rule win_polyvice_w0 {
  meta:
    author = "Antonio Cocomazzi @ SentinelOne"
    description = "Detect a custom branded version of Vice Society ransomware"
    date = "2022-11-28"
    reference = "https://www.sentinelone.com/labs/custom-branded-ransomware-the-vice-society-group-and-the-threat-of-outsourced-development"
    hash = "c8e7ecbbe78a26bea813eeed6801a0ac9d1eacac"
    malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.polyvice"
    malpedia_rule_date = "20230102"
    malpedia_hash = ""
    malpedia_version = "20230102"
    malpedia_license = "CC BY-NC-SA 4.0"
    malpedia_sharing = "TLP:WHITE"
  strings:
    $code1 = {4? 8B ?? 28 00 02 00 }
    $code2 = {4? C7 ?? 18 03 02 00 A3 00 00 00}
    $code3 = {(48|49) 8D 8? 58 00 02 00}
    $code4 = {(48|49) 8D 9? E8 02 02 00}
    $code5 = {(48|4C) 89 ?? 24 38}
    $code6 = {4? 8B ?? F8 02 02 00}
    $code7 = {C7 44 24 48 01 00 00 00}
    $string1 = "vsociet" nocase wide ascii
 
  condition:
    uint16(0) == 0x5A4D and all of them
}