ABUSE.MOM
THREAT REPORT

IP Threat Report
89.153.136.156

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-09-13 02:34:44
First seen: 2026-07-09 04:04:26
Last seen: 2026-09-06 01:08:06
88

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 88/100. Total malicious requests observed: 981.

DANGER_PATHMETHODRATIO_404UA_CHANGED
01

Geolocation & Classification

IP Address
89.153.136.156
Type
Residential
Country
🇵🇹 Portugal
City
Braga
ISP
NOS COMUNICACOES S.A
Organization
NOS Comunicacoes S.A.
Autonomous System
AS2860 NOS COMUNICACOES, S.A.
Hit Count
981
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
404 ratio >= 60%Majority of requests returned 404 — enumeration+25
Danger medium hits: 1Medium-risk: admin panels, config files+10
Danger medium hits: 2Medium-risk: admin panels, config files+20
Danger medium hits: 4Medium-risk: admin panels, config files+40
POST seenBehavioral anomaly detected by automated analysis+8
UA changedMultiple User-Agents — bot rotation technique+25
Σ = 143
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

2026-07-09 04:04:26
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio 40-60% (+15), 404 ratio >= 60% (+25), Danger medium hits: 1 (+10)
2026-09-06 01:08:06
Last malicious request observed
Total score reached: 88/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

NOS COMUNICACOES S.A
AS2860 · 🇵🇹 Portugal
06

Recommendations

Actions taken & recommended

  • IP 89.153.136.156 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

🔎 Path Enumeration Protection

Block scanning from 89.153.136.156: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

🤖 User-Agent Anomaly Defense

IP 89.153.136.156 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

09

Blacklist Status (DNSBL)

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

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

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

10

Threat Analysis

89.153.136.156 has been assigned a threat score of 88/100 (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:

Path EnumerationUser-Agent Anomaly

📊 Threat Analysis

The address 89.153.136.156 originates from Braga, Portugal, operating on the network of NOS COMUNICACOES S.A. It was identified through automated analysis of incoming network traffic across monitored endpoints. The address has been active for 58 days in our monitoring system, producing 981 flagged requests at a rate of ~16.9/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 (Path Enumeration and User-Agent Anomaly), suggesting a semi-automated campaign that targets multiple vulnerabilities. With 70 flagged addresses, Portugal represents a notable presence in our threat database. At 88/100, this IP warrants immediate defensive action.

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 Portugal

94.23.78.49 (275)85.234.64.161 (170)89.114.245.185 (140)5.157.20.73 (140)5.157.20.49 (140)View all →

🏢 Same network: AS2860

View all →
12

Security Intelligence

💡 File Upload Vulnerabilities

Insecure file upload functionality allows attackers to upload web shells, malware, or scripts that execute on the server. Proper validation must check file content, not just extensions, and uploaded files should be stored outside the web root.

💡 Server-Side Template Injection

SSTI occurs when user input is embedded in server-side templates without sanitization. Successful exploitation often leads to remote code execution, as template engines typically have access to powerful server-side functionality.

🔍 Check Any IP Address

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