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Ransomware On Android Evolves To Use Your Voice For Unlocking

By March 3, 2017March 1st, 2023Cybersecurity

Lockdroid is one of the oldest forms of ransomware in the Android ecosystem, and recently, it has been evolving at a frightening pace. Just last month, researchers found a version that displayed a 2D barcode, with the idea being that the infected user would scan the barcode to get a URL where payment could be made to unlock your files. Now, though, a new variant has surfaced that’s both interesting and noteworthy.

In the latest version, found by Symantec, the hackers display a username for an instant messaging app called “QQ.” The idea is that the infected user contacts an agent of the hacker on the chat software, negotiates a payment, and, once the payment has been received and verified, the victim is given a four-digit code.

Rather than typing the code in, however, you have to speak it into your phone to get your files back.

We have seen TTS (Text To Speech) used occasionally that causes the infected computer to “read” the ransom demands from a text file, but this is the first time we’ve ever seen voice activation used to unlock files.

At present, this strain appears limited to the Chinese market, but there’s nothing that would stop the hackers from shifting to a different target.

Perhaps the most disturbing aspect of this is the pace of development. An analysis of the code reveals a great deal of churn, making it clear that there’s a concerted and ongoing effort to enhance and improve the code. This is all in an ongoing effort to make it a more efficient, effective vehicle for extracting money from infected users.

As ever, the best way to avoid infection is to ensure that any apps you install come from the Google Play Store. Third party vendors simply don’t have the same level of security, which increases your risk.

Chris Forte

Chris Forte, President and CEO of Olmec Systems, has been in the MSP workspace for the past 25 years. Chris earned his Master’s Degree from West Virginia University, graduating Magna Cum Laude. He was a past member of the Entrepreneurs’ Organization, a current member of the New Jersey Power Partners and Executive Association of New Jersey, where he has previously served on its board of directors. In his spare time, Chris enjoys traveling with his family. He also admits to being a struggling golfer and avid watcher of college football and basketball. He currently lives in Boonton Township, NJ with his wife, two daughters, son, and black lab Luna.