signature-base/yara/apt_fancybear_osxagent.yar

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rule MAL_OSX_FancyBear_Agent_Jul18_1 {
meta:
description = "Detects FancyBear Agent for OSX"
license = "https://creativecommons.org/licenses/by-nc/4.0/"
author = "Florian Roth"
reference = "https://twitter.com/DrunkBinary/status/1018448895054098432"
date = "2018-07-15"
hash1 = "d3be93f6ce59b522ff951cef9d59ef347081ffe33d4203cd5b5df0aaa9721aa2"
strings:
$x1 = "/Users/kazak/Desktop/" ascii
$s1 = "launchctl load -w ~/Library/LaunchAgents/com.apple.updates.plist" fullword ascii
$s2 = "mkdir -p /Users/Shared/.local/ &> /dev/null" fullword ascii
$s3 = "chmod 755 /Users/Shared/start.sh" fullword ascii
$s4 = "chmod 755 %s/%s &> /dev/null" fullword ascii
$s6 = "chmod 755 /Users/Shared/.local/kextd" fullword ascii
condition:
uint16(0) == 0xfacf and filesize < 3000KB and ( 1 of ($x*) and 4 of them )
}