Cybersecurity researchers have flagged a cyber espionage campaign targeting Myanmar that uses graduation ceremony invitation lures to deliver a Go backdoor called QUICAgent.

The campaign, codenamed Operation QUICSILVER, has been found to target government and information technology sectors, per Seqrite Labs. The activity is assessed to be the work of a China-nexus threat actor with moderate confidence.

It was first observed in April 2026, when the attack was observed delivering a file named “HolidayNotice.pdf.exe” along with a lure that was a fabricated Belgian–Myanmar public holiday calendar. Two subsequent artifacts, each detected in June and July 2026, make use of a Virtual Hard Disk (VHD) file that activates the infection chain.