""ET INFO Likely Hex Encoded Executable as String - Percent Separated""
SID: 2044373
Revision: 1
Class Type: bad-unknown
Metadata: attack_target Client_Endpoint, created_at 2023_02_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_02_28, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "4D|25|5A|25|"
-
Value: "|25|50|25|45|25|00|25|00|25|"
-
Value: "|25|21|25|54|25|68|25|69|25|73|25|20|25|70|25|72|25|6f|25|67|25|72|25|61|25|6d|25|"
Within:
PCRE:
Special Options:
-
file_data
-
nocase
-
nocase
-
fast_pattern