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Olmarik, also known as TDL4 and Olmasco in referenced variants, is a Windows rootkit family. A modification identified as Win32/Olmarik.AIY was capable of elevating privileges by exploiting the Windows Task Scheduler vulnerability addressed by MS10-092. Olmarik/Olmasco variants incorporating TDL4 and MaxSS modifications were observed in the wild but were reported to have ceased development.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
6 distinct techniques documented for this family, organized by ATT&CK tactic.
Improved disk minport filtering hook ... First kernel mode rootkit compatible with x64 Windows.
Uses payload C&C dll injection (cmd.dll for x86 and cmd64.dll for x64).
24 indicators attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.
File hashes (MD5, SHA-1, SHA-256) from samples and reports.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Mentioned only as background comparison in discussion of declining x64 bootkit activity.
Mentioned as another malware family that later exploited the same Task Scheduler vulnerability discussed in the Stuxnet analysis.
Mentioned as another malware family that later exploited the same Task Scheduler vulnerability discussed in the Stuxnet analysis.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.