Detecting malware on a smartphone is a critical task for every device owner. Xiaomi and Redmi owners often face the need to check the gadget for hidden threats. Spyware can steal passwords, listen to the microphone and track location.
Today’s threats are far more complex than the simple viruses of the past: they can disguise themselves as system processes or hide their icons from the app menu, and the security of your data depends on the timely detection of anomalies in the MIUI operating system.
In this article, we will look at proven methods for detecting unwanted software: you will learn to analyze system logs and find hidden processes. Hidden access to the camera is the main sign of active surveillance through malware. Be attentive to detail when diagnosing.
Symptoms of infection: how does an infected smartphone behave
The first sign of a problem is often unexplained interface behavior, the screen can spontaneously light up and applications can open without you, which indicates that the background process is actively using the resources of the device.
The dramatic decline in autonomy is another wake-up call, because if the battery runs out in a few hours, even in standby mode, something is constantly running. Spyware requires a constant connection to the server to transmit data.
Notice the heating of the case at rest. When the phone is lying on the table and not in use, it should be cold. A hot case indicates a high load of the processor or modem.
- 📉 Fast battery discharge even in standby mode.
- 🔥 Heating the case without running heavy applications.
- 📡 Unexplained surge in mobile traffic consumption.
- 📱 Advertising in system windows or browser.
⚠️ Warning: If your phone starts to dictate words during a call or the camera turns on on on its own, turn off the internet immediately.
Traffic consumption analysis helps to identify hidden data transfers: Attackers must send the information they have collected somewhere, check the settings for using data in the system.
Analysis of task manager and running processes
Android allows you to view the list of active services. On Xiaomi smartphones, access to this information is somewhat hidden, but quite real. You will need to go to developer mode to get the full picture.
To activate the desired functions go to Settings → Find the line "Version." MIUI" And press it fast. 7-10 The system will tell you that you've become a developer.
Now, the new option, Advanced Settings, will appear in the settings menu, and inside it, select Developer For, and find Working Services or Process Statistics, and it shows the real RAM load.
Look for processes with strange or no icons. Often malware masquerades as system services using similar names. System processes usually have the Android or Xiaomi logo.
If you see a process that consumes a lot of memory, but you haven't run any applications, that's a cause for concern. Click on it to see the details. It may indicate the path to the file or the name of the package.
- 🔍 Look for processes without graphical icons.
- 📝 Pay attention to the strange packet names (a set of random letters).
- ⚡ Track services that consume more than 10% of RAM in the background.
Write down the name of a suspicious process before you try to stop it, which will help you find the appropriate application in the list of installed removal programs.
Checking the list of installed applications and access rights
The easiest way to find a spy is to carefully examine the list of all installed applications. Malware often hides among system utilities or has an empty name. Go to Settings → Apps → All applications.
Look for apps that don't have a name (empty field) or instead of an icon, there's a standard Android robot, and programs with names like System Service, Update Helper, if you haven't installed them, are also suspicious.
☑️ Checking applications
Pay special attention to access rights. Spyware cannot work without permission to access microphone, camera, contacts and geolocation. Go to privacy settings and check which applications have access to the data.
MIUI has a handy tool called "Dispatch." Open it and select "Permissions." See which apps have access to "Outrun." You need to remove any extra programs from there.
| Type of permit | Risk | It's okay for | Suspiciously |
|---|---|---|---|
| Microphone | High-pitched | Dictaphone, messengers | Calculator, flashlight. |
| Camera. | High-pitched | Camera, Instagram | Text editor |
| Text | critical | Messages, Banks. | Games, Wallpaper. |
| Location | Medium. | Maps, Taxi. | Calendar |
If you find a calculator app that requires access to contacts and text messages, it's almost guaranteed to be a virus.
Use of Google Play Protect and Antivirus
Google Play Protect's built-in protection works at the system level and scans apps even outside the Play Market Store. It can detect known malicious code signatures. To run a check, open the Play Market Store, click on the profile avatar and select "Play Protect."
Press the "Check" button, and the system will scan all the apps installed, and if a threat is found, you will be asked to remove it, but new or modified spies can bypass this protection.
Why can’t antiviruses find the virus?
For a deeper scan, you should use specialized scanners. Install a reliable antivirus from a well-known vendor, such as Kaspersky, Dr.Web or Malwarebytes. Run a full scan of the system.
After checking and cleaning, it is better to remove the third-party antivirus so as not to waste battery.Security should be balanced with performance.
⚠️ Warning: Never install antiviruses from unverified sources or from links from SMS. This is the surest way to infect your phone.
Analysis of network traffic and connections
The spyware has to send the data it's collected to the attacker's server, and that creates constant or periodic network traffic, and you can track that by looking at the data indicator.
Turn your phone on in flight mode, then turn off Wi-Fi and leave only the mobile network. Leave your phone for 10-15 minutes without touching the screen. If the data indicator is actively flashing, then the background application is sending something.
For detailed analysis on Xiaomi, you can use built-in tools or third-party apps to monitor traffic. Go to Settings → Connection and Sharing → Traffic Use. Sort applications by volume of data transferred.
- 📊 Compare the amount of traffic to your actual actions.
- 🌐 Pay attention to background data transfer.
- 🚫 Block access to the network suspicious applications.
If you see that the Calculator or Flashlight application has transmitted 50MB of data per night, that's a clear sign of spying. Limit the background data transfer for such programs or delete them.
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Use Traffic Saving mode in your mobile network settings to block background data transfers for all applications except those you select.
Radical measures: system discharge and cleanup
If you find confirmation of a spy but can't delete it (the delete button is inactive or the app returns administrator rights), a reset will be required.This is a last resort, but it guarantees 100% cleanup.
Before resetting, make sure to back up important data (photos, contacts) to your computer or the cloud, but don't copy the applications themselves. When you restore it from a full copy, you can also return the virus.
To perform the reset, go to Settings → About Phone → Settings Reset. Select "Erase All Data." The phone will return to factory status. All programs, including hidden ones, will be destroyed.
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Hard Reset is the only guaranteed way to remove complex spyware that has been embedded in the system.
After reset, take your time to install all the apps at once. Install them on one of the official Google Play Store, which will help you understand which app is causing problems if they resume.