""ET TROJAN Observed DNS Query to Ursnif Domain (mamount .cyou)""
SID: 2039628
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2022_11_02, deployment Perimeter, malware_family ursnif, signature_severity Major, updated_at 2022_11_02, reviewed_at 2023_10_05
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: "|07|mamount|04|cyou|00|"
Within: 14
PCRE:
Special Options:
-
nocase
-
fast_pattern