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medium advisory

SeroRAT command and control infrastructure

ThreatFox identified a new command-and-control server (143.20.134.177:224) associated with the SeroRAT malware family.

Triage facts

Revision 1
Evidence
Unknown
Severity
Medium
Action
Elevated
Sources
1 public source
Freshness
Revision 1Nov 5, 13:33 UTC
Detection
1 IOC
Source quality
B2Likely

ThreatFox has reported a new infrastructure indicator associated with the SeroRAT remote access trojan. The identified indicator is an IP address and port combination (143.20.134.177:224) acting as a botnet command-and-control (C2) node.

Impact

Successful communication with this infrastructure may indicate a compromised host actively communicating with SeroRAT controllers, potentially facilitating unauthorized remote access, data exfiltration, or secondary payload delivery.

Recommendation

  • Block the IP address 143.20.134.177 on perimeter network devices and egress firewalls.
  • Review historical firewall and proxy logs for any communication with the identified IP address.
  • If matches are found, initiate incident response procedures to isolate the affected host and perform memory forensics to identify the SeroRAT persistence mechanism.

Immediate actions

Block 143.20.134.177 at the network perimeter.

SOC 4h

Threat Hunt

Identify endpoints communicating with 143.20.134.177 on port 224.

T1071.001 high high confidence hunt now

Data: Firewall logs, Proxy logs, NetFlow data

Indicators of compromise

1

ip

TypeValue
ip143.20.134.177