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Removed required_fields from, well,

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pyth0n1c
2024-11-15 10:40:10 -08:00
parent c5ac6bafc8
commit 410548dabf
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detections/cloud/github_commit_changes_in_master.yml
+23 -7
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@@ -5,11 +5,23 @@ date: '2024-09-30'
author: Teoderick Contreras, Splunk
status: production
type: Anomaly
description: The following analytic detects direct commits or pushes to the master or main branch in a GitHub repository. It leverages GitHub logs to identify events where changes are made directly to these critical branches. This activity is significant because direct modifications to the master or main branch bypass the standard review process, potentially introducing unreviewed and harmful changes. If confirmed malicious, this could lead to unauthorized code execution, security vulnerabilities, or compromised project integrity.
description: The following analytic detects direct commits or pushes to the master
or main branch in a GitHub repository. It leverages GitHub logs to identify events
where changes are made directly to these critical branches. This activity is significant
because direct modifications to the master or main branch bypass the standard review
process, potentially introducing unreviewed and harmful changes. If confirmed malicious,
this could lead to unauthorized code execution, security vulnerabilities, or compromised
project integrity.
data_source:
- GitHub
search: '`github` branches{}.name = main OR branches{}.name = master | stats count min(_time) as firstTime max(_time) as lastTime by commit.commit.author.email commit.author.login commit.commit.message repository.pushed_at commit.commit.committer.date repository.full_name | rename commit.author.login as user, repository.full_name as repository | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `github_commit_changes_in_master_filter`'
how_to_implement: To successfully implement this search, you need to be ingesting logs related to github logs having the fork, commit, push metadata that can be use to monitor the changes in a github project.
search: '`github` branches{}.name = main OR branches{}.name = master | stats count
min(_time) as firstTime max(_time) as lastTime by commit.commit.author.email commit.author.login
commit.commit.message repository.pushed_at commit.commit.committer.date repository.full_name
| rename commit.author.login as user, repository.full_name as repository | `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)` | `github_commit_changes_in_master_filter`'
how_to_implement: To successfully implement this search, you need to be ingesting
logs related to github logs having the fork, commit, push metadata that can be use
to monitor the changes in a github project.
known_false_positives: Admin can do changes directly to master branch
references:
- https://www.redhat.com/en/topics/devops/what-is-devsecops
@@ -19,7 +31,12 @@ drilldown_searches:
earliest_offset: $info_min_time$
latest_offset: $info_max_time$
- name: View risk events for the last 7 days for - "$commit.commit.author.email$"
search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$commit.commit.author.email$") starthoursago=168 | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`'
search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$commit.commit.author.email$")
starthoursago=168 | stats count min(_time) as firstTime max(_time) as lastTime
values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories)
as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic)
as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`'
earliest_offset: $info_min_time$
latest_offset: $info_max_time$
tags:
@@ -40,12 +57,11 @@ tags:
- Splunk Enterprise
- Splunk Enterprise Security
- Splunk Cloud
required_fields:
- _time
security_domain: endpoint
tests:
- name: True Positive Test
attack_data:
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1199/github_push_master/github_push_master.log
- data:
https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1199/github_push_master/github_push_master.log
source: github
sourcetype: aws:firehose:json