# Alerts to Answers · Lab 07 · IOC Enrichment Dataset · v20 # © 2026 Jim Furstenberg - Ph.D., P.I. · Kalos Cybersecurity LLC # # SAFETY: Enrich these indicators through reputable intelligence services. # Do not browse to an indicator, scan it, connect to it, or download content. # Historical association is evidence to investigate - not automatic authority to block. # # Expected workflow: # 1. Identify the indicator type. # 2. Enrich it using at least two appropriate sources when possible. # 3. Record the observation date, result, confidence, and source. # 4. Distinguish malicious association from current ownership or current activity. # 5. Add only instructor-approved, high-confidence IP indicators to the lab CDB list. # --- HISTORICAL THREAT-ASSOCIATED IPv4 INDICATORS --------------------------- # Source: CISA/FBI/NSA et al., AA24-249A, Appendix B. # These addresses were historically linked to Unit 29155 infrastructure. # CISA directs defenders to investigate associated activity; do not treat the # address alone as proof that present-day traffic or ownership is malicious. 5.226.139.66 45.141.87.11 # --- BENIGN IPv4 CONTEXT TRAPS ---------------------------------------------- # These well-known public resolver addresses test whether the analyst verifies # ownership and context instead of equating any listed address with an IOC. 1.1.1.1 8.8.8.8 # --- DOMAIN CONTEXT TRAPS ---------------------------------------------------- # Look up reputation and ownership only. Do not visit the domains for this lab. example.com eicar.org # --- SHA-256 DETECTION ANCHOR ------------------------------------------------ # Standard EICAR anti-malware test-file SHA-256. EICAR is not malware, although # security products intentionally identify it as a detection-validation file. 275a021bbfb6489e54d471899f7db9d1663fc695ec2fe2a2c4538aabf651fd0f # Primary references: # https://www.cisa.gov/sites/default/files/2024-09/aa24-249a-russian-military-cyber-actors-target-us-and-global-critical-infrastructure.pdf # https://www.eicar.org/download-anti-malware-testfile/