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NEW HIGH B3

TerminalFix campaign deploys a reverse tunnel through multistage intrusion

B Microsoft Security Blog ·

Admiralty grading (A–F · 1–6)

Source reliability

  • A Completely reliable
  • B Usually reliable
  • C Fairly reliable
  • D Not usually reliable
  • E Unreliable
  • F Cannot be judged

Information credibility

  • 1 Confirmed
  • 2 Probably true
  • 3 Possibly true
  • 4 Doubtful
  • 5 Improbable
  • 6 Cannot be judged

NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.

Key insight

TerminalFix variant of ClickFix targets Windows Terminal/PowerShell to increase successful execution of multi-line commands and enable direct network access via reverse tunnel.

Description

The TerminalFix campaign is a variant of ClickFix that exploits compromised websites displaying a fake Cloudflare CAPTCHA to trick users into executing malicious PowerShell commands. Unlike classic ClickFix campaigns that direct victims to the Run dialog, TerminalFix targets Windows Terminal, increasing the likelihood of successful multi-line script execution. Upon execution, the malware establishes a reverse tunnel for direct access to the internal network. The campaign has been observed across multiple industries and enables attackers to perform reconnaissance and lateral movement to additional systems.

Risk score

20
cvss base
0.00
kev bonus
0.00
epss bonus
0.00
poc bonus
0.00
raw before weight
0.00
industry weight
1.10
freshness factor
0.50
exploitability factor
1.00
days old
10.00
vendor mismatch penalty
0.00

Path: operational

ESC