""ET TROJAN MSIL.L4L Stealer Screenshot Exfiltration""

SID: 2028930

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_10_31, deployment Perimeter, malware_family MSIL_L4L, performance_impact Low, signature_severity Major, updated_at 2019_10_31

Reference:

  • md5

  • 918ffdba1014ec647ae24ddc9de9fde9

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "filename=|22|screenshot_"

  • Value: ".jpeg|22|"

  • Value: "POST"

  • Value: ".php?action=upload&host="

  • Value: "@"

  • Value: !"User-Agent|3a|"

  • Value: !"Referer|3a|"

  • Value: !"Accept"

Within:

PCRE:

Special Options:

  • http_client_body

  • http_client_body

  • http_method

  • http_uri

  • http_uri

  • http_header

  • http_header

  • http_header

source