ABUSE.MOM
THREAT REPORT

IP Threat Report
45.156.129.157

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-30 11:28:38
First seen: 2026-03-10 01:00:06
Last seen: 2026-05-30 11:24:07
95

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 95/100. Total malicious requests observed: 218.

DANGER_PATHRATIO_404REDIRECT_PROBEREFERER
01

Geolocation & Classification

IP Address
45.156.129.157
Type
Residential
Country
🇺🇸 United States
City
Chicago
ISP
NSEC - Sistemas Informaticos, S.A.
Organization
Inap CHI
Autonomous System
AS211680 NSEC - Sistemas Informaticos, S.A.
Hit Count
218
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Danger strong hits: 1High-risk paths: shells, RCE vectors, exploits+25
Danger strong hits: 2High-risk paths: shells, RCE vectors, exploits+50
Foreign refererReferer from unrelated external domain+10
Foreign referer seenReferer from unrelated external domain+10
Probe 302→404Behavioral anomaly detected by automated analysis+20
Probe pattern 302->404 same pathBehavioral anomaly detected by automated analysis+20
Σ = 150
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

2026-03-10 01:00:06
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio 40-60% (+15), Danger strong hits: 1 (+25), Danger strong hits: 2 (+50)
2026-05-30 11:24:07
Last malicious request observed
Total score reached: 95/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

NSEC - Sistemas Informaticos, S.A.
AS211680 · 🇺🇸 United States
06

Recommendations

Actions taken & recommended

  • IP 45.156.129.157 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 45.156.129.0/24
  • 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 45.156.129.157: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

07

Neighbors in 45.156.129.0/24

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

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

10

Threat Analysis

45.156.129.157 has been assigned a threat score of 95/100 (Critical). A score this high marks a critical threat actor. This address has demonstrated persistent, aggressive malicious behavior across multiple detection vectors.

The following attack categories were identified:

Path Enumeration

📊 Threat Analysis

Network traffic from 45.156.129.157, located in Chicago, United States, operating on the network of NSEC - Sistemas Informaticos, S.A., has been classified as malicious by our automated threat scoring engine. Our sensors captured 218 malicious requests from this address across a 81-day span, reflecting a sustained attack cadence of ~2.7 requests per day. This is a residential IP address, suggesting a compromised home device such as a router, smart appliance, or infected workstation participating in a botnet. Active path scanning has been detected — this IP probes for hundreds of common file and directory names. Our records show 44 malicious IPs originating from United States, positioning it as a notable contributor to global threat activity. A score of 95/100 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.

11

Related Threats

🇺🇸 Top threats from United States

45.156.129.176 (130)45.156.129.156 (125)45.156.129.116 (120)45.156.129.95 (118)45.156.129.164 (110)View all →

🏢 Same network: AS211680

45.156.128.108 (145)45.156.128.155 (140)45.156.128.176 (130)45.156.129.176 (130)45.156.128.61 (128)View all →
12

Security Intelligence

💡 Command Injection Techniques

Command injection occurs when attackers insert operating system commands through application inputs. Successful exploitation grants direct server access, enabling data theft, malware installation, and lateral movement across networks.

💡 Hacktivism and Ideological Attacks

Hacktivism combines hacking skills with political or social motivations. DDoS campaigns, website defacements, and data leaks target organizations based on ideological disagreements, adding unpredictable threat actors to the landscape.

🔍 Check Any IP Address

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