ABUSE.MOM
THREAT REPORT

IP Threat Report
172.161.8.38

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-21 15:54:22
First seen: 2026-04-21 14:00:06
Last seen: 2026-04-21 15:00:07
220

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 220/100. Total malicious requests observed: 4.

UA_SUSDANGER_PATHBURST
01

Geolocation & Classification

IP Address
172.161.8.38
Type
Hosting
Country
🇨🇭 Switzerland
City
Zurich
ISP
Microsoft
Organization
Microsoft Azure Cloud (switzerlandnorth)
Autonomous System
AS8075 Microsoft Corporation
Hit Count
4
02

Detection Signatures

SignatureDescriptionPointsSeverity
UA suspicious (short/empty)Behavioral anomaly detected by automated analysis+15
Danger strong hits: 3High-risk paths: shells, RCE vectors, exploits+75
Danger medium hits: 166Medium-risk: admin panels, config files+60
Burst: 54 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 175 req / 10sAbnormally fast request rate — automated scanning+35
Danger medium hits: 170Medium-risk: admin panels, config files+60
Burst: 39 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 127 req / 10sAbnormally fast request rate — automated scanning+35
Burst: 49 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 125 req / 10sAbnormally fast request rate — automated scanning+35
Burst: 53 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 162 req / 10sAbnormally fast request rate — automated scanning+35
Σ = 490
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

2026-04-21 14:00:06
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: 3 (+75), Danger medium hits: 166 (+60)
2026-04-21 15:00:07
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

Microsoft
AS8075 · 🇨🇭 Switzerland
06

Recommendations

Actions taken & recommended

  • IP 172.161.8.38 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

🤖 Bot Detection

Address UA spoofing from 172.161.8.38: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.

🌊 Flood / DDoS Mitigation

Implement limit_req_zone in nginx. Deploy CDN with DDoS protection. Configure SYN cookies and connection tracking to throttle 172.161.8.38.

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

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

10

Threat Analysis

172.161.8.38 has been assigned a threat score of 220/100 (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:

User-Agent AnomalyRequest Flooding

📊 Threat Analysis

172.161.8.38 is registered in Zurich, Switzerland, operating on the network of Microsoft. This IP first appeared in our threat feeds after triggering multiple behavioral detection signatures. The address has been active for 1 days in our monitoring system, producing 4 flagged requests at a rate of ~4/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 dual attack vectors of User-Agent Anomaly combined with Request Flooding indicate a coordinated assault rather than opportunistic scanning. Switzerland currently accounts for 101 blocked IPs in our database, making it a significant source of malicious traffic. With a threat score of 220/100, this IP is among the most dangerous addresses in our database. Immediate and complete blocking is strongly recommended.

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 Switzerland

51.107.69.151 (280)20.250.10.152 (280)20.203.180.135 (280)20.203.136.132 (280)20.203.129.217 (280)View all →

🏢 Same network: AS8075

74.241.249.229 (340)4.182.24.88 (285)20.65.61.3 (283)4.205.39.97 (283)20.29.71.103 (283)View all →
12

Security Intelligence

💡 User-Agent Analysis Techniques

Analyzing User-Agent strings reveals automated tools masquerading as legitimate browsers. Inconsistencies between claimed browser capabilities and actual behavior, impossible version combinations, and known scanner signatures help identify malicious clients.

💡 TLS Certificate Misconfigurations

Expired, self-signed, or misconfigured TLS certificates create security vulnerabilities and trust issues. Certificate monitoring, automated renewal through ACME protocols, and proper certificate chain configuration prevent both security gaps and service disruptions.

🔍 Check Any IP Address

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