ABUSE.MOM
THREAT REPORT

IP Threat Report
85.137.53.159

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-30 07:53:50
First seen: 2026-05-23 01:05:24
Last seen: 2026-05-24 09:45:01
155

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 155/100. Total malicious requests observed: 90.

BURSTDANGER_PATH
01

Geolocation & Classification

IP Address
85.137.53.159
Type
Residential
Country
🇺🇦 Ukraine
City
Kyiv
ISP
Virtual Systems LLC
Organization
Virtual Systems LLC
Autonomous System
AS43641 SOLLUTIUM EU Sp z.o.o.
Hit Count
90
02

Detection Signatures

SignatureDescriptionPointsSeverity
Burst 7/2sAbnormally fast request rate — automated scanning+35
Danger medium hits: 2Medium-risk: admin panels, config files+20
Danger strong hits: 5High-risk paths: shells, RCE vectors, exploits+100
Σ = 155
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

2026-05-23 01:05:24
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Burst 7/2s (+35), Danger medium hits: 2 (+20), Danger strong hits: 5 (+100)
2026-05-24 09:45:01
Last malicious request observed
Total score reached: 155/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Virtual Systems LLC
AS43641 · 🇺🇦 Ukraine
06

Recommendations

Actions taken & recommended

  • IP 85.137.53.159 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

🌊 Flood / DDoS Mitigation

Implement limit_req_zone in nginx. Deploy CDN with DDoS protection. Configure SYN cookies and connection tracking to throttle 85.137.53.159.

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

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

10

Threat Analysis

85.137.53.159 has been assigned a threat score of 155/100 (Critical). This places it in the critical threat category. Immediate blocking is strongly advised across all network perimeters.

The following attack categories were identified:

Request Flooding

📊 Threat Analysis

Threat intelligence analysis has linked 85.137.53.159 to malicious activity originating from Kyiv, Ukraine, operating on the network of Virtual Systems LLC. The address has been under observation since its initial detection. During its 1-day observation window, we recorded 90 hostile requests from this IP — roughly 90 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. Rate-based attacks from this IP aim to overwhelm server resources through high-volume request flooding. Ukraine currently accounts for 101 blocked IPs in our database, making it a significant source of malicious traffic. A score of 155/100 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 Ukraine

104.28.230.33 (165)195.66.105.234 (165)104.28.156.60 (165)193.93.230.171 (165)104.28.198.33 (140)View all →

🏢 Same network: AS43641

View all →
12

Security Intelligence

💡 DDoS Mitigation Approaches

Distributed denial of service attacks overwhelm infrastructure with traffic volume. Effective mitigation combines always-on traffic scrubbing, anycast network distribution, rate limiting, and the ability to quickly scale absorption capacity during attacks.

💡 Network Flow Analysis

Analyzing network flows (NetFlow, sFlow, IPFIX) provides visibility into traffic patterns without inspecting packet contents. Flow data reveals scanning activity, data exfiltration, lateral movement, and command-and-control channels at scale.

🔍 Check Any IP Address

Share this report: