CastleLoader Malware — Analysis, Campaigns & Threat Activity

Threat entity extracted from intelligence sources

Frequency
17
occurrences
First Seen
November 27, 2025
Last Seen
May 19, 2026

CastleLoader is a malware family tracked across 11 threat clusters and 17 intelligence report mentions on ThreatCluster. First observed November 27, 2025; most recent activity May 19, 2026.

Related Threat Clusters

Recent Intelligence Reports

  • Microsoft's MSHTA Legacy Tool Still Powers Malware Campaigns on Windows — Bitdefender · May 19, 2026
  • This selfie background editor is a password-stealing trap — Cybernews · May 1, 2026
  • ClickFix Removes Your Background but Leaves the Malware — Huntress · April 30, 2026
  • Iranian MOIS Actors & the Cyber Crime Connection — Research.Checkpoint · March 10, 2026
  • LummaStealer activity spikes post — Securityaffairs.Co · February 12, 2026
  • Once-hobbled Lumma Stealer is back with lures that are hard to resist — Ground.News · February 12, 2026
  • Fake CAPTCHA Attacks Exploit Key Entry Point for LummaStealer Malware — Gbhackers · February 12, 2026
  • LummaStealer infections surge after CastleLoader malware campaigns — Bleepingcomputer · February 11, 2026

CVSS v3.1 Breakdown