Feeds

Microsoft takes scissors to Srizbi

Botnet's last stand

Choosing a cloud hosting partner with confidence

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. ®

Choosing a cloud hosting partner with confidence

More from The Register

next story
You really need to do some tech support for Aunty Agnes
Free anti-virus software, expires, stops updating and p0wns the world
Privacy bods offer GOV SPY VICTIMS a FREE SPYWARE SNIFFER
Looks for gov malware that evades most antivirus
Patch NOW! Microsoft slings emergency bug fix at Windows admins
Vulnerability promotes lusers to domain overlords ... oops
HACKERS can DELETE SURVEILLANCE DVRS remotely – report
Hikvision devices wide open to hacking, claim securobods
Astro-boffins start opening universe simulation data
Got a supercomputer? Want to simulate a universe? Here you go
State Dept shuts off unclassified email after hack. Classified mail? That's CLASSIFIED
Classified systems 'not affected' - but, is this reconnaissance?
prev story

Whitepapers

Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
How to determine if cloud backup is right for your servers
Two key factors, technical feasibility and TCO economics, that backup and IT operations managers should consider when assessing cloud backup.
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?
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.