rule win_targetcompany_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.targetcompany."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.targetcompany"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 8955c4 e8???????? 6a00 6a02 52 50 }
            // n = 6, score = 500
            //   8955c4               | mov                 dword ptr [ebp - 0x3c], edx
            //   e8????????           |                     
            //   6a00                 | push                0
            //   6a02                 | push                2
            //   52                   | push                edx
            //   50                   | push                eax

        $sequence_1 = { 8d7004 8bca 895df8 895dec b8fc030000 }
            // n = 5, score = 500
            //   8d7004               | lea                 esi, [eax + 4]
            //   8bca                 | mov                 ecx, edx
            //   895df8               | mov                 dword ptr [ebp - 8], ebx
            //   895dec               | mov                 dword ptr [ebp - 0x14], ebx
            //   b8fc030000           | mov                 eax, 0x3fc

        $sequence_2 = { 8bf9 c1ef02 33d7 03c2 03ce 8bfe c1e708 }
            // n = 7, score = 500
            //   8bf9                 | mov                 edi, ecx
            //   c1ef02               | shr                 edi, 2
            //   33d7                 | xor                 edx, edi
            //   03c2                 | add                 eax, edx
            //   03ce                 | add                 ecx, esi
            //   8bfe                 | mov                 edi, esi
            //   c1e708               | shl                 edi, 8

        $sequence_3 = { 50 53 ffb5a0fdffff ff15???????? 898594fdffff 83f8ff 0f8421020000 }
            // n = 7, score = 500
            //   50                   | push                eax
            //   53                   | push                ebx
            //   ffb5a0fdffff         | push                dword ptr [ebp - 0x260]
            //   ff15????????         |                     
            //   898594fdffff         | mov                 dword ptr [ebp - 0x26c], eax
            //   83f8ff               | cmp                 eax, -1
            //   0f8421020000         | je                  0x227

        $sequence_4 = { e8???????? 8bc6 5d c20400 6a00 6a01 }
            // n = 6, score = 500
            //   e8????????           |                     
            //   8bc6                 | mov                 eax, esi
            //   5d                   | pop                 ebp
            //   c20400               | ret                 4
            //   6a00                 | push                0
            //   6a01                 | push                1

        $sequence_5 = { 03d8 c1e008 33d8 8b45fc 03d3 0155fc 895df8 }
            // n = 7, score = 500
            //   03d8                 | add                 ebx, eax
            //   c1e008               | shl                 eax, 8
            //   33d8                 | xor                 ebx, eax
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   03d3                 | add                 edx, ebx
            //   0155fc               | add                 dword ptr [ebp - 4], edx
            //   895df8               | mov                 dword ptr [ebp - 8], ebx

        $sequence_6 = { 56 57 33ff 8945e8 393d???????? 0f8584000000 68???????? }
            // n = 7, score = 500
            //   56                   | push                esi
            //   57                   | push                edi
            //   33ff                 | xor                 edi, edi
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax
            //   393d????????         |                     
            //   0f8584000000         | jne                 0x8a
            //   68????????           |                     

        $sequence_7 = { 59 8db534feffff f3a5 8b7d14 6a14 59 }
            // n = 6, score = 500
            //   59                   | pop                 ecx
            //   8db534feffff         | lea                 esi, [ebp - 0x1cc]
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   8b7d14               | mov                 edi, dword ptr [ebp + 0x14]
            //   6a14                 | push                0x14
            //   59                   | pop                 ecx

        $sequence_8 = { e8???????? ff75f4 8bf8 ff75f0 8bda ff75ec }
            // n = 6, score = 500
            //   e8????????           |                     
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   8bf8                 | mov                 edi, eax
            //   ff75f0               | push                dword ptr [ebp - 0x10]
            //   8bda                 | mov                 ebx, edx
            //   ff75ec               | push                dword ptr [ebp - 0x14]

        $sequence_9 = { 8b45f0 8945e8 8d45ec 50 }
            // n = 4, score = 500
            //   8b45f0               | mov                 eax, dword ptr [ebp - 0x10]
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax
            //   8d45ec               | lea                 eax, [ebp - 0x14]
            //   50                   | push                eax

    condition:
        7 of them and filesize < 328704
}