Hi,

Below signature is for the RATs C&C. Not much luck with the droppers. Pcap is available for this one.

# --------------------
# Date: 2018-06-01
# Title: Lazarus Group Droppers / RATs
# Tests: pcap
# Reference: https://twitter.com/DrunkBinary/status/1002587521073721346
#     Droppers:
#         - 9f2d4fd79d3c68270102c4c11f3e968c10610a2106cbf1298827f8efccdd70a9
#         - 086a50476f5ceee4b10871c1a8b0a794e96a337966382248a8289598b732bd47
#     RATs:
#         - c10363059c57c52501c01f85e3bb43533ccc639f0ea57f43bae5736a8e7a9bc8
#         - e98991cdd9ddd30adf490673c67a4f8241993f26810da09b52d8748c6160a292

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MALWARE-CNC Win.Trojan.Autophyte RAT outbound connection"; flow:to_server,established; content:"POST"; http_method; content:"Content-Disposition: form-data|3B| name=|22|board_id|22|"; fast_pattern:only; http_client_body; content:"Content-Disposition: form-data|3B| name=|22|user_id|22|"; http_client_body; content:"Content-Disposition: form-data|3B| name=|22|file1|22|"; http_client_body; content:"Cache-Control"; http_header; content:!"Referer"; http_header; metadata:ruleset community, service http; reference:url,www.virustotal.com/#/file/e98991cdd9ddd30adf490673c67a4f8241993f26810da09b52d8748c6160a292/detection; reference:url,www.virustotal.com/#/file/c10363059c57c52501c01f85e3bb43533ccc639f0ea57f43bae5736a8e7a9bc8/detection; classtype:trojan-activity; sid:8000101; rev:1;)


Thanks.
YM