Feeds

Gumblar Google-poisoning attack morphs

Drive-by download juggernaut relocates and picks up speed

Next gen security for virtualised datacentres

A Web attack that poisons Google search results is getting worse, according to security researchers.

The attack first relies on compromising normally legitimate website and planting malicious scripts. US CERT reports that stolen FTP credentials are reckoned to be the main technique in play during this stage of the attack but poor configuration settings and vulnerable web applications might also play a part.

Surfers who visit compromised websites are exposed to attacks that rely on well-known PDF and Flash Player vulnerabilities to plant malware onto Windows PCs.

This malware is designed to redirect Google search results as well as to swipe sensitive information from compromised machines, according to early findings from ongoing analysis.

The SANS Institute's Internet Storm Centre (ISC) adds that the attack has been around for some time but has intensified over recent days. Initially the malware was served up onto vulnerable Windows clients from the website gumblar.cn, which has been offline since Friday. A second domain - martuz.cn - has taken over this key role in the attack, ISC reports.

Web security scanning firm ScanSafe, which was among the first to warn of the rise of the attack, notes that the reference to martuz.cn in more recent attacks has been obfuscated, possibly in an attempt to thwart rudimentary blacklists. "The URI resulting from the injected script might appear as mar"+"tuz.cn instead of just martuz.cn," writes ScanSafe researcher Mary Landesman.

ScanSafe reported on Monday that Gumblar more than trebled (up 246 per cent) over the preceding week. It describes Gumblar as a botnet of compromised websites in a series of blog postings on the attack, which can be found here. Sophos reckons the Gumblar-related malware appeared in 42 per cent of all the newly infected websites it detected last week.

Unmask Parasites has published a more detailed take on the script associated with the attack, named Gumblar after the name of the first domain associated with the assault, here. ®

The essential guide to IT transformation

More from The Register

next story
Goog says patch⁵⁰ your Chrome
64-bit browser loads cat vids FIFTEEN PERCENT faster!
Chinese hackers spied on investigators of Flight MH370 - report
Classified data on flight's disappearance pinched
NIST to sysadmins: clean up your SSH mess
Too many keys, too badly managed
Scratched PC-dispatch patch patched, hatched in batch rematch
Windows security update fixed after triggering blue screens (and screams) of death
Researchers camouflage haxxor traps with fake application traffic
Honeypots sweetened to resemble actual workloads, complete with 'secure' logins
Attack flogged through shiny-clicky social media buttons
66,000 users popped by malicious Flash fudging add-on
prev story

Whitepapers

Best practices for enterprise data
Discussing how technology providers have innovated in order to solve new challenges, creating a new framework for enterprise data.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
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?