Threat Group Cards: A Threat Actor Encyclopedia Archived: 2026-04-05 21:51:47 UTC Home > List all groups > List all tools > List all groups using tool PORTHOLE Tool: PORTHOLE Names PORTHOLE Category Malware Type Reconnaissance Description (Mandiant) FIN13 used PORTHOLE, a Java-based port scanner, to conduct network research. PORTHOLE may attempt multiple socket connections to many IPs and ports and, as it is multi-threaded, can execute this operation rapidly with potentially multiple overlapping connections. The malware accepts as its first argument either an IP address with wildcards in the address, or a filename. The second argument is the starting port range to scan for each IP, and the third is the ending port range. Information Last change to this tool card: 26 December 2021 Download this tool card in JSON format All groups using tool PORTHOLE Changed Name Country Observed APT groups   FIN13 [Unknown] 2016   1 group listed (1 APT, 0 other, 0 unknown) Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=c840fb35-74e8-4953-a1a5-58b7607053bf https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=c840fb35-74e8-4953-a1a5-58b7607053bf Page 1 of 1