Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/07/2026, 23:15

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260722-28ndcasvbx
  • SHA256 50a8e2671f37ae9e4e8be32e082348caefac168668cc37605e34bb2947b116a9
  • 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 21 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 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 19 IoCs
  • Suspicious use of SendNotifyMessage 17 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:1588
  • 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:2924
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 0546B0F6936C0A16A5EA1162D41F684A C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2384
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5049.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240734515 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2724
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI55E7.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240735859 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4220
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5C61.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240737640 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1340
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1256
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 59921F647E9EDA8C200324169E867B48
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4544
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 65E32CC9EC2BA5A50E22EEB0A61D7486 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4312
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5576
    • C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-ujpohk-relay.screenconnect.com&p=443&s=43608bbe-30cc-4fc7-acb0-dcd8976d5a2a&k=BgIAAACkAABSU0ExAAgAAAEAAQDF8r0fLD9z0AorbqML7i1LThZ4O8M6J8C3InwTJPu5Ln2C10PkTAzPfzdcCzeWljqP6PmkPm9qneQMD0RfAHqQ91f6s6qvhHw9h5AtO4fYZIbI7bAXbbtFpbBLyfdobW1Mt0B3MDvR3ymRIgQBMTx2fwTwPMhU6apaIhGqmdfwEqflxxbsmGNuOftNh8ZKkgAju2CX5K31ysmxYsNKPbzZKXyOga798DKodXbxsAUOrETZvDXEZfAiqBxnjmNdxXbUhlf9QHGkof4NAUUiMHNFesfb3bvQi5j7p82echm98oRPVDP1Ga1Yix8Fuv4JrfuL4PKtPODvTHHECVuWlRPT&c=ato&c=ATO0GO&c=&c=&c=&c=&c=&c="
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:4984
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 1340
        2⤵
        • Program crash
        PID:1320
    • C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-ujpohk-relay.screenconnect.com&p=443&s=43608bbe-30cc-4fc7-acb0-dcd8976d5a2a&k=BgIAAACkAABSU0ExAAgAAAEAAQDF8r0%2fLD9z0Aor%2bqML7i1LThZ4O8M6J8C3InwTJPu5Ln2C10PkTAzP%2fzdcCzeWljqP6PmkPm9qneQMD0R%2fAHqQ91%2f6s6qvhHw9h5AtO4fYZI%2bI7bAXb%2btFpbBLy%2fdobW1Mt0B3MDvR3ymRIgQBMTx2fwTwPMhU6apaIhGqmd%2fwEqflxxbsmGNuO%2ftNh8ZKkgAju2CX5K31ysmxYsNKPbzZKXyOga798DKodX%2bxsAUOrETZvDXEZfAiqBxnjmNdxXbUhlf9QHGko%2f4NAUUiMHNFesf%2b3bvQi5j7p82echm98oRPVDP1Ga1Yix8Fuv4JrfuL4PKtPODvTHHECVuWlRPT&c=ato&c=ATO%20GO&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:5580
      • C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.WindowsClient.exe" "RunRole" "66bfe92d-7f95-4ef8-8fcf-e2688bd05c18" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2540
      • C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.WindowsClient.exe" "RunRole" "019bd4e1-42dc-41f8-9055-0bf35cf6c9f3" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4620
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4984 -ip 4984
      1⤵
        PID:3720

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59a158.rbs

            • Path C:\Config.Msi\e59a158.rbs
            • Size 214KB
            • SHA256 03ae91649fc5b30787bec4039afd7eb93ed6abe7bd20ad2e30e1878f10d831c0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.ClientService.dll
            • Size 91KB
            • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.Core.dll
            • Size 577KB
            • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (2d061b84bcbdb211)\system.config
            • Size 970B
            • SHA256 c8888f572582139b1434312341fd1f974d9666f10bd9939553c6f306d1b31074
            • MD5 SHA1 SHA512 TLSH

            MSI5049.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5049.tmp
            • Size 1.1MB
            • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5049.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5049.tmp-\ScreenConnect.Core.dll
            • Size 567KB
            • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5049.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI5049.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI55E7.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI55E7.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 137KB
            • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIA734.tmp

            • Path C:\Windows\Installer\MSIA734.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e59a157.msi

            • Path C:\Windows\Installer\e59a157.msi
            • Size 9.8MB
            • SHA256 50a8e2671f37ae9e4e8be32e082348caefac168668cc37605e34bb2947b116a9
            • MD5 SHA1 SHA512 SSDEEP TLSH

            1nkr4emv.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2d061b84bcbdb211)\1nkr4emv.newcfg
            • Size 884B
            • SHA256 ba2a692f7d84d18719eb1b943a3df2ea8b96fee77fe9ee543b75f574c02681ab
            • MD5 SHA1 SHA512 TLSH

            bgzmv3qe.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2d061b84bcbdb211)\bgzmv3qe.newcfg
            • Size 883B
            • SHA256 479c2b5538d8115e3df1343d9e641026011714d49924f2f1b870783c90f7254b
            • MD5 SHA1 SHA512 TLSH

            c0110kda.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2d061b84bcbdb211)\c0110kda.newcfg
            • Size 884B
            • SHA256 a09bbd6b488434e1bb8ef49f0273e1cda6a96e8b27194500c6444ced82afb332
            • MD5 SHA1 SHA512 TLSH

            pbf0son5.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2d061b84bcbdb211)\pbf0son5.newcfg
            • Size 884B
            • SHA256 6157695ee490b7fce07146e63f0767f05194a51f83e45c83e295896edff789a1
            • MD5 SHA1 SHA512 TLSH

            sn30jqvj.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2d061b84bcbdb211)\sn30jqvj.newcfg
            • Size 884B
            • SHA256 974be3ec01cc0031fa3e669f6fe1d2b64b0500fc01bcd63f2ec3f6aaf84cf103
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2d061b84bcbdb211)\user.config
            • Size 520B
            • SHA256 b0321654f2e0940c7293ce0d8c0fc1f2c28a89446899f194b43e78d41f25eab9
            • MD5 SHA1 SHA512 TLSH

            v0umvffi.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2d061b84bcbdb211)\v0umvffi.newcfg
            • Size 683B
            • SHA256 a12458ecbb24496eb660c41f3d075b937f5522130bf037744971a0fedeeea059
            • MD5 SHA1 SHA512 TLSH

            memory/2540-212-0x0000000000940000-0x00000000009EE000-memory.dmp

            memory/2540-217-0x000000001CB40000-0x000000001CCC8000-memory.dmp

            memory/2540-216-0x0000000002B30000-0x0000000002B4A000-memory.dmp

            memory/2540-215-0x000000001BBE0000-0x000000001BD90000-memory.dmp

            memory/2540-214-0x000000001B990000-0x000000001BA24000-memory.dmp

            memory/2540-213-0x000000001B620000-0x000000001B68C000-memory.dmp

            memory/2724-34-0x0000000006710000-0x0000000006CCA000-memory.dmp

            memory/2724-33-0x0000000005FA0000-0x0000000006150000-memory.dmp

            memory/2724-29-0x0000000003CC0000-0x0000000003D54000-memory.dmp

            memory/2724-25-0x0000000003C10000-0x0000000003C1C000-memory.dmp

            memory/2724-21-0x0000000002E70000-0x0000000002E9E000-memory.dmp

            memory/4220-64-0x00000000033D0000-0x00000000033F8000-memory.dmp

            memory/4984-152-0x00000000055D0000-0x0000000005664000-memory.dmp

            memory/4984-141-0x0000000002F40000-0x0000000002F5A000-memory.dmp

            memory/5580-198-0x0000000004D80000-0x0000000004E56000-memory.dmp

            memory/5580-195-0x0000000004B90000-0x0000000004C22000-memory.dmp

            memory/5580-197-0x00000000048A0000-0x00000000048E1000-memory.dmp

            memory/5580-193-0x0000000004B20000-0x0000000004B8C000-memory.dmp

            memory/5580-162-0x0000000004850000-0x00000000048A0000-memory.dmp

            memory/5580-158-0x0000000004970000-0x0000000004B20000-memory.dmp