""ET TROJAN Innostealer Domain in DNS Lookup (windows11-upgrade .com)""
SID: 2036363
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2022_04_25, deployment Perimeter, malware_family Innostealer, performance_impact Low, signature_severity Major, updated_at 2022_04_25
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: "windows11-upgrade"
-
Value: "|03|com|00|"
Within: 7
PCRE: "/[0-9]{1,2}/R"
Special Options:
- fast_pattern