""ET TROJAN Possible 3CX Supply Chain Attack (2023-03-29) Domain Indiciator in DNS Lookup (msedgepackageinfo .com)""
SID: 2044804
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2023_03_29, deployment Perimeter, performance_impact Low, signature_severity Critical, updated_at 2023_03_29
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: "|11|msedgepackageinfo|03|com|00|"
Within: 7
PCRE:
Special Options:
-
nocase
-
fast_pattern