""ET TROJAN Chafer CnC Domain in DNS Lookup""
SID: 2027481
Revision: 2
Class Type: trojan-activity
Metadata: created_at 2019_06_17, deployment Perimeter, performance_impact Low, signature_severity Major, tag Chafer, tag APT39, updated_at 2019_06_17
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: "|0f|nvidia-services|03|com|00|"
Within: 7
PCRE:
Special Options:
-
nocase
-
fast_pattern