CuboidalCanine, tracked as Expel-TA-0003, is a Chinese cybercrime subgroup within GoldenEyeDog. It is associated with ValleyRAT (also known as WinOS and SilverFox) operations targeting the gambling industry. CuboidalCanine distributes malware through watering-hole attacks and has abused code-signing certificates to evade security controls. Its attribution is based on the combination of lures, delivery-chain characteristics, and certificate use rather than ValleyRAT alone, which has been publicly available and used by multiple actors. CuboidalCanine appears operationally distinct from GoldenEyeDog’s CylindricalCanine subgroup, which principally uses Golden Gh0st RAT and Loader against corporate targets; the subgroups generally maintain separate certificate inventories but exhibit limited overlap consistent with access to a common certificate source.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Attributed origin per open-source reporting.
3 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
2 malware families attributed to this actor across reporting.
6 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A GoldenEyeDog subgroup associated with ValleyRAT distribution against the gambling industry, using watering-hole compromises and abused code-signing certificates to evade security controls.
A GoldenEyeDog subgroup that favors ValleyRAT, targets the gambling industry, and distributes malware through watering hole sites. It maintains largely separate code-signing certificate usage from CylindricalCanine while sharing broader GoldenEyeDog tradecraft.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.