apt_nobelium_html_smuggling_iso

YARA detection rule by HydraDragonAntivirus · GPL-2.0

Detect HTML smuggling with ISO

rule apt_nobelium_html_smuggling_iso {
  meta:
    id                = "9bd5b626-8ea3-4607-a858-58deff18396c"
    version           = "1.0"
    description       = "Detect HTML smuggling with ISO"
    hash              = "b87073c34a910f20a83c04c8efbd4f43"
    hash              = "3d18bc4bfe1ec7b6b73a3fb39d490b64"
    source            = "SEKOIA"
    creation_date     = "2022-01-02"
    modification_date = "2022-01-02"
    classification    = "TLP:WHITE"

  strings:
    $ = "new Blob"
    $ = ".click();"
    $ = {
      28 [1-20] 2c 22 [1-20]
      2e 69 73 6f 22 2c 22 61
      70 70 6c 69 63 61 74 69
      6f 6e 2f 78 2d 63 64 2d
      69 6d 61 67 65 22 29
    }

  condition:
    filesize > 1MB and filesize < 2MB and all of them
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

08cb497f-ddcc-4025-8a36-eb32d4b7b90d

Propose edits, view related rules, and engage with the community through comments.

Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

Community Discussion