Feeds

Security researchers scrutinise search engine poisonings

The scareware slinger's cookbook

SANS - Survey on application security programs

The techniques used by unloveable rogues who automate search engine manipulation attacks themed around breaking news to sling scareware have been unpicked by new research from Sophos.

A research paper published on Wednesday by Sophos researchers Fraser Howard and Onur Komili lifts the lid on the search engine optimisation techniques used by hackers to hook surfers into their scams.

Attackers use automated kits to apply blackhat SEO methods – cynically exploiting tragic or salacious breaking news stories – to subvert searches in order to point surfers towards scareware download portals or other scams.

The deaths of celebrities such as Michael Jackson, the release of Google Wave and the marital strife of Sandra Bullock are among the topics which have been used as themes for these attacks in the past. Just about any high-profile breaking news story is fodder for the crooks, so it came as little surprise that the deaths of 39 people in the Moscow metro suicide bombings on Monday have also become themes for the latest run of black-hat SEO techniques.

Cybercrooks behind the scams don't simply sit watching Google Trends or trending topics on Twitter, however. The process is increasingly becoming automated.

Blackhat SEO kits are used to create and manage an search engine manipulation attack. These kits generate manipulated pages stuffed with erroneous keywords, designed to appear prominently in search engine results but which misdirect users to rogue sites.

SEO kits also create networks of thousands of cross­linked pages containing this search­-friendly content on hot­ trending topics, hosted on compromised, legitimate websites. Often these kits will be automatically updated with information about the latest breaking news stories by consulting resources such as Google Trends.

These blackhat tactics are commonly used to point surfers searching for information about popular subjects towards scareware portals that inundate users with bogus security alerts in a bid to trick them into paying for a bogus security product, or installing further malicious code.

Search engine poisoning attacks rely on the need to feed content to search engine crawlers (for subsequent indexing), while at the same time redirecting users who land on the webpage to a malicious site. Most blackhat SEO kits can spot the difference between a search engine visiting their site to crawl for content, a surfer visiting the site via a search engine link, and a computer user visiting the site directly.

Often exploits are redirections that are only triggered when a surfer visits the site via a search engine. The tactic is designed to help keep the hacker misuse of often legitimate sites under the radar of site admins.

Sophos reckons URL filtering and content inspections offer effective protection for businesses against SEO attacks. "Malware distribution through SEO may sound hard to block because of the apparent authenticity of the SEO web pages but there are some effective measures that companies can take to protect themselves," Howard explains.

"By adding detection for the payload, as well as diligent monitoring and filtering in-bound content, network managers can thwart an attack before it reaches the user. Providing detection for all relevant components provides the most effective protection.”

The research paper, Poisoned search results: How hackers have automated search engine poisoning attacks to distribute malware, can be found here (pdf). ®

High performance access to file storage

More from The Register

next story
Obama allows NSA to exploit 0-days: report
If the spooks say they need it, they get it
Samsung Galaxy S5 fingerprint scanner hacked in just 4 DAYS
Sammy's newbie cooked slower than iPhone, also costs more to build
Snowden-inspired crypto-email service Lavaboom launches
German service pays tribute to Lavabit
Mounties always get their man: Heartbleed 'hacker', 19, CUFFED
Canadian teen accused of raiding tax computers using OpenSSL bug
One year on: diplomatic fail as Chinese APT gangs get back to work
Mandiant says past 12 months shows Beijing won't call off its hackers
Call of Duty 'fragged using OpenSSL's Heartbleed exploit'
So it begins ... or maybe not, says one analyst
prev story

Whitepapers

Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
SANS - Survey on application security programs
In this whitepaper learn about the state of application security programs and practices of 488 surveyed respondents, and discover how mature and effective these programs are.