5.167.70.28📋 Copy

# INTELLIGENCE BRIEFING: 5.167.70.28/32

Classification: Threat Intelligence Report

Risk Level: Moderate Risk

Date: Current Observation

---

## EXECUTIVE SUMMARY

IP address 5.167.70.28 is identified as a known attacker with a risk score of 49/100. The address is registered to ER-Telecom Holding's Cheboksary branch in Russia and operates as a residential endpoint within the 5.167.70.0/24 subnet, which exhibits high abuse density. The IP is listed on at least one threat blocklist and has been observed in 49 signal events.

---

## TECHNICAL PROFILE

Network Ownership:

• ASN: 57026
• Organization: Network Operation Center CJSC ER-Telecom Holding Cheboksary branch
• RIR: RIPE
• CIDR Block: 5.167.68.0/22
• Origin ASN: 57026

Geolocation:

• Country: Russia (RU)
• Region: Chuvash Republic
• City: Cheboksary
• Network Type: Residential
• PTR Hostname: 5x167x70x28.dynamic.cheb.ertelecom.ru

Risk Indicators:

• Overall Risk Score: 49 (Moderate Risk)
• Known Attacker: YES
• Blacklist Count: 1
• DNSBL Listings: 2 of 8 total lists
• Threat Feeds: blocklist.de
• Abuse Confidence Score: Available via RDAP

---

## NETWORK CONTEXT & NEIGHBORHOOD ANALYSIS

The target IP resides in subnet 5.167.70.0/24, which shows significant abuse characteristics:

• Subnet Classification: High Abuse
• Abuse Density: 1.0
• Inherited Risk Score: 40
• Total Siblings in /24: 256
• Active Siblings: 147
• Threat Siblings: 256

Neighborhood analysis of 100 sampled neighbors reveals:

• Risk Distribution: 100 medium risk, 0 high risk, 0 low risk
• Consistent risk scores ranging from 40-49 across the subnet
• Network infrastructure type: ERTH-CHEB-PPPOE-22-NET

The 334 identified relationships indicate extensive network interconnections, primarily within the same residential ISP network.

---

## OBSERVATION HISTORY

Forty-nine signal observations have been recorded. Recent observations include:

• Multiple threat indicator listings with high severity classifications
• Operator score assessments showing "Minimal" threat level in some observations
• Signal confidence levels ranging from 0.22 to 0.85
• Observations spanned from 2026-06-24, indicating active monitoring

The historical data shows persistent threat presence with 1 threat observation count and no evidence of persistent malicious activity patterns.

---

## SECURITY RECOMMENDATIONS

Primary Action: Block or rate-limit this IP at the network edge

Severity: High

Reason: Suspicious activity indicators present

Recommended Firewall Rules:

*iptables:*

```

iptables -A INPUT -s 5.167.70.28 -j DROP

```

*nftables:*

```

nft add rule inet filter input ip saddr 5.167.70.28 drop

```

*nginx:*

```

deny 5.167.70.28;

```

*pfSense:*

```

5.167.70.28/32

```

*Cloudflare WAF:*

```json

{

"description": "Block 5.167.70.28 — IPDebrief risk score 49",

"action": "block",

"filter": {

"expression": "ip.src eq 5.167.70.28"

}

}

```

*AWS WAF:*

```json

{

"Addresses": ["5.167.70.28/32"],

"Description": "IPDebrief risk 49"

}

```

---

## ANALYST NOTES

This IP should be treated as potentially malicious given the known attacker designation and blacklist presence. The residential network context combined with high subnet abuse density suggests this may be part of a coordinated network infrastructure. Consider blocking the entire /24 subnet if the threat persists across multiple addresses, though this should be evaluated against operational requirements.

Threat Persistence: False

Cert Matches: 0

Correlated IPs: 0

---

*Report generated by IPDebrief Intelligence Platform*

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