signature-base/yara/apt_ta459.yar

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/*
Yara Rule Set
Author: Florian Roth
Date: 2017-05-31
Identifier: TA 459 - April 2017
Reference: https://goo.gl/RLf9qU
*/
/* Rule Set ----------------------------------------------------------------- */
rule TA459_Malware_May17_1 {
meta:
description = "Detects TA459 related malware"
license = "https://creativecommons.org/licenses/by-nc/4.0/"
author = "Florian Roth"
reference = "https://goo.gl/RLf9qU"
date = "2017-05-31"
hash1 = "5fd61793d498a395861fa263e4438183a3c4e6f1e4f098ac6e97c9d0911327bf"
strings:
$s3 = "xtsewy" fullword ascii
$s6 = "CW&mhAklnfVULL" ascii
condition:
( uint16(0) == 0x6152 and filesize < 800KB and all of them )
}
rule TA459_Malware_May17_2 {
meta:
description = "Detects TA459 related malware"
license = "https://creativecommons.org/licenses/by-nc/4.0/"
author = "Florian Roth"
reference = "https://goo.gl/RLf9qU"
date = "2017-05-31"
hash1 = "4601133e94c4bc74916a9d96a5bc27cc3125cdc0be7225b2c7d4047f8506b3aa"
strings:
$a1 = "Mcutil.dll" fullword ascii
$a2 = "mcut.exe" fullword ascii
$s1 = "Software\\WinRAR SFX" fullword ascii
$s2 = "AYou may need to run this self-extracting archive as administrator" fullword wide
condition:
( uint16(0) == 0x5a4d and filesize < 900KB and all of ($a*) and 1 of ($s*) )
}