5.167.71.80📋 Copy

# IP Intelligence Briefing: 5.167.71.80/32

## Executive Summary

IP address 5.167.71.80 is classified as a Moderate Risk residential endpoint located in Cheboksary, Russia, operated by ER-Telecom Holding. The IP is flagged as a known attacker with one active blacklist listing and exhibits temporal threat activity. Immediate monitoring and potential blocking recommended pending business impact assessment.

## Threat Assessment

Risk Profile:

• Overall Risk Score: 49/100 (Moderate)
• Threat Classification: Known Attacker
• Blacklist Status: 1 active listing (blocklist.de)
• Abuse Confidence: Listed in threat feeds with 50 associated pulses
• Stability: Low (threat persistence days: 0)

Network Classification:

• Network Type: Residential Endpoint (PPPOE)
• Organization: Network Operation Center CJSC ER-Telecom Holding Cheboksary branch
• ASN: 57026
• Geographic Location: Cheboksary, Russia (RU)

## Observational History

Threat activity demonstrates temporal variability over the observation window:

• 2026-06-25 00:11:17 UTC: Active threat indicators detected with 50 pulse signatures
• 2026-06-24: Multiple observations showing minimal threat levels
• Signal count fluctuates between minimal and elevated threat states

This pattern indicates intermittent malicious activity rather than persistent C2 infrastructure.

## Network Relationships

Subnet Context (5.167.71.0/24):

• Classification: High abuse density subnet
• Active Siblings: 151 out of 256 total IPs
• Neighbor Risk Distribution: 71 medium-risk, 29 low-risk, 0 high-risk
• Inherited Risk Score: 40

Network Association:

• Primary network identifier: ERTH-CHEB-PPPOE-22-NET
• 328 relationship records indicate residential ISP allocation pattern
• DNS: 5x167x71x80.dynamic.cheb.ertelecom.ru

## Recommended Actions

Immediate Mitigation:

```

# iptables rule to block (recommended if business policy allows)

iptables -A INPUT -s 5.167.71.80/32 -j DROP

# Or rate-limit for residential endpoint

iptables -A INPUT -s 5.167.71.80/32 -m limit --limit 5/min --limit-burst 10 -j ACCEPT

```

Extended Network Controls:

• Consider subnet-level blocking for 5.167.71.0/24 if threat volume justifies
• Monitor for related IPs in ERTH-CHEB-PPPOE-22-NET network range
• Add to threat intelligence watchlist for correlation with other incidents

Monitoring Recommendations:

• Track for re-appearance after current threat cycle resolves
• Monitor for associated IPs in 5.167.71.0/24 subnet exhibiting similar behavior
• Verify DNS resolution patterns for potential command infrastructure

## Intelligence Context

This IP represents residential infrastructure within a high-abuse subnet. The moderate risk score (49) combined with known attacker flag suggests opportunistic or automated malicious activity rather than sophisticated persistent threat actor infrastructure. Residential PPPOE endpoints in this region are commonly abused for botnet participation, spam amplification, or as compromised endpoints for lateral movement.

---

*Intel generated: 2026-06-25 | Data Sources: IPDebrief Threat Intelligence Platform*

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.