ABUSE.MOM
THREAT REPORT

IP Threat Report
37.21.7.36

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-30 07:19:10
First seen: 2026-02-28 13:00:04
Last seen: 2026-03-02 17:00:05
140

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 140/100. Total malicious requests observed: 5.

DANGER_PATHRATIO_404REDIRECT_PROBEBURSTREFERER
01

Geolocation & Classification

IP Address
37.21.7.36
Type
Residential
Country
🇷🇺 Russia
City
Chita
ISP
JSC Rostelecom regional branch "Siberia"
Organization
JSC Rostelecom regional branch Siberia
Autonomous System
AS12389 PJSC Rostelecom
Hit Count
5
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger medium hits: 10Medium-risk: admin panels, config files+60
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Probe pattern 302->404 same pathBehavioral anomaly detected by automated analysis+20
Burst: 6 req / 2sAbnormally fast request rate — automated scanning+35
Foreign referer seenReferer from unrelated external domain+10
Σ = 140
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

2026-02-28 13:00:04
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger medium hits: 10 (+60), 404 ratio 40-60% (+15), Probe pattern 302->404 same path (+20)
2026-03-02 17:00:05
Last malicious request observed
Total score reached: 140/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

JSC Rostelecom regional branch "Siberia"
AS12389 · 🇷🇺 Russia
06

Recommendations

Actions taken & recommended

  • IP 37.21.7.36 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 37.21.7.36 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

🌊 Traffic Flood Defense

IP 37.21.7.36 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.

09

Blacklist Status (DNSBL)

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

⛔ LISTED
Spamhaus ZEN

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

10

Threat Analysis

37.21.7.36 has been assigned a threat score of 140/100 (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:

Path EnumerationRequest Flooding

📊 Threat Analysis

Threat intelligence analysis has linked 37.21.7.36 to malicious activity originating from Chita, Russia, operating on the network of JSC Rostelecom regional branch "Siberia". The address has been under observation since its initial detection. During its 2-day observation window, we recorded 5 hostile requests from this IP — roughly 2.5 per day on average. The address is classified as residential, meaning it likely belongs to an end-user ISP connection. Malicious activity from residential IPs typically indicates device compromise or botnet membership. The dual attack vectors of Path Enumeration combined with Request Flooding indicate a coordinated assault rather than opportunistic scanning. Russia currently accounts for 190 blocked IPs in our database, making it a significant source of malicious traffic. With a threat score of 140/100, this IP is among the most dangerous addresses in our database. Immediate and complete blocking is strongly recommended.

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 Russia

157.22.102.172 (313)178.130.54.159 (288)72.56.191.6 (265)95.182.125.201 (265)91.240.87.225 (263)View all →

🏢 Same network: AS12389

91.122.56.59 (235)178.34.163.28 (173)87.225.37.4 (165)95.70.102.6 (165)87.225.66.136 (165)View all →
12

Security Intelligence

💡 Credential Stuffing at Scale

Credential stuffing uses stolen username-password pairs from data breaches to attempt logins across many websites. Since users frequently reuse passwords, these automated attacks achieve success rates of 0.1-2%, which translates to thousands of compromised accounts from millions of attempts.

💡 Threat Score Calculation Methods

Threat scoring combines multiple signals — request patterns, known signatures, IP reputation, geographic risk, and behavioral analysis — into a single actionable metric. Weighted scoring models allow tuning sensitivity to balance security with usability.

🔍 Check Any IP Address

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