""ET SHELLCODE Unescape Variable Unicode Shellcode""

SID: 2012535

Revision: 2

Class Type: shellcode-detect

Metadata: created_at 2011_03_22, performance_impact Significant, updated_at 2024_04_09

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "= unescape|28|"

  • Value: "|5C|u"

  • Value: "|5C|u"

Within: 6

PCRE: "/var\x20[a-z,0-9]{1,30}\x20\x3D\x20unescape\x28.\x5Cu[a-f,0-9]{2,4}\x5Cu[a-f,0-9]{2,4}/i"

Special Options:

  • nocase

  • nocase

  • nocase

source