Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    17/08/2026, 16:19

General

  • Target
    zoomagent.exe
  • Size 76.4MB
  • Sample260817-tssdcsvare
  • SHA256 e890ace347e88b817493580db0a75ad11eecd1c3125638f507596e44d51f40ee
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 64 IoCs

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

  • Drops file in Windows directory 11 IoCs
  • 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.

  • Kills process with taskkill 1 IoCs
  • Modifies registry class 33 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\zoomagent.exe
    "C:\Users\Admin\AppData\Local\Temp\zoomagent.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:5032
    • C:\Windows\SysWOW64\Msiexec.exe
      Msiexec /i "C:\Users\Admin\AppData\Local\Temp\ProductInstaller\Cloud Agent_C64.msi" /q REBOOT="ReallySuppress"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4116
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1588
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 420EAF69960CAC2F26C9483FCB9643CE
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2528
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /IM FWAInstallMonitor.exe /F
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        PID:4660
      • C:\ProgramData\FWAInstallMonitor.exe
        "C:\ProgramData\FWAInstallMonitor.exe" /StartMonitor /CreateStartUpMonitorTask /MsiPath "C:\Users\Admin\AppData\Local\Temp\ProductInstaller\Cloud Agent_C64.msi" /Pid 2528
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1224
  • C:\Users\Admin\AppData\Local\Temp\zoomagent.exe
    "C:\Users\Admin\AppData\Local\Temp\zoomagent.exe" -r
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:900
    • C:\Windows\SysWOW64\Msiexec.exe
      Msiexec /i "C:\Users\Admin\AppData\Local\Temp\ProductInstaller\Cloud Agent_C64.msi" /q REBOOT="ReallySuppress"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      PID:2824

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        CloudAgentCleanupHelper.LOG

        • Path C:\ProgramData\CloudAgentCleanupHelper.LOG
        • Size 20KB
        • SHA256 4c12b4f3e7abc053ef904a98f2b79ab967801c40d14dcd1ea2511eb60a6a273a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSI8a0bf.LOG

        • Path C:\Users\Admin\AppData\Local\Temp\MSI8a0bf.LOG
        • Size 1KB
        • SHA256 ef05da985a29277a17c98b6b7bde7d60c2181aa42391d5ff0e280a79bcf6b47c
        • MD5 SHA1 SHA512 TLSH

        MSI8bcf2.LOG

        • Path C:\Users\Admin\AppData\Local\Temp\MSI8bcf2.LOG
        • Size 2KB
        • SHA256 0dad1f5f843614bd31689502fdae19bdbcecb31a60643e482097a57e605856b9
        • MD5 SHA1 SHA512 TLSH

        Cloud Agent_C64.msi

        • Path C:\Users\Admin\AppData\Local\Temp\ProductInstaller\Cloud Agent_C64.msi
        • Size 9.5MB
        • SHA256 1d5d7e68afc6169714f271f3c34e2e9837c8d65c35972bbfd68e42587aa88e41
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Imaging Client_C64.msi

        • Path C:\Users\Admin\AppData\Local\Temp\ProductInstaller\Imaging Client_C64.msi
        • Size 3.3MB
        • SHA256 d6708d69ce1602228a2886cbd5eee44cb0d125b908ac6a9e46c8e0273944f432
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Software Updater_C64.msi

        • Path C:\Users\Admin\AppData\Local\Temp\ProductInstaller\Software Updater_C64.msi
        • Size 8.6MB
        • SHA256 1be34f84ad22349d92cda0d2968321766454f6d80ed9a660ccccf8cb9a930d0d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Usage Stats_C64.msi

        • Path C:\Users\Admin\AppData\Local\Temp\ProductInstaller\Usage Stats_C64.msi
        • Size 4.4MB
        • SHA256 57ff10c46a1460979f68c58d31604fb00dc627cb6c9e51c6ec22e85148cb69ce
        • MD5 SHA1 SHA512 SSDEEP TLSH

        FWACleanupHelper.exe

        • Path C:\Users\Admin\AppData\Local\Temp\{0D326B4C-1102-4C69-8266-7323C701B45C}\FWACleanupHelper.exe
        • Size 611KB
        • SHA256 ac9df71193bb7ba777584f417b9f5297d6c746b59058c1ccea6ea73ce3649776
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIA459.tmp

        • Path C:\Windows\Installer\MSIA459.tmp
        • Size 57KB
        • SHA256 e1076225eafe4cca82c39a4a7db820e0fd44dd293c9847564346e4bb047214b3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIA8BF.tmp

        • Path C:\Windows\Installer\MSIA8BF.tmp
        • Size 138KB
        • SHA256 69bdcb8dbad5145459bc64ee749e84d9e92171aeff5eea37f2145319c99bdf3e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIA91E.tmp

        • Path C:\Windows\Installer\MSIA91E.tmp
        • Size 1.1MB
        • SHA256 948ac599af61926ae025dd17e12ce7aaf402949b9987faf2cfadd87f591c11c8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Products.ini

        • Path C:\Windows\Products.ini
        • Size 380B
        • SHA256 63c971a11b6aff3bceaed294eea37bd521c2c39fc9a00ad2c918ffc57bd1fb62
        • MD5 SHA1 SHA512 TLSH