""ET TROJAN TA577 Style Response (2023-05-15)""
SID: 2048222
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_and_Server, created_at 2023_09_25, deployment Perimeter, deployment SSLDecrypt, performance_impact Moderate, confidence High, signature_severity Major, tag TA577, updated_at 2023_09_25, reviewed_at 2023_09_25
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "200"
-
Value: "content-description"
-
Value: "|3a 20|File Transfer|0d 0a|"
-
Value: "content-disposition|3a 20|"
-
Value: "attachment|3b 20|filename|3d|"
-
Value: "cache-control|3a 20|"
-
Value: "must|2d|revalidate|2c 20|post|2d|check|3d|0|2c 20|pre|2d|check|3d|0"
-
Value: "content-transfer-encoding|3a 20|"
-
Value: "binary|0d 0a|"
-
Value: "expires|3a 20|0|0d 0a|"
-
Value: "content-type"
-
Value: "|3a 20|application/octet-stream|0d 0a|"
Within: 28
PCRE:
Special Options:
-
http_stat_code
-
http_header
-
nocase
-
http_header
-
fast_pattern
-
http_header
-
nocase
-
http_header
-
http_header
-
nocase
-
http_header
-
http_header
-
nocase
-
http_header
-
http_header
-
nocase
-
nocase
-
http_header