""ET TROJAN Suspected REDCURL CnC Activity M1""

SID: 2030697

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2020_08_17, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, performance_impact Moderate, signature_severity Major, updated_at 2020_08_17

Reference:

• md5

• 9691daebab79c6ab48adac73bda0a84a

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "PROPFIND"

• Value: "|0d 0a|Depth|3a 20|0|0d 0a|translate|3a 20|"

• Value: !"Referer"

• Value: !"Accept"

Within:

PCRE: "/^Connection[^\r\n]+\r\nUser-Agent[^\r\n]+\r\nDepth[^\r\n]+\r\ntranslate[^\r\n]+\r\nContent-Length[^\r\n]+\r\nHost[^\r\n]+\r\n(?:\r\n)?$/H"

Special Options:

• http_method

• fast_pattern

• http_header

• http_header

• http_header

source