Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Risk

8/28/2019
12:30 PM
50%
50%

Malware Found in Android App with 100M Users

CamScanner, a legitimate app used to scan and manage documents, was found executing payloads on Android devices.

CamScanner, an Android app commonly used to scan and organize electronic documents, was found to contain malicious components to download malware onto infected Android devices.

The PDF creator is legitimate and has been downloaded more than 100 million times, Kaspersky Lab researchers report, noting recent reviews indicated unwanted features. CamScanner relied on ads and in-app purchases to make money. At some point, things changed, and analysis shows the app was updated with an advertising library containing a malicious dropper component.

Researchers call the dropper Trojan-Dropper.AndroidOS.Necro.n. When CamScanner is run, the module extracts and runs a payload from an encrypted file in the app's resources. This "dropped" malware, they explain, can download more malicious code. As a result, the module's owners can use an infected device any way they want; for example, they could push false advertisements to the screen or charge victims paid subscriptions to benefit from financial gain.

When Kaspersky Lab researchers analyzed a recent version of the app and found the malicious module, they reported their findings to Google, and CamScanner was removed from Google Play. While it seems the app's developers removed the malicious code in the latest update, researchers warn that versions of the app vary from device to devices, and some may still contain the malware.

These findings highlight that any app, even a legitimate one from an official store with positive reviews, can be updated to contain malware. Even Google can't thoroughly scan the millions of apps in the Play store and, as a result, malware can slip through the cracks and end up in apps that have been vetted.

Read more details here.

Related Content:

Check out The Edge, Dark Reading's new section for features, threat data, and in-depth perspectives. Today's top story: The Right to Be Patched: How Sentient Robots Will Change InfoSec Management.

Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Naturopathe
50%
50%
Naturopathe,
User Rank: Apprentice
9/3/2019 | 4:03:59 AM
Re: CamScanner
Absolutely the point !
Commentary
How SolarWinds Busted Up Our Assumptions About Code Signing
Dr. Jethro Beekman, Technical Director,  3/3/2021
News
'ObliqueRAT' Now Hides Behind Images on Compromised Websites
Jai Vijayan, Contributing Writer,  3/2/2021
News
Attackers Turn Struggling Software Projects Into Trojan Horses
Robert Lemos, Contributing Writer,  2/26/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win an Amazon Gift Card! Click Here
Latest Comment: Sure you have fire, but he has an i7!
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-25344
PUBLISHED: 2021-03-04
Missing permission check in knox_custom service prior to SMR Mar-2021 Release 1 allows attackers to gain access to device's serial number without permission.
CVE-2021-25345
PUBLISHED: 2021-03-04
Graphic format mismatch while converting video format in hwcomposer prior to SMR Mar-2021 Release 1 results in kernel panic due to unsupported format.
CVE-2021-25346
PUBLISHED: 2021-03-04
A possible arbitrary memory overwrite vulnerabilities in quram library version prior to SMR Jan-2021 Release 1 allow arbitrary code execution.
CVE-2021-25347
PUBLISHED: 2021-03-04
Hijacking vulnerability in Samsung Email application version prior to SMR Feb-2021 Release 1 allows attackers to intercept when the provider is executed.
CVE-2021-25348
PUBLISHED: 2021-03-04
Improper permission grant check in Samsung Internet prior to version 13.0.1.60 allows access to files in internal storage without authorized STORAGE permission.