[Rule Tuning] Several rule tunings (#3024)

* [Rule Tuning] Several rule tunings

* Added 1 more

* optimized ransomware encryption rules

* Update rules/linux/impact_potential_linux_ransomware_file_encryption.toml

* Update rules/linux/impact_potential_linux_ransomware_note_detected.toml

* Added 2 more tunings based on todays telemetry

* Some tunings

* Tuning

* Tuning

* fixed user.id comparison

* Something went wrong with deprecation

* Something went wrong with deprecation

* Update rules/linux/impact_potential_linux_ransomware_file_encryption.toml

* Update rules/linux/discovery_linux_nping_activity.toml

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>

* Update rules/linux/discovery_linux_hping_activity.toml

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>

* Dedeprecated the rule to deprecate later

---------

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>

(cherry picked from commit a1716bd673)
This commit is contained in:
Ruben Groenewoud
2023-08-25 14:03:29 +02:00
committed by github-actions[bot]
parent 939800bb03
commit ed2daecb25
31 changed files with 186 additions and 179 deletions
@@ -4,7 +4,7 @@ integration = ["endpoint"]
maturity = "production"
min_stack_comments = "Multiple field support in the New Terms rule type was added in Elastic 8.6"
min_stack_version = "8.6.0"
updated_date = "2023/07/31"
updated_date = "2023/08/21"
[transform]
[[transform.osquery]]
@@ -111,7 +111,7 @@ type = "new_terms"
query = '''
host.os.type : "linux" and event.category : "file" and
event.type : ("change" or "file_modify_event" or "creation" or "file_create_event") and
file.path : "/etc/rc.local" and not process.name : ("dockerd" or "yum" or "rpm" or "dpkg") and not file.extension : ("swp" or "swx")
file.path : "/etc/rc.local" and not process.name : ("dockerd" or "docker" or "dnf" or "yum" or "rpm" or "dpkg") and not file.extension : ("swp" or "swx")
'''
[[rule.threat]]