Judy Android Malware: From the Play Store to 36.5 Mill Android Devices

Judy Android Malware: Checkpoint security researchers claim they have perhaps discovered the biggest Google Play Store malware campaign that has already infected about 36,5 million Android devices with ad-click software.

Checkpoint posted on her blog more than 41 apps for Android from a Korean company on the Google Play Store that allegedly earned money for their creators creating fake ad clicks from infected devices.Judy Android Malware

All malicious applications, developed by Korea-based Kiniwini, were released under the name ENISTUDIO Corp and contained an adware program called "Judy" by researchers. Judy, as we mentioned earlier, was used to generate false clicks aimed at generating advertising revenue.

In addition, researchers also uncovered some other apps, which were published by other developers in the Google Play Store, and inexplicably contain the malware itself.

The link between the two campaigns remains unclear, though the researchers believe it is possible that one programmer borrowed the code from the other, "knowingly or unknowingly".

"It is very unusual to find an organization behind a malware campaign, as most of them are developed purely by malicious (standalone) users," say CheckPoint researchers.

Apps available on the Play Store do not contain malicious code to bypass Google Bouncer protection.

Once the download and installation are done, the application silently logs the user on a remote control server and in response receives the real Malware malware (Judy Android Malware) that contains a JavaScript that starts the actual malicious process.

Malicious apps appear to be genuinely legitimate games, but in the background they act as a bridge to connect the victim's device to the adware server.

Once the connection is established, malicious applications corrupt the user agents of the browser to "play" the browser to open pages and generate clicks.

The following is a list of malicious applications developed by Kiniwini (click on "Malicious Applications" to open the list). If you have any of these installed on your device, remove it immediately:

Malicious Applications

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  • Fashion Judy: Snow Queen Style
  • Animal Judy: Persian cat care
  • Fashion Judy: Pretty rapper
  • Fashion Judy: Teacher style
  • Animal Judy: Dragon who
  • Chef Judy: Halloween Cookies
  • Fashion Judy: Wedding Party
  • Animal Judy: Teddy Bear who
  • Fashion Judy: Bunny Girl Style
  • Fashion Judy: Frozen Princess
  • Chef Judy: Triangular Kimbap
  • Chef Judy: Udong Maker - Cook
  • Fashion Judy: Uniform style
  • Animal Judy: Rabbit care
  • Fashion Judy: Vampire style
  • Animal Judy: Nine-Tailed Fox
  • Chef Judy: Jelly Maker - Cook
  • Chef Judy: Chicken Maker
  • Animal Judy: Sea otter care
  • Animal Judy: Elephant care
  • Judy's Happy House
  • Chef Judy: Hotdog Maker - Cook
  • Chef Judy: Birthday Food Maker
  • Fashion Judy: Wedding day
  • Fashion Judy: Waitress style
  • Chef Judy: Character Lunch
  • Chef Judy: Picnic Lunch Maker
  • Animal Judy: Rudolph who
  • Judy's Hospital: Pediatrics
  • Fashion Judy: Country Style
  • Animal Judy: Feral Cat who
  • Fashion Judy: Twice Style
  • Fashion Judy: Myth Style
  • Animal Judy: Fennec Fox who
  • Animal Judy: Dog Care
  • Fashion Judy: Couple Style
  • Animal Judy: Cat care
  • Fashion Judy: Halloween Style
  • Fashion Judy: EXO Style
  • Chef Judy: Dalgona Maker
  • Chef Judy: ServiceStation Food
  • Judy's Spa Salon

Google has already removed the above apps containing Judy Android Malware from the Play Store, but since Google Bouncer did not recognize them as a malicious thing at the outset, it would be to watch what you downloaded.

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