{
  "family": "trymedia",
  "sample_count": 25,
  "category": "adware",
  "description": "Trymedia (cataloged in legacy and modern security databases under signatures including Adware:Win32/Trymedia, SoftwareBundler:Win32/Trymedia, and PUA:Win32/Trymedia) is a historic commercial digital rights management (DRM) wrapper and advertising software framework active from 2004 to 2012. Originally created to power 'try-before-you-buy' game demos across popular download portals, Trymedia wrapped playable binaries inside aggressive DRM and ad-delivery stubs. It installed persistent background services (ActiveMARK / SafeDisc helpers), intercepted system startup processes, displayed intrusive commercial purchase prompts, and collected host system hardware telemetry. Because it left active services that resisted uninstallation and created system stability issues, it was classified across major antimalware vendors as a Potentially Unwanted Application (PUA) and adware.",
  "cta": "Published by the SystemHelpdesk Threat Intelligence Team.",
  "aliases": [
    "Adware:Win32/Trymedia",
    "SoftwareBundler:Win32/Trymedia",
    "PUA:Win32/Trymedia",
    "Win32/Trymedia",
    "ActiveMARK Trymedia"
  ],
  "enrichment_level": "curated_sourced",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Adware:Win32/Trymedia?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Trymedia is an aggressive commercial DRM wrapper and adware tool that bundles demo software with intrusive purchase screens."
      }
    },
    {
      "@type": "Question",
      "name": "Why is Trymedia classified as adware or PUA?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Because it installs persistent background services without clear notice, displays nag screens, and resists clean uninstallation."
      }
    },
    {
      "@type": "Question",
      "name": "How was Trymedia distributed?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It was bundled inside downloadable trial games on commercial portals like Yahoo Games, RealArcade, and CNET in the 2000s."
      }
    },
    {
      "@type": "Question",
      "name": "What system changes were made by Trymedia?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It registered background services like ActiveMARK, modified registry shell values, and monitored executable execution times."
      }
    },
    {
      "@type": "Question",
      "name": "How do you remove Trymedia components?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Delete Trymedia and ActiveMARK directories in Program Files and AppData, remove leftover services using sc delete, and scan with Defender."
      }
    }
  ],
  "faq_count": 5,
  "mitre_attack": [
    "T1547.001",
    "T1082",
    "T1071.001",
    "T1112",
    "T1204.002"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-10-15",
  "first_seen": 2004,
  "threat_actor": null,
  "delivery_mechanism": [
    "Commercial Game Demo Portals",
    "Software Bundlers & Download Managers",
    "Shareware Trial Repackagers"
  ],
  "target_platforms": [
    "Windows 7",
    "Windows Vista",
    "Windows XP",
    "Windows 2000"
  ],
  "capabilities": [
    "DRM Executable Wrapping & Trial Enforcement",
    "Persistent Background Service Installation (ActiveMARK)",
    "Commercial Pop-Up & Nag Screen Display",
    "Hardware Fingerprinting & License Validation",
    "Registry Autostart Configuration"
  ],
  "technical_analysis": {
    "file_types": [
      "Win32 PE Executable (Wrapper Stub)",
      "DRM Driver & Service DLL"
    ],
    "network_signatures": [
      "HTTP GET requests to licensing servers checking product activation and license renewal",
      "Periodic telemetry beacons transmitting anonymized system hardware IDs"
    ],
    "evasion_techniques": [
      "Obfuscating DRM wrapper code to prevent reverse-engineering of game trial timers",
      "Installing background services that persist even after uninstalling the main game application"
    ]
  },
  "indicators_of_compromise": {
    "file_hashes": [
      "9cb4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2",
      "adc5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2c3"
    ],
    "registry_keys": [
      "HKLM\\SYSTEM\\CurrentControlSet\\Services\\ActiveMARK",
      "HKCU\\Software\\Trymedia Systems"
    ],
    "file_paths": [
      "%ProgramFiles%\\Trymedia\\ActiveMARK\\activemark.exe",
      "%AppData%\\Trymedia\\licenses.dat"
    ]
  },
  "defensive_measures": [
    "Enable Potentially Unwanted Application (PUA) blocking in Microsoft Defender",
    "Audit running background services for legacy or unrecognized DRM helpers (ActiveMARK, SafeDisc)",
    "Enforce administrative execution controls on demo installers"
  ],
  "sources": [
    {
      "name": "Microsoft Defender Threat Encyclopedia - Adware:Win32/Trymedia",
      "url": "https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=Adware:Win32/Trymedia"
    },
    {
      "name": "Trend Micro Threat Encyclopedia - PUA.Win32.Trymedia",
      "url": "https://www.trendmicro.com/vinfo/us/threat-encyclopedia"
    }
  ],
  "lineage": {
    "derived_from": [],
    "variants": [
      "Adware:Win32/Trymedia.A",
      "PUA:Win32/Trymedia.gen"
    ]
  },
  "motivation": "Commercial DRM Monetization, Adware Prompts & Software Licensing",
  "sample_hashes": []
}