Threat Group Cards: A Threat Actor Encyclopedia Archived: 2026-04-05 18:15:54 UTC Home > List all groups > List all tools > List all groups using tool zl4vq.sqt Tool: zl4vq.sqt Names zl4vq.sqt Category Malware Type Compression Description (Kaspersky) legitimate zlib library used by dfrgntfs5.sqt. Information Last change to this tool card: 20 April 2020 Download this tool card in JSON format All groups using tool zl4vq.sqt Changed Name Country Observed APT groups DarkUniverse [Unknown] 2017 1 group listed (1 APT, 0 other, 0 unknown) Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=4466393b-17a8-4fc4-8364-4720983b7880 https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=4466393b-17a8-4fc4-8364-4720983b7880 Page 1 of 1