求助：手机感染顽固恶意病毒（Virus）/木马（Trojan），无法彻底清除

Alright, let’s tackle this nasty Trojan infection you’re dealing with—this sounds like a pretty persistent piece of malware that’s dug its heels into your device. First, let’s recap the key issues you’re facing to make sure we’re aligned, then dive into actionable fixes to get your phone back to normal:

Key Symptoms You’re Seeing #

• Silent background activity & battery drain: The malware runs under the radar, hogging CPU and battery life without you noticing until your phone dies way faster than usual.
• Excessive app permissions: It’s giving regular and system apps way more access than they need—think a calculator app having access to your contacts or location, which is a huge red flag.
• Suspicious shortcut apps: It’s installing fake "system tool" or "update" shortcuts that lead to malicious websites, designed to spread more malware or steal your info.
• Browser hijacking: Your default browser is completely compromised—every site you open is flooded with ads, and those fake "virus warning" pop-ups are just trying to trick you into installing more junk or paying for fake fixes.

Actionable Fixes to Remove the Malware #

Step 1: Boot into Safe Mode #

Most malware can’t operate in Safe Mode because it blocks all third-party apps. Here’s how to do it:

• Android: Hold down the power button until the power menu pops up, then long-press "Power Off" until you see the "Reboot to Safe Mode" option. Tap it, and your phone will restart in this restricted mode.
• iOS: For newer models, hold the side button + volume down until the power slider appears, then hold the side button again until the Apple logo shows up. Alternatively, go to Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings (this won’t delete your data, but will reset permissions and system settings to default).

Step 2: Uninstall Suspicious Apps #

While in Safe Mode, hunt down and remove any apps that look fishy:

• Head to Settings > Apps (or Applications) on Android, or Settings > General > VPN & Device Management on iOS (to check for enterprise apps that might be hiding malware).
• Look for apps you don’t remember installing, apps with generic names like "System Update" or "Security Scanner", or apps that were added around the time your problems started.
• Tap the app, then select "Uninstall" (Android) or "Delete App" (iOS). If you see "Disable" instead for system apps, tap that—it’ll stop the app from running, even if you can’t fully remove it.

Step 3: Revoke Overly Broad Permissions #

Even after uninstalling the main malware, some apps might still have excessive permissions. Fix that:

• On Android: Go to Settings > Privacy > Permission Manager (or Apps > [App Name] > Permissions). For each app, yank any permissions that don’t make sense—like a weather app needing access to your microphone.
• On iOS: Go to Settings > Privacy & Security, then tap each permission type (e.g., Camera, Contacts) to see which apps have access. Toggle off access for any app that doesn’t need it.
• For a quick reset, you can use Settings > System > Reset > Reset App Preferences (Android) to reset all app permissions to default at once.

Step 4: Fully Reset Your Browser #

Your browser is hijacked, so a full reset is non-negotiable:

• Chrome: Go to Settings > Privacy and security > Clear browsing data, select "All time" as the time range, check all boxes, then tap "Clear data". Then head to Settings > Advanced > Reset and clean up > Restore settings to their original defaults.
• Safari (iOS): Go to Settings > Safari > Clear History and Website Data, then tap Advanced > Website Data > Remove All Website Data.
• Other browsers: Look for a "Reset" or "Restore Defaults" option in the browser’s settings—this will wipe out any malicious extensions or hijacked settings.

Step 5: Run a Full Antivirus Scan #

Once you’re out of Safe Mode, grab a trusted mobile antivirus app from the official app store (only use the Google Play Store or Apple App Store to avoid more malware!). Apps like Malwarebytes Mobile or Avast Mobile Security are solid picks. Run a full system scan to catch any leftover malware fragments.

Step 6: Factory Reset (Last Resort) #

If none of the above works, a factory reset will wipe every trace of the malware—but back up your important data first (photos, contacts, etc.) to a cloud service or computer.

• Android: Go to Settings > System > Reset > Factory data reset.
• iOS: Go to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.

内容的提问来源于stack exchange，提问作者Confused Tom