[XPERIA X10 General] kyudo:
Openness – the very characteristic of Android that makes us love it – is a double-edged sword. Redditor lompolo has stumbled upon a perfect example of that fact; he’s noticed that a publisher has taken "… 21 popular free apps from the market, injected root exploits into them and republished." The really scary part? "50k-200k downloads combined in 4 days."

Lompolo explains the situation quite well:

Link to publishers apps here. I just randomly stumbled into one of the apps, recognized it and noticed that the publisher wasn’t who it was supposed to be.

Super Guitar Solo for example is originally Guitar Solo Lite. I downloaded two of the apps and extracted the APK’s, they both contain what seems to be the "rageagainstthecage" root exploit – binary contains string "CVE-2010-EASY Android local root exploit (C) 2010 by 743C". Don’t know what the apps actually do, but can’t be good.

I appreciate being able to publish an update to an app and the update going live instantly, but this is a bit scary. Some sort of moderation, or at least quicker reaction to malware complaints would be nice.

EDIT: After some dexing and jaxing, the apps seem to be at least posting the IMEI and IMSI codes to hxxp://184.105.245.17:8080/GMServer/GMServlet, which seems to be located in Fremont, CA.

I asked our resident hacker to take a look at the code himself, and he’s verified it does indeed root the user’s device via rageagainstthecage or exploid. But that’s just the tip of the iceberg: it does more than just yank IMEI and IMSI. There’s another APK hidden inside the code, and it steals nearly everything it can: product ID, model, partner (provider?), language, country, and userID. But that’s all child’s play; the true pièce de résistance is that it has the ability to download more code. In other words, there’s no way to know what the app does after it’s installed, and the possibilities are nearly endless.

Justin pinged a contact at Google to bring the issue to their attention. In the time I’ve proofed this post, they’ve already checked the apps and are planning on pulling them from the Market [Update: holy cheeseballs, they've been pulled already! Took less than 5 minutes from first contact to pull!], as well as remotely removing them from user’s devices. Unfortunately, that doesn’t remove any code that’s already been backdoored in.

Let’s hope they’re quick to react – this is the ultimate Android Trojan to date, and it’s already been downloaded over 50,000 times.

Feel free to discuss this over at Droid Forums, or via the comments below.

Update: The publisher’s been removed entirely from the market, so you can no longer see the list of apps. Luckily, I managed to grab a few screenshots last night. There’s been a ton of response to this, and we’ve been contacted by a few big dogs. Justin is also working on a removal tool. I’ll be doing a follow-up post this evening.

Left: the real app. Right: Myournet’s virused-up version.

The offending apps from publisher 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

Credits To xxx.AndroidPolice.com for the news

hxxp://xxx.androidpolice.com/2011/03/01/the-mother-of-all-android-malware-has-arrived-stolen-apps-released-to-the-market-that-root-your-phone-steal-your-data-and-open-backdoor/