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MyDoom Worm

First observed in 2004, MyDoom is a polymorphic internet worm targeting users worldwide.

Threat ID:
CC-3084
Category:
Worm
Threat Severity:
Low
Threat Vector:
Published:
1 August 2019 12:00 AM
Report a cyber attack: call 0300 303 5222 or email [email protected]

Summary

First observed in 2004, MyDoom is a polymorphic internet worm targeting users worldwide.

Affected platforms

The following platforms are known to be affected:

Microsoft Windows

Microsoft Windows - All versions

Threat details

MyDoom is distributed as an EXE file attachment in spam emails sent over SMTP. When executed, MyDoom will attempt to enrol the affected device into a botnet controlled over TCP port 1042. The device is then used to send further spam emails containing MyDoom to randomised email addresses.

Remediation steps

Type Step

To prevent and detect an infection, ensure that:

  • A robust program of education and awareness training is delivered to users to ensure they don’t open attachments or follow links within unsolicited emails.
  • All operating systems, anti-virus and other security products are kept up-to-date.
  • Regular anti-virus and security scans are performed on your organisation’s estate.
  • All day-to-day computer activities such as email and internet are performed using non-administrative accounts.
  • Strong password policies are in place.
  • Network, proxy and firewall logs should be monitored for suspicious activity.
  • User accounts accessed from affected devices should be reset on a clean computer.
  • Your organisation adopts a holistic all-round approach to Cyber Security as advocated by the 10 Steps to Cyber Security.

Last edited: 14 February 2020 2:46 pm