Analysis

  • max time kernel
    148s
  • max time network
    136s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/10/2026, 11:27

General

  • Target
    ScreenConnect.ClientSetup (3).msi
  • Size 9.8MB
  • Sample261002-nkr5qstsbv
  • SHA256 d9d546dbc109b897ea3d6831fb74da31d7008088fe0c15c3171fd6276d22fece
  • 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 2 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates connected drives 3 TTPs 47 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 6 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 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.

  • 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 20 IoCs
  • Suspicious use of SendNotifyMessage 18 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 (3).msi"
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:2852
  • 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:836
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 049468BA1AEAA0446D052C277DDC3674 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2880
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI599F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240737015 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4664
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5F9C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240738265 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:252
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI65B7.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240739812 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5056
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5348
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding AF5FAE1D53EB28A452CBEEF69684CAC0
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2112
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3CC8029C7504530C652B68E94B1423EE E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5476
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1796
    • C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-h8l6ah-relay.screenconnect.com&p=443&s=6a5b4926-3256-4141-91e9-360c2c5fa4da&k=BgIAAACkAABSU0ExAAgAAAEAAQBBn6wUQb6JePU%2fovT79jdTn%2bWF%2b34zRl6Paz0cmIHRm3utoLz02ZSklkIxMBek2HAN0di6IuSOYlnKXyS9Pgi%2bnbNLLNK7AQa8ZuKFjBque3cU5Lb1rgZcJ3g3NqB7v8fODII3cO4eEGBO%2bTMiwFIoHx2NCb0k07brQbuGiiIUFxN6zrCRzn%2bhrI2NZYpbZMs0B0o7cwEfQiZi3AxNAk%2fHjCGvIzd7RPDC%2bltdpz7E3btBgRwjIqclZ2xydpaw8LHvdDjC9ypNtf9JPNaTFCPLdJ72paLQ2kvSjU%2bBzC6wS3h7RKVcRalgGjyEjXz6FqwRS%2fY%2btO4xjrb4H%2fQYQHbn&c=AHMED3&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
      • 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:4828
      • C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.WindowsClient.exe" "RunRole" "60af5172-ed9c-45bb-bdcc-cd9697eb77a4" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4312

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59c1c1.rbs

          • Path C:\Config.Msi\e59c1c1.rbs
          • Size 214KB
          • SHA256 d2775633700f452f53a8acd340e83d68ff1a04173363af0aa3a4bd0bef389809
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.WindowsClient.exe
          • Size 676KB
          • SHA256 f49ca44ae19ec33053d76aeca7136193095b6583888a0be063b8120c3c9226c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (fc869f2339aa8206)\system.config
          • Size 968B
          • SHA256 6b9ccc5d9544adfd0108dc1369d838fb25578c80aebe4528808770a525447d79
          • MD5 SHA1 SHA512 TLSH

          MSI599F.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI599F.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI599F.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI599F.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI599F.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI599F.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5F9C.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5F9C.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIC849.tmp

          • Path C:\Windows\Installer\MSIC849.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59c1c2.msi

          • Path C:\Windows\Installer\e59c1c2.msi
          • Size 9.8MB
          • SHA256 d9d546dbc109b897ea3d6831fb74da31d7008088fe0c15c3171fd6276d22fece
          • MD5 SHA1 SHA512 SSDEEP TLSH

          4d4kcgd1.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (fc869f2339aa8206)\4d4kcgd1.newcfg
          • Size 683B
          • SHA256 f2abc712153dee346da35b86e3cb108f27b54a4b9e0ada393c0b6ffa74d42cad
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (fc869f2339aa8206)\user.config
          • Size 520B
          • SHA256 7aa7917fccc332bd622c6b6077b39656240e38240bbcf25e40e4acad58086321
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 72c6d20ad58879b382801dcb5927167ecf96802a2172bbdfcda04258cc95f539
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {434f2c86-6fbb-438d-bd77-0d284cb44748}_OnDiskSnapshotProp

          • Path \??\Volume{e35bb194-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{434f2c86-6fbb-438d-bd77-0d284cb44748}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 586d6c4f3d830e4e873841ad4fef8dd5295566735db959557a063e55ef0ea6bd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/252-64-0x00000000035A0000-0x00000000035C8000-memory.dmp

          memory/836-144-0x000002996EDB0000-0x000002996F754000-memory.dmp

          memory/4312-198-0x000000001B830000-0x000000001B9E0000-memory.dmp

          memory/4312-195-0x00000000004D0000-0x000000000057E000-memory.dmp

          memory/4312-200-0x000000001BB70000-0x000000001BCF8000-memory.dmp

          memory/4312-199-0x00000000027A0000-0x00000000027BA000-memory.dmp

          memory/4312-197-0x000000001B5E0000-0x000000001B674000-memory.dmp

          memory/4312-196-0x0000000002A00000-0x0000000002A6C000-memory.dmp

          memory/4664-29-0x0000000005500000-0x0000000005594000-memory.dmp

          memory/4664-34-0x0000000006010000-0x00000000065CA000-memory.dmp

          memory/4664-33-0x00000000058A0000-0x0000000005A50000-memory.dmp

          memory/4664-25-0x0000000003350000-0x000000000335C000-memory.dmp

          memory/4664-21-0x0000000003370000-0x000000000339E000-memory.dmp

          memory/4828-141-0x0000000001DC0000-0x0000000001DDA000-memory.dmp

          memory/4828-184-0x0000000004700000-0x000000000476C000-memory.dmp

          memory/4828-148-0x00000000045A0000-0x0000000004634000-memory.dmp

          memory/4828-189-0x0000000004C30000-0x0000000004D06000-memory.dmp

          memory/4828-187-0x0000000004690000-0x00000000046D1000-memory.dmp

          memory/4828-162-0x00000000047F0000-0x00000000049A0000-memory.dmp

          memory/4828-165-0x0000000004640000-0x0000000004690000-memory.dmp

          memory/4828-185-0x0000000004A40000-0x0000000004AD2000-memory.dmp