ABUSE.MOM
THREAT REPORT

IP Threat Report
187.122.61.87

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-10-26 17:07:44
First seen: 2026-10-05 15:04:40
Last seen: 2026-10-11 01:00:40
60

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 60/100. Total malicious requests observed: 115.

DANGER_PATHRATIO_404REFERER
01

Geolocation & Classification

IP Address
187.122.61.87
Type
Residential
Country
🇧🇷 Brazil
City
Osasco
ISP
Claro NXT Telecomunicacoes Ltda
Organization
Claro NXT Telecomunicacoes Ltda
Autonomous System
AS28573 Claro NXT Telecomunicacoes Ltda
Hit Count
115
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio >= 60%Majority of requests returned 404 — enumeration+25
Danger strong hits: 1High-risk paths: shells, RCE vectors, exploits+25
Foreign refererReferer from unrelated external domain+10
Σ = 60
03

Observed Activity

Reconstructed HTTP requests from server access logs. Target domains redacted for security.

[redacted]
GET
/
200
Requests shown: 1 · HTTP 404: 0 · Dangerous patterns: 0

* Typical request patterns for detected signatures. Actual target domains are redacted.

04

Timeline

2026-10-05 15:04:40
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio >= 60% (+25), Danger strong hits: 1 (+25), Foreign referer (+10)
2026-10-11 01:00:40
Last malicious request observed
Total score reached: 60/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Claro NXT Telecomunicacoes Ltda
AS28573 · 🇧🇷 Brazil

We have detected 148 malicious IPs from this autonomous system.

View all IPs from AS28573 →
06

Recommendations

Actions taken & recommended

  • IP 187.122.61.87 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 187.122.61.0/24
  • 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 187.122.61.87: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

07

Neighbors in 187.122.61.0/24

Other blocked IPs from the same /24 subnet — indicates systematic abuse from this network range.

09

Blacklist Status (DNSBL)

This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.

✓ Clean
spam.dnsbl.sorbs.net
✓ Clean
cbl.abuseat.org
✓ Clean
dnsbl.dronebl.org
✓ Clean
b.barracudacentral.org
✓ Clean
zen.spamhaus.org
✓ Clean
bl.blocklist.de
✓ Clean
psbl.surriel.com

Checked: Spamhaus, SpamCop, Barracuda, SORBS, CBL, UCEProtect. Results may change over time.

10

Threat Analysis

187.122.61.87 has been assigned a threat score of 60/100 (High). The IP is rated as a high-level threat. Network administrators should implement blocking rules and monitor for any connections from this address.

The following attack categories were identified:

Path Enumeration

📊 Threat Analysis

Our monitoring infrastructure has identified 187.122.61.87, geolocated to Osasco, Brazil, operating on the network of Claro NXT Telecomunicacoes Ltda, as a source of suspicious network activity. Our sensors captured 115 malicious requests from this address across a 5-day span, reflecting a sustained attack cadence of ~23 requests per day. This residential IP is likely a compromised consumer device. Home routers and IoT equipment with default credentials are prime targets for botnet operators. Active path scanning has been detected — this IP probes for hundreds of common file and directory names. Our records show 2,193 malicious IPs originating from Brazil, positioning it as a major contributor to global threat activity. The score of 60/100 warrants active monitoring and rate-limiting. Full blocking is advisable for sensitive systems.

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.

11

Related Threats

🇧🇷 Top threats from Brazil

34.95.200.255 (320)107.149.152.45 (308)34.95.148.192 (298)35.247.218.13 (298)35.247.222.75 (295)View all →

🏢 Same network: AS28573

179.222.190.51 (178)186.221.196.113 (143)189.62.47.54 (140)186.205.10.119 (120)177.181.4.225 (120)View all →
12

Security Intelligence

💡 Remote Code Execution (RCE)

RCE vulnerabilities allow attackers to execute arbitrary code on target servers. These critical flaws often arise from deserialization bugs, template injection, or file upload vulnerabilities, and represent the highest severity class of web application weaknesses.

💡 Threat Intelligence Sharing Frameworks

Standards like STIX/TAXII, MISP, and OpenIOC enable automated sharing of threat intelligence between organizations. Collective defense through shared indicators, tactics, and procedures strengthens the entire security community against common threats.

🔍 Check Any IP Address

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