Feeds

Silverlight finally becomes popular ... with crims

Angler exploit kit targets Redmond's unloved rich web application kit

Protecting users from Firesheep and other Sidejacking attacks with SSL

Silverlight has become a choice target for VXers who are foisting nasty exploit kits (EKs) on users through hacked advertising networks.

Attacks targeting Silverlight have spiked since 23 April as attackers look for web platforms to target now that Java and Flash have cleaned up their acts a bit.

Cisco lead threat researcher Levi Gundert (@levigundert) and his team reported the spike in attacks foisting the Angler exploit kit and said Silverlight had become the "drive-by flavour of the month" which would likely catch on as a trend in criminal circles.

"Exploit kit owners are adding Silverlight to their update releases, and since 23 April we have observed substantial traffic - often from malvertising - being driven to Angler instances partially using Silverlight exploits," Gundert said in a research post.

"We should expect these existing Silverlight exploits to proliferate through other exploit pack families in the near future as threat actors copy code from each other and release updates."

The attacks through the unnamed ad network were largely successful going by "extensive" global DNS requests to Angler exploit kit landing pages detected by Cisco bods. A commendable 10 percent of unpatched victims were estimated to have been bagged in the attacks.

Crims may enjoy lasting profit by popping Silverlight users Gundert said if Redmond kept to its life cycle to maintain the targeted version 5 until October 2021.

ad exchange screenshot

Shifting cross hairs may yield better results for EKers as vulnerabilities in Adobe Flash and Java became fewer and more efficiently detected.

There was also ample financial incentive to continue development as some exploit kits were thought to rake in more than $US30,000 a month to maintainers.

Angler relied on Silverlight vulnerabilities patched in December and could also target unpatched Adobe Flash instances, and contained a dormant Java component that was not triggered.

The trojan payload which opened a data slurping link to Brazil was foisted on victims using encrypted Silverlight or Flash exploits only after multiple web redirections.

Cisco did not release the names of compromised websites serving the exploit kit but the use of Silverlight by online film factory NetFlix may have whetted the crims' appetite to migrate cross hairs to the platform.

The Angler exploit kit maintainers were thought to be the same crew behind the infamous Reveton ransomware and first integrated Silverlight into their wares sometime in November. ®

The next step in data security

More from The Register

next story
Israeli spies rebel over mass-snooping on innocent Palestinians
'Disciplinary treatment will be sharp and clear' vow spy-chiefs
Infosec geniuses hack a Canon PRINTER and install DOOM
Internet of Stuff securo-cockups strike yet again
'Speargun' program is fantasy, says cable operator
We just might notice if you cut our cables
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
Hackers pop Brazil newspaper to root home routers
Step One: try default passwords. Step Two: Repeat Step One until success
Greater dev access to iOS 8 will put us AT RISK from HACKERS
Knocking holes in Apple's walled garden could backfire, says securo-chap
Microsoft to patch ASP.NET mess even if you don't
We know what's good for you, because we made the mess says Redmond
prev story

Whitepapers

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.
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.
Security and trust: The backbone of doing business over the internet
Explores the current state of website security and the contributions Symantec is making to help organizations protect critical data and build trust with customers.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.