alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Donot (APT-C-35) Stage 1 Requesting Persistence Setup File";
flow:established,to_server;
urilen:10;
http.method;
content:"GET";
http.uri;
content:"/pushBatch"; fast_pattern;
http.accept;
content:"*/*"; depth:3; endswith;
http.accept_enc;
content:"gzip,|20|deflate"; depth:13; endswith;
http.connection;
content:"Keep-Alive";
http.header_names;
content:"User-Agent";
content:!"Referer";
content:!"Cache";
reference:url,ti.360.net/blog/articles/donot-group-is-targeting-pakistani-businessman-working-in-china-en/;
classtype:targeted-activity;
sid:2026728; rev:3;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_12_14, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Donot, tag APT_C_35, updated_at 2020_09_16;
)