signature-base/yara/gen_powershell_obfuscation.yar
2017-06-23 11:29:56 +02:00

25 lines
684 B
Plaintext

/*
Yara Rule Set
Author: Florian Roth
Date: 2017-06-22
Identifier: ISESteroids
Reference: https://twitter.com/danielhbohannon/status/877953970437844993
*/
/* Rule Set ----------------------------------------------------------------- */
rule PowerShell_ISESteroids_Obfuscation {
meta:
description = "Detects PowerShell ISESteroids obfuscation"
author = "Florian Roth"
reference = "https://twitter.com/danielhbohannon/status/877953970437844993"
date = "2017-06-23"
strings:
$x1 = "/\\/===\\__" ascii
$x2 = "${__/\\/==" ascii
$x3 = "Catch { }" fullword ascii
$x4 = "\\_/=} ${_" ascii
condition:
2 of them
}