CyberNew CyberNew
Ransomware & Malware BleepingComputer 1 month ago

Chinese Fire Ant hackers turn Cisco routers into spying platforms

CN
CyberNew Threat Research Desk
• Original Reporting: BleepingComputer
CyberNew Threat Intel Assessment
Assessed Severity: INFORMATIONAL
Impacted Surface
Client Endpoints & Operating Systems
Intelligence Sector
Ransomware & Malware

Analyst Takeaway

"The researchers discovered Fire Ant's new tactic after finding an active GRE (Generic Routing Encapsulation) tunnel interface on a Cisco IOS XR router that could not be explained by a running configuration or commit history. According to incident response company Sygnia, the threat actor switched from targeting VMware hypervisors to compromising Cisco routers, TACACS authentication servers, and..."

Recommended Defense & Mitigation

  • Threat Monitoring: Ingest published IOCs into SIEM/EDR detection rules for continuous telemetry monitoring.
  • Security Awareness: Alert staff and maintain baseline endpoint hardening across endpoints.
Curated & Verified by CyberNew Threat Intelligence Desk Standard Defense Framework (NIST / MITRE ATT&CK)

Chinese Fire Ant hackers turn Cisco routers into spying platforms

The researchers discovered Fire Ant's new tactic after finding an active GRE (Generic Routing Encapsulation) tunnel interface on a Cisco IOS XR router that could not be explained by a running configuration or commit history.

According to incident response company Sygnia, the threat actor switched from targeting VMware hypervisors to compromising Cisco routers, TACACS authentication servers, and Linux management hosts.

The researchers discovered Fire Ant's new tactic after finding on a Cisco IOS XR router an active GRE (Generic Routing Encapsulation) tunnel interface that could not be explained by a running configuration or commit history.

image

Further analysis revealed that Fire Ant had deployed custom malware on the devices, enabling persistence through a fake system service that ran the implant only during alternating hours.

Get the report

Source Verification & Original Intelligence

This threat report was reviewed by CyberNew analysts and cross-referenced with primary security disclosures from BleepingComputer.

Primary Advisory →