from our newsletter dated March 23, 2009
WORM_Downad.KK –Activates on April Fool’s Day
Dear customers,
Trend Micro would like to caution about a possible widespread infection on April Fool’s day. Please read the details and recommended actions below for your information.
Details
Worm_downad had infected more than 15 million computers, making it one of the widespread infections in recent times.
A new variant of worm_downad (aka Conficker) is expected to be launched on April Fool’s day.
Trend Micro detects this new variant as worm_downad.kk. More information can be found at
WORM_DOWNAD.KK - Technical details. Trend Micro detects this malware starting with pattern file 5.885.00.
Compared to the old variants, worm_downad.kk is more sophisticated. Here are a few of the payloads :
* Connects to various time servers to determine the current date and time.
* Register itself as a system service to ensure auto execution every startup.
* Deletes a registry key to prevent system startup in safe mode.
* Terminates security-related processes (i.e. procexp, regmon, autoruns, gmer etc.)
* Blocks access to security and antivirus websites.
* Generates 50,000 malicious URLs and attempts to connect to around 500 random generated URLs at a time.
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Recommended Action
* Enable Web Threat Protection
* Make sure that you have the latest virus definitions (at least pattern file 5.885 .00 )
* Run a FULL system scan to ensure that malware does not exist on your PC
Recommended Actions from External Sources
* How to protect against internet threats when you surf online?
* How to protect against threats when accessing Webmail?
Best regards,
Trend Micro APAC team
for more info about this infection visit
WORM_DOWNAD.KK - Technical details