Pivot on IOC Skill
Explore relationships connected to an IOC within Google Threat Intelligence (GTI) to discover related entities for investigation expansion.
Inputs
IOC_VALUE - The indicator value to pivot fromIOC_TYPE - The type: "IP Address", "Domain", "File Hash", "URL", or "Collection"RELATIONSHIP_NAMES - List of relationships to query (see table below)
Available Relationships by IOC Type
| IOC Type |
Common Relationships |
| IP Address |
communicating_files, downloaded_files, referrer_files, resolutions |
| Domain |
resolutions, communicating_files, downloaded_files, subdomains, siblings |
| File Hash |
contacted_domains, contacted_ips, contacted_urls, dropped_files, embedded_domains |
| URL |
communicating_files, downloaded_files, last_serving_ip_address |
| Collection |
malware_families, attack_techniques, threat_actors, indicators |
Workflow
Step 1: Select GTI Tool
Based on IOC_TYPE:
| IOC Type |
Tool |
| IP Address |
gti-mcp.get_entities_related_to_an_ip_address |
| Domain |
gti-mcp.get_entities_related_to_a_domain |
| File Hash |
gti-mcp.get_entities_related_to_a_file |
| URL |
gti-mcp.get_entities_related_to_an_url |
| Collection |
gti-mcp.get_entities_related_to_a_collection |
Step 2: Query Each Relationship
For each relationship in RELATIONSHIP_NAMES:
[selected_tool](
identifier=IOC_VALUE,
relationship_name=relationship
)
Store results keyed by relationship name.
Required Outputs
After completing this skill, you MUST report these outputs:
| Output |
Description |
RELATED_ENTITIES |
Dictionary of entities found per relationship |
EXPANDED_IOCS |
Flattened list of all discovered IOCs (IPs, domains, hashes) |
THREAT_CONTEXT |
Threat actor/campaign context if found during pivoting |
PIVOT_STATUS |
Success/failure status of the pivoting |
Example Usage
File Hash Investigation:
IOC_VALUE: "abcdef123456..."
IOC_TYPE: "File Hash"
RELATIONSHIP_NAMES: ["contacted_domains", "contacted_ips", "dropped_files"]
Domain Investigation:
IOC_VALUE: "suspicious-domain.com"
IOC_TYPE: "Domain"
RELATIONSHIP_NAMES: ["resolutions", "communicating_files", "subdomains"]
1---2name: pivot-on-ioc3description: Explore GTI relationships for an IOC to discover related entities. Use to expand investigation by finding connected domains, IPs, files, or threat actors. Takes an IOC and relationship types to query.4---56# Pivot on IOC Skill78Explore relationships connected to an IOC within Google Threat Intelligence (GTI) to discover related entities for investigation expansion.910## Inputs1112- `IOC_VALUE` - The indicator value to pivot from13- `IOC_TYPE` - The type: "IP Address", "Domain", "File Hash", "URL", or "Collection"14- `RELATIONSHIP_NAMES` - List of relationships to query (see table below)1516## Available Relationships by IOC Type1718| IOC Type | Common Relationships |19|----------|---------------------|20| IP Address | `communicating_files`, `downloaded_files`, `referrer_files`, `resolutions` |21| Domain | `resolutions`, `communicating_files`, `downloaded_files`, `subdomains`, `siblings` |22| File Hash | `contacted_domains`, `contacted_ips`, `contacted_urls`, `dropped_files`, `embedded_domains` |23| URL | `communicating_files`, `downloaded_files`, `last_serving_ip_address` |24| Collection | `malware_families`, `attack_techniques`, `threat_actors`, `indicators` |2526## Workflow2728### Step 1: Select GTI Tool2930Based on IOC_TYPE:3132| IOC Type | Tool |33|----------|------|34| IP Address | `gti-mcp.get_entities_related_to_an_ip_address` |35| Domain | `gti-mcp.get_entities_related_to_a_domain` |36| File Hash | `gti-mcp.get_entities_related_to_a_file` |37| URL | `gti-mcp.get_entities_related_to_an_url` |38| Collection | `gti-mcp.get_entities_related_to_a_collection` |3940### Step 2: Query Each Relationship4142For each relationship in `RELATIONSHIP_NAMES`:4344```45[selected_tool](46 identifier=IOC_VALUE,47 relationship_name=relationship48)49```5051Store results keyed by relationship name.5253## Required Outputs5455**After completing this skill, you MUST report these outputs:**5657| Output | Description |58|--------|-------------|59| `RELATED_ENTITIES` | Dictionary of entities found per relationship |60| `EXPANDED_IOCS` | Flattened list of all discovered IOCs (IPs, domains, hashes) |61| `THREAT_CONTEXT` | Threat actor/campaign context if found during pivoting |62| `PIVOT_STATUS` | Success/failure status of the pivoting |6364## Example Usage6566**File Hash Investigation:**67```68IOC_VALUE: "abcdef123456..."69IOC_TYPE: "File Hash"70RELATIONSHIP_NAMES: ["contacted_domains", "contacted_ips", "dropped_files"]71```7273**Domain Investigation:**74```75IOC_VALUE: "suspicious-domain.com"76IOC_TYPE: "Domain"77RELATIONSHIP_NAMES: ["resolutions", "communicating_files", "subdomains"]78```
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