Exclude LogonSessions Running Sigma Alert

Description

Exclude LogonSessions Running Sigma Alert

Query · wazuh

View raw source upstream ↗ Wazuh XML 
field win.eventdata.parentCommandLine="(?i)^\\"C:\\\\Windows\\\\system32\\\\cmd\.exe\\" \/c \\"C:\\\\Windows\\\\TEMP\\\\chainsaw_batch\.bat && set CHAINSAW_KILLED\\"$"

No license declared

socfortress/Wazuh-Rules publishes no license, and without an express grant the default is all rights reserved. The query above is synthesized from the rule rather than copied out of it, so you can see what the rule matches on; the rule as written stays upstream.

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. 92031 Discovery activity executed anchor level 3
    field win.eventdata.originalFileName="(?i)(net\.EXE|net1\.EXE)"
  2. 92032 Suspicious Windows cmd shell execution anchor level 3
    field win.eventdata.parentImage="(?i)cmd\.EXE" AND field win.eventdata.parentCommandLine="(?i)\s\/C\s"
  3. 900064 Exclude LogonSessions Running Sigma Alert exclusion level 1 this rule
    field win.eventdata.parentCommandLine="(?i)^\\"C:\\\\Windows\\\\system32\\\\cmd\.exe\\" \/c \\"C:\\\\Windows\\\\TEMP\\\\chainsaw_batch\.bat && set CHAINSAW_KILLED\\"$"

Rule dependencies

Depends on

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