IP Threat Report
37.139.53.166
ABUSE.MOM — BEHAVE OR GET EXPOSED
Geolocation & Classification
Detection Signatures
| Signature | Description | Points | Severity |
|---|---|---|---|
| 404 ratio 40-60% | Majority of requests returned 404 — enumeration | +15 | |
| Burst 6/2s | Abnormally fast request rate — automated scanning | +35 | |
| Danger medium hits: 10 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 101 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 103 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 105 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 107 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 118 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 12 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 120 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 14 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 15 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 16 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 18 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 2 | Medium-risk: admin panels, config files | +20 | |
| Danger medium hits: 20 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 22 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 24 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 25 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 26 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 28 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 30 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 32 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 34 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 35 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 36 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 37 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 38 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 39 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 4 | Medium-risk: admin panels, config files | +40 | |
| Danger medium hits: 40 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 41 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 42 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 43 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 44 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 45 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 46 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 47 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 48 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 50 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 51 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 52 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 53 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 54 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 55 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 56 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 57 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 58 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 6 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 60 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 62 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 64 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 65 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 67 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 68 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 69 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 70 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 71 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 73 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 74 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 75 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 76 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 77 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 78 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 79 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 8 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 80 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 81 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 82 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 83 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 84 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 85 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 86 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 87 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 89 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 91 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 95 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 99 | Medium-risk: admin panels, config files | +60 | |
| Foreign referer | Referer from unrelated external domain | +10 | |
| Probe 302→404 | Behavioral anomaly detected by automated analysis | +20 | |
| UA changed | Multiple User-Agents — bot rotation technique | +25 |
Observed Activity
Reconstructed HTTP requests from server access logs. Target domains redacted for security.
* Typical request patterns for detected signatures. Actual target domains are redacted.
Timeline
Network Provider
Recommendations
Actions taken & recommended
- IP 37.139.53.166 is blocked at application level (HTTP 403)
- Consider blocking at firewall level (iptables/CSF) to reduce server load
- Other malicious IPs detected in the same /24 subnet — consider blocking 37.139.53.0/24
- Report abuse to the network provider via their abuse contact
- Ensure sensitive files (.env, .git, backups) are not accessible from the web
🔎 Path Enumeration Protection
Block scanning from 37.139.53.166: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.
🌊 Flood / DDoS Mitigation
Implement limit_req_zone in nginx. Deploy CDN with DDoS protection. Configure SYN cookies and connection tracking to throttle 37.139.53.166.
🤖 Bot Detection
Address UA spoofing from 37.139.53.166: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.
Neighbors in 37.139.53.0/24
Other blocked IPs from the same /24 subnet — indicates systematic abuse from this network range.
Blacklist Status (DNSBL)
This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.
Checked: Spamhaus, SpamCop, Barracuda, SORBS, CBL, UCEProtect. Results may change over time.
Threat Analysis
37.139.53.166 has been assigned a threat score of 165/100 (Critical). This represents a critical risk level. Our detection systems have flagged multiple high-confidence indicators of malicious intent from this address.
The following attack categories were identified:
📊 Threat Analysis
37.139.53.166 is registered in St Petersburg, Russia, operating on the network of Petersburg Internet Network ltd.. This IP first appeared in our threat feeds after triggering multiple behavioral detection signatures. The address has been active for 33 days in our monitoring system, producing 1,177 flagged requests at a rate of ~35.7/day. Classified as a VPN or proxy server, this IP serves as an anonymization layer. While VPNs have legitimate uses, this address has been observed routing clearly malicious traffic. The diversity of 3 separate attack methods suggests a comprehensive attack toolkit — likely an automated scanner that tests for vulnerabilities across multiple categories. Russia currently accounts for 109 blocked IPs in our database, making it a significant source of malicious traffic. With a threat score of 165/100, this IP is among the most dangerous addresses in our database. Immediate and complete blocking is strongly recommended.
This IP is associated with a VPN or proxy service. Attackers frequently route their traffic through anonymizing services to obscure their true location. This makes attribution more challenging but the malicious behavior patterns remain detectable.
Related Threats
Security Intelligence
💡 DDoS Mitigation Approaches
Distributed denial of service attacks overwhelm infrastructure with traffic volume. Effective mitigation combines always-on traffic scrubbing, anycast network distribution, rate limiting, and the ability to quickly scale absorption capacity during attacks.
💡 Machine Learning in Threat Detection
Machine learning models analyze vast amounts of network traffic to identify attack patterns invisible to rule-based systems. Supervised models classify known attack types while unsupervised models detect anomalies that may indicate novel threats.