W32.Downadup.B outbreaks during the holiday season

Symantec recommends that users should update the patches immediately to handle the vulnerabilities in remote code execution for Microsoft Windows Server Service RPC.

W32.Downadup.B outbreaks during the holiday season Picture 1 List of top 10 countries in terms of the number of W32.Downadup.A virus infections

Symantec security experts said the percentage of computers infected with new variants of the vius W32.Downadup category increased sharply during the past year's holiday season. According to Symantec, W32.Donwadup is a very dangerous malicious code and one of the most powerful reproductive worms they have seen in years. This is reflected in the way that this worm easily exploits vulnerabilities from users using operating systems that have not patched Windows XP SP2 and Windows 2003 SP1. Other worms that have spread over the last few years have often attacked older versions of operating systems, which are increasingly used less in the world.

Symantec's survey data show that China and Argentina are the most infected areas of this dangerous virus, while East Asia and South America are the main areas infected by this virus. On the overview level, Symantec has detected more than 3 million IP addresses that are infected by the W32.Downadup.A virus.

Of about 3 million infected by this W32.Downadup.A, Symantec opted to arrange for infections that proved successful in exploiting the vulnerability, isolating infected systems with the number of attacks. work up to 10,000. According to this criterion, only more than 1,100 infected systems need to be isolated. Most have an attack range of between 10,000 and 50,000. In particular, there are two systems in the Argentine region recording more than 100,000 successful attacks.