/*
Yara Rule Set
Author: Brian Laskowski
Date: 2019-03-16
Identifier: 03-16-19
Reference: https://github.com/Hestat/lw-yara/
*/
/* Rule Set ----------------------------------------------------------------- */
rule infected_03_16_19_memoris {
meta:
description = "03-16-19 - file memoris.php"
author = "Brian Laskowski"
reference = "https://github.com/Hestat/lw-yara/"
date = "2019-03-16"
hash1 = "23535566bbbf822d7b4afa57b527ad6b406ccb9bf69329dd5f00bbbde8c6335a"
strings:
$s1 = "$MessageSubject = base64_decode($_POST[\"msgsubject\"]);" fullword ascii
$s2 = "$MessageHeader = base64_decode($_POST[\"msgheader\"]);" fullword ascii
$s3 = "$MessageBody = base64_decode($_POST[\"msgbody\"]);" fullword ascii
$s4 = "$MailTo = base64_decode($_POST[\"mailto\"]);" fullword ascii
$s5 = "if(mail($MailTo,$MessageSubject,$MessageBody,$MessageHeader))" fullword ascii
$s6 = "if(isset($_POST[\"msgheader\"]))" fullword ascii
$s7 = "if(isset($_POST[\"msgsubject\"]))" fullword ascii
$s8 = "if(isset($_POST[\"mailto\"]))" fullword ascii
$s9 = "if(isset($_POST[\"msgbody\"]))" fullword ascii
condition:
( uint16(0) == 0x3f3c and
filesize < 1KB and
( all of them )
) or ( all of them )
}
Copyright 2K16 - 2K18 Indonesian Hacker Rulez