Threat Group Cards: A Threat Actor Encyclopedia Archived: 2026-04-05 22:19:56 UTC Home > List all groups > List all tools > List all groups using tool SHARPEXT Tool: SHARPEXT Names SHARPEXT Category Malware Type Backdoor, Info stealer, Exfiltration Description (Volexity) SHARPEXT is a malicious browser extension deployed by SharpTongue following successful compromise of a target system. In the first versions of SHARPEXT investigated by Volexity, the malware only supported Google Chrome. The latest version (3.0 based on the internal versioning) supports three browsers. Information Last change to this tool card: 12 September 2022 Download this tool card in JSON format All groups using tool SHARPEXT Changed Name Country Observed APT groups Kimsuky, Velvet Chollima 2012-Aug 2025 1 group listed (1 APT, 0 other, 0 unknown) Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=a513cdce-3e92-47f9-80f4-bf955cb3a5da https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=a513cdce-3e92-47f9-80f4-bf955cb3a5da Page 1 of 1