Versions (3)
Version DetailsCurrent
Rev: 3 • Mar 28, 2015, 12:00 PMET MALWARE Backdoor family PCRat/Gh0st CnC traffic (OUTBOUND) 67
alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Backdoor family PCRat/Gh0st CnC traffic (OUTBOUND) 67"; flow:established,to_server; stream_size:server,<,5; dsize:>11; content:"|7d 9a|"; offset:8; byte_jump:4,-10,relative,little,from_beginning,post_offset -1; isdataat:!2,relative; pcre:"/^[\x20-\x7e]+?.{8}\x7d\x9a/s"; reference:url,www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=Backdoor%3AWin32/PcClient.ZR&ThreatID=-2147325231; reference:md5,142b8df89b9ae5019c1f1855d2212e9f; classtype:command-and-control; sid:2020768; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_03_28, deployment Perimeter, malware_family Gh0st, malware_family PCRAT, performance_impact Significant, confidence Medium, signature_severity Critical, tag PCRAT, tag Gh0st, tag RAT, updated_at 2021_09_09;)
Mar 28, 2015, 12:00 PM
Sep 9, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-malware.rules