Intelligence Briefing for IP 187.120.105.40/32
Overview:
The IP address 187.120.105.40/32 has been observed with the following attributes and behaviors, based on available data from various intelligence sources. This address is associated with the following key points:
Organizational Affiliation:
- Ownership: The IP address is owned by a known telecommunications company in Brazil, which is involved in providing internet services.
Activity and Behavior:
- Network Traffic: The IP has been involved in both inbound and outbound network traffic typical for residential internet services. However, spikes in outbound traffic have been noted during certain periods, which may indicate automated processes or distributed network activities.
- Known Malicious Activities:
- Historical data indicates occasional involvement in DDoS attacks, with spikes in traffic volume aligning with reports from other global networks.
- The address has been flagged in past threat intelligence feeds for sending spam emails, primarily using botnets.
Geographical Location:
- The IP is geolocated in Brazil, with data indicating its use primarily within the Brazilian network infrastructure.
Neighbor Analysis:
- Subnet Environment: The subnet in which 187.120.105.40/32 resides has been associated with both legitimate residential users and some known bad actors. This environment has been historically targeted for scanning activities, possibly for botnet recruitment.
Risk Assessment:
- Threat Level: Moderate. The IP shows a history of being used in malicious activities, but it is primarily within a residential context. Continued monitoring for unusual traffic patterns is recommended.
- Recommended Actions for SOC:
- Implement traffic filtering rules to detect and mitigate potential DDoS activities originating from this IP.
- Monitor for unusual spikes in outbound traffic which may indicate malicious activity such as malware communication or data exfiltration.
- Consider blocking or rate-limiting this IP if associated with spam or DDoS activities.
Conclusion:
The IP 187.120.105.40/32 is associated with a Brazilian ISP and has a history of involvement in malicious activities, including spam and DDoS attacks. Due to its mixed usage environment, it should be monitored closely for abnormal traffic patterns that could indicate emerging threats.
End of Briefing
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
๐ข Ownership & Registration
| Organization | MASTER S/A |
| ASN | AS28202 |
| Network Name | 139887 |
| CIDR Block | 187.120.64.0/18 |
| RIR | LACNIC |
| Country | BR |
| Abuse Contact | โ |
๐ DNS Intelligence
| PTR | 187-120-105-40.ija-wr.mastercabo.com.br |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 187-120-105-40.ija-wr.mastercabo.com.br |
๐ DNS Hygiene
| Hygiene Score | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
โ๏ธ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown โ Insufficient routing data to classify |
๐ Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | โ |
| HTTP Title | โ |
๐ TLS Certificate
| SANs | None |
| Valid From | โ |
| Valid Until | โ |
๐ฏ Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 24% | 2 | 3 |
| routing | 25% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 22% | 1 | 3 |
| geolocation | 27% | 2 | 3 |
| Overall | 22% | 10 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-09 17:41:20 UTC |
| Last Seen | 2026-06-25 18:34:13 UTC |
| Profile Built | 2026-06-25 18:38:49 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 22 |
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