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Untangling KNOTWEED

European private-sector offensive actor using 0-day exploits

The Microsoft Threat Intelligence Center (MSTIC) and the Microsoft Security Response Center (MSRC) found a private-sector offensive actor (PSOA) using multiple Windows and Adobe 0-day exploits, including one for the recently patched CVE-2022-22047, in limited and targeted attacks against European and Central American customers. The PSOA, which MSTIC tracks as KNOTWEED, developed malware called Subzero which was used in these attacks.

Untangling KNOTWEED: European private-sector offensive actor using 0-day exploits - Microsoft Security Blog
MSTIC and MSRC disclose technical details of a private-sector offensive actor (PSOA) tracked as KNOTWEED using multiple Windows and Adobe 0-day exploits, including one for the recently patched CVE-2022-22047, in limited and targeted attacks against European and Central American customers.

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