Rule History

alert dcerpc $HOME_NET any -> $HOME_NET any (msg:"ET INFO Suspected Impacket WMIExec Activity"; flow:established,to_server; content:"|3e 00 20 00 5c 00 5c 00 31 00 32 00 37 00 2e 00 30 00 2e 00 30 00 2e 00 31 00 5c 00 41 00 44 00 4d 00 49 00 4e 00 24 00 5c 00 5f 00 5f 00|"; fast_pattern; reference:url,thedfirreport.com/2023/01/09/unwrapping-ursnifs-gifts; reference:url,github.com/fortra/impacket/blob/8799a1a2c42ad74423841d21ed5f4193ea54f3d5/examples/wmiexec.py; classtype:bad-unknown; sid:2043996; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_01_26, deployment Internal, confidence Low, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_26;)