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Google Pulls 500+ Backdoored Apps With Over 100 Million Downloads From Google Play (helpnetsecurity.com)

Orome1 shares a report from Help Net Security: Security researchers have identified over 500 apps on Google Play containing an advertising software development kit (SDK) called Igexin, which allowed covert download of spying plugins. The apps in question represent a wide selection of photo editors, Internet radio and travel apps, educational, health and fitness apps, weather apps, and so on, and were downloaded over 100 million times across the Android ecosystem. Lookout researchers did not name the apps that were found using the malicious SDK, but notified Google of the problem. The latter then proceeded to clean up house, either by removing the offending apps altogether, or by forcing app developers to upload an updated version with the invasive features (i.e. the Igexin SDK) removed. "Users and app developers have no control over what will be executed on a device after the remote API request is made. The only limitations on what could potentially be run are imposed by the Android permissions system," the researchers pointed out. "It is becoming increasingly common for innovative malware authors to attempt to evade detection by submitting innocuous apps to trusted app stores, then at a later time, downloading malicious code from a remote server. Igexin is somewhat unique because the app developers themselves are not creating the malicious functionality -- nor are they in control or even aware of the malicious payload that may subsequently execute. Instead, the invasive activity initiates from an Igexin-controlled server."

21 of 58 comments (clear)

  1. List by Anonymous Coward · · Score: 5, Insightful

    What's the point of source material that doesn't include a list of the apps?

    1. Re:List by Ritz_Just_Ritz · · Score: 4, Insightful

      I agree. Without the list of impacted applications, this "warning" is pretty worthless and more of a PR piece.

    2. Re:List by TheDarkMaster · · Score: 2

      I also agree. Whats the point of the warning if you can not see which applications are affected?

      --
      Religion: The greatest weapon of mass destruction of all time
    3. Re:List by Anonymous Coward · · Score: 4, Interesting

      Not a ideal solution. You might have data and whatnot on these apps.

      Also, doing it automatically makes Google look like Microsoft and their Windows 10 updates. I guess it's just not good PR.

    4. Re:List by swillden · · Score: 4, Informative

      What's the point of source material that doesn't include a list of the apps?

      According to the Ars Technica article, the researchers say they didn't publish a list of the apps to avoid punishing app developers who didn't realize that the Igexin SDK could download and execute plugins which could potentially exfiltrate user data that the app had permission to see.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
    5. Re:List by Anonymous Coward · · Score: 5, Insightful

      Translation:" Big, BIG Brand apps were also affected and we don't want to end up on their shit lists."

    6. Re:List by Anonymous Coward · · Score: 4, Insightful

      Not only should a list of the "Apps" be provided, so should a list of the "Developers" who used this SDK. Let's run this down, shall we?
      The Igexin SDK is Adware. "Developers" use it to generate extra income by letting Third Parties deliver Ads within the App. They have the ethics of an Alley-Cat; they don't care what the Ads are for, or assume any responsibility for them.
      They are too stupid, too lazy, or too venal to care. (This is true for anybody who lets Third Party Advertising through. If they don't care to Host or Vet this crap, screw them.)
      All Adware is Malware these days by definition. Top bad, it didn't have to be this way. Also note how delicately wording is being used here. The Apps, the Developers, the Igexin Touts being discussed here are all Chinese Nationals. This is one that can't be blamed on the Russians.
      This is not a knock against the Chinese. If this proves to be an embarrassment enough, China has the will and the means to Disappear those involved.
      So let's see the list of the Apps, and the list of the Names.
      This is the kind of information that needs to be free. For the Embarrassment.

    7. Re:List by The+MAZZTer · · Score: 2

      Android already warns users if they have apps installed, sideloaded or not, that are suspicious. I expect Google will (if they haven't already) roll out new malware definitions which will alert users who have one of these apps installed.

  2. So why aren't these Apps named? by Anonymous Coward · · Score: 4, Insightful

    ... IMHO these Apps should be named ...

    1. Re:So why aren't these Apps named? by Anonymous Coward · · Score: 3, Insightful

      Better yet. Google should present us with an App that verifies if any of them are currently on our devices and offer to remove them.

      Simply pulling from the store amounts to little more than sweeping the problem under the rug.

    2. Re:So why aren't these Apps named? by sabbede · · Score: 3, Informative

      Igexin won't name them either. Like many companies, they have a page on their site to brag on who uses their SDK. None are listed.

    3. Re:So why aren't these Apps named? by bobstreo · · Score: 2

      Better yet. Google should present us with an App that verifies if any of them are currently on our devices and offer to remove them.

      Simply pulling from the store amounts to little more than sweeping the problem under the rug.

      Don't forget the refund if they're non-free apps.

  3. Wow by Anonymous Coward · · Score: 2, Insightful

    FFS Google, how did you let it get this bad? I thought that you were supposed to be watching out for this kind of stuff. We need a "Install apps from the Google Play Store" toggle in the next version of Android. Default: OFF.

  4. Outraged by Anonymous Coward · · Score: 2

    Only Google's homegrown spyware is allowed on my phone! None of this third-party spyware for me.

  5. If anyone is interested in what Igexin says... by sabbede · · Score: 4, Interesting
    They have a response on their website, but for some reason won't allow it to be translated in-place like the bulk of their site. Copy&paste worked though:

    Key words: August 23, 2017 morning, the domestic website reported entitled "Google removed Google Play on more than 500 malicious applications" and other related content, and point to the Igexin SDK security issues. It is understood that the content from a foreign media reports, due to foreign technical staff on the Division I technical mechanism to understand the bias, mistakenly SDK hot fix function is understood as the back of the malicious software download, resulting in part of the domestic media translation, Interpretation, there are some misunderstandings.

    With the hot fix function of the SDK, App is an important part of the operation, if the bug because it will cause the failure of App can not work, developers need to re-issue, in order to ensure that App can be used as soon as possible, this technology is the domestic many App developers Required to join, and is widely used for business function updates and problem fixes.

    With regard to hot fix technology, Apple and Google have made the latest restrictions since this year, changing the rules that allowed the use of hot updates before.

    The Google Developer Center website is up to date

    For apps distributed via Google Play, you may not modify, replace, or update the app itself in any manner other than the Google Play update mechanism. Likewise, the application may not download executable code (such as dex, JAR, and .so files) from sources other than Google Play. This restriction does not apply to code that runs on a virtual machine and has limited access to the Android API (such as JavaScript in a WebView or browser).

    When we received some app developer feedback, we contacted the Google team for the first time, communicated the matter, followed by the hot fix, and provided the SDK version that meets the latest Google Play review requirements. The use of the relevant version of the SDK SDK developers have updated the version, and re-Google shelves, previously encountered security tips and other issues have also been properly resolved. Foreign media mentioned in the original text of the test occurred in the Google review strategy adjustment period, the text involved in the SDK for the earlier version, has been rarely used. In the future, we will work closely with domestic and foreign testing organizations to avoid such incidents from happening again.

    We apologize for the distress caused by the developers and the media units.

    Thank you again for the support of our company as always. We will continue to optimize the technology for the majority of developers to provide more quality services!

  6. Well... by argStyopa · · Score: 2

    ...mightn't it be useful somewhere to list the apps that were pulled, and or their authors?

    --
    -Styopa
  7. Android itself is a security flaw by Anonymous Coward · · Score: 2

    So they once have flaws in their walled garden store that allow malware on to people's devices, then don't even tell them which ones they were. They have had flaws in the past, and who knows how many more are yet to be discovered.

    While they do monthly "security updates" less than 1% of users actually get them in a timely manner most will never get them at all and you can forget about large OS updates.

    One of these days some horrible malware is going to hit most of their users and once that happens, it will happen over and over and over again. Very similar to what happened with MS and windows xp in the beginning. Maybe then google will take security seriously and have a sane update model that won't leave their users screwed. Maybe. Probably not.

  8. More proof Google is evil by HBI · · Score: 4, Insightful

    Their app store is riddled with malware and they won't identify the malware. That really engenders trust and makes me want to use their stuff.

    --
    HBI's Law: Frequency of calling others Nazis is directly correlated with the likelihood of the accuser being Communist.
  9. Doesn't matter by volodymyrbiryuk · · Score: 4, Interesting

    Dumb ass users will complain that one of their favorite apps is gone and install it from 3rd party. And then complain that their phones are compromised.

    --
    sudo rm -r -f --no-preserve-root /
  10. Bullshit, SDK's should not "hot-fix" by Anonymous Coward · · Score: 3, Insightful

    Possible nefarious behavior aside, this behavior is unacceptable in an "SDK". The developer/development team that created the application developed against a specific version of the SDK and tested against that. If an SDK hot-fixes, you've completely invalidated the testing for that application and possibly broken things in the application. Even if the only thing you're doing is fixing known bugs in the SDK, it's quite possible that the developers implemented code to work around those bugs and fixing it will cause those workarounds will now break (e.g. the API returns ERROR_002 for a certain condition when it should be returning ERROR_001. Problems like this are common in SDKs). So either they are:
    1. Evil programmers who wanted to make your app do something unintended.
    2. Incompetent programmers who could accidently make your app do something unintended.
    Either option sucks.

  11. Re: Google's future? by Anonymous Coward · · Score: 2, Informative

    Lgexin was a legitimate ad network at one point, but it contained an update mechanism which could be abused later (and downloading malicious components later was one way to evade Google's malware scanners). The apps are being removed/updated to prevent future abuse, not only to stop current abuse; The list of affected app is being witheld because not all of the apps/developers were malcious.