signature-base/yara/crime_wsh_rat.yar
2021-03-25 14:16:31 +01:00

16 lines
664 B
Plaintext

rule MAL_WshRAT_Dotnet_Packer_Feb21 {
meta:
description = "Yara Rule for WSH rat .NET packer of February 2021 "
author = "Yoroi Malware ZLab"
date = "2021-03-09"
reference = "https://yoroi.company/research/threatening-within-budget-how-wsh-rat-is-abused-by-cyber-crooks/"
strings:
$a1 = { BE DD 60 8C 34 49 9A 54 D2 40 }
$a2 = { 1D D7 24 22 47 A6 B1 A5 }
$a3 = { 13 30 03 00 07 00 00 00 01 }
$a4 = { 11 02 03 7D 78 00 00 04 2A }
$a5 = { A8 8A F4 C8 61 2B CA 07 }
$a6 = { 15 AE 5E AB 5A 20 FE B5 56 B4 61 2B BB 06 2A}
condition:
uint16(0) == 0x5A4D and 3 of them
}