Ransomware threat actors tracked as Velvet Tempest are using the ClickFix technique and legitimate Windows utilities to deploy the DonutLoader malware and the CastleRAT backdoor.
Huntress researchers uncover campaign exploiting vulnerabilities to steal data using Elastic Cloud as a data hub ...
IntroductionIn December 2025, Zscaler ThreatLabz discovered a campaign linked to APT37 (also known as ScarCruft, Ruby Sleet, and Velvet Chollima), which is a DPRK-backed threat group. In this campaign ...
North Korean hacking group APT37 was seen deploying new implants, backdoors, and other tools in attacks targeting air-gapped ...
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The security researchers from Zscaler ThreatLabz have also discovered five new tools deployed by the North Korean hacking ...
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Signed malware backed by a stolen EV certificate deployed legitimate RMM tools to gain persistent access inside enterprise ...
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Microsoft has released Windows 11 KB5079473 and KB5078883 cumulative updates for versions 25H2/24H2 and 23H2 to fix security ...