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GrayFish is a sophisticated Windows cyberespionage platform associated with the Equation Group and developed as a successor to EquationDrug. It was deployed to new victims while the older EquationDrug platform remained in use. GrayFish resides in the Windows registry and relies on a bootkit to gain execution during operating-system startup, providing persistence while minimizing conventional on-disk payload artifacts. It also abuses vulnerable legitimate drivers to obtain kernel-mode execution, a bring-your-own-vulnerable-driver technique that supports privileged execution and defense evasion. GrayFish forms part of the Equation Group's broader espionage arsenal, alongside EquationLaser, DoubleFantasy, TripleFantasy, and Fanny.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
Other malware, such as Turla, Equation’s Grayfish platform and White Lambert.
1 distinct technique documented for this family, organized by ATT&CK tactic.
2 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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Equation group implant named as part of the group's malware arsenal.
Mentioned as another malware/tool that used a similar signed-driver abuse method to load code in kernel mode.
Known Equation Group malware/platform referenced as part of prior toolsets whose cryptographic implementation was compared with the ShadowBrokers leak.
A more modern espionage platform referenced as the successor being deployed to new victims in place of EquationDrug.
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.