Suspicious executable file creation by rundll32 · rule 900091

Description

Suspicious executable file creation by rundll32: $(win.eventdata.targetFilename)

No license declared

socfortress/Wazuh-Rules publishes no license, and without an express grant the default is all rights reserved. The rule as written stays upstream, and this one matches no fields of its own to summarize.

Read the full rule at Exclusion Rules/900000-exclusion_rules.xml ↗. Why this rule is treated this way.

Fires when

Wazuh evaluates a chain top-down. Every rule above this one must match on the same event before this rule is tested at all.

  1. 92211 Suspicious executable file creation by rundll32 · win.eventdata.image = (?i)rundll32.exe, win.eventdata.targetFilename = \.(exe|com|dll|vbs|js|bat|cmd|pif|wsh|ps1|lnk|msi|vbe) anchor level 14
    field win.eventdata.image="(?i)rundll32.exe" AND field win.eventdata.targetFilename="\.(exe|com|dll|vbs|js|bat|cmd|pif|wsh|ps1|lnk|msi|vbe)"
  2. 900091 Suspicious executable file creation by rundll32 · rule 900091 exclusion level 10 this rule
    Matches no fields of its own.

Rule dependencies

Depends on

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