Skip to main content

Rizal

Classification

Category:

Malware

Type:

Trojan

Aliases:

  • Rizal
  • Trojan.Win16.Rizal

Summary

Rizal is a trojan that damages critical system files. The trojan is a Windows NE (16-bit) file 14kb long.

Removal

Technical Details

When run the trojan first adds a big amount of similar command blocks AUTOEXEC.BAT. These commands will clear screen, output the below given messages and wait for key to be pressed.

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- R I Z A L I A N T R O J A N PROGRAMMED BY: THE HAMMER HEAD TEAM Computer Science Dept. Jose Rizal University Shaw BLVD Mandaluyong City Philppines LARRY CONANAN and BENITO TY -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Then the trojan destroys MSDOS.SYS file by zeroing it. This only affects DOS and Windows 9x/ME systems.

After that the trojan starts to copy files from \Windows\Command\ folder to \My Documents\, \Windows\, \Windows\System\, \Windows\System\Iosubsys\ and \Windows\Help\ folders. The copied files have zero length. After restart an affected system could become unusable.

Protect your devices from malware with F‑Secure Total

Protecting your devices from malicious software is essential for maintaining online security. F‑Secure Total makes this easy, helping you to secure your devices in a brilliantly simple way.

  • Award‑winning antivirus and malware protection

  • Online browsing, banking, and shopping protection

  • 24/7 online identity and data breach monitoring

  • Unlimited VPN service to safe­guard your privacy

  • Password manager with private data protection

Choose how many devices you want to protect to get started.

  • Free customer support

  • Cancel anytime

  • The trial does not obligate you to buy the product

After 30 days your subscription will renew automatically for one year at €69.99.

More Support

Community

Ask questions in our Community.

User guides

Check the user guide for instructions.

Contact Support

Chat with with or call an agent.

Submit a Sample

Submit a file or URL for analysis.