""ET TROJAN ELF/Emptiness v1 UDP Flood Command Inbound""
SID: 2027837
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Linux, created_at 2019_08_09, deployment Perimeter, malware_family Emptiness, performance_impact Low, signature_severity Major, tag DDoS, updated_at 2019_08_09
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: any
Destination Network: $HOME_NET
Destination Port: any
Flow: established,from_server
Contents:
- Value: ".udp|20|" Depth: 5
Within:
PCRE: "/^((?:\d{1,3}.){3}\d{1,3}|((?:https?\x3a\/\/)?[a-z0-9-]{1,30}.){1,8}[a-z]{1,8})/Ri"
Special Options:
- fast_pattern