Sneed-Reactivity/yara-Neo23x0/vul_cve_2021_3438_printdriver.yar
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2024-07-25 12:43:35 -05:00

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Text

import "pe"
rule VULN_PrinterDriver_PrivEsc_CVE_2021_3438_Jul21 {
meta:
description = "Detects affected drivers with PE timestamps older than the date of the initial report"
author = "Florian Roth (Nextron Systems)"
reference = "https://labs.sentinelone.com/cve-2021-3438-16-years-in-hiding-millions-of-printers-worldwide-vulnerable/"
date = "2021-07-20"
score = 70
hash1 = "7cc9ba2df7b9ea6bb17ee342898edd7f54703b93b6ded6a819e83a7ee9f938b4"
id = "34cd648a-3e3f-5832-8abe-18507931eb3d"
strings:
$s1 = "This String is from Device Driver@@@@@ !!!" ascii
$s2 = "\\DosDevices\\ssportc" wide fullword
condition:
uint16(0) == 0x5a4d
and filesize < 400KB
and all of ($s*)
/* date of the initial report by SentinelOne */
and 1613606400 >= pe.timestamp
}