ABUSE.MOM
THREAT REPORT

IP Threat Report
158.158.32.90

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-30 09:02:56
First seen: 2026-03-27 10:00:07
Last seen: 2026-03-27 15:00:08
280

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 280/100. Total malicious requests observed: 7.

UA_SUSDANGER_PATHBURSTRATIO_404REDIRECT_PROBE
01

Geolocation & Classification

IP Address
158.158.32.90
Type
Hosting
Country
🇪🇸 Spain
City
Madrid
ISP
Microsoft Corporation
Organization
Microsoft Azure Cloud (spaincentral)
Autonomous System
AS8075 Microsoft Corporation
Hit Count
7
02

Detection Signatures

SignatureDescriptionPointsSeverity
UA suspicious (short/empty)Behavioral anomaly detected by automated analysis+15
Danger strong hits: 18High-risk paths: shells, RCE vectors, exploits+100
Danger medium hits: 252Medium-risk: admin panels, config files+60
Burst: 33 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 106 req / 10sAbnormally fast request rate — automated scanning+35
Danger strong hits: 20High-risk paths: shells, RCE vectors, exploits+100
Danger medium hits: 324Medium-risk: admin panels, config files+60
Burst: 32 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 102 req / 10sAbnormally fast request rate — automated scanning+35
Danger strong hits: 4High-risk paths: shells, RCE vectors, exploits+100
Danger medium hits: 54Medium-risk: admin panels, config files+60
Burst: 24 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 71 req / 10sAbnormally fast request rate — automated scanning+35
Burst: 41 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 146 req / 10sAbnormally fast request rate — automated scanning+35
Danger strong hits: 12High-risk paths: shells, RCE vectors, exploits+100
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Probe pattern 302->404 same pathBehavioral anomaly detected by automated analysis+20
Burst: 39 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 122 req / 10sAbnormally fast request rate — automated scanning+35
Danger strong hits: 15High-risk paths: shells, RCE vectors, exploits+100
Danger medium hits: 217Medium-risk: admin panels, config files+60
Burst: 35 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 117 req / 10sAbnormally fast request rate — automated scanning+35
Danger strong hits: 3High-risk paths: shells, RCE vectors, exploits+75
Danger medium hits: 35Medium-risk: admin panels, config files+60
Burst: 53 req / 10sAbnormally fast request rate — automated scanning+35
Σ = 1380
03

Observed Activity

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

[redacted]
GET
/
200
[redacted]
GET
/page
200
Requests shown: 2 · HTTP 404: 0 · Dangerous patterns: 0

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

04

Timeline

2026-03-27 10:00:07
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
UA suspicious (short/empty) (+15), Danger strong hits: 18 (+100), Danger medium hits: 252 (+60)
2026-03-27 15:00:08
Last malicious request observed
Total score reached: 280/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Microsoft Corporation
AS8075 · 🇪🇸 Spain
06

Recommendations

Actions taken & recommended

  • IP 158.158.32.90 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 158.158.32.0/24
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🤖 User-Agent Anomaly Defense

IP 158.158.32.90 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

🌊 Flood / DDoS Mitigation

Implement limit_req_zone in nginx. Deploy CDN with DDoS protection. Configure SYN cookies and connection tracking to throttle 158.158.32.90.

🔎 Directory Scan Defense

IP 158.158.32.90 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

07

Neighbors in 158.158.32.0/24

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.

⛔ LISTED
zen.spamhaus.org
✓ Clean
dnsbl.sorbs.net
✓ Clean
ix.dnsbl.manitu.net
✓ Clean
dnsbl-1.uceprotect.net
✓ Clean
psbl.surriel.com
✓ Clean
b.barracudacentral.org
✓ Clean
truncate.gbudb.net
✓ Clean
bl.spamcop.net

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

10

Threat Analysis

158.158.32.90 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:

User-Agent AnomalyRequest FloodingPath Enumeration

📊 Threat Analysis

Threat intelligence analysis has linked 158.158.32.90 to malicious activity originating from Madrid, Spain, operating on the network of Microsoft Corporation. The address has been under observation since its initial detection. Over a period of 1 days, this IP generated 7 malicious requests, averaging approximately 7 requests per day. Operating from datacenter infrastructure, this IP is typical of addresses used in organized attack operations. Cloud and VPS providers are commonly exploited as launching platforms for automated scanning. With 3 different attack patterns detected, this IP exhibits behavior characteristic of advanced automated scanning frameworks. With 101 flagged addresses, Spain 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.

11

Related Threats

🇪🇸 Top threats from Spain

158.173.36.160 (305)212.30.33.72 (305)45.67.99.32 (305)158.158.33.103 (280)158.158.105.51 (280)View all →

🏢 Same network: AS8075

74.241.249.229 (340)20.151.111.128 (308)4.182.24.88 (285)20.65.61.3 (283)4.205.39.97 (283)View all →
12

Security Intelligence

💡 HTTP Header Analysis for Threat Detection

Examining HTTP headers beyond User-Agent reveals attack tools and automated scripts. Missing standard headers, unusual ordering, non-standard values, and inconsistencies with claimed client identity all serve as reliable detection signals.

💡 Rate Limiting and Throttling Strategies

Effective rate limiting must balance protection against abuse with allowing legitimate traffic bursts. Sliding window algorithms, token buckets, and adaptive thresholds based on client reputation provide layered defense against flooding attacks.

🔍 Check Any IP Address

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