alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Malicious lnk Activity"; flow:established,to_client; file.data; content:"ExpandEnvironmentStrings|28 22 25|Temp|25 5c|MaGiaiNenNe.txt|22 29|"; fast_pattern; reference:url,twitter.com/ShadowChasing1/status/1387602989033017346; reference:md5,57f02fe8fa9d096e5ac9b6c9be66f05b; classtype:trojan-activity; sid:2032891; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_04_29, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_29;)