rule OpCloudHopper_Dropper_1 {
meta:
description = "Detects malware from Operation Cloud Hopper"
license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
author = "Florian Roth (Nextron Systems)"
reference = "https://www.pwc.co.uk/issues/cyber-security-data-privacy/insights/operation-cloud-hopper.html"
date = "2017-04-03"
hash1 = "411571368804578826b8f24f323617f51b068809b1c769291b21125860dc3f4e"
id = "b43ffb7e-1643-5560-8719-9c63582920e7"
strings:
$s1 = "{\\version2}{\\edmins0}{\\nofpages1}{\\nofwords11}{\\nofchars69}{\\*\\company google}{\\nofcharsws79}{\\vern24611}{\\*\\password" ascii
condition:
( uint16(0) == 0x5c7b and filesize < 700KB and all of them )
}