ABUSE.MOM
THREAT REPORT

IP Threat Report
161.33.31.141

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-09-13 12:09:10
First seen: 2026-09-02 01:51:34
Last seen: 2026-09-13 01:18:07
220

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 220/100. Total malicious requests observed: 780.

BURSTDANGER_PATHRATIO_404REDIRECT_PROBEREFERERUA_CHANGED
01

Geolocation & Classification

IP Address
161.33.31.141
Type
Hosting
Country
🇯🇵 Japan
City
Osaka
ISP
Oracle Corporation
Organization
Oracle Cloud Infrastructure (ap-osaka-1)
Autonomous System
AS31898 Oracle Corporation
Hit Count
780
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
Burst 5/2sAbnormally fast request rate — automated scanning+35
Burst 6/2sAbnormally fast request rate — automated scanning+35
Burst 7/2sAbnormally fast request rate — automated scanning+35
Burst 8/2sAbnormally fast request rate — automated scanning+35
Danger medium hits: 3Medium-risk: admin panels, config files+30
Danger medium hits: 5Medium-risk: admin panels, config files+50
Danger strong hits: 4High-risk paths: shells, RCE vectors, exploits+100
Danger strong hits: 6High-risk paths: shells, RCE vectors, exploits+100
Danger strong hits: 9High-risk paths: shells, RCE vectors, exploits+100
Foreign refererReferer from unrelated external domain+10
Probe 302→404Behavioral anomaly detected by automated analysis+20
UA changedMultiple User-Agents — bot rotation technique+25
Σ = 615
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

2026-09-02 01:51:34
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), Burst 5/2s (+35)
2026-09-13 01:18:07
Last malicious request observed
Total score reached: 220/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Oracle Corporation
AS31898 · 🇯🇵 Japan
06

Recommendations

Actions taken & recommended

  • IP 161.33.31.141 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 161.33.31.141: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

🌊 Traffic Flood Defense

IP 161.33.31.141 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.

🤖 User-Agent Anomaly Defense

IP 161.33.31.141 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
spam.dnsbl.sorbs.net
✓ Clean
zen.spamhaus.org
✓ Clean
psbl.surriel.com
✓ Clean
bl.blocklist.de
✓ Clean
cbl.abuseat.org
✓ Clean
b.barracudacentral.org
✓ Clean
dnsbl.dronebl.org

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

10

Threat Analysis

161.33.31.141 has been assigned a threat score of 220/100 (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 EnumerationRequest FloodingUser-Agent Anomaly

📊 Threat Analysis

IP address 161.33.31.141 has been traced to Osaka, Japan, operating on the network of Oracle Corporation. Our threat detection systems have flagged this address based on observed malicious behavior patterns. The address has been active for 10 days in our monitoring system, producing 780 flagged requests at a rate of ~78/day. This address belongs to a datacenter or cloud hosting provider. Hosting IPs are frequently leveraged by threat actors who rent cheap VPS instances specifically for conducting attacks. The combination of 3 distinct attack vectors indicates a sophisticated, multi-pronged threat actor deploying automated tools that probe multiple attack surfaces simultaneously. A score of 220/100 places this address in the top tier of severity. Block and investigate any historical connections.

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 Japan

168.110.63.243 (320)129.225.172.187 (310)217.142.254.183 (233)217.142.239.239 (210)158.101.144.198 (125)View all →

🏢 Same network: AS31898

168.110.63.243 (320)129.151.133.112 (320)81.208.175.87 (320)129.225.5.36 (310)140.245.63.215 (310)View all →
12

Security Intelligence

💡 DDoS Mitigation Approaches

Distributed denial of service attacks overwhelm infrastructure with traffic volume. Effective mitigation combines always-on traffic scrubbing, anycast network distribution, rate limiting, and the ability to quickly scale absorption capacity during attacks.

💡 Zero Trust Architecture Principles

Zero trust eliminates implicit trust based on network location. Every access request is verified regardless of source, minimizing the impact of compromised credentials or network breaches. Implementation requires strong identity verification and continuous authorization.

🔍 Check Any IP Address

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