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

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 !
Dr.T
50%
50%
Dr.T,
User Rank: Ninja
8/29/2019 | 2:08:13 PM
Re: The Risk you run with an Ad platform
"Give my a non-ad based version of your app and have it expire so if I like your tool I will have to purchase it. "

I totally want this too, but I also want a free version, limited free version Which may have some ads as long as they are safe.
Dr.T
50%
50%
Dr.T,
User Rank: Ninja
8/29/2019 | 2:06:18 PM
Re: The Risk you run with an Ad platform
" if you run into an occurrence such as this it will negatively affect your brand reputation"

Most likely users would not know where the ads were originated so I think  there is a less of a risk.
Dr.T
50%
50%
Dr.T,
User Rank: Ninja
8/29/2019 | 2:03:57 PM
Re: The Risk you run with an Ad platform
"Unfornuately, when you have a freeware version predicated on ad's for revenue you run this risk."

Yes, we get used to using free apps and not clear the same problems that may come from them.

 

Dr.T
50%
50%
Dr.T,
User Rank: Ninja
8/29/2019 | 2:03:01 PM
CamScanner

Using scanner in Apple Note app and never had  a problem. No need to use third party for it. 

 

Dr.T
50%
50%
Dr.T,
User Rank: Ninja
8/29/2019 | 2:01:53 PM
Google
'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."

Why does not Google catch this in the first approval, do they not have an approval process like Apple?.  

 

RyanSepe
50%
50%
RyanSepe,
User Rank: Ninja
8/29/2019 | 9:40:40 AM
The Risk you run with an Ad platform
Unfornuately, when you have a freeware version predicated on ad's for revenue you run this risk. Vetting the sheer number of ads would take an astronomical amount of time however if you run into an occurrence such as this it will negatively affect your brand reputation. Causing your user population to decrease. This is why I advocate more for trials. Give my a non-ad based version of your app and have it expire so if I like your tool I will have to purchase it. Introduces less risk and provides more of a clean cut feel to the app.
US Turning Up the Heat on North Korea's Cyber Threat Operations
Jai Vijayan, Contributing Writer,  9/16/2019
7 Ways VPNs Can Turn from Ally to Threat
Curtis Franklin Jr., Senior Editor at Dark Reading,  9/21/2019
Security Pros Value Disclosure ... Sometimes
Dark Reading Staff 9/19/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: I wish they'd put a sock in it.
Current Issue
7 Threats & Disruptive Forces Changing the Face of Cybersecurity
This Dark Reading Tech Digest gives an in-depth look at the biggest emerging threats and disruptive forces that are changing the face of cybersecurity today.
Flash Poll
The State of IT Operations and Cybersecurity Operations
The State of IT Operations and Cybersecurity Operations
Your enterprise's cyber risk may depend upon the relationship between the IT team and the security team. Heres some insight on what's working and what isn't in the data center.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-16691
PUBLISHED: 2019-09-23
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none.
CVE-2019-16707
PUBLISHED: 2019-09-23
Hunspell 1.7.0 has an invalid read operation in SuggestMgr::leftcommonsubstring in suggestmgr.cxx.
CVE-2019-16708
PUBLISHED: 2019-09-23
ImageMagick 7.0.8-35 has a memory leak in magick/xwindow.c, related to XCreateImage.
CVE-2019-16709
PUBLISHED: 2019-09-23
ImageMagick 7.0.8-35 has a memory leak in coders/dps.c, as demonstrated by XCreateImage.
CVE-2019-16710
PUBLISHED: 2019-09-23
ImageMagick 7.0.8-35 has a memory leak in coders/dot.c, as demonstrated by AcquireMagickMemory in MagickCore/memory.c.