Flaw was patched this week and affects all Windows versions.
Ukrainian organizations have been subjected to suspected Russian cyber-attacks involving the newly-fixed Windows NTLM Hash Disclosure spoofing flaw.
With attacks tracked since June, analysis by researcher from ClearSky said the attacks began with the delivery of phishing emails with a URL file, which exploits the vulnerability to facilitate installation of additional payloads, including the open-source trojan SparkRAT.
The flaw, tracked as CVE-2024-43451, affects all supported Windows versions, including Windows 10 or later and Windows Server 2008. Microsoft patched the vulnerability as part of the November 2024 Patch Tuesday and confirmed ClearSky's findings, saying that user interaction is required for successful exploitation.
Written by
Dan Raywood
Senior Editor
SC Media UK
Dan Raywood is a B2B journalist with more than 20 years of experience, including covering cybersecurity for the past 16 years. He has extensively covered topics from Advanced Persistent Threats and nation-state hackers to major data breaches and regulatory changes.
He has spoken at events including 44CON, Infosecurity Europe, RANT Conference, BSides Scotland, Steelcon and ESET Security Days.
Outside work, Dan enjoys supporting Tottenham Hotspur, managing mischievous cats, and sampling craft beers.
