APT / THREAT GROUP
GammDrop
2
aliases
Last seen:Jun 21, 2026
Intelligence Profile
According to HarfangLab, GammaDrop is a VBScript-based downloader that forms the first stage of a two-stage infection chain. It uses obfuscated VBScript stored in a stealthy data stream to fetch a second-stage HTA payload (GammaLoad) and execute it, achieving persistence via the Startup folder.
Threat Analysis
GammDrop is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.
External References
Quick Facts
TypeAPT / Threat Group
Aliases2
Also Known As
vbs.gammadropGammDrop
External Intelligence
Malpedia: vbs.gammadropResearch Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.