Feeds

First malicious iPhone worm slithers into wild

Jailbreakers under assault

Secure remote control for conventional and virtual desktops

A Dutch internet service provider has identified a worm that installs a backdoor on jailbroken iPhones and makes them part of a botnet.

The worm, according to XS4ALL, targets jailbroken iPhones whose owners have carelessly failed to change the default password. In addition to connecting to a Lithuanian master command channel, it also changes the root password for the device, making it harder for owners trying to regain control. Infected iPhones are also tagged with a unique ID number.

"A number of customers with jailbroken phones have been found running unknown software on their phones which is trying to compromise other iPhone users at other telecommunications providers," the XS4ALL advisory stated. "XS4ALL strongly advises caution against jailbreaking if you are not fully aware of the potential risks to your privacy and security."

The worm has the ability to pillage SMS databases, and an analysis by Security.nl (English translation here) has identified a script that looks for mobile transaction authentication numbers used by some banks to perform two-factor authentication with SMS-based systems. (Sophos also has analysis here.)

The worm tries to propagate by scanning a variety of IP ranges, including those used by carriers T-Mobile, UPC in the Netherlands, and Optus in Australia. The worm is especially active when it has access to wi-fi networks. One tip-off that a device has been infected is that battery life is extremely short when connected to 802.11 networks because the worm generates so many connections. The worm is not widespread, F-Secure said Sunday.

The attacks come two weeks after a separate piece of self-replicating code caused iPhones mostly located in Australia to display images of Rick Astley, the schmaltzy 1980s pop singer. The most recent outbreak appears to be the first instance of malicious iPhone malware spreading in the wild.

The worms are able to spread only on iPhones that have been jailbroken, have an SSH-enabled application installed and continue to use the default root password. Once they are identified on a network, the malware is able to connect using the password and install itself. One would think people who are smart and energetic enough to jailbreak a smartphone would know about the perils of SSH and default root passwords, but the success of these worms suggests otherwise.

According to F-Secure Chief Research Officer Mikko Hypponen, the command and control channel used by the worm is 92.61.38.16. Admins who find this IP address being accessed have good reason to believe they may have a problem. Infected iPhones should be reset to the factory firmware using Apple's iTunes.

Of course, iPhones that are reset will no longer be jailbroken, but that's certainly a better alternative than being part of a botnet. ®

New hybrid storage solutions

More from The Register

next story
Google recommends pronounceable passwords
Super Chrome goes into battle with Mr Mxyzptlk
Infosec geniuses hack a Canon PRINTER and install DOOM
Internet of Stuff securo-cockups strike yet again
Snowden, Dotcom, throw bombs into NZ election campaign
Claim of tapped undersea cable refuted by Kiwi PM as Kim claims extradition plot
Reddit wipes clean leaked celeb nudie pics, tells users to zip it
Now we've had all THAT TRAFFIC, we 'deplore' this theft
Apple Pay is a tidy payday for Apple with 0.15% cut, sources say
Cupertino slurps 15 cents from every $100 purchase
YouTube, Amazon and Yahoo! caught in malvertising mess
Cisco says 'Kyle and Stan' attack is spreading through compromised ad networks
TorrentLocker unpicked: Crypto coding shocker defeats extortionists
Lousy XOR opens door into which victims can shove a foot
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.