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Threat Intelligence Briefing: IP 163.5.241.53/32

Summary:

The IP address 163.5.241.53/32 was observed with multiple activities that warrant attention from SOC teams. Based on the gathered data, the IP is associated with a range of activities, some of which may pose potential security risks. This briefing provides a comprehensive overview of the IP's profile, historical observations, relationships, and neighborhood data.

Profile:

• Owner Information: The IP address 163.5.241.53/32 is registered to a known internet service provider. The registration records indicate a company based in China, typically involved in providing internet connectivity services.
• Domain Association: The IP was linked to several domains that have been flagged for hosting malicious content, including phishing pages and malware distribution sites. These domains have been dynamically hosted on the IP address, suggesting a pattern of malicious use.

Observation History:

• Malicious Activity: Historical data indicates repeated associations with malware distribution, particularly ransomware and spyware. The IP has been seen communicating with command and control (C&C) servers.
• Phishing Campaigns: There have been instances where this IP was part of phishing campaigns targeting financial institutions, utilizing the IP to host fraudulent login pages designed to harvest credentials.
• Network Traffic Patterns: Unusual traffic patterns have been detected, such as high volumes of outbound traffic during off-peak hours, which is indicative of data exfiltration or botnet activity.

Relationships:

• Peer IPs: Analysis of peer IPs in the same subnet reveals several other addresses with similar malicious activities. This clustering suggests a coordinated effort to use the shared infrastructure for illicit purposes.
• Known Threat Actors: The IP has been linked to threat actors known for cyber espionage and financial fraud. Previous campaigns attributed to these actors have involved sophisticated techniques such as spear-phishing and social engineering.

Neighborhood Data:

• Subnet Analysis: The broader subnet (163.5.0.0/16) contains multiple IPs associated with legitimate services, but also includes other suspicious IPs, indicating a mixed-use environment where both legitimate and malicious activities coexist.
• Geolocation: The IP is geolocated within China, aligning with the registered owner's location. This geolocation context is relevant for understanding potential geopolitical implications and targeting strategies.

Actionable Recommendations:

1. Monitoring and Alerts: Implement continuous monitoring of network traffic to and from this IP. Set up alerts for any communications with known malicious domains or unusual traffic patterns.

2. Blocking and Filtering: Consider blocking or filtering traffic associated with this IP, especially if it aligns with known malicious patterns or if the IP is part of a phishing campaign.

3. User Awareness: Enhance user awareness training to recognize phishing attempts and avoid interactions with suspicious domains hosted on this IP.

4. Incident Response: Prepare incident response plans for potential compromises involving this IP, including steps for containment, eradication, and recovery.

This intelligence briefing aims to provide SOC analysts with the necessary information to mitigate potential threats associated with IP 163.5.241.53/32. Further analysis and correlation with internal threat intelligence may be beneficial for a comprehensive defense strategy.

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.