It looks like that the Perfidious Albion is not what one should exactly define a Paradise for Mobile Security. Not only the echoes of the Scandal concerning “voicemail hacking” led the infamous tabloid News Of the World to close on Sunday, the 10th of July 2011, and Rebekah Brooks to resign as CEO of News International today; but also the flow of events has unexpectedly brought mobile security issues to the attention of a wider audience, no more confined to the sole and exclusive attention of information security professionals.
This is partially due to the relative easiness in implementing similar hacking techniques in mobile communications, which is raising doubts and misgivings in many other countries. As a matter of fact, as actually happened, voicemail hacking is relatively easy to implement and is based, as usual, on two factors:
- From the user perspective, on the poor attention for default (in)security settings;
- From the operator perspective, on the necessary trade-off between security, user experience, and convenience, (almost) always favoring the latter, which turns out not to be an optimal choice from a security perspective.
A lethal mix wich may be quite easily exploited by a balanced blend made of (little) hacking and (a lot of) social engineering. At this link a really complete and interesting description very helpful to understand how relatively easy is to perform voicemail hacking with some U.K. operators (but keep in mind that procedures vary from Operator to Operator). Accorrding to the above quoted article, in theory, it is possible to elude the meshes of the security procedures of the operators, simply calling the voicemail of the victim impersonating the legitimate user, claiming to have forgotten the PIN and voila, that’s it!
Voicemail hacking does not need further components, but unfortunately is not the only issue that may happen: in theory entire conversations may be hijacked (and unfortunately it is something we are quite familiar to, here in Italy). The Security Process of a phone conversations is an end-to-end chain, inside which technology is only a component, and the human factor is the weakest link. In this context weak means leak so that often it happens that some information that should not be disclosed are delivered to media (even if irrelevant to any ongoing investigations) with devastating aftermaths for investigations themselves and for victims’ privacy.
The scenario is further complicated with the new generation of smartphones, where technology (and the ongoing process of Consumerization of Information Technology) leaves virtually no limits to the imagination of attackers: not only voicemail hacking, but also mobile malware (a threat which does not need the unintended cooperation of the Operator) capable of extracting any information from devices. The dramatic events in U.K. involved using stolen data for squalid journalistic purposes, but, since mobile devices are nowadays indispensable companions of our everyday lives, nothing prevents, in theory, to use the same or different methods to steal other kinds of information such as confidential data, banking transaction identifiers, etc… Do you really need a confirm? For instance the recent evolution of the Infamous ZiTMo mobile malware that has just landed on Android (the continuing metamorphosis of this malware is really meaningful: born on the Windows platform, it has rapidly spread on Windows CE, Symbian, and now, last but not least, Android). Since it is expected that 5.6% of iPhones/Android handsets is going to be infected in the next 12 months, there is much to worry. In this context what happened in U.K. may constitute a dangerous precedent and a dramatic source of inspiration for organized cybercrime.
Fears that similar occurrences could happen in other countries are rapidly spreading. As a consequence some countries are moving fast to prevent them.
In the U.S., in wake of U.K. Hacking, Representative Mary Bono Mack, a California Republican who chairs the House subcommittee on commerce, manufacturing and trade, is contacting handset manufacturer companies including Apple, Google, Research in Motion, and wireless companies as well, such as AT&T, Verizon Wireless and Sprint Nextel, to determine if there are any vulnerabilities in cell phones or mobile devices which can be exploited by criminals and other unscrupulous individuals. Clearly the final target is to prevent similar events from ever happening in the United States.
For the Chronicle, on June 13 Bono Mack released draft legislation which aims to tighten data security for companies victims of data breaches. Under the proposal, companies that experience a breach that exposes consumer data would have 48 hours to contact law enforcement agencies and begin assessing the potential damage.
Immediately after U.S. Attorney General Eric Holder is considering investigation into News Corp. for the same reson.
Anyway U.S. is not the only country worried about, as similar concerns are raising in Canada, and I may easily imagine that other countries will soon deal the same stuff.
A final curious notice: a further confirm that U.K. is not the paradise for mobile security came this morning when I stumbled upon this wiki which happily shows how to hack a Vodafone femto cell (just released to public) in order to, among the other things, intercept traffic, perform call frauds (place calls or send SMS on on behalf of somebody else SIM card).
The best (or the worst, it depends on the points of view) is yet to come…
- How not to get your phone hacked (blogs.journalism.co.uk)
- Hacking into U.S., U.K. phones easier than in Canada, but remain wary (canada.com)
- Lawmakers Question Cell Phone Privacy In Wake Of Hacking Scandal (techdailydose.nationaljournal.com)
It looks like the consumerization of warfare is unstoppable and getting more and more mobile. After our first post of Jume the 16th, today I stumbled upon a couple of articles indicating the growing military interest for consumer technologies.
Network World reports that the National Security Agency is evaluating the use of COTS (Commercial Off-The-Shelf) products for military purposes and is evaluating several different commercially available smartphones and tablets, properly hardened and secured. The final goal is to have four main devices, plus a couple of infrastructure support services. Meanwhile, trying to anticipate the NSA certification process, U.S. Marines are willing to verify the benefits of a military use of smartphones and consequently issued a Request For Information for trusted handheld platforms.
In both cases, the new technologies (smartphones and tablets) are preferred since they are able to provide, in small size and weight, the capability to rapidly access information in different domains (e.g., internet, intranet, secret), geolocation capabilities which are useful in situation awareness contexts, and , last but not least, the capability to connect with different media (eg, personal area network [PAN], wireless local area network [LAN], wide area network [WAN]).
Nevertheless, in a certain manner, the two approaches, albeit aiming to the same objective, are slightly different. NSA is evaluating the possibility to harden COTS in order to make them suitable for a military use, but since this process of hardening, certification and accreditation may take up to a couple of years, which is typically the life cycle of a commercial smartphone or tablet (it sounds quite optimistic since one year is an eternity for this kind of devices), the RFI issued by the Marines Corps is soliciting for system architectures and business partnerships that facilitate low-cost and high-assurance handhelds, where high-assurance means at least meeting the common criteria for evaluated assurance level (EAL) of 5+ or above. From this point of view the Marines’ approach seems closer to (and hence follows) the approach faced by the U.S. Army which is already testing iPhones, Android devices and tablets for us in war (a total of 85 apps, whose development took about $4.2 million, we could nearly speak about a Military iTunes or Military Android Market!).
But the adoption of consumer technologies does not stop here and will probably soon involve also the use of technologies closely resembling the Cloud. As a matter of fact, the NSA plans to develop in the near future a secure mobile capability, referred to as the “Mobile Virtual Network Operator,”, which will be be able to establish a way to provide sensitive content to the military and intelligence “in a way that roughly emulates what Amazon does with Kindle”, as stated by said Debora Plunkett, director of the NSA’s information assurance directorate, speaking at the Gartner Security and Risk Management Summit 2011 (but the NSA will not be the first to pilot this kind of technology since the NATO is already adopting Cloud Computing).
Probably this is only one side of the coin, I’m willing to bet that the consumerization of warfare will soon “infect” armies belonging to different countries and consequently the next step will be the development of weapons (read mobile military malware) targeted to damage the normal behavior of the military smartphones and tablets. On the other hand the Pentagon has developed a list of cyber-weapons, including malware, that can sabotage an adversary’s critical networks, so it is likely that these kind of weapons will soon affect mobile devices…
- NSA wants bulletproof smartphone, tablet security (infoworld.com)
- Consumerization of Warfare (paulsparrows.wordpress.com)
- NSA Reveals Cloud Plans, May Open-Source Some of Its Software (readwriteweb.com)
The last malware inside the Android Market, dubbed Plankton, has been discovered by the same team which discovered DroidKungFu led by Xuxian Jiang, Assistant Professor at North Carolina State University. Although the brand new malware does not root the device, it has the bad habit to hide itself inside familiar apps related to the popular game Angry Birds. The suspected apps were removed on 6/5/2011, but since the malware leverages a new evasion technique which allowed it to stay in the market for more than 2 months without being detected by current mobile anti-malware software, but being downloaed more than 100.000 times.
Plankton is included in host apps by adding a background service: when the infected app runs, it will bring up the background service which collects information, including the device ID as well as the list of granted permissions to the infected app, and send them back to a remote server discovered by Sophos to be hosted in the Amazon Cloud.
The server replies with a URL that is used to download an additional JAR file with custom code that is loaded by the downloader.
Once the JAR file is downloaded, Plankton uses a technique for loading additional code from non-Market websites demonstrated by Jon Oberheide about a year ago, providing a potential attacker with a method of circumventing checks of application functionality by Google or by another Android Market provider.
The downloaded code launches another connection to the Command server and listens for commands to execute.
Although this malware does not root the phone, its approach of loading additional code does not allow security software on Android to inspect the downloaded file in the usual “on-access” fashion, but only through scheduled and “on-demand” scans. This is the reason why the malware was not discovered before.
As a consequence the pressure on Google is building on two fronts: on one side, users are demanding better security and on the other side security vendors are asking for better operating system interfaces to make security software more effective against the ever-increasing tide of Android malware.
- Plankton malware drifts into Android Market (nakedsecurity.sophos.com)
Not even a week after the light version of DroidDream, a new nightmare rises from the Android Market to menace the dreams of glory of the Google Mobile OS (which has just confirmed his #1 Rank on the comScore April 2011 U.S. Mobile Subscriber Market Share Report).
Curiously, also the new malware, discovered by F-Secure, and dubbed Android/DroidKungFu.A, “has its roots” on DroidDream since it uses the same exploit, rageagainstthecage, to gain root privilege and install the main malware component.
Once installed, the malware has backdoor capabilities and is able to: execute command to delete a supplied file, execute a command to open a supplied homepage, download and install a supplied APK, open a supplied URL, run or start a supplied application package.
Of course, who is familiar with Android malware may easily imagine the next step of the infection: the malware is in fact capable to obtain some information concerning the device and send them to a remote server: The collected information include: IMEI number, Build version release, SDK version, users’ mobile number, Phone model, Network Operator, Type of Net Connectivity, SD card available memory, Phone available memory.
In few words, the device is turned into a member of a botnet (without realizing it we are closer and closer to Phase 4 of Mobile Malware, consult slide 9 of my presentation for the different phases of Mobile Malware).
Guess where the malware was detected first? Of course from some parallel Markets in China, at least according to some Researchers of the North Carolina University who detected two infected applications in more than eight third-party Android app stores and forums based in China. Nothing new under this sun of June. Luckily the researchers haven’t found infected apps in non-Chinese app stores… At least so far.
As previously stated DroidKungFu takes advantages of the same vulnerabilities than DroidDream, but this time the situation seems to be much worse. As a matter of fact it looks like DroidKungFu is capable of avoiding detection by security software.
The malware makes its best with Android 2.2 and earlier, but the owners of later versions of Android are not entirely safe: the security patches severely limit DroidKungFu, but the malware is still able to collect some user data and send them to a remote site.
Again, follow basic, common-sense guidelines for smartphone security in order to mitigate the risks of infection (here you may find some useful suggestions), even because Google Wallet is at the gates and I dare not even think to the aftermaths of a malware leveraging vulnerabilities on the Secure Element…
- DroidDream is Back! (paulsparrows.wordpress.com)
There is a new nightmare on the Android Market, and again many Android devices are not going to have a good awakening.
The last security advice for the Google Mobile OS comes from Lookout, which has discovered a new variant of the infamous DroidDream, the first malware conveyed by the Official Android Market capable of infecting at the beginning of March, according to Symantec, between 50.000 and 200.000 devices.
This time the brand new version, dubbed DroidDreamLight, was found in 26 repackaged applications from 5 different developers distributed in the Android Market. According to Lookout DroidDreamLight is no less than is “noble” predecessor, since was able to affect between 30.000 and 120.000 users.
According to Lookout, the malicious components of DroidDream Light are invoked on receipt of an android.intent.action.PHONE_STATE intent (e.g. an incoming voice call). As a consequence DroidDream Light does not depend on manual launch of the installed application to trigger its behavior. The broadcast receiver immediately launches the <package>.lightdd.CoreService which contacts remote servers and supplies the IMEI, IMSI, Model, SDK Version and information about installed packages. It appears that the DDLight is also capable of downloading and prompting installation of new packages, though unlike its predecessors it is not capable of doing so without user intervention.
The list of the infected applications (already removed from Google) is available at the original link. I must confess I could not help noticing the rich amount of “hot” applications, which confirm (unfortunately) to be a lethal weapon for carrying malware.
This event will raise again the concerns about the security policies on the Android Market, and about the apparently unstoppable evolution of the mobile threat landscape which has brought for the Android a brand new malware capable of sending data to a remote server. A further step closer to a mobile botnet even if, at least for this time, with limited capabilities of auto-installing packages,.
I will have to update my presentation, meanwhile do not forget to follow the guidelines for a correct mobile behavior:
- Avoid “promiscuous” behaviours (perform rooting, sideloading or jaibreaking with caution, most of all in case of a device used for professional purpose);
- Do not accept virtual candies from unkown virtual individuals, i.e. only install applications from trusted sources, always check the origin and their permissions during installation;
- Beware of unusual behavior of the phone (DroidDream owes its name to the fact that he used to perform most of its malicious action from 11 P.M to 8 A.M.);
- Beware of risks hidden behind social Network (see my post of yesterday on mobile phishing);
- Use security software;
- Keep the device updated.
- DroidDreamLight malware hits dozens of Android apps (venturebeat.com)
- Malicious apps removed from Android Market (news.cnet.com)
- Malicious apps removed from Android Market (news.cnet.com)
- Lookout Teams Pegs 25 Android Market Apps Infected With DroidDreamLight Malware (androidpolice.com)
- 30,000 to 120,000 Android Users Affected by New Variant of Droid Dream Malware (readwriteweb.com)
- New Android malware spotted: DroidDream Light (intomobile.com)
The title of this post is not a subset of the famous Peter Weir’s Movie “The Year Of Living Dangerously“, featuring Mel Gibson and Sigourney Weaver, but rather refers to the dangerous months which the Android is living, from the second half of 2010 to this first half of 2011, which saw a dramatic increase in Android Malware.
I enjoyed in summarizing in a single picture the mobile malware which affected Google Mobile OS from August 2010 to the present day. As shown the results are not encouraging and seems to confirm, in a qualitative form, the 400% increase in mobile malware (in six months) recently stated by Juniper Networks: un the second half of 2011 we assisted mainly to variants of the first Trojan. In the first half of 2011 the landscape has become much more complicated with mobile malware tailored “for different needs”.
So far the threats are can be divided essentially into two categories:
- Malware capable of stealing data, sending them to a remote C&C, which in a mobile platform may have worst consequences since it may send remote data to a C&C Server);
- Malware capable of sending SMS to premium rate numbers without the user permission (and awareness).
In many cases the malware was downloaded by parallel markets (most of all from China and Russia), with often the pornography acting like a decoy for the unfortunates, hence showing the risks connected with sideloading, that is the practice to enable installation of applications downloaded from external markets.
Two examples were particularly meaningful: the example of Geinimi, which showed all the features of a Botnet. And the example of DroidDream which bypassed all the security control of Android Market and infected something between 50.000 and 200.000 users according to Symantec and were remotely removed by Google, thus prefiguring a new security model which remotely manages the security functions of endpoint (and everything suggests that this trend will soon spread to more traditional endpoints: just today I stumbled upon this really interesting article).
By the way… Just today, three German security researchers discovered a serious flaw on the ClientLogin Authentication Protocol affecting almost all the Android powered devices… Ok it is not a malware, but the security concerns for the Google Mobile Operating System are more relevant than ever…
- 400 Percent Increase In Android Malware; Mobile Security Threats At Record High (techcrunch.com)
- If The Droid Gets The (China’s) Flu (paulsparrows.wordpress.com)
- Chronicles Of The Android (paulsparrows.wordpress.com)
The thought of this night is dedicated to yet another couple of android malwares detected (as usual) in China.
It was a bit of time that the droid was not sick, however, as the change of season is often fatal to humans, so it is for the Androids which caught two new infections in few days.
On May, the 11th, it was the turn of a new Trojan embedded, once again as in the case of the notorious DroidDream (but I’d rather say that malware is becoming a nightmare for the Google Creature) in official applications inside the Android Market. All the applications were published by the same developer, Zsone, and were suddenly removed by Google.
The Trojan, which affects Chinese users, is characterized by the ability to subscribe users in China to premium rate QQ codes via SMS without their knowledge. QQ codes, used primarily in China, are a form of short code that can subscribe users to SMS update or instant message services. The malware was embedded in 10 apps by the developer named Zsone available on the Android Market and alternative markets.
Once the user starts the app on their phone, the app will silently send an SMS message to subscribe the user to a premium-rate SMS service without their authorization or knowledge. This may result in charges to the affected phone owner’s mobile accounts. Even if the threat affects Chinese Android phone owners who downloaded the app from the Android Market, the total number of downloads attributed to this app in the Android Market has appeared to be under 10,000. All instances of the threat have been removed from the market.
On May, the 12th, it was the turn of ANDROIDOS_TCENT.A, discovered by Trend Micro. This malware, which only affects China Mobile subscribers (the state-owned service provider considered the world’s largest mobile phone operator), arrived to users through a link sent through SMS, whose message invited the China Mobile users to install a patch for their supposedly vulnerable devices by accessing the given link, which actually led to a malicious file (fake AV have landed on mobile devices as well).
The malware is capable to obtain certain information about the affected devices such as IMEI number, phone model, and SDK version and connects to a certain URL to request for an XML configuration file.
Two very different infections, having a common origin from China: the first example emphasizes once again the breaches into the security and reputation model of the Android Market. The second one features a well established infection model who is rapidly gaining credit (and victims) also in the mobile world: the SMS phishing. I think we will often hear speaking about in the next months.
The two malware infections came a couple of days after the Malicious Mobile Threats Report 2010/2011 issued by Juniper Networks which indicated a 400% increase in Android malware since summer 2010 and other key findings, several of which were clearly found in the above mentioned infections:
- App Store Threats: That is the single greatest distribution point for mobile malware is application download, yet the vast majority of smartphone users are not employing an endpoint security solution on their mobile device to scan for malware;
- Wi-Fi Threats: Mobile devices are increasingly susceptible to Wi-Fi attacks, including applications that enable an attacker to easily log into victim email and social networking applications
- 17 percent of all reported infections were due to SMS trojans that sent SMS messages to premium rate numbers, often at irretrievable cost to the user or enterprise
- Device Loss and Theft: according to the author of the report: 1 in 20 among the Juniper customer devices were lost or stolen, requiring locate, lock or wipe commands to be issued
Will it also be for these reasons that Smartphone security software market is expected to reach $2.99 billion by 2017? Maybe! Meanwhile I recommend to be very careful to install applications from parallel markets and in any case (since we have seen that this is not enough) to always check the application permissions during installation. Moreover, do not forget to install a security software if possible as the 23% of the droid users (among which there is me) does.
- Android market affected by SMS Trojans (nakedsecurity.sophos.com)
- Security Alert: Zsone Trojan found in Android Market (mylookout.com)
- Update: Android Malware DroidDream: How it Works (mylookout.com)
The Apple and the Android (almost) never agree in anything, but the issue of the Location Tracking has done the miracle and if there is one only point that Cupertino and Mountain View have in common, it is just the bad habit to track user’s position without his/her knowledge.
After the well known issue of iPhone hidden (so to say) location tracking, Wired was able to discover why Apple devices collect these kind od data, unleashing 13-page letter sent by Apple’s general counsel Bruce Sewell in July 2010, explaining its location-data-collection techniques. The letter was written in response to a request from Congressmen Joe Barton and Edward Markey asking for Apple to disclose such practices (Incidentally, Markey authored the “Do Not Track” bill to stop online companies from tracking children).
Although no comment so far has arrived from Apple, I was disappointed in discovering, from a Cisco Blog Post, dealing with the same argument, that a similar
bad habit collection has been detected for Google’s Android (at least the Android needs the root permission to grab the data).
In both cases the alleged main purpose of this data collection is to provide better location services. Instead my feeling is that the main benefit in this situation is not for the user, but for the marketing and/or advertising agencies which could come in possession of the data.
Interesting to notice the iPhone 3GS Software License Agreement states that:
By using any location-based services on your iPhone, you agree and consent to Apple’s and its partners’ licensees’ transmission, collection, maintenance, processing and use of your location data to provide such products and services.
Location data – Google offers location-enabled services, such as Google Maps and Latitude. If you use those services, Google may receive information about your actual location (such as GPS signals sent by a mobile device) or information that can be used to approximate a location (such as a cell ID).
Until now, nothing special, except the fact that Latitude asks for the user’s consent to share the data with the other, which, if I am not wrong, does not occurr for Google Maps. But the interesting point come a some lines below:
In addition to the above, we may use the information we collect to:
- Provide, maintain, protect, and improve our services (including advertising services) and develop new services; and
- Protect the rights or property of Google or our users.
Meanwhile Minnesota Senator Al Franken and the attorney general of Illinois are separately pressing Apple and Google to provide more information about the location data they collect about their end users…
- Lawmakers quiz Apple, Google about location tracking (infoworld.com)
- Grab Your Data? There’s An App For That! (paulsparrows.wordpress.com)
- IPhone Stored Location Even if Disabled (online.wsj.com)
- Apple, Google Collect User Data (online.wsj.com)
- iPhone Location Tracking: Important, Even if it Doesn’t Matter to You (blogs.cisco.com)
I know it is late and I am quite tired after a day of work. Still few seconds (and energies) to comment a new Gartner Report confirming what previously indicated by ABI Research and IDC, according to which, the Google Creature will command Nearly Half of Worldwide Smartphone Operating System Market by Year-End 2012.
Worldwide Mobile Communications Device Sales to End Users by OS (Thousands of Units)
|Market Share (%)||37.6||19.2||5.2||0.1|
|Market Share (%)||22.7||38.5||49.2||48.8|
|Research In Motion||47,452||62,600||79,335||122,864|
|Market Share (%)||16.0||13.4||12.6||11.1|
|Market Share (%)||15.7||19.4||18.9||17.2|
|Market Share (%)||4.2||5.6||10.8||19.5|
|Other Operating Systems||11,417.4||18,392.3||21,383.7||36,133.9|
|Market Share (%)||3.8||3.9||3.4||3.3|
Source: Gartner (April 2011)
In my opinion it worths noticing the inevitable fall of Symbian, the slow but inexorable descent of RIM, and the equally slow growth of Microsoft wich will be able to nearly touch the 20% only in 2015.
The android has every reason to celebrate and nothing better do it properly than this video in which an HTC Desire solves a dodecahedron Rubik’s Cube: an HTC desire runs a custom Android app which uses the phone’s camera to take individual images of each of the puzzle’s 12 faces, then processes the information and sends a signal via Bluetooth to the NXT controller,