ABUSE.MOM
THREAT REPORT

IP Threat Report
154.91.176.171

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-08-30 20:23:07
First seen: 2026-08-26 23:58:42
Last seen: 2026-08-30 01:10:53
85

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 85/100. Total malicious requests observed: 110.

DANGER_PATHRATIO_404REFERER
01

Geolocation & Classification

IP Address
154.91.176.171
Type
Hosting
Country
🇭🇰 Hong Kong
City
Tseung Kwan O
ISP
Arosscloud Inc
Organization
Arosscloud INC
Autonomous System
AS400619 AROSSCLOUD INC.
Hit Count
110
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Danger medium hits: 6Medium-risk: admin panels, config files+60
Foreign refererReferer from unrelated external domain+10
Σ = 85
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

2026-08-26 23:58:42
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio 40-60% (+15), Danger medium hits: 6 (+60), Foreign referer (+10)
2026-08-30 01:10:53
Last malicious request observed
Total score reached: 85/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Arosscloud Inc
AS400619 · 🇭🇰 Hong Kong
06

Recommendations

Actions taken & recommended

  • IP 154.91.176.171 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 154.91.176.171: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

09

Blacklist Status (DNSBL)

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

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

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

10

Threat Analysis

154.91.176.171 has been assigned a threat score of 85/100 (Critical). This is a critical-level threat. Systems administrators should treat this IP as hostile and block all inbound connections without exception.

The following attack categories were identified:

Path Enumeration

📊 Threat Analysis

Threat intelligence analysis has linked 154.91.176.171 to malicious activity originating from Tseung Kwan O, Hong Kong, operating on the network of Arosscloud Inc. The address has been under observation since its initial detection. Our sensors captured 110 malicious requests from this address across a 3-day span, reflecting a sustained attack cadence of ~36.7 requests per day. Classified as a hosting IP, this address likely runs on a rented server or cloud instance. Attackers prefer datacenter IPs for their high bandwidth and disposable nature. The IP exhibits directory enumeration behavior, systematically requesting non-existent paths to discover hidden files and misconfigured resources. Our records show 101 malicious IPs originating from Hong Kong, positioning it as a significant contributor to global threat activity. The score of 85/100 indicates a confirmed malicious actor. Network-level blocking is appropriate.

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 Hong Kong

35.220.210.187 (298)20.24.198.93 (280)20.24.82.132 (280)20.187.125.76 (280)20.187.67.15 (280)View all →

🏢 Same network: AS400619

View all →
12

Security Intelligence

💡 Prototype Pollution Attacks

Prototype pollution manipulates JavaScript object prototypes to inject properties that affect all objects in an application. This can lead to denial of service, property injection, and in some cases remote code execution in Node.js applications.

💡 Watering Hole Attack Strategy

Watering hole attacks compromise websites frequently visited by target organizations. Rather than attacking targets directly, adversaries infect trusted resources, exploiting the inherent trust users place in regularly visited sites.

🔍 Check Any IP Address

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