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/*
This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as long as you use it under this license.
*/
rule citadel13xy
{
meta:
author = "Jean-Philippe Teissier / @Jipe_"
description = "Citadel 1.5.x.y trojan banker"
date = "2013-01-12"
version = "1.0"
filetype = "memory"
strings:
$a = "Coded by BRIAN KREBS for personnal use only. I love my job & wife."
$b = "http://%02x%02x%02x%02x%02x%02x%02x%02x.com/%02x%02x%02x%02x/%02x%02x%02x%02x%02x.php"
$c = "%BOTID%"
$d = "%BOTNET%"
$e = "cit_video.module"
$f = "bc_remove"
$g = "bc_add"
$ggurl = "http://www.google.com/webhp"
condition:
3 of them
}
rule Citadel_Malware
{
meta:
author = "xylitol@temari.fr"
date = "2015-10-08"
description = "Search for nss3.dll pattern indicating an hexed copy of Citadel malware to work on firefox > v23.0"
// May only the challenge guide you
strings:
$s1 = "Coded by BRIAN KREBS for personal use only. I love my job & wife" wide ascii
$s2 = "nss3.dll" wide ascii
$h1 = {8B C7 EB F5 55 8B EC}
$h2 = {55 8B EC 83 EC 0C 8A 82 00 01 00 00}
$h3 = {3D D0 FF 1F 03 77 ?? 83 7D}
$h4 = {83 F9 66 74 ?? 83 F9 6E 74 ?? 83 F9 76 74 ?? 83 F9 7A}
condition:
all of ($s*) and 2 of ($h*)
}