""ET TROJAN RShell CnC Domain (time .ntp-server .asia) in DNS Lookup""
SID: 2038538
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_and_Server, created_at 2022_08_16, deployment Perimeter, malware_family Rshell, performance_impact Low, signature_severity Major, updated_at 2022_08_16
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: "|04|time|0a|ntp-server|04|asia|00|"
Within: 22
PCRE:
Special Options:
-
nocase
-
fast_pattern