Szribi

Aliases: Srizbi

First seen
2007-03-01 00:00:00
Malware type
botnet
Family
Malware family
Profile updated
2026-07-07 14:50:40

Targeted industries: financial-services government-and-public-sector

Context

Srizbi, also known as Szribi, is a botnet malware family known for sending large volumes of spam emails. It was one of the largest spambots in operation, capable of sending millions of spam messages per day and was often used to propagate other malware.

Reports & references

  • web.archive.org — Blackhat Eu 2010 Carrera Silberman State Of Malware Slides (report)
  • malpedia.caad.fkie.fraunhofer.de — Win.Szribi (report)
  • secureworks.com — Srizbi (report)
  • virusbulletin.com — Spam Kernel (report)
  • Mandiant — Technical Details Of Srizbis Domain Generation Algorithm (report)

External references