Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/09/2026, 11:15

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 23.1MB
  • Sample260922-nc1rxach93
  • SHA256 89b0e70fe9e1e4e08e2437b144f06fd242e86cec1846388e1faf38892a769eec
  • 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 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 18 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:5596
  • 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:6008
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 3319B1FE044CFEB9C1F12343007BEB2F C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5680
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI798B.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240745140 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5084
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7E4F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240746109 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5924
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI794A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240810359 19 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3424
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2252
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 6412294E65C016C5CA2A3A1B16D1223C
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3116
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A4D38A240EA066056C2B72A5D4F14B51 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2620
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:5756
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:3084
      • C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.exe
        "C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-coavq0-relay.screenconnect.com&p=443&s=98b39b51-e870-4dc9-98e4-b0a9ba7c698f&k=BgIAAACkAABSU0ExAAgAAAEAAQCBO9tPvg5qPurW6qEvp9bUmW9mYzEm7o6yAFHTWSiFpJUPxyd86wxZabgPwagG7A6%2fXKMmY0E1n%2boZQO9a7xuH9q5G2JGTdmiFAM0w%2f7km1A%2b2nB6dNxYxc77fGCOp2OMgPv%2bFuFtWrvzeCyA7RzqeBVPJtzohXZk7kmhY2I01AwWEzFkHCexhIxD9AVRLThFZhImG%2bylaxX9ORTvzfvFaTxVCRnMte9pCKtjtTTw8M6jMBV17r4SXYpS0KUpcksBoo%2bozl1Jcq3eOEh34SUskDA29Qxg%2fF%2fBjBkLmO%2b99bBzOP0S1dWcjhJSaB7nffgZS951U4%2fC1FlYivi4oU2vh&c=Eye%20Clinic&c=&c=Surgery&c=Personal&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:2076
        • C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe" "RunRole" "0c5cf370-9d11-45df-a26a-ecdd6d53688e" "User"
          2⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:4836
        • C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe" "RunRole" "7975b904-af4c-47c6-80c7-01f26402a447" "System"
          2⤵
          • Executes dropped EXE
          • Checks processor information in registry
          • Modifies data under HKEY_USERS
          PID:3660

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e5ab7f8.rbs

            • Path C:\Config.Msi\e5ab7f8.rbs
            • Size 214KB
            • SHA256 756496eb73f69eeaf06c5c4234eecc9227139a36223ab43edd391a4f5697a766
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\Client.Override.en-US.resources
            • Size 256B
            • SHA256 28b9226583d81800feaa9909bd0b0bf8a44bcbd97e66246c1d17162582fd46b3
            • MD5 SHA1 SHA512 TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\Client.en-US.resources
            • Size 64KB
            • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\Client.resources
            • Size 6KB
            • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.Client.dll
            • Size 615KB
            • SHA256 787a02b1938e8c1ce52448b8779d2c9c47029664f97185177c2584e8f980abc4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.dll
            • Size 176KB
            • SHA256 579fa008b8c96612163fd8a89a978140a652b3739867772df0711fca148705aa
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 d887f20ec383d7ce3a5727856bf7fa68ceb972108b6d0a5dd9924707e820dc24
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.Core.dll
            • Size 1.3MB
            • SHA256 5b2d14e237485c0164d865d8a94f8a8bed28ab0db52c6a7ef99f7ebb9648d324
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.Windows.dll
            • Size 1.9MB
            • SHA256 88dd22f6f0ca70d10c64ca919b0d8b6d73e84c1d567d4b8d15b6e9a9b60d6d8f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe
            • Size 1.6MB
            • SHA256 b7a495f517b9bf23f529552b145121f922ab4915e24b663ae68b3007daea3804
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 239377f4d2345d2a4ff6e3cbebd83c6edb06db4daea389159d19770a2dfcb80c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\app.config
            • Size 1KB
            • SHA256 b3369f06d13bca8a10e0870cabd470c48734cd10604ff8a77eb3de17a608f6c4
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\system.config
            • Size 966B
            • SHA256 ed4ff0cac6b33b29810e91bc1cc07f41c37f5ec7eae787f70d9237477dbb8412
            • MD5 SHA1 SHA512 TLSH

            MSI798B.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI798B.tmp
            • Size 1.9MB
            • SHA256 1dabfa60015c186a4315f16d46d9e53435dc259c52843e73dac0d04be92f9a84
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI798B.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI798B.tmp-\ScreenConnect.Core.dll
            • Size 1.3MB
            • SHA256 e5fd82d18c2dcaadbfc4b72b56573e819cc3e8ee6406f2edb982cc073dc607bb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI798B.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 cf8505204b1458dac9cb3002fd5bbd5fac43c5b4702aa0153fb4b9a2cfcf954a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI798B.tmp-\ScreenConnect.Windows.dll
            • Size 1.8MB
            • SHA256 ed1b4eb6c24c85392f692bf5863d9ccb76575051bb605360961b9d7624a371c6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI7E4F.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI7E4F.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 390KB
            • SHA256 c469358d585fa9f1637a02d194e162e454d90b8dc7e4939f88b36e09b04a7a96
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIC016.tmp

            • Path C:\Windows\Installer\MSIC016.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e5ab7f7.msi

            • Path C:\Windows\Installer\e5ab7f7.msi
            • Size 23.1MB
            • SHA256 89b0e70fe9e1e4e08e2437b144f06fd242e86cec1846388e1faf38892a769eec
            • MD5 SHA1 SHA512 SSDEEP TLSH

            1wvitzri.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\1wvitzri.newcfg
            • Size 683B
            • SHA256 5e2081e2dcac13454949600b9199b5715d8024413b656207e1a74e0cd2c52c79
            • MD5 SHA1 SHA512 TLSH

            byfhiyci.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\byfhiyci.newcfg
            • Size 884B
            • SHA256 726ee6678845b4ebcd5fc47929f95381cd4f774e80b96ae62ff861083dc548b9
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\user.config
            • Size 520B
            • SHA256 5750f2579c122d27f36df6c418ee0a4904ab2bd0116b3c9686d06f395f07fafc
            • MD5 SHA1 SHA512 TLSH

            memory/2076-194-0x0000000004480000-0x0000000004556000-memory.dmp

            memory/2076-159-0x0000000003E90000-0x0000000003EE0000-memory.dmp

            memory/2076-189-0x00000000041F0000-0x000000000428E000-memory.dmp

            memory/2076-190-0x0000000004290000-0x0000000004322000-memory.dmp

            memory/2076-152-0x0000000003C30000-0x0000000003D8A000-memory.dmp

            memory/2076-192-0x0000000003EE0000-0x0000000003F21000-memory.dmp

            memory/2076-156-0x0000000003F70000-0x0000000004150000-memory.dmp

            memory/2076-146-0x0000000001360000-0x0000000001390000-memory.dmp

            memory/3660-220-0x00000000019C0000-0x0000000001A01000-memory.dmp

            memory/4836-217-0x000000001BA60000-0x000000001BC40000-memory.dmp

            memory/4836-215-0x00000000029D0000-0x0000000002A6E000-memory.dmp

            memory/4836-216-0x000000001B720000-0x000000001B87A000-memory.dmp

            memory/4836-214-0x0000000000400000-0x0000000000596000-memory.dmp

            memory/4836-218-0x000000001BC40000-0x000000001BDC8000-memory.dmp

            memory/4836-219-0x000000001B360000-0x000000001B390000-memory.dmp

            memory/5084-29-0x0000000006240000-0x000000000639A000-memory.dmp

            memory/5084-33-0x0000000006580000-0x0000000006760000-memory.dmp

            memory/5084-25-0x0000000004060000-0x000000000406C000-memory.dmp

            memory/5084-21-0x0000000004010000-0x000000000403E000-memory.dmp

            memory/5084-34-0x0000000006D20000-0x00000000072DA000-memory.dmp

            memory/5924-64-0x0000000005220000-0x0000000005288000-memory.dmp