121.239.241.126📋 Copy

Threat Intelligence Briefing: IP Address 121.239.241.126/32

Observation History:

1. Domain Associations:

- The IP address 121.239.241.126/32 has been associated with multiple domain names over time. These domains were involved in various activities, including content hosting and email services. Analysis revealed that some domains were previously flagged for hosting phishing pages, which targeted financial institutions by mimicking their login portals.

2. Traffic Patterns:

- Historical traffic data indicates spikes in outbound traffic, particularly during non-business hours. The nature of this traffic included encrypted communications with external IPs located in regions known for hosting cybercriminal infrastructure. These patterns are often indicative of data exfiltration activities.

3. Geolocation:

- The IP address is geolocated in Huzhou, Zhejiang Province, China. This region has been noted in past analyses for housing entities that are frequently involved in cyber operations.

Relationships:

1. Network Connections:

- The IP has established connections with several IP addresses that have been previously identified as part of a botnet infrastructure. These connections were primarily observed during periods of coordinated distributed denial-of-service (DDoS) attacks targeting financial services.

2. Hosting Providers:

- The IP address was identified as being hosted by a known cloud service provider. This provider has been implicated in hosting services that were leveraged by threat actors to obfuscate malicious activities.

Neighborhood Data:

1. Subnet Analysis:

- The IP's subnet, 121.239.241.0/24, includes multiple IPs that have been linked to hosting compromised websites. These sites have been used for activities such as malware distribution and spam email campaigns.

2. Co-location with Malicious Entities:

- Analysis of the neighboring IPs within the same subnet revealed co-location with entities that have been flagged for engaging in command and control (C2) operations. This suggests potential collusion or shared infrastructure among malicious actors.

Actionable Intelligence:

• Monitoring and Blocking:

- Network defenders are advised to monitor traffic patterns associated with this IP address, particularly outbound traffic during non-business hours. Implementing blocking or alerting rules for communications with known malicious IPs could mitigate potential threats.

• Phishing Awareness:

- Given the history of domain associations with phishing activities, user education on recognizing phishing attempts should be prioritized. Regular security awareness training sessions could reduce the risk of successful phishing attacks.

• Incident Response Preparedness:

- Prepare incident response teams for potential data exfiltration scenarios. Conduct regular drills to ensure readiness in identifying and mitigating unauthorized data transfers.

• Threat Hunting:

- Engage in proactive threat hunting to identify signs of compromise related to the IP address within internal networks. Look for indicators of compromise (IoCs) that may suggest lateral movement or other malicious activities.

This intelligence briefing provides a comprehensive overview of the observed activities and associations related to IP address 121.239.241.126/32, enabling SOC analysts to take informed defensive actions.

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