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Short bio

Heuristics.Shuriken is Malwarebytes’ detection name for files that are heuristically detected as malware by Malwarebytes’ Shuriken engine. The heuristic detections are done by non-signature based rules. The Shurkine engine was developed by Malwarebytes for signatureless detection of zero-day (0-day) threats.

Types of infection

Based on closer determination, items detected as Malware.Heuristic can be categorized more precisely based on their behavior. Malwarebytes uses the underlying threat categories:

  • Adware
  • Fraudtool
  • Hijack
  • Ransomware
  • Riskware
  • Rogue
  • Rootkit
  • Spyware
  • Trojan
  • Virus
  • Worm


Malwarebytes detects unknown threats as Malware.Heuristic by using sandboxing and other emulation techniques without any specific detection rules to protect users from malware that has not yet been researched and classified. This helps protect our customers against 0-day malware.