ABUSE.MOM
THREAT REPORT

IP Threat Report
143.248.98.189

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-27 12:31:10
First seen: 2026-02-20 00:50:05
Last seen: 2026-02-24 07:00:05
150

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 150/100. Total malicious requests observed: 6.

DANGER_PATHRATIO_404REDIRECT_PROBEUA_SUS
01

Geolocation & Classification

IP Address
143.248.98.189
Type
Residential
Country
🇰🇷 South Korea
City
Daejeon
ISP
Korea Advanced Institute of Science and Technology
Organization
Kaist
Autonomous System
AS1781 Korea Advanced Institute of Science and Technology
Hit Count
6
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger strong hits: 2High-risk paths: shells, RCE vectors, exploits+50
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Probe pattern 302->404 same pathBehavioral anomaly detected by automated analysis+20
UA suspicious (short/empty)Behavioral anomaly detected by automated analysis+15
Danger strong hits: 4High-risk paths: shells, RCE vectors, exploits+100
Σ = 200
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

2026-02-20 00:50:05
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger strong hits: 2 (+50), 404 ratio 40-60% (+15), Probe pattern 302->404 same path (+20)
2026-02-24 07:00:05
Last malicious request observed
Total score reached: 150/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Korea Advanced Institute of Science and Technology
AS1781 · 🇰🇷 South Korea
06

Recommendations

Actions taken & recommended

  • IP 143.248.98.189 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

🔎 Directory Scan Defense

IP 143.248.98.189 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

🤖 User-Agent Anomaly Defense

IP 143.248.98.189 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
Spamhaus ZEN

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

10

Threat Analysis

143.248.98.189 has been assigned a threat score of 150/100 (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 EnumerationUser-Agent Anomaly

📊 Threat Analysis

IP address 143.248.98.189 has been traced to Daejeon, South Korea, operating on the network of Korea Advanced Institute of Science and Technology. Our threat detection systems have flagged this address based on observed malicious behavior patterns. During its 4-day observation window, we recorded 6 hostile requests from this IP — roughly 1.5 per day on average. This residential IP is likely a compromised consumer device. Home routers and IoT equipment with default credentials are prime targets for botnet operators. The dual attack vectors of Path Enumeration combined with User-Agent Anomaly indicate a coordinated assault rather than opportunistic scanning. With 101 flagged addresses, South Korea represents a significant presence in our threat database. A score of 150/100 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 South Korea

4.217.180.34 (280)20.214.155.242 (280)20.214.157.214 (280)52.231.66.246 (280)20.194.25.241 (280)View all →

🏢 Same network: AS1781

View all →
12

Security Intelligence

💡 Brute Force Attack Mechanics

Brute force attacks systematically try username and password combinations to gain unauthorized access. Modern attacks leverage credential databases from previous breaches, testing millions of combinations using distributed botnets across multiple IP addresses.

💡 Race Condition Vulnerabilities

Race conditions occur when application behavior depends on the timing of concurrent operations. Attackers exploit these timing windows to bypass limits, duplicate transactions, or escalate privileges by sending carefully timed parallel requests.

🔍 Check Any IP Address

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