Feeds

Microsoft takes scissors to Srizbi

Botnet's last stand

High performance access to file storage

Microsoft security teams have struck what they hope is a fatal blow at Srizbi, the once-powerful spam botnet that has been fighting for its life since last year's demise of two US-based network providers that offered vital lifelines.

The company's Malicious Software Removal Tool has already proved invaluable in mass disinfections of major pests. In October, for instance, it went after Rustock, another large botnet used to relay spam through hundreds of thousands of infected machines.

Srizbi spreads mostly through trojans that are included in emails. Once clicked on, they install a kernel-mode rootkit that is extremely hard to eradicate. Once one of the world's biggest spam botnets, it faced a setback in November when California McColo was disconnected amid research that showed it was used to host the master channels used to control the rogue network. It is usually detected as Spammer:WinNT/Srizbi.

"We hope to make a positive impact with the addition of Win32/Srizbi into MSRT," Microsoft's Vincent Tiu writes.

This month's MSRT was unleashed on Tuesday, the same day Redmond released patches fixing security vulnerabilities in four of its products. Microsoft warned that "consistent exploit code" for critical remote execution flaws in Internet Explorer was likely, meaning it's probably only a matter of time until attacks in the wild are seen.

The company also plugged critical holes in its Exchange server. Attackers could target the vulnerabilities by sending maliciously crafted emails that caused the machines to shut down or hijacked.

This month's Patch Tuesday also included fixes for less severe vulnerabilities in Microsoft's SQL Server and Office Visio.

For an overview of the patches, head over to this page from Sans.

Not to be outdone, Research in Motion offered a patch for software that allows users to easily install software on their BlackBerry devices. The BlackBerry Application Web Loader suffers from a buffer overflow defect that could allow attackers to remotely install software on a vulnerable system.

Secunia rates the vulnerability "highly critical," the second highest ranking in its five-notch scale. RIM has more about it here. ®

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
Parent gabfest Mumsnet hit by SSL bug: My heart bleeds, grins hacker
Natter-board tells middle-class Britain to purée its passwords
Web data BLEEDOUT: Users to feel the pain as Heartbleed bug revealed
Vendors and ISPs have work to do updating firmware - if it's possible to fix this
OpenSSL Heartbleed: Bloody nose for open-source bleeding hearts
Bloke behind the cockup says not enough people are helping crucial crypto project
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
Experian subsidiary faces MEGA-PROBE for 'selling consumer data to fraudster'
US attorneys general roll up sleeves, snap on gloves
NSA denies it knew about and USED Heartbleed encryption flaw for TWO YEARS
Agency forgets it exists to protect communications, not just spy on them
prev story

Whitepapers

Mainstay ROI - Does application security pay?
In this whitepaper learn how you and your enterprise might benefit from better software security.
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.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Mobile application security study
Download this report to see the alarming realities regarding the sheer number of applications vulnerable to attack, as well as the most common and easily addressable vulnerability errors.