Saturday, June 23, 2012

Windows 8 - Gonna Be Great Challenge for Malware Writers



Microsoft™s security researcher believe that upcoming operating system, Windows 8 is a step forward in security and Windows 8 will be far better at protecting against malware than it’s predecessors.

Chris Valasek, a senior security research scientist at development testing firm Coverity, began examining the security features of Windows 8 last autumn, before the consumer previews of the upcoming revamp of the new Microsoft OS came out.

"There are always going to be vulnerabilities but you can make it difficult to leverage vulnerabilities to write exploits." One major change between Windows 7 and 8 is the addition of more exploit-mitigation technologies, however. Windows Memory Managers (specifically the Windows Heap Manager and Windows Kernel Pool Allocator) are designed to make it far harder for attackers to exploit buffer-overflow vulnerabilities and the like to push malware onto vulnerable systems.


 The "security sandbox" for applications for Windows 8 will also be a great step forward. "These new Windows 8 Apps will be contained by a much more restrictive security sandbox, which is a mechanism to prevent programs from performing certain actions," Valasek explains. 

"This new App Container provides the operating system with a way to make more fine-grained decisions on what actions certain applications can perform, instead of relying on the more broad ‘Integrity Levels’ that debuted in Windows Vista/7.

Windows 8 also comes with a new version of Internet Explorer, Microsoft's browser software. Internet Explorer 10 will come with a mode that disables support for third-party plug-ins such as Flash and Java.
So, Friends I recommend you all to go for Windows 8, than its previous versions which are more prone to Malware attacks.

Monday, June 11, 2012

Flame Spy Virus Going To Suicide


Flame+spy+virus+going+to+Suicide

The creators of the world's most complicated espionage virus Flame have sent a 'suicide' command that removes it from some infected computers. U.S. computer security researchers said on Sunday that the Flame computer virus, which struck at least 600 specific computer systems in Iran, Syria, Lebanon, Egypt, Sudan, Saudi Arabia and the Palestinian Authority, has gotten orders to vanish, leaving no trace.
 
The 20-megabyte piece of malware already had a self-destruct module known as SUICIDE that removed all files and folders associated with Flame, but the purging command observed by Symantec researchers instead relied on a file called browse23.ocx that did much the same thing. According to Symantec, the ‘suicide' command was “designed to completely remove Flame from the compromised computer,” the BBC reports.

Computers infected with Flame, including honeypots, have been routinely contacting its C&C servers to check for new commands. When the C&C servers still owned by Flame’s authors recently sent out a self-destruct code, Symantec detected the command immediately.

Flame was designed to suck information from computer networks and relay what it learned back to those controlling the virus. It can record keystrokes, capture screen images, and eavesdrop using microphones built into computers.

Bots have long contained such self-destruct mechanisms, so it's not surprising that malware as complex and comprehensive as Flame would, too.
 
 
Source:  BBC