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52 lines
1.9 KiB
YAML
52 lines
1.9 KiB
YAML
name: Github Commit Changes In Master
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id: c9d2bfe2-019f-11ec-a8eb-acde48001122
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version: 1
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date: '2021-08-20'
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author: Teoderick Contreras, Splunk
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type: Anomaly
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datamodel: []
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description: This search is to detect a pushed or commit to master or main branch.
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This is to avoid unwanted modification to master without a review to the changes.
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Ideally in terms of devsecops the changes made in a branch and do a PR for review.
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of course in some cases admin of the project may did a changes directly to master
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branch
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search: '`github` branches{}.name = main OR branches{}.name = master | stats count
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min(_time) as firstTime max(_time) as lastTime by commit.author.html_url commit.commit.author.email
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commit.author.login commit.commit.message repository.pushed_at commit.commit.committer.date
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| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `github_commit_changes_in_master_filter`'
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs related to github logs having the fork, commit, push metadata that can be use
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to monitor the changes in a github project.
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known_false_positives: admin can do changes directly to master branch
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references:
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- https://www.redhat.com/en/topics/devops/what-is-devsecops
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tags:
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analytic_story:
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- DevSecOps
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automated_detection_testing: passed
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confidence: 30
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context:
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- Source:Endpoint
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- Stage:Reconnaissance
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1199/github_push_master/github_push_master.log
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impact: 30
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kill_chain_phases:
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- Exploitation
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message: suspicious commit by $commit.commit.author.email$ to main branch
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mitre_attack_id:
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- T1199
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observable:
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- name: commit.commit.author.email
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type: User
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role:
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- attacker
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- _time
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risk_score: 9
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security_domain: endpoint
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