Top 10 Computer Virus

Top 10 Computer Virus

1.) Melissa is a macro virus that appeared in spring of 1999. The virus received a great deal of media attention and like Michelangelo caused little damage, although it was very widespread. Melissa began spreading exactly one month before CIH released its payload, causing hundreds of millions of dollars in damage in East Asia. It is one of the first viruses to achieve "rock star" status.


Name: Melissa

Type: Word macro virus

Creator/Author: "Kwyjibo"
Date Discovered: 1999.03.26
Place of Origin: Aberdeen, New Jersey USA
Source of Language: Visual Basic
Platform: MS Word on MS Windows
File Type: doc
Infection Length: One Macro Module
Reported Cost: $1.1 Billion

Melissa virus

2.) Beagle, also known as Bagle is a large family of email worms with many variations. Beagle is notable for the fact that many variants came in password-protected .zip files, with the password usually contained in the body of the message. 

Name: Bagle:
Type: Mass-mailer worm
Creator/Author: Unknown
date Discovered: 2004.01.18
Place of Origin: N/A
Source of Language: Delphi
Platform: MS Windows
File Type: .exe, .pif, .zip*
Infection Length: 15,872 bytes
Reported Cost: $896 million

Bagle

3.) Sasser is an Internet worm that probably caused billions of dollars of damage in 2004. It was created by a Computer science student in Germany who was also behind Netsky. While there was no intentionally destructive payload, Sasser did cause many computers to slow down or crash, causing some high profile damage.


Name: Sasser
Type: Internet Worm
Creator/Author: Sven Jaschan
Date Discovered: 2004.04.30
Place of Origin: Waffensen, Germany
Source of Language: C++
Platform: MS Windows
File Typpe: .exe
Infection Length: 15,872
Repoeted Cost: $18.1 billion

Sasser

4.)The CIH virus, also known as Chernobyl, was first discovered in 1998 June in Taiwan. According to the Taipei authorities, Chen Ing-hau wrote the CIH virus. The name of the virus derived from his initials. It did most of its damage within a few months of ExploreZip and Melissa's appearance. Contrary to the popular belief, the payload trigger date had nothing to do with the Chernobyl nuclear disaster.


Name: CIH Virus
Type: File Virus
Creator/Author: Chen Ing Hau
Date Discovered: 1998.06.25
Place of Origin: Taipei, Taiwan
Source of Language:Assembly
Platform: MS Windows
File Type: exe
Infection Length: 1,000 Bytes
Reported Cost: $ 250,000,000

CIH virus

5.) CodeRed is a worm that caused possible billions of dollars of damage in the summer of 2001. It contains the text string "Hacked by Chinese!", which is displayed on web pages that the worm defaces. It is also one of the few worms able to run entirely in memory, leaving no files on the hard drive or any other permanent storage (although some variants do).


Name: Code Red
Type: Internet Worm
Creator/Author: Unknown
Date Discovered: 2001.07.13
Place of Orgin: China
Source of Language: Assembly
Platform: MS IIS Server
File Type: N/A
Infection Length: N/A
Reported Cost: $2.75 Billion

Code Red

6.) The Blaster worm, also known as Lovesan, created havoc in late summer of 2003 with widespread Distributed Denial of Service (DDoS) attacks, with damage totaling in the hundreds of millions. It is also notable for two hidden text strings, one that says "I just want to say LOVE YOU SAN!" (from which it receives one of its aliases) and a message to Microsoft CEO Bill Gates. It appeared within less than a month before one of the major variants of the Sobig worm.


Name: MS Blast
Type: Internet Worm
Creator/Author: Unknown
Date Discovered: 2003.08.11
Place of Origin: N/A
Source of Language: C
Platform: MS Windows
File Type: .exe
Infection Length: N/A
Reported Cost: $320 Million

MS Blast

7.) Loveletter worm, memorable for its "LOVE-LETTER-FOR-YOU" attachment and "ILOVEYOU" subject line, was one of the early worms to gain a great deal of media attention. It was also one of the first to reportedly reach a multi-billion dollar damage toll.


Name: ILOVEYOU
Type: Multiple vector worm
Creator/Author: "Spyder"
Date Discovered: 2000.05.04
Place of Origin: Makati, Philippines
Source of Language: Visual Basic
Platform: MS Windows
File Type: vbs
Infection Length: N/A
Reported Cost: $8.5 Billion

Iloveyou virus

8.) Slammer (also known as Sapphire, Helkern or SQLExp) was a worm that appeared in 2003 January and was the fastest-spreading worm of its time. The worm was an extremely simple piece of code and its payload was an unintended byproduct of its spreading ability.


Name: SQL Slammer
Type: Internet Worm
Creator/Author: Unknown
Date Discovered: 2003.01.25
Place of Origin: N/A
Source of Language: Assembly
Platform: MS Windows
File Type: UDP Packet*
Infection Length: 404 Bytes
Reported Cost: $1.2 Billion

SQl Slammer

9.) The Sobig worm is considered one of the most destructive worms of its time, with an reported total of $37.1 Billion in damage. It has also set records in spreading ability, including the number of emails sent with itself attached. The worm appeared only a little more than two weeks before Slammer.

Name: Sobig
Type: Multi-vector Worm
Creator/Author: Unknown
Date Discovered: 2003.01.09
Place of Origin: N/A
Source of Language: C++
Platform: MS Windows
File Type: exe, pif
Infection Length: N/A
Reported Cost: $37.1 Billion

Sobig

10.) Mydoom is reported to be the most damaging virus or worm ever released, followed closely by Sobig. It also set records for spreading ability.


Name: My Doom
Type: Multiple vector worm
Creator/Author: Unknown
Date Discovered: 2004.01.26
Place of Origin: N/A
Source of Language: C++
Platform: MS Windows
File Type: cmd, exe, pif, scr, zip
Infection Length: N/A
Reported Cost: $38.5 billion

My Doom

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