GitHub Security Change, includes GitHub Advanced Security

Severity: low
Group by: action, actor
Log types: GitHub.Audit
Tags: GitHub
Reference: https://docs.github.com/en/code-security/getting-started/auditing-security-alerts
Source: github.com/panther-labs/panther-analysis

The rule alerts when GitHub Security tools (Dependabot, Secret Scanner, etc) are disabled.

MITRE ATT&CK coverage

Tactic	Techniques
Stealth	`T1562` Impair Defenses

Rules detecting the same action

Other rules on this platform that filter on the same API call or operation.

GitHub Dependabot Vulnerability Alerts Disabled (YARA-L)
GitHub Enterprise Disable 2FA Requirement (Splunk)
GitHub Enterprise Disable Dependabot (Splunk)
Github High Risk Configuration Disabled (Sigma)
Github Push Protection Disabled (Sigma)
GitHub Secret Scanning Disabled Or Bypassed (YARA-L)
Github Secret Scanning Feature Disabled (Sigma)
GitHub SSO Configuration Modified (YARA-L)

Rule body yaml

AnalysisType: rule
Filename: github_advanced_security_change.py
RuleID: "GitHub.Advanced.Security.Change"
DisplayName: "GitHub Security Change, includes GitHub Advanced Security"
Enabled: true
CreateAlert: false
LogTypes:
  - GitHub.Audit
Tags:
  - GitHub
Reports:
  MITRE ATT&CK:
    - TA0005:T1562
Severity: Low
Description: The rule alerts when GitHub Security tools (Dependabot, Secret Scanner, etc) are disabled.
Runbook: Confirm with GitHub administrators and re-enable the tools as applicable.
Reference: https://docs.github.com/en/code-security/getting-started/auditing-security-alerts
Tests:
  - Name: Secret Scanning Disabled on a Repo
    ExpectedResult: True
    Log:
      {
        "action": "repository_secret_scanning_push_protection.disable",
        "actor": "bobert",
        "actor_location": { "country_code": "US" },
        "at_sign_timestamp": "2022-08-16 16:56:49.309",
        "created_at": "2022-08-16 16:56:49.309",
        "org": "an-org",
        "repo": "an-org/a-repo",
        "user": "bobert",
      }
  - Name: Secret Scanning Disabled Org Wide
    ExpectedResult: True
    Log:
      {
        "action": "secret_scanning.disable",
        "actor": "bobert",
        "actor_location": { "country_code": "US" },
        "at_sign_timestamp": "2022-08-16 16:56:49.309",
        "created_at": "2022-08-16 16:56:49.309",
        "org": "an-org",
        "repo": "an-org/a-repo",
        "user": "bobert",
      }
  - Name: Secret Scanning Disabled for New Repos
    ExpectedResult: True
    Log:
      {
        "action": "secret_scanning_new_repos.disable",
        "actor": "bobert",
        "actor_location": { "country_code": "US" },
        "at_sign_timestamp": "2022-08-16 16:56:49.309",
        "created_at": "2022-08-16 16:56:49.309",
        "org": "an-org",
        "repo": "an-org/a-repo",
        "user": "bobert",
      }
  - Name: Dependabot Alerts Disabled Org Wide
    ExpectedResult: True
    Log:
      {
        "action": "dependabot_alerts.disable",
        "actor": "bobert",
        "actor_location": { "country_code": "US" },
        "at_sign_timestamp": "2022-08-16 16:56:49.309",
        "created_at": "2022-08-16 16:56:49.309",
        "org": "an-org",
        "repo": "an-org/a-repo",
        "user": "bobert",
      }
  - Name: Dependabot Alerts Disabled on New Repos
    ExpectedResult: True
    Log:
      {
        "action": "dependabot_alerts_new_repos.disable",
        "actor": "bobert",
        "actor_location": { "country_code": "US" },
        "at_sign_timestamp": "2022-08-16 16:56:49.309",
        "created_at": "2022-08-16 16:56:49.309",
        "org": "an-org",
        "repo": "an-org/a-repo",
        "user": "bobert",
      }
  - Name: Dependabot Disabled Org Wide
    ExpectedResult: True
    Log:
      {
        "action": "dependabot_security_updates.disable",
        "actor": "bobert",
        "actor_location": { "country_code": "US" },
        "at_sign_timestamp": "2022-08-16 16:56:49.309",
        "created_at": "2022-08-16 16:56:49.309",
        "org": "an-org",
        "repo": "an-org/a-repo",
        "user": "bobert",
      }
  - Name: Dependabot Disabled on New Repos
    ExpectedResult: True
    Log:
      {
        "action": "dependabot_security_updates_new_repos.disable",
        "actor": "bobert",
        "actor_location": { "country_code": "US" },
        "at_sign_timestamp": "2022-08-16 16:56:49.309",
        "created_at": "2022-08-16 16:56:49.309",
        "org": "an-org",
        "repo": "an-org/a-repo",
        "user": "bobert",
      }
  - Name: Non-GitHub Adv Sec Action
    ExpectedResult: False
    Log:
      {
        "action": "enterprise.config.disable_anonymous_git_access",
        "actor": "bobert",
        "actor_location": { "country_code": "US" },
        "at_sign_timestamp": "2022-08-16 16:56:49.309",
        "created_at": "2022-08-16 16:56:49.309",
        "org": "an-org",
        "repo": "an-org/a-repo",
        "user": "bobert",
      }
  - Name: Enterprise Log - business_advanced_security.enabled
    ExpectedResult: False
    Log:
      {
        "@timestamp": 1671111111111,
        "_document_id": "gAcccccccccccccccccccc",
        "action": "business_advanced_security.enabled",
        "actor": "bobert",
        "actor_ip": "12.12.12.12",
        "actor_location": { "country_code": "US" },
        "business": "example-enterprise",
        "created_at": 1671111111111,
        "operation_type": "modify",
        "user": "bobert",
      }
  - Name: Enterprise Log - business_advanced_security.disabled
    ExpectedResult: True
    Log:
      {
        "@timestamp": 1671111111111,
        "_document_id": "gAcccccccccccccccccccc",
        "action": "business_advanced_security.disabled",
        "actor": "bobert",
        "actor_ip": "12.12.12.12",
        "actor_location": { "country_code": "US" },
        "business": "example-enterprise",
        "created_at": 1671111111111,
        "operation_type": "modify",
        "user": "bobert",
      }

Detection logic

Condition

action in ["dependabot_alerts.disable", "dependabot_alerts_new_repos.disable", "dependabot_security_updates.disable", "dependabot_security_updates_new_repos.disable", "repository_secret_scanning_push_protection.disable", "secret_scanning.disable", "secret_scanning_new_repos.disable", "bypass", "business.disable_oidc", "business.disable_saml", "business.disable_two_factor_requirement", "business.members_can_update_protected_branches.disable", "business.referrer_override_disable", "business_advanced_security.disabled", "business_advanced_security.disabled_for_new_repos", "business_secret_scanning.disable", "business_secret_scanning.disabled_for_new_repos", "business_secret_scanning_custom_pattern_push_protection.disabled", "business_secret_scanning_push_protection.disable", "business_secret_scanning_push_protection.disabled_for_new_repos", "business_secret_scanning_push_protection_custom_message.disable", "org.advanced_security_disabled_for_new_repos", "org.advanced_security_disabled_on_all_repos", "org.advanced_security_policy_selected_member_disabled", "repo.advanced_security_disabled", "repo.advanced_security_policy_selected_member_disabled", "repository_vulnerability_alerts.disable"]

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`action`	in	`business.disable_oidc` `business.disable_saml` `business.disable_two_factor_requirement` `business.members_can_update_protected_branches.disable` `business.referrer_override_disable` `business_advanced_security.disabled` `business_advanced_security.disabled_for_new_repos` `business_secret_scanning.disable` `business_secret_scanning.disabled_for_new_repos` `business_secret_scanning_custom_pattern_push_protection.disabled` `business_secret_scanning_push_protection.disable` `business_secret_scanning_push_protection.disabled_for_new_repos` `business_secret_scanning_push_protection_custom_message.disable` `bypass` `dependabot_alerts.disable` `dependabot_alerts_new_repos.disable` `dependabot_security_updates.disable` `dependabot_security_updates_new_repos.disable` `org.advanced_security_disabled_for_new_repos` `org.advanced_security_disabled_on_all_repos` `org.advanced_security_policy_selected_member_disabled` `repo.advanced_security_disabled` `repo.advanced_security_policy_selected_member_disabled` `repository_secret_scanning_push_protection.disable` `repository_vulnerability_alerts.disable` `secret_scanning.disable` `secret_scanning_new_repos.disable`

Output fields

Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.

Field	Source
`action`
`actor`
`actor_location`	`actor_location.country_code`
`org`
`repo`
`user`

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`risk_score`	Numeric comparison on the Elastic risk score (0 to 100): `risk_score>50`, `risk_score<=20`, `risk_score=99` (alias `risk`; Elastic rules only)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)