SID: 2045808

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_05_20, deployment Perimeter, malware_family Gamaredon, confidence Medium, signature_severity Major, updated_at 2023_05_20

Reference:

  • md5

  • fa1039ec7779e5c1431fa072e7aa85aa

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "OPTIONS"

  • Value: "/USER-" Depth: 6

  • Value: "User-Agent|3a 20|Microsoft Office"

Within:

PCRE: "/X-MSGETWEBURL\x3a\x20[^\r\n]+\r\nX-IDCRL_ACCEPTED\x3a\x20[^\r\n]+\r\n/Hm"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

source