Win_Hook

YARA detection rule by x0r

Affect hook table

rule Win_Hook
{
    meta:
        author = "x0r"
        description = "Affect hook table"
    strings:
        $f1 = "user32.dll" nocase
        $c1 = "UnhookWindowsHookEx"
        $c2 = "SetWindowsHookExA"
        $c3 = "CallNextHookEx"
    condition:
        $f1 and 1 of ($c*)
}

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

0df898d9-739a-47cf-b97c-d99d3d2b3856

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