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Commit 7f805a3a by Jaume Martin Committed by GitHub
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Removing some false positives

parent 2b85939f
Showing with 10 additions and 14 deletions
malware/RANSOM_Telefonica.yar
import "pe"
rule ransom_telefonica : TELEF rule ransom_telefonica : TELEF
{ {
meta: meta:
author = "Joan Bono <@joan_bono>" author = "Jaume Martin <@Xumeiquer>"
description = "Ransmoware Telefonica. WannaCry variant" description = "Ransmoware Telefonica"
date = "2017-05-12" date = "2017-05-13"
reference = "http://www.elmundo.es/tecnologia/2017/05/12/59158a8ce5fdea194f8b4616.html" reference = "http://www.elmundo.es/tecnologia/2017/05/12/59158a8ce5fdea194f8b4616.html"
md5 = "7f7ccaa16fb15eb1c7399d422f8363e8" md5 = "7f7ccaa16fb15eb1c7399d422f8363e8"
sha256 = "2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd" sha256 = "2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd"
strings: strings:
$a = "115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn" wide ascii nocase $a = "RegCreateKeyW" wide ascii nocase
$b = "12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw" wide ascii nocase $b = "cmd.exe /c"
$c = "13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94" wide ascii nocase $c = "115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn" ascii
$d = "tasksche.exe" $d = "12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw" ascii
$e = "RegCreateKeyW" wide ascii nocase $e = "13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94" ascii
$f = "cmd.exe /c" $f = "tasksche.exe"
condition: condition:
pe.characteristics and uint16(0) == 0x5A4D and $a and for all of ($b, $c, $d, $e, $f) : (@ > @a)
for any of ($a, $b, $c, $d, $e, $f): (@ > @a)
} }
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