""ET TROJAN BrushaLoader CnC DNS Lookup""
SID: 2026952
Revision: 2
Class Type: trojan-activity
Metadata: created_at 2019_02_21, deployment Perimeter, malware_family BrushaLoader, performance_impact Low, signature_severity Major, updated_at 2019_02_21
Reference:
Protocol: udp
Source Network: $HOME_NET
Source Port: any
Destination Network: any
Destination Port: 53
Flow:
Contents:
-
Value: "|01|" Depth: 1 Offset: 2
-
Value: "|00 01 00 00 00 00 00|"
-
Value: "faxpctodaymessage"
Within: 7
PCRE: "/^(?:\x05(?:press|space)|\x07website)/R"
Special Options:
-
fast_pattern
-
nocase