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Signal

China-linked Storm-1175 actor deploys new StormEncryptor ransomware via N-central vulnerability

Evidence first: scan the strongest sources, then decide whether to go deeper.

Published 2026-08-10 13:15 UTCUpdated 2026-08-11 04:07 UTC
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cveransomwarethreat_actorincident_responsesecurity_tooling
Trend in the last 24h
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Evidence trail (top sources)
top sources (3 domains)domains are deduped. counts indicate coverage, not truth.
3 top sources shown
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Overview

Microsoft has revealed that the China-linked threat actor Storm-1175 has shifted from using Medusa ransomware to a new strain called StormEncryptor. This ransomware, written in C++, appends the .encrypted extension to files.

Entities
MicrosoftN-ableStormEncryptorMedusa
Score total
1.17
Momentum 24h
3
Posts
3
Origins
3
Source types
1
Duplicate ratio
0%
Why now
  • The vulnerability CVE-2026-18577 in N-able's N-central was recently exploited, leading to active ransomware campaigns.
  • Microsoft's recent disclosure highlights ongoing threats from China-linked actors.
  • The emergence of StormEncryptor signals a new phase in ransomware threats leveraging software supply chain weaknesses.
Why it matters
  • Exploitation of a critical vulnerability in widely used cybersecurity software enables ransomware deployment.
  • Storm-1175's shift to a new ransomware strain indicates evolving tactics of China-linked threat actors.
  • Managed service provider tools are increasingly targeted, raising supply chain security concerns.
LLM analysis
Topic mix: lowPromo risk: lowSource quality: medium
Recurring claims
  • Storm-1175, a China-linked threat actor, deployed a new ransomware strain called StormEncryptor.
  • StormEncryptor ransomware is written in C++ and appends the .encrypted file extension.
  • Storm-1175 exploited an authentication-bypass vulnerability (CVE-2026-18577) in N-able's N-central software to gain initial access.
How sources frame it
  • Microsoft Threat Intelligence Team: neutral
All evidence
All evidence
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Top publishers (this list)
  • SC Media (1)
  • thehackernews (1)
  • The Record (Recorded Future News) (1)
Top origin domains (this list)
  • scworld.com (1)
  • thehackernews.com (1)
  • therecord.media (1)