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
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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…
Ashwin Krishnan (Ashwin)
on:
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