""ET TROJAN Observed Cobalt Strike CnC Domain in DNS Lookup (nirsoft .me)""
SID: 2035469
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2022_03_16, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2022_03_16
Reference:
-
md5
-
aa5e8268e741346c76ebfd1f27941a14
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|nirsoft|02|me|00|"
Within: 12
PCRE:
Special Options:
-
nocase
-
fast_pattern