Welchia, also known as the " Nachi worm ", is a computer worm that exploits a vulnerability in the Microsoft remote procedure call (RPC) service similar to the Blaster worm.

Apr 3, 2024 · In the summer of 2003, a peculiar computer virus named Welchia began rapidly spreading across the internet, infecting hundreds of thousands of Windows PCs and servers worldwide. But this was no ordinary malware. The Welchia worm, also known as Nachi, appeared to have a noble mission – to seek and destroy another nasty worm called Blaster.

Aug 19, 2003 · It may be a friendly worm with good intentions but the W32.Welchia.Worm squirming through corporate networks has become a nightmare for IT administrators already struggling to clean up last week’s “Blaster” virus.

The purpose of this paper is to examine the Welchia worm and recount the actual events as experienced by myself and my colleagues while dealing with Welchia infection.

Aug 9, 2019 · In August 2003, hundreds of thousands of PCs were infected by the Blaster worm, which caused computers to reboot every 60 seconds. As Microsoft worked to halt the spread of Blaster, so did the Robin Hood-esque creator of the Welchia worm.

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What is the Welchia worm aka MSBlast.D, LoveSan.D or Nachia? The Welchia (MSBLAST.D or Nachi) worm infects machines via network connections. It can attack entire networks of computers or one single computer connected to the Internet.

Welchia remains one of the most unusual worms in history, as it was designed to help instead of hurt. A response to the Blaster worm, Welchia infected computers, cleared out the Blaster...

The Welchia worm, also known as the Nachia worm, is a computer worm that exploits a vulnerability in the Microsoft Remote procedure call (RPC) service similar to the Blaster worm. However unlike Blaster, it tries to download and install security…

Worm:W32/Welchi is an unusual malware in that it attempts to disinfect the computer system from Worm:W32/Lovsan infections. It also attempts to patch a vulnerability used by the Lovsan worm to propagate.