How to remove Oscorp malware from your Android device?

Also Known As: Oscorp virus
Type: Trojan
Distribution: Low
Damage level: Severe

Oscorp malware removal guide

What is Oscorp?

Oscorp is a malware targeting devices that use the Android operating system. It has a variety of malicious functionalities. Oscorp's abilities include: data extraction, sending text messages, making phone calls, spying, removing anti-virus tools, etc. Due to its many heinous features, Oscorp is deemed to be a highly dangerous piece of software. Therefore, it must be removed immediately upon detection.

Oscorp's operations depend on the Android AccessibilityService. This service is designed to aid users with disabilities use, read, and otherwise interact with their devices. The nature of the accessibility services allows them access to what is displayed on the screen (including what the user types) and to simulate the touch screen. This malware requires the AccessibilityService to be enabled. Should that not be the case, it continuously displays a screen requesting the service to be allowed, thus forcing the user to consent in hopes that the screen will no longer appear. If these services are enabled but not access to the device usage statistics - Oscorp will also begin showing the settings screen until the desired effect is achieved. From then on, the malware gains all the permissions it need automatically (i.e., without user interference).

Oscorp collects the following information from the infected device - the phone's model, telephone operator, and list of installed applications. This piece of malicious software can open apps, disable, and uninstall them. The latter is particularly relevant in relation to installed anti-virus tools. Among the system protection/ malware removal software that Oscorp targets are: Avast, Avira, Dr.Web, ESET, Lookout, PCProtect, Symantec, Total AV, and Trend Micro. It also disables applications that contain these strings in their names: com.wsandroid.suite, security, clean, virus, junk, malware, anti, guard, boost, scan, kms, cleaner, etc. This malicious application can manage SMSes - send and delete them. Likewise, it is capable of making phone calls. Oscorp's spying abilities are audio and video (screen) recording. The malware targets cryptocurrency transactions as well. Specifically, on the Blockchain.com wallet app - it can replace recipient cryptowallet addresses with those belonging to the cyber criminals.

However, Oscorp's main functionality is keylogging. To elaborate, this means that it can record any and all typed information. Cyber criminals are particularly interested in: log-in credentials (IDs, usernames, and passwords) of various applications, apps, and services; names; addresses; emails; banking account and credit card details; and so on. Hijacked communication accounts (e.g., emails, social networking, social media, messengers, etc.) can be used to ask contacts/friends for loans and/or to spread malware - under the guise of the genuine owner. Stolen banking accounts or others that deal with finances/ financial information (e.g., digital wallets, cryptowallets, online money transferring, e-commerce, etc.) can be used to make fraudulent transactions and/or online purchases. In summary, Oscorp infections can lead to severe privacy issues, financial losses, and even identity theft. If it is known/suspected that Oscorp (or other malware) has already infected the device - an anti-virus must be used to eliminate it without delay.

Oscorp malware detections on VirusTotal

Threat Summary:
Name Oscorp virus
Threat Type Android malware, malicious application, unwanted application.
Detection Names Avast-Mobile (Android:Evo-gen [Trj]), BitDefender (Trojan.GenericKD.45634298), ESET-NOD32 (A Variant Of Android/Spy.Banker.AWJ), Kaspersky (HEUR:Trojan-Banker.AndroidOS.Swarz.a), 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 (Windows) To eliminate malware infections our security researchers recommend scanning your Android device with legitimate anti-malware software. We recommend Avast, Bitdefender, ESET or Malwarebytes.

ThiefBotCerberusBasbankeJoker, and Anubis are some examples of other Android targeting malware. Malicious software can have a broad range of functionalities, which can cause likewise varied problems for its victims. Regardless of how malware operates - it always poses a threat to device integrity and user safety. Therefore, it is highly recommended to prioritize safety and regularly scan the device for threats and other issues.

How did Oscorp infiltrate my device?

Oscorp has been observed being proliferated via malicious websites. This is not an uncommon distribution technique in malware proliferation. Malignant content is often spread through untrustworthy download channels, e.g., unofficial and free file-hosting (freeware) sites, Peer-to-Peer sharing networks (Torrent clients, eMule, Gnutella, etc.), and other third-party sources. What is more, malware is often disguised as or bundled with ordinary software/media. Illegal activation tools ("cracks") and fake updaters are prime examples of such content. "Cracking" tools can infect systems instead of activating licensed products. Illegitimate updaters cause infections by exploiting flaws of outdated software and/or by installing malware rather than the promised updates.

Spam campaigns are mass-scale operations during which thousands of deceptive/scam emails are sent. The letters can contain download links of infectious files and/or the files are attached to the emails. Virulent files can be in various formats, e.g., archives, executables, PDF and Microsoft Office documents, JavaScript, etc. When these files are opened - the infection process (i.e., malware download/installation) is triggered.

How to avoid installation of malware?

It is recommended to only use official and verified download channels. Additionally, software must be activated and updated with tools/functions provided by legitimate developers. Suspicious/irrelevant emails must not be opened, especially any links or attachments present in them - as that can lead to a high-risk malware infection. To ensure device and user safety, it is crucial to have a dependable anti-virus/anti-spyware suite installed and kept up-to-date. This software has to be used to run regular system scans and to 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.

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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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