Pages

4.13.2009

Conficker gang updates worm via peer-to-peer

In the end, the criminals behind the Conficker worm only waited a week to update the malicious program.

On late Tuesday, computers infected with the worm began downloading new commands to modify how the Conficker functions, security firms reported. The latest modifications to the program — also referred to as Downad, Downadup and Kido by different security companies — reactivates the worm's ability to spread using a flaw in Microsoft Windows and redirects most communications through the program's peer-to-peer network, said Stephan Chenette, manager of security research for network-protection firm Websense.

The latest update also causes compromised computer to go to a domain known to host a malicious program known as Waledac. The addition of peer-to-peer networking — a characteristic feature of Waledac and its cousin, the Storm Worm — suggests that the programs share the same creator or that the creators have some sort of relationship, Chenette said.

"Peer-to-peer is going to become a large part of what Conficker will use for updates and command and control," he said. "It is the same thing that Storm and Waledac did."

With the peer-to-peer update, the authors of the Conficker worm dodged the efforts of defenders to prevent the program from getting an upgrade. The mainstream media had focused on April 1 — the day that the previous version of Conficker would start searching through 50,000 random domains daily — as D-Day for the security community. Instead, the authors waited a week and never even used the Internet drop, or rendezvous, point system on which remediation efforts had focused.

Researchers with the Conficker Working Group, formerly called the Conficker Cabal, continued to analyze the latest cod, said Websense's Chenette. The current version also has an expiration date, after which the worm will likely stop trying to spread, but may keep listening for new commands sent through the peer-to-peer network.

"We are all still trying to figure out all the particular details of the new Conficker binary," Chenette said. "We are all trying to put this together — what this is doing and what it is ... As they change their methods, so we have to change they way we do our analyses. It takes a little while, but we will get all the details in time."

source by : http://www.securityfocus.com/brief/942

11 comments:

bisnis internet mengatakan...

just blogwalking, gak mudeng bos,.. he he

tips komputer mengatakan...

thx for your tips,
good luck, boss

bisnis internet mengatakan...

mampir juga ke blog saya ya bro, n kasih komentar ya, syukur mau join ke AW Surveys bersama saya, he he

Anonim mengatakan...

thanks... boz...

eri-communicator mengatakan...

selalu ada kunjungan bila ada waktu dan selalu ada senyum bila berkunjung:)

eri-communicator mengatakan...

informatif banget , sharing ilmu ya bro...thanks

Hikmah San mengatakan...

salam kenal coy!!

kurniawana mengatakan...

ini info baru bagiku dan ternyata masih banyak yang harys kupelajari lagi...thank sdah mengingatkanku dg cara lain..

gdpermana mengatakan...

waahhhh blim nyampe kesini..hehe

@ Coy mengatakan...

post yang menarik.....

Cathlin mengatakan...

Surfing the internet is fun and exciting.
Surfing the internet is fun and exciting but if don’t have a good scan to rid your computer of the bugs it picks up then you will run into some problems. My search for a good scanner led me to the antispyware solution from Search-and-destroy. This is one of the best scans that I’ve ever used and it’s available at http://www.Search-and-destroy.com. I believe that you will like Search-and-destroy Antispyware as much as I do if you give it a try. It works great and cost less than many of the other options you will find when it comes to antispyware scanners.

Posting Komentar