IP Threat Report
20.91.203.45
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 103/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 105/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 106/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 108/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 110/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 111/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 114/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 117/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 120/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 122/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 123/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 124/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 125/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 127/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 128/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 130/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 134/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 142/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 149/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 200/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 30/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 31/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 32/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 33/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 34/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 37/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 38/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 39/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 40/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 41/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 43/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 44/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 45/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 46/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 47/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 48/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 49/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 50/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 51/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 52/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 54/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 55/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 56/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 57/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 58/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 59/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 61/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 68/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 70/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 73/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 74/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 77/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 84/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 90/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 93/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 94/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 96/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 98/10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger medium hits: 1 | Medium-risk: admin panels, config files | +10 | |
| Danger medium hits: 106 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 109 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 111 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 112 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 122 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 126 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 141 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 148 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 159 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 183 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 186 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 2 | Medium-risk: admin panels, config files | +20 | |
| Danger medium hits: 222 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 348 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 349 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 404 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 461 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 660 | 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: 82 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 84 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 94 | Medium-risk: admin panels, config files | +60 | |
| Danger strong hits: 1 | High-risk paths: shells, RCE vectors, exploits | +25 | |
| Danger strong hits: 10 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 2 | High-risk paths: shells, RCE vectors, exploits | +50 | |
| Danger strong hits: 3 | High-risk paths: shells, RCE vectors, exploits | +75 | |
| Danger strong hits: 34 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 36 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 4 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 42 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 46 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 6 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 64 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 7 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 8 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Probe 302→404 | Behavioral anomaly detected by automated analysis | +20 | |
| UA suspicious | Behavioral anomaly detected by automated analysis | +15 |
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 20.91.203.45 is blocked at application level (HTTP 403)
- Consider blocking at firewall level (iptables/CSF) to reduce server load
- Report abuse to the network provider via their abuse contact
- Ensure sensitive files (.env, .git, backups) are not accessible from the web
🔎 Directory Scan Defense
IP 20.91.203.45 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.
🌊 Traffic Flood Defense
IP 20.91.203.45 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.
🤖 Bot Detection
Address UA spoofing from 20.91.203.45: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.
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
20.91.203.45 has been assigned a threat score of 280/100 (Critical). This places it in the critical threat category. Immediate blocking is strongly advised across all network perimeters.
The following attack categories were identified:
📊 Threat Analysis
Threat intelligence analysis has linked 20.91.203.45 to malicious activity originating from Gävle, Sweden, operating on the network of Microsoft Corporation. The address has been under observation since its initial detection. Over a period of 8 days, this IP generated 4,802 malicious requests, averaging approximately 600.3 requests per day. Classified as a hosting IP, this address likely runs on a rented server or cloud instance. Attackers prefer datacenter IPs for their high bandwidth and disposable nature. The diversity of 3 separate attack methods suggests a comprehensive attack toolkit — likely an automated scanner that tests for vulnerabilities across multiple categories. With 101 flagged addresses, Sweden represents a significant presence in our threat database. At 280/100, this is an extremely high-risk address. All traffic should be considered hostile.
This IP belongs to a hosting or data center provider. Malicious traffic from hosting infrastructure often originates from compromised VPS instances, rented servers used for scanning campaigns, or abused free-tier cloud accounts. Hosting providers typically respond to abuse reports within 24-72 hours.
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.
💡 Server-Side Request Forgery (SSRF)
SSRF attacks trick servers into making requests to internal resources that should not be publicly accessible. This can expose cloud metadata endpoints, internal APIs, and private network services, potentially leading to full infrastructure compromise.