Summary (Bottom Line Up Front)
IP address 45.186.33.225 conducted 219 credential capture attempts against Telnet services over a one-hour period on 2026-03-28. This activity represents typical opportunistic scanning with low novelty and medium threat level. Network defenders should verify Telnet service exposure and implement appropriate access controls.
Activity Timeline
INITIAL REPORT2026-03-28T22:11:03Z
Source: Analyst Manual Entry
IP address 45.186.33.225 conducted 219 credential capture attempts against Telnet services over a one-hour period on 2026-03-28. This activity represents typical opportunistic scanning with low novelty and medium threat level. Network defenders should verify Telnet service exposure and implement appropriate access controls.
Technical details
- Attack Vector: TCP-based credential capture targeting Telnet (port 23)
- Volume: 219 events over 1-hour window (07:00-08:00 UTC, 2026-03-28)
- Protocols: TCP SYN scanning followed by Telnet authentication attempts
- Techniques: Brute force authentication with common credential pairs
- Assessment: Low-sophistication botnet activity with 95% confidence classification as noise
- IOCs: 45.186.33.225 (no reverse DNS, unknown ASN/geolocation)
IOCs
IP:45.186.33.225
Recommendations
- Audit network perimeter for exposed Telnet services and migrate to SSH where possible
- Implement rate limiting and account lockout policies for authentication services
- Deploy network segmentation to restrict Telnet access to authorized management networks only
- Monitor authentication logs for brute force patterns and failed login attempts
- Consider blocking traffic from 45.186.33.225 if no legitimate business requirements exist