Analysis

  • max time kernel
    148s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/10/2026, 18:11

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 11.9MB
  • Sample261030-ws2cdadz9w
  • SHA256 9ef81e34ee62f322dd442e598ab73b8e0bff360e39117257778ddab6282c5b63
  • 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.

  • 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
  • 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 17 IoCs
  • Drops file in Windows directory 17 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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:5636
  • 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:2456
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 0D483DD47166662D777451FD2FE421EA C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4812
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5F5C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240738390 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5412
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI66CF.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240740078 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        PID:4108
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6D58.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240741890 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1744
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1888
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding BECC7E196BF724ED511771F48B8FC245
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4216
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8FEA6CF876AFA7F89CFBDA71DB7C5523 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1348
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:460
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:1032
      • C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.ClientService.exe
        "C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-b59gsg-relay.screenconnect.com&p=443&s=89eb7ae0-910c-4a7b-951c-c804f834fbb2&k=BgIAAACkAABSU0ExAAgAAAEAAQBVvVM1y%2fsJGKDkH%2fJ50UYXzafOhs5CW83%2bV9tWG9ymejAh0O7iXYEkBtRTPvYmZjmGfC8qo2fqOHtl7qHW0kIRPD4k%2bdkR75fTBuuvR0%2bpD0prSe0FqzJptOmgsPvPyFN4LtYyod3acdmcoZOmQFIHvWKpg1Txp1ltryZq9%2bNHc0LpyvDfU%2bSBKX1x35eaPOpJMraJ2CBTZYtyMz9ZNBmTMeR15mKoUVoX00b3BZng%2bFbXUyKAo91yIJzkFj%2bkmNlcCU9k0bHQhATIFT%2fDqhebL%2f7xjTpoB8qoQ4n88j17bfU2%2b0aRdtmBrrV0jD2q2XCoJb84zuXaOJkcW5j%2bFyzV&c=Sugar%20Family&c=005&c=&c=&c=&c=&c=&c="
        1⤵
        • Sets service image path in registry
        • Drops file in System32 directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2468
        • C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.WindowsClient.exe" "RunRole" "aae513a0-8e42-4504-a1c3-5fe0ef629751" "User"
          2⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:3520
        • C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.WindowsClient.exe" "RunRole" "433992ea-d0fc-405b-96dd-48d75355264e" "System"
          2⤵
          • Executes dropped EXE
          • Reads the TCP/IP host and domain name from the registry
          • Checks processor information in registry
          • Modifies data under HKEY_USERS
          PID:4256

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59c5a9.rbs

            • Path C:\Config.Msi\e59c5a9.rbs
            • Size 214KB
            • SHA256 a5ea5d89ddf9201a41f1bf65c566f1e46051154266fd26a20885553e35b881ea
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\Client.Override.en-US.resources
            • Size 512B
            • SHA256 dab549fed781d4a27c9059d53d81a68bf539268184ba13a547030902ca8210ba
            • MD5 SHA1 SHA512 TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\Client.en-US.resources
            • Size 65KB
            • SHA256 bd8901dd3666277f6d7aa1f4118ad53f5d4229c5d9f67f94e635bf2add3731dd
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\Client.resources
            • Size 6KB
            • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.Client.dll
            • Size 413KB
            • SHA256 be1e3522a20c244b3e20b4f7bc2fc736b6103c930d6cf8366e0bb97cb82d5241
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.ClientService.dll
            • Size 92KB
            • SHA256 67f75a75bc19288cac0071e19e7af4463f2ecf4bb75fe13af80a4f0f57144253
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 bc19602c59b0ba4a7a99f791c87298df76d8d62f86a928e112dca285a88a5a77
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.Core.dll
            • Size 583KB
            • SHA256 91ae86fd5439c7d8a54b75cbb60c2ff9bdff84657b962d340d48cdf656c4928d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 9ddaf17f7f802e58c645d42184e0ac33dc755a885bc3637a7d837a4f6ae5fdea
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.WindowsClient.exe
            • Size 689KB
            • SHA256 24671116eab5a97c5d15c4d7b434adff9ad2119db9b487490f4b251f28167069
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 89fd40ccc2e2be1bf140e748212922aa4010a7ef4b0465aca958c9d3417e0bdd
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (afd8d22013686868)\system.config
            • Size 970B
            • SHA256 b5873f587e08f362171b26cc70827c838f526874e50248cdb3309a71ecafb4e8
            • MD5 SHA1 SHA512 TLSH

            MSI5F5C.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5F5C.tmp
            • Size 1.1MB
            • SHA256 d39e53d74c6840d331b91b9c949db26f7c93a824e9fb104c532346a8c465b6e2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5F5C.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5F5C.tmp-\ScreenConnect.Core.dll
            • Size 573KB
            • SHA256 399ab0c1bcf2bf0c7618066d676b6958c2a5f4fed2d8f769f0eeea5492720e4f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5F5C.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 f35f007dcb154d0346745309630b8cc21fe49638e76dc8dd77a3c62cb0aa754a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5F5C.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 4c281797c351fed77890634006a51bc3a6c60efa4c831fe21934353f304cdf61
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI66CF.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI66CF.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 137KB
            • SHA256 7fcba418fd772a38e420238d49e8301f23caf47eadcef400ecab8738813d9694
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSICCEC.tmp

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

            e59c5aa.msi

            • Path C:\Windows\Installer\e59c5aa.msi
            • Size 11.9MB
            • SHA256 9ef81e34ee62f322dd442e598ab73b8e0bff360e39117257778ddab6282c5b63
            • MD5 SHA1 SHA512 SSDEEP TLSH

            1o4gn5n2.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (afd8d22013686868)\1o4gn5n2.newcfg
            • Size 683B
            • SHA256 19b05f1196f0ba164512b58c83468552da80aad54fab1fd1ea050e793f871601
            • MD5 SHA1 SHA512 TLSH

            p4kfik25.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (afd8d22013686868)\p4kfik25.newcfg
            • Size 883B
            • SHA256 4a781e85e0de320196f7394a08f89f232c7e9c1754b9aedc9df75992686f22f5
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (afd8d22013686868)\user.config
            • Size 520B
            • SHA256 1bb0dab360e0fd9a3ccd1d73e336d4df3ed34b555407b54b7a8c15d876be0371
            • MD5 SHA1 SHA512 TLSH

            memory/2468-187-0x00000000043F0000-0x0000000004482000-memory.dmp

            memory/2468-152-0x00000000040C0000-0x0000000004270000-memory.dmp

            memory/2468-186-0x00000000042E0000-0x000000000434C000-memory.dmp

            memory/2468-148-0x0000000003E70000-0x0000000003F06000-memory.dmp

            memory/2468-189-0x0000000004270000-0x00000000042B1000-memory.dmp

            memory/2468-191-0x00000000045E0000-0x00000000046B6000-memory.dmp

            memory/2468-165-0x0000000004070000-0x00000000040C0000-memory.dmp

            memory/2468-142-0x0000000003D50000-0x0000000003D6A000-memory.dmp

            memory/3520-215-0x000000001C3C0000-0x000000001C548000-memory.dmp

            memory/3520-214-0x0000000001800000-0x000000000181A000-memory.dmp

            memory/3520-213-0x000000001C080000-0x000000001C230000-memory.dmp

            memory/3520-210-0x0000000000DC0000-0x0000000000E70000-memory.dmp

            memory/3520-212-0x000000001BE30000-0x000000001BEC6000-memory.dmp

            memory/3520-211-0x000000001BA80000-0x000000001BAEC000-memory.dmp

            memory/4108-64-0x0000000003A30000-0x0000000003A58000-memory.dmp

            memory/5412-21-0x00000000039C0000-0x00000000039EE000-memory.dmp

            memory/5412-25-0x0000000003A00000-0x0000000003A0C000-memory.dmp

            memory/5412-29-0x0000000005AC0000-0x0000000005B56000-memory.dmp

            memory/5412-33-0x0000000005D10000-0x0000000005EC0000-memory.dmp

            memory/5412-34-0x0000000006480000-0x0000000006A3A000-memory.dmp