Maldoc_VBA_macro_code.yar

/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/


rule Contains_VBA_macro_code
{
	meta:
		author = "evild3ad"
		description = "Detect a MS Office document with embedded VBA macro code"
		date = "2016-01-09"
		filetype = "Office documents"

	strings:
		$officemagic = { D0 CF 11 E0 A1 B1 1A E1 }
		$zipmagic = "PK"

		$97str1 = "_VBA_PROJECT_CUR" wide
		$97str2 = "VBAProject"
		$97str3 = { 41 74 74 72 69 62 75 74 00 65 20 56 42 5F } // Attribute VB_

		$xmlstr1 = "vbaProject.bin"
		$xmlstr2 = "vbaData.xml"

	condition:
		($officemagic at 0 and any of ($97str*)) or ($zipmagic at 0 and any of ($xmlstr*))
}