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mukul975
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Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
70 lines
2.5 KiB
Markdown
70 lines
2.5 KiB
Markdown
# Compromised Cloud Credentials Detection API Reference
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## GuardDuty Credential Findings
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| Finding Type | Description |
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|-------------|-------------|
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| `UnauthorizedAccess:IAMUser/InstanceCredentialExfiltration.OutsideAWS` | EC2 instance creds used outside AWS |
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| `UnauthorizedAccess:IAMUser/ConsoleLoginSuccess.B` | Console login from unusual location |
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| `UnauthorizedAccess:IAMUser/MaliciousIPCaller` | API calls from known malicious IP |
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| `Discovery:IAMUser/AnomalousBehavior` | Unusual reconnaissance API patterns |
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| `Persistence:IAMUser/AnomalousBehavior` | Unusual persistence API calls |
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| `InitialAccess:IAMUser/AnomalousBehavior` | Unusual initial access patterns |
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## CloudTrail - Credential Abuse Investigation
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```bash
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# Lookup events by access key
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aws cloudtrail lookup-events \
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--lookup-attributes AttributeKey=AccessKeyId,AttributeValue=AKIAXXXXXXXXXXXXXXXX \
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--start-time 2024-01-01T00:00:00Z --end-time 2024-01-02T00:00:00Z
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# Lookup by username
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aws cloudtrail lookup-events \
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--lookup-attributes AttributeKey=Username,AttributeValue=compromised-user
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# Athena query for deep investigation
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SELECT eventtime, eventsource, eventname, sourceipaddress,
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useridentity.arn, errorcode
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FROM cloudtrail_logs
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WHERE useridentity.accesskeyid = 'AKIAXXXXXXXXXXXXXXXX'
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AND eventtime > '2024-01-01'
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ORDER BY eventtime DESC
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```
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## IAM Credential Remediation
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```bash
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# Deactivate access key
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aws iam update-access-key --access-key-id AKIAXXXX --user-name user --status Inactive
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# Delete access key
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aws iam delete-access-key --access-key-id AKIAXXXX --user-name user
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# Revoke all sessions (inline deny policy with token age condition)
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aws iam put-user-policy --user-name user --policy-name RevokeOldSessions \
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--policy-document '{"Version":"2012-10-17","Statement":[{"Effect":"Deny","Action":"*","Resource":"*","Condition":{"DateLessThan":{"aws:TokenIssueTime":"2024-01-15T00:00:00Z"}}}]}'
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# List all access keys for user
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aws iam list-access-keys --user-name user
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```
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## Reconnaissance API Calls to Monitor
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```
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GetCallerIdentity, ListBuckets, DescribeInstances,
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ListUsers, ListRoles, ListAccessKeys, DescribeRegions,
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GetAccountAuthorizationDetails, ListFunctions,
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DescribeDBInstances, ListSecrets
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```
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## Azure - Compromised Credential Detection
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```bash
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# Query risky sign-ins
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az rest --method GET --url "https://graph.microsoft.com/v1.0/identityProtection/riskyUsers"
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# Revoke user sessions
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az rest --method POST --url "https://graph.microsoft.com/v1.0/users/{id}/revokeSignInSessions"
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```
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