Systematically evaluate cyber-campaign evidence to attribute an operation to a threat actor, using the Diamond Model and Analysis of Competing Hypotheses (ACH) to weigh infrastructure overlaps, TTP consistency, malware code similarity, and timing/language artifacts into confidence-weighted attribution assessments. Use when an incident investigation needs a defensible attribution confidence level.
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Systematically evaluate cyber-campaign evidence to attribute an operation to a threat actor, using the Diamond Model and Analysis of Competing Hypotheses (ACH) to weigh infrastructure overlaps, TTP consistency, malware code similarity, and timing/language artifacts into confidence-weighted attribution assessments. Use when an incident investigation needs a defensible attribution confidence level.
Campaign attribution analysis involves systematically evaluating evidence to determine which threat actor or group is responsible for a cyber operation. This skill covers collecting and weighting attribution indicators using the Diamond Model and ACH (Analysis of Competing Hypotheses), analyzing infrastructure overlaps, TTP consistency, malware code similarities, operational timing patterns, and language artifacts to build confidence-weighted attribution assessments.
When to Use
When investigating security incidents that require analyzing campaign attribution evidence
When building detection rules or threat hunting queries for this domain
When SOC analysts need structured procedures for this analysis type
When validating security monitoring coverage for related attack techniques
Prerequisites
Python 3.9+ with attackcti, stix2, networkx libraries
Access to threat intelligence platforms (MISP, OpenCTI)
Understanding of Diamond Model of Intrusion Analysis
Familiarity with MITRE ATT&CK threat group profiles
Knowledge of malware analysis and infrastructure tracking techniques
Key Concepts
Attribution Evidence Categories
Infrastructure Overlap: Shared C2 servers, domains, IP ranges, hosting providers
TTP Consistency: Matching ATT&CK techniques and sub-techniques across campaigns
Operational Patterns: Timing (working hours, time zones), targeting patterns, operational tempo
Language Artifacts: Embedded strings, variable names, error messages in specific languages
Victimology: Target sector, geography, and organizational profile consistency
Confidence Levels
High Confidence: Multiple independent evidence categories converge on same actor
Moderate Confidence: Several evidence categories match, some ambiguity remains
Low Confidence: Limited evidence, possible false flags or shared tooling
Analysis of Competing Hypotheses (ACH)
Structured analytical method that evaluates evidence against multiple competing hypotheses. Each piece of evidence is scored as consistent, inconsistent, or neutral with respect to each hypothesis. The hypothesis with the least inconsistent evidence is favored.
