77.48.28.239📋 Copy

IPDebrief Threat Intelligence Briefing

Target IP: 77.48.28.239/32

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**1. Core Profile**

• Risk Score: 70/100 (High Risk)
• Threat Indicators:

- Tor exit node activity detected

- No known attacker or spam source associations

• Ownership:

- ASN: 16019 (OSKR-MNT)

- Organization: Vodafone Libertel B.V. (NL)

- Geolocation: Třebenice, Czech Republic (49.82°N, 15.47°E)

• Network Role:

- Classified as a Tor exit node (mobile carrier)

- Open ports: 80 (HTTP), 443 (HTTPS)

- TLS certificate: Issued to `www.yrhotthj2i74ozpwzbr.com`

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**2. Observation History**

• Recent Activity (Last 30 Days):

- Single observation of Tor exit node traffic (2026-06-11)

- TLS scan detected valid certificate with TLS 1.3 and AES-256-GCM encryption

- No persistent malicious activity or campaign correlations

• Geolocation Validity:

- ICMP validation failed ("connection failed")

- Estimated distance from probe: 555 km (potential latency discrepancy)

---

**3. Network Relationships**

• Linked Entities:

- Subnet: 77.48.28.0/24

- Associated networks: "CZ-FINALTEK" (likely misparsed or internal label)

- Neighboring IPs:

- 77.48.28.193 (Risk: 40/100)

- 77.48.28.204 (Risk: 66/100)

- 77.48.28.237 (Risk: 66/100)

• Subnet Abuse Density: 75% (mostly_clean classification)

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**4. Security Recommendations**

• Immediate Actions:

- Block the IP:

```bash

iptables -A INPUT -s 77.48.28.239 -j DROP

nft add rule inet filter input ip saddr 77.48.28.239 drop

```

- Monitor Traffic:

- Increase logging verbosity for connections from this IP

- Review TLS certificate validity and SANs for anomalies

• Long-Term Mitigation:

- Investigate neighboring IPs (e.g., 77.48.28.204) due to elevated risk scores

- Consider rate-limiting or CAPTCHA for HTTP/HTTPS traffic

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**5. Analyst Notes**

• The IP is part of a Tor exit node network, which may be used for anonymized malicious activities.
• While the subnet has a high abuse density, the IP itself shows no direct malicious indicators beyond Tor association.
• Geolocation validation is compromised due to ICMP blocking; cross-reference with other sources for accuracy.
• TLS certificate details (e.g., issuer, SANs) should be validated for potential misconfiguration or spoofing.

End of Briefing

*Generated via IPDebrief intelligence suite. Use with operational judgment.*

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