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Nimda Virus
Technical name Avast: Win32:Nimda
Avira: W32/Nimda.eml
BitDefender: Win32.Nimda.A@mm
ClamAV: W32.Nimda.eml
Eset: Win32/Nimda.A
Grisoft: I-Worm/Nimda
Kaspersky: Net-Worm.Win32.Nimda or I-Worm.Nimda
McAfee: Exploit-MIME.gen.ex
Sophos: W32/Nimda-A
Symantec: W32.Nimda.A@mm
Type Multi-vector worm
Point of Origin China
Operating system(s) affected Windows 95XP
Written in English

Nimda is a computer worm, also a file infector. It quickly spread, surpassing the economic damage caused by previous outbreaks such as Code Red. Nimda utilized several types of propagation techniques and this caused it to become the Internet’s most widespread virus/worm within 22 minutes.

The worm was released on September 18, 2001.[1] Due to the release date, exactly one week after the attacks on the World Trade Center and Pentagon, some media quickly began speculating a link between the virus and Al Qaeda, though this theory ended up proving unfounded.

Nimda affected both user workstations (clients) running Windows 95, 98, Me, NT, 2000 or XP and servers running Windows NT and 2000.

The worm's name origin comes from the reversed spelling of it, which is "admin".

F-Secure found the text[2] "Concept Virus(CV) V.5, Copyright(C)2001 R.P.China" in the Nimda code, suggesting its country of origin.

Methods of infection[edit]

Nimda was so effective partially because it—unlike other infamous malware like the Morris worm or Code Red—uses five different infection vectors:

  • via email
  • via open network shares
  • via browsing of compromised web sites
  • exploitation of various Microsoft IIS 4.0 / 5.0 directory traversal vulnerabilities. (Both Code Red and Nimda were hugely successful exploiting well known and long solved vulnerabilities in the Microsoft IIS server.[3])
  • via back doors left behind by the "Code Red II" and "sadmind/IIS" worms.

See also[edit]


  1. ^ https://www.cert.org/historical/advisories/CA-2001-26.cfm CERT first released an advisory on the worm on September 18, 2001
  2. ^ http://www.f-secure.com/v-descs/nimda.shtml
  3. ^ http://seifried.org/lasg/introduction-to-security/

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Nimda — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
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3 news items

Wed, 20 Aug 2014 20:22:30 -0700

软件漏洞每时每刻都在被发现,最关键的是确保你的服务器一直保持最新的安全补丁。这意味着需要跟踪所有那些你下载、安装、和忘记的很酷的工具,比如我发现服务器前几年安装的一个PHP相册软件就充满了安全漏洞。至今仍 ...
Fri, 01 Aug 2014 04:37:30 -0700

Fast jeder hat sich schon einmal einen Computervirus oder ein Schadprogramm eingefangen. Ganz aktuell ist sogenannte "Ransomware" im Umlauf, bei der der Nutzer damit erpresst wird, seine Daten freizukaufen. Viren gibt es bereits seit mehr als 20 ...
Tue, 29 Jul 2014 18:41:15 -0700

用心的安全管理员在病毒者作出反应之前能够查出“红色代码”和“Nimda”病毒的。 此外,一般来说,由器位于你的网络的边缘,并且允许你看到进出你的网络全部通信的状况。 上一篇:WinAircrackPack破解你邻居家的无线WIFI密 ...

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