""ET TROJAN Known Malicious Server in DNS Lookup (updatecache .com)""
SID: 2027678
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_07_04, deployment Perimeter, signature_severity Major, updated_at 2019_07_04
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: "|0b|updatecache|03|com|00|"
Within: 7
PCRE:
Special Options:
- fast_pattern