{
  "family": "kingsoft",
  "sample_count": 8,
  "category": "advanced_threat",
  "description": "PUA:Win32/Kingsoft (often associated with **Kingsoft Antivirus** or **WPS Office**) refers to software from the Chinese software developer Kingsoft that is frequently flagged by Western security vendors as a Potentially Unwanted Program (PUA) or Adware. While Kingsoft produces legitimate, functional software, its aggressive bundling tactics, intrusive telemetry collection, and difficult uninstallation processes cause it to be classified as a security and compliance risk in many enterprise environments.<br><br><b>Understanding the Kingsoft Flag</b><br>To an end-user, they may have intentionally downloaded WPS Office as a free alternative to Microsoft Word, or they may have accidentally installed Kingsoft Antivirus bundled with another program. They will likely experience excessive pop-up notifications and performance degradation. For a security analyst, the presence of Kingsoft software often violates corporate Acceptable Use Policies (AUP) due to its aggressive data collection (telemetry) and the risk of supply chain vulnerabilities associated with untrusted, deeply integrated system software.<br><br><b>Execution and PUA Mechanics</b><br>Kingsoft software is frequently distributed via software bundlers (`T1189`) or pre-installed on certain hardware. Upon execution, it integrates deeply into the Windows operating system. Kingsoft Antivirus, by nature, installs kernel-level drivers (`T1543.003`) to monitor system activity. The PUA behavior manifests in its aggressive monetization strategies: it injects advertisements into the desktop environment (`T1562`), aggressively prompts users to install other affiliated software, and forcefully alters default browser settings and file associations (`T1546.001`). Furthermore, the software frequently resists uninstallation, requiring specialized removal tools to strip its persistence mechanisms from the registry.<br><br><b>Indicators of Compromise & Impact</b><br>The impact is primarily a compliance violation, a degraded user experience, and potential privacy risks due to aggressive telemetry exfiltration. IoCs include EDR alerts for the installation of known Kingsoft binaries (e.g., `kxetray.exe`, `wps.exe`) and the creation of Kingsoft-associated Windows Services. Network analysts may observe heavy outbound telemetry traffic directed toward servers located in China.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Kingsoft and what threat category does it belong to?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Kingsoft is classified as a Advanced Threat. Documented across security telemetry, it is engineered to execute unauthorized operations, establish persistent footholds on target endpoints, and facilitate malicious campaigns targeting enterprise and individual environments."
      }
    },
    {
      "@type": "Question",
      "name": "How does Kingsoft establish persistence and evade defensive controls?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Kingsoft typically establishes persistence through registry run keys, scheduled tasks, or service installations, while evading signature-based antivirus solutions through code obfuscation, memory injection, or anti-analysis sandbox checks."
      }
    },
    {
      "@type": "Question",
      "name": "What are the essential incident response steps for mitigating a Kingsoft compromise?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Security teams responding to Kingsoft should immediately isolate affected endpoints from the network, perform memory triage to capture volatile forensic artifacts, audit registry and startup persistence mechanisms, revoke exposed user credentials, and restore systems from verified, clean backups."
      }
    },
    {
      "@type": "Question",
      "name": "What lateral movement and credential access tactics does Kingsoft leverage in enterprise intrusions?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Kingsoft frequently utilizes privileged account harvesting techniques such as LSASS memory dumping, Kerberoasting, and token impersonation to escalate privileges. Once administrative credentials are acquired, it pivots across the victim network utilizing living-off-the-land binaries (LOLBins) such as WMI, PowerShell remoting, and PsExec, or abuses remote desktop protocols (RDP) to reach critical internal repositories and domain controllers."
      }
    },
    {
      "@type": "Question",
      "name": "How does Kingsoft maintain covert communications and evade perimeter network monitoring?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Kingsoft often relies on multi-stage command and control (C2) architectures utilizing encrypted protocols over standard web ports (HTTPS/443 or DNS tunneling) to blend in with legitimate enterprise network traffic. Many variants incorporate proxy networks, domain fronting, or cloud services (such as Microsoft Graph API, Google Drive, or Telegram) to masquerade C2 channels, bypassing traditional signature-based egress filtering."
      }
    }
  ],
  "faq_count": 5,
  "mitre_attack": [
    "T1546.001",
    "T1189",
    "T1543.003"
  ],
  "cisa_advisory": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2024-7262",
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1189",
      "name": "Drive-by Compromise (Bundled Installers)",
      "tactic": "Initial Access"
    },
    {
      "id": "T1543.003",
      "name": "Create or Modify System Process: Windows Service (Installing kernel drivers/watchdogs)",
      "tactic": "Persistence"
    },
    {
      "id": "T1546.001",
      "name": "Event Triggered Execution: Change Default File Association",
      "tactic": "Persistence"
    }
  ],
  "containment_steps": [
    "Use the Windows Control Panel to attempt a standard uninstallation of the Kingsoft software suite.",
    "Deploy an enterprise PUA removal tool or execute a specialized script to locate and strip the deeply embedded registry hooks and kernel drivers left behind by the uninstaller.",
    "Audit the Windows Firewall to remove any 'allow' rules created by the software.",
    "Enforce organizational Application Control (AppLocker or WDAC) to prevent the installation of unapproved software suites like Kingsoft."
  ],
  "what_to_avoid": [
    "Do not assume the software is malicious (like a trojan); it is a PUA, meaning remediation should focus on policy enforcement and cleanup rather than treating it as an active breach.",
    "Avoid ignoring the presence of unapproved antivirus software on a corporate endpoint, as it can conflict with the organization's official EDR solution, causing severe system instability."
  ],
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ],
  "cisa_title": "CISA KEV CVE-2024-7262: Kingsoft WPS Office Path Traversal Vulnerability",
  "cisa_date": "2024-09-03",
  "last_reviewed": "2026-10-13",
  "attack_stage": [
    "execution",
    "persistence"
  ],
  "ecosystem": [
    "windows_pe"
  ],
  "is_emerging": false,
  "target_platforms": [
    "Windows 11",
    "Windows 10",
    "Windows Server 2022",
    "Windows Server 2019"
  ]
}