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Myournet Pirated Apps Root, Steal Data, Install Code…Just to Start

by Juniper Employee on ‎03-02-2011 01:54 PM

Update: Since initially reporting on this incident more than 24 hours ago, it has since come to light that there are now two additional developer accounts that have unofficially been suspended by Google in connection with the original Myournet (also referred to as “DroidDream”).  These 2 additional developer accounts are “we20090202″ and “kingmail2010″.  An additional 35 applications are now known to have existed in the official Android Market that would fall under the umbrella of the Myournet family of pirated and trojanized applications.

 

Additionally, the ISP hosting the third-party server that was being used to send the device-identifying-data has taken that server offline.  The URL that was serving this functionality was at “http://184.105.245.17:8080/[Redacted]” and was being served by an ISP called Hurricane Electric (http://www.he.net/), in Fremont, California.  The ISP was quick to respond to requests to disconnect this server.

 

Juniper’s Junos Pulse Mobile Security Suite detected Myournet preceding the public release of this malware.  Our Advanced Spyware detection for Android was already detecting similar spyware and the identifiers we used for the original spyware apply directly to Myournet and its variants. So, protecting our customers didn’t require an update to be pushed. The heuristic/Advanced Spyware capability of the Junos Pulse Mobile Security Suite provided the needed zero day protection, as designed.

 

The full list of applications that are known to be affected by the Myournet trojans are:

 

From Developer “we20090202″:

Finger Race

Piano

Bubble Shoot

Advanced Sound Manager

Magic Hypnotic Spiral

Funny Face

Color Blindness Test

Tie a Tie

Quick Notes

Basketball Shot Now

Quick Delete Contacts

Omok Five in a Row

Super Sexy Ringtones

大家来找茬

桌上曲棍球

投篮高手

From Developer “Kingmail2010″:

Bowling Time

Advanced Barcode Scanner

Supre Bluetooth Transfer

Task Killer Pro

Music Box

Sexy Girls: Japanese

Sexy Legs

Advanced File Manager

Magic Strobe Light

致命绝色美腿

墨水坦克Panzer Panic

裸奔先生Mr. Runner

软件强力卸载

Advanced App to SD

Super Stopwatch & Timer

Advanced Compass Leveler

Best password safe

掷骰子

多彩绘画

 

From Developer “Myournet”:

Falling Down

Super Guitar Solo

Super History Eraser

Photo Editor

Super Ringtone Maker

Super Sex Positions

Hot Sexy Videos

Chess

下坠滚球_Falldown

Hilton Sex Sound

Screaming Sexy Japanese Girls

Falling Ball Dodge

Scientific Calculator

Dice Roller

躲避弹球

Advanced Currency Converter

App Uninstaller

几何战机_PewPew

Funny Paint

Spider Man

蜘蛛侠

 

The full list of Android package names is as follows:

com.advanced.scientific.calculator

com.advanced.soundmanager

com.app.aun

com.apps.tosd

com.beauty.leg

com.bubble

com.dice.power.advanced

com.dice.power

com.dodge.game.fallingball

com.droiddream.advancedtaskkiller1

com.droiddream.android.afdvancedfm

com.droiddream.barcodescanner

com.droiddream.basketball

com.droiddream.blueftp

com.droiddream.bowlingtime

com.droiddream.comparator

com.droiddream.compasslevel

com.droiddream.daltonismo

com.droiddream.fallingball

com.droiddream.game.omok

com.droiddream.glowhockey

com.droiddream.howtotie

com.droiddream.lovepositions

com.droiddream.musicbox

com.droiddream.passwordsafe

com.droiddream.pewpew

com.droiddream.sexringtones

com.droiddream.stopwatch

com.droiddream.system.app.remover

com.editor.photoenhance

com.fall.down

com.fall.soft.down

com.free.chess

com.free.game.finger

com.hg.panzerpanic1

com.hz.game.mrrunner1

com.magic.spiral

com.power.basketball

com.power.demo.note

com.power.magic.strobelight

com.power.supersolo

com.quick.delete

com.sex.japaneese.girls

com.sexsound.hilton

com.sexy.hotgirls

com.sexy.legs

com.spider.man

com.super.mp3ringtone

hot.goddchen.sexyvideos

org.droiddream.yellow4

power.nick.ypaint

power.power.rate

powerstudio.spiderman

proscio.app.nick.ypaint

super.mobi.eraser

super.sancron.ringtones.sexysb

————-

The most advanced Android malware to hit the streets has been uncovered inside the Android Market.  Analysis indicates that several techniques for accessing data, opening back doors, installing unauthorized code and rooting an Android device have all been put together to make up the most capable and advanced Trojan to affect the Android platform to date.

 

Research indicates that a developer by the name of “Myournet” has pirated at least 21 legitimate Android applications in the Android Market.  In doing so, this developer has packed the legitimate applications with some amazing capabilities.  To begin, the pirated and trojanized applications have the ability to root an Android device using the ‘rageagainstthecage’ root exploit to allow the trojan access to data and services only obtained with root access.  Tucked inside the malicious code is the following string: “CVE-2010-EASY Android local root exploit (C) 2010 by 743C”

 

But that’s just the beginning.  Once the Myournet applications are installed and have rooted the device, another APK that is tucked inside of the code is installed in the background (see Oberheide’s POC) without alerting the user that it is being installed. This additional package allows the trojan to capture the product ID, model, partner (provider?), language, country, and userID configured on the device.  This information is then transmitted off of the device to a server in California.

 

If that’s not enough, Myournet goes further by embedding the ability for the trojan to download and install additional applications at will, all without informing or obtaining permission from the user to do so.  At the time of this writing, there are 21 known applications that were pirated and packed with Myournet code:

 

Falling Down
Super Guitar Solo
Super History Eraser
Photo Editor
Super Ringtone Maker
Super Sex Positions
Hot Sexy Videos
Chess
下坠滚球_Falldown
Hilton Sex Sound
Screaming Sexy Japanese Girls
Falling Ball Dodge
Scientific Calculator
Dice Roller
躲避弹球
Advanced Currency Converter
App Uninstaller
几何战机_PewPew
Funny Paint
Spider Man
蜘蛛侠

 

Myournet was known to have existed in the official Android Market for at least 4 days.  At the time of this writing, Google has been notified and their internal investigation resulted in the ousting of these 21 applications as well as the removal of Myournet’s developer account in less than 5 minutes.  However, it would not be difficult for this malicious developer to pay the $25 dollar developer account fee and lie his/her way into another developer account to release the next iteration of their malware.

Even more concerning is the fact that over the 4 day period that Myournet’s pirated and trojanized applications where available in the Android Market, the combined download occurrence of all 21 apps is estimated to be near 50,000 downloads.  While Google was quick to react to remove the threats from the Android Market, what is to be done about the estimated 50,000 users who downloaded and installed these applications?  Where do they go to get their data back?

 

At this point, you might be wondering what type of technical expertise it took to identify Myournet in the Market.  It was simple.  A security researcher was simply looking for an application in the Market when he stumbled upon the fact that there were, what appeared to be, two identical applications from different developers.  Further investigation led to the revelation that the developer Myournet had released several applications that appeared to be identical to various free applications from different developers. All it took was this a bit of suspicion from this researcher that led him to actually pull down the pirated apps and begin taking a look at them.  A bit of fancy analysis from someone in the know, and the proverbial beans began to spill.

 

We mention this last part because these are the things that average consumers need to ensure they are doing when they are looking to download an application.  Just do a tiny bit of due diligence in ensuring you’re getting the real thing from the official app stores before you install them.

 

If you’re sideloading apps from 3rd party stores, it gets much more difficult to ensure that they are legitimate applications.  While Google and the Android Market are getting slammed for their open approach with no real review process, they have always acted swiftly to remove overtly malicious applications from their dissemination as soon as they are notified and it is confirmed. This does not mean that anyone should rely on Google or BlackBerry or even Apple to guarantee the validity of the applications in their marketplace.

 

Users that are not yet leveraging a client anti-virus product on their smartphone must rely solely on their own ability to determine if an application is legitimate or malicious.  How many average consumers out there have a lot of confidence in their ability to get it right every time?  It’s just the integrity of your device, your data, your personal life and possibly your finances that are at stake here…

 

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