INDICATOR_SUSPICIOUS_EXE_Enable_OfficeMacro

YARA detection rule by ditekSHen · NOASSERTION

Detects Windows executables referencing Office macro registry keys. Observed modifying Office configurations via the registy to enable macros

rule INDICATOR_SUSPICIOUS_EXE_Enable_OfficeMacro {
    meta:
        description = "Detects Windows executables referencing Office macro registry keys. Observed modifying Office configurations via the registy to enable macros"
        author = "ditekSHen"
    strings:
        $s1 = "\\Word\\Security\\VBAWarnings" ascii wide
        $s2 = "\\PowerPoint\\Security\\VBAWarnings" ascii wide
        $s3 = "\\Excel\\Security\\VBAWarnings" ascii wide

        $h1 = "5c576f72645c53656375726974795c5642415761726e696e6773" nocase ascii wide
        $h2 = "5c506f776572506f696e745c53656375726974795c5642415761726e696e6773" nocase ascii wide
        $h3 = "5c5c457863656c5c5c53656375726974795c5c5642415761726e696e6773" nocase ascii wide

        $d1 = "5c%57%6f%72%64%5c%53%65%63%75%72%69%74%79%5c%56%42%41%57%61%72%6e%69%6e%67%73" nocase ascii
        $d2 = "5c%50%6f%77%65%72%50%6f%69%6e%74%5c%53%65%63%75%72%69%74%79%5c%56%42%41%57%61%72%6e%69%6e%67%73" nocase ascii
        $d3 = "5c%5c%45%78%63%65%6c%5c%5c%53%65%63%75%72%69%74%79%5c%5c%56%42%41%57%61%72%6e%69%6e%67%73" nocase ascii
    condition:
        uint16(0) == 0x5a4d and (2 of ($s*) or 2 of ($h*) or 2 of ($d*))
}

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

ca7959a8-e9a4-4555-b0d8-45f1af3c4209

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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 ]]

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