alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Possible CryptoLocker TorComponent DL"; flow:established,to_client; flowbits:isset,FakeIEMinimal; file.data; byte_extract:1,0,size,relative; content:"|00 00 00|"; within:3; content:!"|00|"; within:size; content:"|00|"; distance:size; within:1; pcre:"/^.\x00\x00\x00[a-z0-9]+?\x00/s"; reference:url,malware-traffic-analysis.net/2014/10/01/index.html; classtype:trojan-activity; sid:2019345; rev:4; metadata:created_at 2014_10_03, deprecation_reason Relevance, confidence Medium, signature_severity Major, updated_at 2024_04_08;)