signature-base/yara/gen_susp_office_dropper.yar
2018-09-14 00:24:44 +02:00

17 lines
567 B
Plaintext

rule SUSP_Office_Dropper_Strings {
meta:
description = "Detects Office droppers that include a notice to enable active content"
author = "Florian Roth"
reference = "Internal Research"
date = "2018-09-13"
strings:
$a1 = "_VBA_PROJECT" fullword wide
$s1 = "click enable editing" fullword ascii
$s2 = "click enable content" fullword ascii
$s3 = "\"Enable Editing\"" fullword ascii
$s4 = "\"Enable Content\"" fullword ascii
condition:
uint16(0) == 0xcfd0 and filesize < 500KB and $a1 and 1 of ($s*)
}