Analysis

  • max time kernel
    148s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/11/2026, 12:11

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample261113-pc26eaad75
  • SHA256 4e9f935612a8f60fafd3aff6815e75465b50a51ea6fd81813acb485d04416284
  • 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 16 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 6 IoCs
  • Suspicious use of SendNotifyMessage 4 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:4896
  • 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:1652
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 039CEC547441BF999DD04CC224EAC243 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4868
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3BB7.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240729453 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2576
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4108.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240730406 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:3240
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI47CF.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240732203 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3664
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:6100
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding C112F92C32A91195A418CBBC32AE7303
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3152
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3CA6748703E9991B25C507E28644E8FE E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1540
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5440
    • C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-ghwuiv-relay.screenconnect.com&p=443&s=ab402613-33f7-4b90-a3d6-4f39a6ab69f8&k=BgIAAACkAABSU0ExAAgAAAEAAQDthRgStADE4nkAIOjEw3RohOwqXwivcvDf3vcVGYaZFCWXPdC4%2f7E1xIObDPfFr9xQu9HAh%2b3K2E%2fmIGV7j1JJZpN65Lq262Z2Hfmq162uRF91XJsWVOFPFbbWieceENCqlPA4yaHOotRttTj9Pw1hXs%2fsUHMg3jSI0LRC344B8sKU5t3NbjZjWRAdxcylWoeaKrJr0Ik2hoTjIT0Tjq1yr699Do3q3EPoteIEj0gvDJ07uzklmMR7fGZuSA%2fHW3MNh1gdcRDJysAs2J7LRE9BOACGuo5SohILBIroG5yLd0K3sRWme5RSzgYKW%2fZ9znVlEaqaosQ9%2bTxllUNK1YWu&t=wesley.doc"
      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:6092
      • C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe" "RunRole" "822e15da-bdd2-4591-a0ac-75e08d65c826" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1512
      • C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe" "RunRole" "d3fc2839-0bef-4ac4-8470-89bb525e99df" "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:788

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e599978.rbs

          • Path C:\Config.Msi\e599978.rbs
          • Size 214KB
          • SHA256 f7ec166fc418a67daca3e8376c9afa6d254ecf900f56012a00f44c088deddb0d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\Client.en-US.resources
          • Size 65KB
          • SHA256 bd8901dd3666277f6d7aa1f4118ad53f5d4229c5d9f67f94e635bf2add3731dd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.Client.dll
          • Size 413KB
          • SHA256 fc4fd565a761c1cbc2ca41c52034067768a1f550811a7870f7dd5a4e935adcc2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 b927c1c3ce76613153782b3bee3b4b16499b1dd49abb80403cf9b0fb8eb47d2a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 fc7de50a245b04940fc028a781fa5df6b6bebe0f0e9668cb1318eb9ca9548588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.Core.dll
          • Size 583KB
          • SHA256 dff5b501a73eca3e042364659a5c0e90ee31af633fe20e9242f537e1e57d0fc8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 bd1bd1aba8065866b8f49022be1fc561e980a9b6ef1c438ce761beea034d5160
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe
          • Size 689KB
          • SHA256 6de7ff9bd32ceb79232ed76849225283d46aabd07cbc3bc52ca76912b4d807e4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ea2d2c8354c1ee47e8bae366fcd5afa75455000df9562f3cba366bebf2c2eda6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\system.config
          • Size 958B
          • SHA256 5a39b3927e4635f3e11da15a5b2931d20881d289a926f025d7d05d600538820e
          • MD5 SHA1 SHA512 TLSH

          MSI3BB7.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3BB7.tmp
          • Size 1.1MB
          • SHA256 f751ccdd41a060c1609813602f7d87cf7fcd36743a30ed64c8489ac4e674545d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3BB7.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3BB7.tmp-\ScreenConnect.Core.dll
          • Size 573KB
          • SHA256 27f353041637adcdb1e73ccf895ec1b09bdca8ad392e00e56147a0a724ee345a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3BB7.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 f76e37b09b6b403e1e03cf3f0641866d6e239bdeb4f2cfeadbedc91d65cee0ed
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3BB7.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 a5191e82c924733b8a131d7f479c7b7e11755e3e6e996b325f9c0758c0587f33
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4108.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4108.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 11d45353da749c175b3f31d1ddc0480d83196d5115323da829ae4e693b287380
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIA0BC.tmp

          • Path C:\Windows\Installer\MSIA0BC.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e599979.msi

          • Path C:\Windows\Installer\e599979.msi
          • Size 9.8MB
          • SHA256 4e9f935612a8f60fafd3aff6815e75465b50a51ea6fd81813acb485d04416284
          • MD5 SHA1 SHA512 SSDEEP TLSH

          na2tb5pm.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (83c98c656a2e2ef3)\na2tb5pm.newcfg
          • Size 881B
          • SHA256 a2a59d84e851ebe04a2a596d994bcfd975df5afe42180e1e2c515dddcf96b746
          • MD5 SHA1 SHA512 TLSH

          rva03fmm.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (83c98c656a2e2ef3)\rva03fmm.newcfg
          • Size 683B
          • SHA256 1e2da1ef4f2a25ec71ae27c4ab947af3f9d5668d14a0ad85069c9ae74f801a14
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (83c98c656a2e2ef3)\user.config
          • Size 520B
          • SHA256 6141bdc49a5c144eecff0e501810a911a8467a7b5eaaa83e381c5bdcac699e14
          • MD5 SHA1 SHA512 TLSH

          {0f89f793-4c21-48c3-b903-63e0a5e72973}_OnDiskSnapshotProp

          • Path \??\Volume{24fec12f-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{0f89f793-4c21-48c3-b903-63e0a5e72973}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b0083b1570f12b39cce93b01819838b63b5fd9dd6708c80a916019961f6382e6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1512-209-0x000000001AFA0000-0x000000001B00C000-memory.dmp

          memory/1512-212-0x0000000002460000-0x000000000247A000-memory.dmp

          memory/1512-211-0x000000001B620000-0x000000001B7D0000-memory.dmp

          memory/1512-210-0x000000001B3D0000-0x000000001B466000-memory.dmp

          memory/1512-206-0x0000000000380000-0x0000000000430000-memory.dmp

          memory/1512-213-0x000000001B960000-0x000000001BAE8000-memory.dmp

          memory/2576-25-0x0000000003720000-0x000000000372C000-memory.dmp

          memory/2576-29-0x0000000005870000-0x0000000005906000-memory.dmp

          memory/2576-33-0x0000000005AC0000-0x0000000005C70000-memory.dmp

          memory/2576-21-0x0000000003730000-0x000000000375E000-memory.dmp

          memory/2576-34-0x0000000006230000-0x00000000067EA000-memory.dmp

          memory/3240-64-0x0000000003FE0000-0x0000000004008000-memory.dmp

          memory/6092-184-0x0000000003F60000-0x0000000003FF2000-memory.dmp

          memory/6092-188-0x0000000004150000-0x0000000004226000-memory.dmp

          memory/6092-186-0x0000000003DE0000-0x0000000003E21000-memory.dmp

          memory/6092-183-0x0000000003E50000-0x0000000003EBC000-memory.dmp

          memory/6092-164-0x0000000003BD0000-0x0000000003C20000-memory.dmp

          memory/6092-151-0x0000000003C30000-0x0000000003DE0000-memory.dmp

          memory/6092-147-0x00000000039E0000-0x0000000003A76000-memory.dmp

          memory/6092-141-0x00000000038C0000-0x00000000038DA000-memory.dmp