Summary (Bottom Line Up Front)
Source IP 106.214.8.216 conducted intensive SMB exploitation probes targeting port 445 over a 1-hour window on March 26, 2026, generating 3,009 security events with 867 confirmed SMB exploit attempts. This activity represents a HIGH severity threat consistent with automated vulnerability scanning or exploitation framework usage. Immediate SMB hardening and monitoring enhancements are recommended.
Activity Timeline
INITIAL REPORT2026-03-26T15:10:09Z
Source: Analyst Manual Entry
Source IP 106.214.8.216 conducted intensive SMB exploitation probes targeting port 445 over a 1-hour window on March 26, 2026, generating 3,009 security events with 867 confirmed SMB exploit attempts. This activity represents a HIGH severity threat consistent with automated vulnerability scanning or exploitation framework usage. Immediate SMB hardening and monitoring enhancements are recommended.
Technical details
- Attack Vector: SMB protocol exploitation targeting TCP port 445
- Volume: 3,009 total events over 1-hour period (08:00-09:00 UTC, March 26, 2026)
- Primary Technique: SMB_EXPLOIT_PROBE with SMBv1 protocol detection (867 instances)
- MITRE Mapping: Likely T1021.002 (Remote Services: SMB/Windows Admin Shares)
- Kill Chain Phase: Initial Access/Discovery
- Source Characteristics: Unknown geolocation, no reverse DNS, non-VPN infrastructure
- IOC: 106.214.8.216 (source IP)
IOCs
IP:106.214.8.216
Recommendations
- Block source IP 106.214.8.216 at perimeter firewalls and update threat intelligence feeds
- Disable SMBv1 protocol across all Windows systems and enable SMBv3 with encryption
- Implement network segmentation to restrict SMB traffic to authorized administrative subnets only
- Deploy enhanced monitoring for SMB authentication failures and unusual file share access patterns
- Conduct immediate audit of SMB-accessible shares and verify proper access controls are enforced