rule Empire_PowerShell_Framework_Gen5 {
meta:
description = "Detects Empire component"
license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
author = "Florian Roth (Nextron Systems)"
reference = "https://github.com/adaptivethreat/Empire"
date = "2016-11-05"
super_rule = 1
hash1 = "1be3e3ec0e364db0c00fad2c59c7041e23af4dd59c4cc7dc9dcf46ca507cd6c8"
hash2 = "61e5ca9c1e8759a78e2c2764169b425b673b500facaca43a26c69ff7e09f62c4"
hash3 = "eaff29dd0da4ac258d85ecf8b042d73edb01b4db48c68bded2a8b8418dc688b5"
id = "4c23592e-5788-5b84-995a-028142cbc52f"
strings:
$s1 = "if ($ExeArgs -ne $null -and $ExeArgs -ne '')" fullword ascii
$s2 = "$ExeArgs = \"ReflectiveExe $ExeArgs\"" fullword ascii
condition:
( uint16(0) == 0x7566 and filesize < 1000KB and 1 of them ) or all of them
}