signature-base/yara/gen_b374k_extra.yar

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/*
Yara Rule Set
Author: Florian Roth
Date: 2016-08-18
Identifier: b374k - Back Connect Payload UPX
*/
rule b374k_back_connect {
meta:
description = "Detects privilege escalation tool"
license = "https://creativecommons.org/licenses/by-nc/4.0/"
author = "Florian Roth"
reference = "Internal Analysis"
date = "2016-08-18"
score = 80
hash1 = "c8e16f71f90bbaaef27ccaabb226b43762ca6f7e34d7d5585ae0eb2d36a4bae5"
strings:
$s1 = "AddAtomACreatePro" fullword ascii
$s2 = "shutdow" fullword ascii
$s3 = "/config/i386" fullword ascii
condition:
( uint16(0) == 0x5a4d and filesize < 10KB and all of them )
}