analyzing-campaign-attribution-evidence

name	analyzing-campaign-attribution-evidence
description	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 attr
domain	cybersecurity
subdomain	threat-intelligence
tags	["threat-intelligence","cti","ioc","mitre-attack","stix","attribution","campaign-analysis"]
version	1.0
author	mahipal
license	Apache-2.0
nist_csf	["ID.RA-01","ID.RA-05","DE.CM-01","DE.AE-02"]
mitre_attack	["T1587.001","T1583.001","T1588.002","T1071.001"]
source	https://github.com/mukul975/Anthropic-Cybersecurity-Skills
source_commit	04450304b12645cb2b974ab96d28c0664758a88d

Analyzing Campaign Attribution Evidence

Overview

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

1. Infrastructure Overlap: Shared C2 servers, domains, IP ranges, hosting providers
2. TTP Consistency: Matching ATT&CK techniques and sub-techniques across campaigns
3. Malware Code Similarity: Shared code bases, compilers, PDB paths, encryption routines
4. Operational Patterns: Timing (working hours, time zones), targeting patterns, operational tempo
5. Language Artifacts: Embedded strings, variable names, error messages in specific languages
6. 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.