ABUSE.MOM
THREAT REPORT

IP Threat Report
85.137.57.233

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-29 13:25:13
First seen: 2026-05-20 13:00:09
Last seen: 2026-05-24 10:10:07
150

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 150/100. Total malicious requests observed: 329.

BOT_UADANGER_PATHREFERER
01

Geolocation & Classification

IP Address
85.137.57.233
Type
Residential
Country
🇺🇦 Ukraine
City
Kyiv
ISP
Virtual Systems LLC
Organization
Virtual Systems LLC
Autonomous System
Unknown
Hit Count
329
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger strong hits: 4High-risk paths: shells, RCE vectors, exploits+100
Foreign refererReferer from unrelated external domain+10
UA bot: Go-http-clientKnown bot/crawler User-Agent detected+40
Σ = 150
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

2026-05-20 13:00:09
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger strong hits: 4 (+100), Foreign referer (+10), UA bot: Go-http-client (+40)
2026-05-24 10:10:07
Last malicious request observed
Total score reached: 150/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
06

Recommendations

Actions taken & recommended

  • IP 85.137.57.233 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🤖 User-Agent Anomaly Defense

IP 85.137.57.233 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
cbl.abuseat.org
✓ Clean
bl.blocklist.de
✓ Clean
dnsbl.dronebl.org
✓ Clean
bl.spamcop.net
✓ Clean
psbl.surriel.com

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

10

Threat Analysis

85.137.57.233 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:

User-Agent Anomaly

📊 Threat Analysis

Network traffic from 85.137.57.233, located in Kyiv, Ukraine, operating on the network of Virtual Systems LLC, has been classified as malicious by our automated threat scoring engine. Our sensors captured 329 malicious requests from this address across a 3-day span, reflecting a sustained attack cadence of ~109.7 requests per day. This residential IP is likely a compromised consumer device. Home routers and IoT equipment with default credentials are prime targets for botnet operators. Detected suspicious User-Agent anomalies including empty, forged, or rapidly rotating UA strings — characteristic of automated scanning tools. With a threat score of 150/100, 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 Ukraine

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12

Security Intelligence

💡 Directory Traversal Attacks

Path traversal attacks attempt to access files outside the intended directory by manipulating file path references. Attackers use sequences like ../ to reach sensitive system files such as /etc/passwd or application configuration files.

💡 Residential Proxy Networks

Residential proxies route traffic through real home internet connections, making malicious traffic appear to come from legitimate users. Some networks install proxy software bundled with free applications, unknowingly conscripting millions of devices.

🔍 Check Any IP Address

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