IP Threat Report
173.239.196.138
ABUSE.MOM — BEHAVE OR GET EXPOSED
Geolocation & Classification
Detection Signatures
| Signature | Description | Points | Severity |
|---|---|---|---|
| UA changed for same IP | Multiple User-Agents — bot rotation technique | +25 | |
| Danger strong hits: 64 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Burst: 14 req / 2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst: 50 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 35 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Burst: 49 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 195 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger medium hits: 508 | Medium-risk: admin panels, config files | +60 | |
| Burst: 13 req / 2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst: 44 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 101 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Burst: 12 req / 2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst: 41 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 167 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger medium hits: 451 | Medium-risk: admin panels, config files | +60 | |
| Danger strong hits: 55 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Burst: 10 req / 2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst: 35 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 44 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Burst: 33 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 37 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger medium hits: 97 | Medium-risk: admin panels, config files | +60 | |
| Burst: 11 req / 2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst: 34 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 204 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger medium hits: 542 | Medium-risk: admin panels, config files | +60 | |
| Burst: 36 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 158 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger medium hits: 417 | Medium-risk: admin panels, config files | +60 | |
| Burst: 38 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 148 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger medium hits: 389 | Medium-risk: admin panels, config files | +60 | |
| Burst: 37 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 214 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger medium hits: 570 | Medium-risk: admin panels, config files | +60 | |
| Burst: 39 req / 10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger strong hits: 65 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger medium hits: 156 | Medium-risk: admin panels, config files | +60 | |
| Burst: 40 req / 10s | Abnormally fast request rate — automated scanning | +35 |
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 173.239.196.138 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 173.239.196.0/24
- Report abuse to the network provider via their abuse contact
- Ensure sensitive files (.env, .git, backups) are not accessible from the web
🤖 Bot Detection
Address UA spoofing from 173.239.196.138: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.
🌊 Flood / DDoS Mitigation
Implement limit_req_zone in nginx. Deploy CDN with DDoS protection. Configure SYN cookies and connection tracking to throttle 173.239.196.138.
Neighbors in 173.239.196.0/24
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
173.239.196.138 has been assigned a threat score of 255/100 (Critical). This is a critical-level threat. Systems administrators should treat this IP as hostile and block all inbound connections without exception.
The following attack categories were identified:
📊 Threat Analysis
The address 173.239.196.138 originates from Yangon, MM, operating on the network of F.N.S. HOLDINGS LIMITED. It was identified through automated analysis of incoming network traffic across monitored endpoints. The address has been active for 1 days in our monitoring system, producing 13 flagged requests at a rate of ~13/day. Operating from a residential network, this IP may represent a compromised home gateway or IoT device that has been drafted into a larger attack infrastructure. Two attack patterns were identified (User-Agent Anomaly and Request Flooding), suggesting a semi-automated campaign that targets multiple vulnerabilities. MM currently accounts for 31 blocked IPs in our database, making it a notable source of malicious traffic. A score of 255/100 places this address in the top tier of severity. Block and investigate any historical connections.
This IP is classified as residential, suggesting it may belong to a compromised home device, IoT botnet member, or an infected personal computer. Residential IPs involved in attacks often indicate malware infection without the owner's knowledge.
Related Threats
Security Intelligence
💡 User-Agent Analysis Techniques
Analyzing User-Agent strings reveals automated tools masquerading as legitimate browsers. Inconsistencies between claimed browser capabilities and actual behavior, impossible version combinations, and known scanner signatures help identify malicious clients.
💡 Web Cache Poisoning Attacks
Cache poisoning manipulates web cache behavior to serve malicious content to other users. By identifying unkeyed inputs that influence cached responses, attackers can inject JavaScript, redirect users, or cause denial of service at scale through the cache infrastructure.