T1071 - Application Layer Protocol - MITRE ATT&CK

Threat entity extracted from intelligence sources

Frequency
1102
occurrences
First Seen
November 19, 2025
Last Seen
August 31, 2026

Related Threat Clusters

Recent Intelligence Reports

  • ValleyRAT: When Legitimate Software Becomes a Malware Delivery Tool — Securityaffairs.Co · August 31, 2026
  • Attack hides malware in PNGs and drops custom reverse tunnel on victims' machines — Theregister · August 31, 2026
  • New RevStealer malware spreads as fake Claude Opus 5 desktop app — Cyberinsider · August 31, 2026
  • Chinese Fire Ant hackers turn Cisco routers into spying platforms — Bleepingcomputer · August 31, 2026
  • 2026 08 07 — docs.vulncheck.com · August 31, 2026
  • RevStealer Is Built to Be Silent — Morphisec · August 31, 2026
  • ValleyRAT Backdoor Hides in Signed Adware That Users Add to Antivirus Exclusions — Thehackernews · August 31, 2026
  • ValleyRAT masquerading as adware — Securelist · August 31, 2026

CVSS v3.1 Breakdown