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ClayRat Spyware Campaign Targets Android Users in Russia

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2 unique sources, 2 articles

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A rapidly evolving Android spyware campaign known as ClayRat continues to target Russian users through Telegram channels and phishing websites. The spyware disguises itself as trusted apps such as WhatsApp, TikTok, Google Photos, and YouTube to trick users into downloading malicious software. Over the past three months, researchers identified more than 600 distinct ClayRat samples and 50 droppers, each version introducing new obfuscation layers to evade security tools. Once installed, the spyware can exfiltrate call logs, SMS messages, and notifications, take photos using the front camera, and send messages or place calls directly from the victim’s phone. The spyware’s operators employ a multifaceted strategy combining impersonation, deception, and automation. Distribution occurs mainly through phishing sites, Telegram channels, step-by-step installation guides, and session-based installers posing as Play Store updates. ClayRat’s most concerning feature is its abuse of Android's default SMS handler role, allowing it to read, store, and send text messages without alerting users. This access is exploited to spread itself further, sending messages to every saved contact. Zimperium's systems detected ClayRat variants as soon as they appeared, before public disclosures. The company shared its findings with Google, helping ensure protection through Google Play Protect. Security experts recommend a layered mobile security posture to reduce installation paths, detect compromise, and limit the blast radius. Users should only install applications from authorized Play/App stores.

Timeline

  1. 09.10.2025 15:30 2 articles · 5h ago

    ClayRat Spyware Campaign Targets Android Users in Russia

    The spyware uses standard HTTP to communicate with its C2 infrastructure. ClayRat can bypass security protections enforced by Google to prevent sideloading of apps on devices running Android 13 and later. The spyware can make phone calls, get device information, take pictures using the device camera, and send a list of all installed applications to the C2 server. ClayRat can act as a dropper, displaying a fake Play Store update screen while hiding the actual encrypted payload within the app's assets.

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