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Re: Retrospective by 'gpg.fail' authors

GnuPG maintainer Werner Koch responds on oss-security to a gpg.fail retrospective covering 2003-era GnuPG code.

On oss-security, GnuPG lead developer Werner Koch replied to a retrospective published by the gpg.fail authors, citing a December 2003 commit in GnuPG's gettime.c affecting asctimestamp and printf format attributes in util.h. The excerpt contains no new CVE identifiers or exploitation evidence, and appears to revisit long-standing historical GnuPG code paths discussed by the retrospective's authors.

oss-securityupdated 03:19 UTC · 8h agofirst Sep 16, 15:11 UTC · 20h agoResearch 9 sources

How Attackers Abuse VSS, and How Huntress Detects It

Huntress details how attackers abuse Windows Volume Shadow Copies for ransomware recovery sabotage and NTDS.dit credential theft, plus detection logic.

Huntress explains that attackers abuse VSS in three ways: deleting shadow copies to inhibit recovery before ransomware detonation, creating shadow copies to extract the NTDS.dit Active Directory database for offline credential theft, and manipulating shadow copy configuration. Because backup agents and RMM tools routinely create and delete shadow copies, raw events are too noisy to alert on alone. Huntress detections instead correlate VSS activity with lateral movement and credential harvesting over a time window, such as an observed sequence of PsExec spawning SYSTEM shells on a domain controller, vssadmin create shadow, a blocked deletion attempt, and DNS reconnaissance against another host.

HuntressSep 14, 13:00 UTC · 2d agoResearch