqH5VI92sttq%2bMJg9dD1KpO3FDOrRenXbf1K1L8b51xkkYScjM7taAK%2blGMRm0RFXcekpiSf5g%2f8rqWyWGXhBruZl%2baYJ%2bp&c=rad2r&c=&c=&c=&c=&c=&c=&c="
        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:1056
        • C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.WindowsClient.exe" "RunRole" "8d6a8d53-7192-448d-a0e1-bdfa2266b120" "User"
          2⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:4896
        • C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.WindowsClient.exe" "RunRole" "232a755c-88f7-47e9-a90d-1b496c67b762" "System"
          2⤵
          • Executes dropped EXE
          • Checks processor information in registry
          • Modifies data under HKEY_USERS
          PID:4488

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e5a09a7.rbs

            • Path C:\Config.Msi\e5a09a7.rbs
            • Size 214KB
            • SHA256 d57bbec924c103deb344246c3b012d789571049eb8532c163928327b0f68ee25
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\Client.en-US.resources
            • Size 64KB
            • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\Client.resources
            • Size 6KB
            • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.Client.dll
            • Size 615KB
            • SHA256 787a02b1938e8c1ce52448b8779d2c9c47029664f97185177c2584e8f980abc4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.ClientService.dll
            • Size 176KB
            • SHA256 579fa008b8c96612163fd8a89a978140a652b3739867772df0711fca148705aa
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 d887f20ec383d7ce3a5727856bf7fa68ceb972108b6d0a5dd9924707e820dc24
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.Core.dll
            • Size 1.3MB
            • SHA256 5b2d14e237485c0164d865d8a94f8a8bed28ab0db52c6a7ef99f7ebb9648d324
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.Windows.dll
            • Size 1.9MB
            • SHA256 88dd22f6f0ca70d10c64ca919b0d8b6d73e84c1d567d4b8d15b6e9a9b60d6d8f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.WindowsClient.exe
            • Size 1.6MB
            • SHA256 b7a495f517b9bf23f529552b145121f922ab4915e24b663ae68b3007daea3804
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 239377f4d2345d2a4ff6e3cbebd83c6edb06db4daea389159d19770a2dfcb80c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (e0cd3b65000e58d4)\system.config
            • Size 966B
            • SHA256 66b748d5d125b77b6ab82a53790e2434be518a0f41ee836fd75de213c57d208b
            • MD5 SHA1 SHA512 TLSH

            MSIB3D5.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSIB3D5.tmp
            • Size 1.9MB
            • SHA256 1dabfa60015c186a4315f16d46d9e53435dc259c52843e73dac0d04be92f9a84
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIB3D5.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIB3D5.tmp-\ScreenConnect.Core.dll
            • Size 1.3MB
            • SHA256 e5fd82d18c2dcaadbfc4b72b56573e819cc3e8ee6406f2edb982cc073dc607bb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIB3D5.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 cf8505204b1458dac9cb3002fd5bbd5fac43c5b4702aa0153fb4b9a2cfcf954a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIB3D5.tmp-\ScreenConnect.Windows.dll
            • Size 1.8MB
            • SHA256 ed1b4eb6c24c85392f692bf5863d9ccb76575051bb605360961b9d7624a371c6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSIB9F1.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIB9F1.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 390KB
            • SHA256 c469358d585fa9f1637a02d194e162e454d90b8dc7e4939f88b36e09b04a7a96
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIFF0.tmp

            • Path C:\Windows\Installer\MSIFF0.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e5a09a6.msi

            • Path C:\Windows\Installer\e5a09a6.msi
            • Size 16.2MB
            • SHA256 76588f4a75068cb84b84da3ee273a711a372948dd2ad5344f8b720d2c039a3cd
            • MD5 SHA1 SHA512 SSDEEP TLSH

            rsb22fwh.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e0cd3b65000e58d4)\rsb22fwh.newcfg
            • Size 683B
            • SHA256 e3873766b0a97a917c40aa47a3592f7f2fa42613e29b787a01951052b7704bf5
            • MD5 SHA1 SHA512 TLSH

            sljkyln1.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e0cd3b65000e58d4)\sljkyln1.newcfg
            • Size 883B
            • SHA256 186b19abbe4522ad8bda2fd2d3983d5ca0b25d4963401ef8524a9badc30d6c08
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e0cd3b65000e58d4)\user.config
            • Size 520B
            • SHA256 d0627e168df0d62705e880866fa5abff234f8aae22801963cd318cf709a857d0
            • MD5 SHA1 SHA512 TLSH

            {821a6685-98c3-4ff7-8a8e-d223b3c628dd}_OnDiskSnapshotProp

            • Path \??\Volume{e42a0d43-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{821a6685-98c3-4ff7-8a8e-d223b3c628dd}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 ef33300b455efa1517f6a342da52c00d908693d55e14b590e80f13f0971b4abc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1056-151-0x0000000004D70000-0x0000000004DC0000-memory.dmp

            memory/1056-177-0x0000000004DC0000-0x0000000004E01000-memory.dmp

            memory/1056-173-0x0000000005120000-0x00000000051B2000-memory.dmp

            memory/1056-181-0x0000000005310000-0x00000000053E6000-memory.dmp

            memory/1056-149-0x0000000004E00000-0x0000000004FE0000-memory.dmp

            memory/1056-145-0x0000000004AC0000-0x0000000004C1A000-memory.dmp

            memory/1056-139-0x00000000047E0000-0x0000000004810000-memory.dmp

            memory/1056-170-0x0000000005080000-0x000000000511E000-memory.dmp

            memory/3188-62-0x0000000006080000-0x00000000060E8000-memory.dmp

            memory/4400-27-0x00000000062A0000-0x00000000063FA000-memory.dmp

            memory/4400-31-0x00000000065E0000-0x00000000067C0000-memory.dmp

            memory/4400-32-0x0000000006D80000-0x000000000733A000-memory.dmp

            memory/4400-23-0x00000000060D0000-0x00000000060DC000-memory.dmp

            memory/4400-19-0x0000000006090000-0x00000000060BE000-memory.dmp

            memory/4896-205-0x000000001B380000-0x000000001B41E000-memory.dmp

            memory/4896-208-0x000000001BBC0000-0x000000001BDA0000-memory.dmp

            memory/4896-207-0x000000001B880000-0x000000001B9DA000-memory.dmp

            memory/4896-204-0x0000000000540000-0x00000000006D6000-memory.dmp

            memory/4896-209-0x000000001C9C0000-0x000000001CB48000-memory.dmp

            memory/4896-210-0x0000000002AF0000-0x0000000002B20000-memory.dmp

            memory/4896-211-0x0000000002940000-0x0000000002981000-memory.dmp