Summary (Bottom Line Up Front)
IP address 198.199.69.186 conducted a concentrated multi-protocol reconnaissance campaign on February 24, 2026, targeting Oracle TNS, SMB, and web services within a one-minute timeframe. The attacker profile indicates HIGH threat level consistent with advanced persistent threat (APT) tactics. Immediate monitoring and defensive hardening of targeted services is recommended.
Activity Timeline
INITIAL REPORT2026-03-10T19:13:01Z
Source: Analyst Manual Entry
IP address 198.199.69.186 conducted a concentrated multi-protocol reconnaissance campaign on February 24, 2026, targeting Oracle TNS, SMB, and web services within a one-minute timeframe. The attacker profile indicates HIGH threat level consistent with advanced persistent threat (APT) tactics. Immediate monitoring and defensive hardening of targeted services is recommended.
Technical details
- Attack Window: February 24, 2026, 00:00-01:00 UTC (concentrated within 1-minute span)
- Protocols Observed: HTTP, Modbus, Unknown
- Attack Vectors: Oracle TNS version enumeration, SMB version 1 exploitation attempts, Server-Side Request Forgery (SSRF) targeting internal IP ranges
- Volume: 38 events across multiple attack types
- Threat Assessment: Evolved from generic scanning to sophisticated multi-service reconnaissance
- Infrastructure: 198.199.69.186 (no reverse DNS, non-VPN, unknown ASN)
IOCs
IP:198.199.69.186
Recommendations
- Block IP address 198.199.69.186 at network perimeter and monitor for related infrastructure
- Disable SMBv1 protocol across all Windows systems and network shares immediately
- Implement additional monitoring and access controls for Oracle TNS listeners on non-standard ports
- Deploy web application firewall rules to detect and block SSRF attempts targeting internal IP ranges
- Review logs for the February 24, 2026 00:00-01:00 UTC timeframe to identify any successful exploitation attempts