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How to remove the AndroRAT malware from your mobile device?

Also Known As: AndroRAT remote access trojan
Type: Trojan
Distribution: Moderate
Damage level: Severe

AndroRAT malware removal guide

What is AndroRAT?

AndroRAT is the name of a malicious program targeting Android operating systems on smartphones. It is classified as a Remote Access Trojan (RAT). Malware of this type is designed to enable stealthy remote access and control over an infected device. These trojans can have a wide variety of heinous functionalities, which can be used in various ways. Therefore, the threats posed by RAT infections are especially broad. AndroRAT is deemed to be a highly dangerous piece of software, and as such - its infections must be removed immediately upon detection.

Following successful infiltration, AndroRAT begins its operation by gathering information about the infected device. The collected data includes: SIM card operator, SIM card serial number, SIM card country, phone number, IMEI (International Mobile Equipment Identity), and so on. The trojan can also exfiltrate more advanced information relating to the mobile phone - its Wi-Fi networks, the device battery's status, and current GPS location. Additionally, this malware can monitor content stored on the phone, and it can upload files. The latter could be used to potentially infect the system with additional malicious programs, such as ransomware, trojans, cryptocurrency miners, etc. Furthermore, RATs can give commands to the compromised device, which allows them a certain level of control over it. Typically, remote access trojans that target mobile devices are capable of using them to make phone calls and send SMSes. To summarize, AndroRAT infections can lead to severe privacy issues, financial losses, and identity theft. If it is suspected or known that AndroRAT (or other malware) has already infected the system - an anti-virus must be used to eliminate it without delay.

AndroRAT malware detections on VirusTotal

Threat Summary:
Name AndroRAT remote access trojan
Threat Type Android malware, malicious application, unwanted application.
Detection Names Avast (Android:Agent-QUO [Trj]), DrWeb (Android.Spy.178.origin), ESET-NOD32 (A Variant Of Android/Spy.Kasandra.A), Kaspersky (HEUR:Trojan-Spy.AndroidOS.Sandr.e), Full List (VirusTotal)
Symptoms The device is running slow, system settings are modified without user's permission, questionable applications appear, data and battery usage is increased significantly, browsers redirect to questionable websites, intrusive advertisements are delivered.
Distribution methods Infected email attachments, malicious online advertisements, social engineering, deceptive applications, scam websites.
Damage Stolen personal information (private messages, logins/passwords, etc.), decreased device performance, battery is drained quickly, decreased Internet speed, huge data losses, monetary losses, stolen identity (malicious apps might abuse communication apps).
Malware Removal (Android) To eliminate malware infections our security researchers recommend scanning your Android device with legitimate anti-malware software. We recommend Avast, Bitdefender, ESET or Malwarebytes.

BlackRockFluBotBasbankeOscorp, and Joker are some examples of Android-targeting malware. Malicious programs can have a broad range of malicious features, and these functions can be in different combinations. Common abilities include: enabling remote access and control over the infected system, data encryption and/or screen locking for ransom purposes (ransomware), installation of additional malware, stored content and information exfiltration, data extraction from browsers and other installed applications, use of system resources to mine cryptocurrency (cryptominers), audio/video recording, keylogging (recording of key-strokes), and so on. Regardless of how malicious software operates, its sole goal is to generate revenue for the cyber criminals. System infections must be removed immediately to ensure device and user safety.

How did AndroRAT infiltrate my device?

Malware is commonly distributed via spam campaigns - large-scale operations during which thousands of deceptive/scam emails are sent. These letters are usually presented as "official", "important", "urgent", and similar. The emails have virulent files attached to and/or linked inside them. Infectious files can be in various formats, e.g., archives, executables, PDF and Microsoft Office documents, JavaScript, etc. When malicious files are executed, run, or otherwise opened - the infection chain (malware download/installation) is triggered.

Malicious programs are often disguised as or packed together with ordinary software/media, and then proliferated through dubious download channels (e.g., unofficial and free file-hosting websites, Peer-to-Peer sharing networks, and other third-party downloaders). Illegal activation ("cracking") tools and illegitimate updaters are prime examples of malware-spreading content obtained from untrustworthy sources. "Cracks" can cause infections rather than activate licensed products. Fake updaters infect systems by exploiting weaknesses of outdated programs and/or installing malicious software instead of the promised updates.

How to avoid installation of malware?

To avoid infecting the device via spam mail, it is advised against opening suspicious and irrelevant emails - especially any attachments or links found in them. It is recommended to only perform downloads from official and verified sources. Additionally, all programs have to be activated and updated with tools/functions provided by legitimate developers. To protect device integrity and user privacy, it is paramount to have a dependable anti-virus/anti-spyware suite installed and updated. This software has to be used to run regular system scans and remove detected/potential threats.

Quick menu:

Delete browsing history from the Chrome web browser:

Deleting web browsing history from Chrome in Android operating system (step 1)

Tap the "Menu" button (three dots on the right-upper corner of the screen) and select "History" in the opened dropdown menu.

Deleting web browsing history from Chrome in Android operating system (step 2)

Tap "Clear browsing data", select "ADVANCED" tab, choose the time range and data types you want to delete and tap "Clear data".

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Disable browser notifications in the Chrome web browser:

Disabling browser notifications in the Chrome browser in Android operating system (step 1)

Tap the "Menu" button (three dots on the right-upper corner of the screen) and select "Settings" in the opened dropdown menu.

Disabling browser notifications in the Chrome browser in Android operating system (step 2)

Scroll down until you see "Site settings" option and tap it. Scroll down until you see "Notifications" option and tap it.

Disabling browser notifications in the Chrome browser in Android operating system (step 3)

Find the websites that deliver browser notifications, tap on them and click "Clear & reset". This will remove permissions granted for these websites to deliver notifications. However, once you visit the same site again, it may ask for a permission again. You can choose whether to give these permissions or not (if you choose to decline the website will go to "Blocked" section and will no longer ask you for the permission).

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Reset the Chrome web browser:

Resetting Chrome browser to default in Android operating system (step 1)

Go to "Settings", scroll down until you see "Apps" and tap it.

Resetting Chrome browser to default in Android operating system (step 2)

Scroll down until you find "Chrome" application, select it and tap "Storage" option.

Resetting Chrome browser to default in Android operating system (step 3)

Tap "MANAGE STORAGE", then "CLEAR ALL DATA" and confirm the action by taping "OK". Note that resetting the browser will eliminate all data stored within. This means that all saved logins/passwords, browsing history, non-default settings and other data will be deleted. You will also have to re-login into all websites as well.

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Delete browsing history from the Firefox web browser:

Delete browsing history from the Firefox in the Android operating system (step 1)

Tap the "Menu" button (three dots on the right-upper corner of the screen) and select "History" in the opened dropdown menu.

Delete browsing history from the Firefox in the Android operating system (step 2)

Scroll down until you see "Clear private data" and tap it. Select data types you want to remove and tap "CLEAR DATA".

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Disable browser notifications in the Firefox web browser:

Disable browser notifications in the Firefox web browser in the Android operating system (step 1)

Visit the website that is delivering browser notifications, tap the icon displayed on the left of URL bar (the icon will not necessarily be a "Lock") and select "Edit Site Settings".

Disable browser notifications in the Firefox web browser in the Android operating system (step 2)

In the opened pop-up opt-in the "Notifications" option and tap "CLEAR".

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Reset the Firefox web browser:

Resetting Firefox browser in the Android operating system (step 1)

Go to "Settings", scroll down until you see "Apps" and tap it.

Resetting Firefox browser in the Android operating system (step 2)

Scroll down until you find "Firefox" application, select it and tap "Storage" option.

Resetting Firefox browser in the Android operating system (step 3)

Tap "CLEAR DATA" and confirm the action by taping "DELETE". Note that resetting the browser will eliminate all data stored within. This means that all saved logins/passwords, browsing history, non-default settings and other data will be deleted. You will also have to re-login into all websites as well.

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Uninstall potentially unwanted and/or malicious applications:

Removing unwanted/malicious applications from the Android operating system (step 1)

Go to "Settings", scroll down until you see "Apps" and tap it.

Removing unwanted/malicious applications from the Android operating system (step 2)

Scroll down until you see a potentially unwanted and/or malicious application, select it and tap "Uninstall". If, for some reason, you are unable to remove the selected app (e.g., you are prompted with an error message), you should try using the "Safe Mode".

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Boot the Android device in "Safe Mode":

The "Safe Mode" in Android operating system temporarily disables all third-party applications from running. Using this mode is a good way to diagnose and solve various issues (e.g., remove malicious applications that prevent users you from doing so when the device is running "normally").

Booting Android device in Safe Mode

Push the "Power" button and hold it until you see the "Power off" screen. Tap the "Power off" icon and hold it. After a few seconds the "Safe Mode" option will appear and you'll be able run it by restarting the device.

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Check the battery usage of various applications:

Checking the battery usage of various applications in the Android operating system (step 1)

Go to "Settings", scroll down until you see "Device maintenance" and tap it.

Checking the battery usage of various applications in the Android operating system (step 2)

Tap "Battery" and check the usage of each application. Legitimate/genuine applications are designed to use as low energy as possible in order to provide the best user experience and to save power. Therefore, high battery usage may indicate that the application is malicious.

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Check the data usage of various applications:

Checking data usage of various applications in the Android operating system (step 1)

Go to "Settings", scroll down until you see "Connections" and tap it.

Checking data usage of various applications in the Android operating system (step 2)

Scroll down until you see "Data usage" and select this option. As with battery, legitimate/genuine applications are designed to minimize data usage as much as possible. This means that huge data usage may indicate presence of malicious application. Note that some malicious applications might be designed to operate when the device is connected to wireless network only. For this reason, you should check both Mobile and Wi-Fi data usage.

Checking data usage of various applications in the Android operating system (step 3)

If you find an application that uses a lot of data even though you never use it, then we strongly advise you to uninstall it as soon as possible.

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Install the latest software updates:

Keeping the software up-to-date is a good practice when it comes to device safety. The device manufacturers are continually releasing various security patches and Android updates in order to fix errors and bugs that can be abused by cyber criminals. An outdated system is way more vulnerable, which is why you should always be sure that your device's software is up-to-date.

Installing software updates in the Android operating system (step 1)

Go to "Settings", scroll down until you see "Software update" and tap it.

Installing software updates in the Android operating system (step 2)

Tap "Download updates manually" and check if there are any updates available. If so, install them immediately. We also recommend to enable the "Download updates automatically" option - it will enable the system to notify you once an update is released and/or install it automatically.

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Reset the system to its default state:

Performing a "Factory Reset" is a good way to remove all unwanted applications, restore system's settings to default and clean the device in general. However, you must keep in mind that all data within the device will be deleted, including photos, video/audio files, phone numbers (stored within the device, not the SIM card), SMS messages, and so forth. In other words, the device will be restored to its primal state.

You can also restore the basic system settings and/or simply network settings as well.

Resetting the Android operating system to its default (step 1)

Go to "Settings", scroll down until you see "About phone" and tap it.

Resetting the Android operating system to its default (step 2)

Scroll down until you see "Reset" and tap it. Now choose the action you want to perform:
"Reset settings" - restore all system settings to default;
"Reset network settings" - restore all network-related settings to default;
"Factory data reset" - reset the entire system and completely delete all stored data;

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Disable applications that have administrator privileges:

If a malicious application gets administrator-level privileges it can seriously damage the system. To keep the device as safe as possible you should always check what apps have such privileges and disable the ones that shouldn't.

Disabling Android applications that have administrator privileges (step 1)

Go to "Settings", scroll down until you see "Lock screen and security" and tap it.

Disabling Android applications that have administrator privileges (step 2)

Scroll down until you see "Other security settings", tap it and then tap "Device admin apps".

Disabling Android applications that have administrator privileges (step 3)

Identify applications that should not have administrator privileges, tap them and then tap "DEACTIVATE".

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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