rule win_apocalipto_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.apocalipto."
        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.apocalipto"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 85c0 0f84c2090000 c7442404???????? 891c24 ff15???????? 83ec08 }
            // n = 6, score = 100
            //   85c0                 | test                eax, eax
            //   0f84c2090000         | je                  0x9c8
            //   c7442404????????     |                     
            //   891c24               | mov                 dword ptr [esp], ebx
            //   ff15????????         |                     
            //   83ec08               | sub                 esp, 8

        $sequence_1 = { a3???????? 85c0 0f8459070000 c7442404???????? 891c24 ff15???????? 83ec08 }
            // n = 7, score = 100
            //   a3????????           |                     
            //   85c0                 | test                eax, eax
            //   0f8459070000         | je                  0x75f
            //   c7442404????????     |                     
            //   891c24               | mov                 dword ptr [esp], ebx
            //   ff15????????         |                     
            //   83ec08               | sub                 esp, 8

        $sequence_2 = { 7367 8b450c c1e810 668945d8 }
            // n = 4, score = 100
            //   7367                 | jae                 0x69
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   c1e810               | shr                 eax, 0x10
            //   668945d8             | mov                 word ptr [ebp - 0x28], ax

        $sequence_3 = { 83ec08 a3???????? 85c0 0f84a7070000 c7442404???????? }
            // n = 5, score = 100
            //   83ec08               | sub                 esp, 8
            //   a3????????           |                     
            //   85c0                 | test                eax, eax
            //   0f84a7070000         | je                  0x7ad
            //   c7442404????????     |                     

        $sequence_4 = { 893c24 e8???????? 89c2 85c0 7430 8b85c8f3ffff }
            // n = 6, score = 100
            //   893c24               | mov                 dword ptr [esp], edi
            //   e8????????           |                     
            //   89c2                 | mov                 edx, eax
            //   85c0                 | test                eax, eax
            //   7430                 | je                  0x32
            //   8b85c8f3ffff         | mov                 eax, dword ptr [ebp - 0xc38]

        $sequence_5 = { 39c6 7367 8b450c c1e810 668945d8 31c0 }
            // n = 6, score = 100
            //   39c6                 | cmp                 esi, eax
            //   7367                 | jae                 0x69
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   c1e810               | shr                 eax, 0x10
            //   668945d8             | mov                 word ptr [ebp - 0x28], ax
            //   31c0                 | xor                 eax, eax

        $sequence_6 = { a3???????? 85c0 0f84480b0000 c7442404???????? 891c24 ff15???????? 83ec08 }
            // n = 7, score = 100
            //   a3????????           |                     
            //   85c0                 | test                eax, eax
            //   0f84480b0000         | je                  0xb4e
            //   c7442404????????     |                     
            //   891c24               | mov                 dword ptr [esp], ebx
            //   ff15????????         |                     
            //   83ec08               | sub                 esp, 8

        $sequence_7 = { c744240800400000 897c2404 893424 ff15???????? 83ec0c 31f6 e9???????? }
            // n = 7, score = 100
            //   c744240800400000     | mov                 dword ptr [esp + 8], 0x4000
            //   897c2404             | mov                 dword ptr [esp + 4], edi
            //   893424               | mov                 dword ptr [esp], esi
            //   ff15????????         |                     
            //   83ec0c               | sub                 esp, 0xc
            //   31f6                 | xor                 esi, esi
            //   e9????????           |                     

        $sequence_8 = { 890424 e8???????? 83f83f 7e41 c7442408c0000000 8b550c }
            // n = 6, score = 100
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   83f83f               | cmp                 eax, 0x3f
            //   7e41                 | jle                 0x43
            //   c7442408c0000000     | mov                 dword ptr [esp + 8], 0xc0
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]

        $sequence_9 = { 8944240c c744240800000000 c744240400000000 8b45d4 890424 ff15???????? 83ec1c }
            // n = 7, score = 100
            //   8944240c             | mov                 dword ptr [esp + 0xc], eax
            //   c744240800000000     | mov                 dword ptr [esp + 8], 0
            //   c744240400000000     | mov                 dword ptr [esp + 4], 0
            //   8b45d4               | mov                 eax, dword ptr [ebp - 0x2c]
            //   890424               | mov                 dword ptr [esp], eax
            //   ff15????????         |                     
            //   83ec1c               | sub                 esp, 0x1c

    condition:
        7 of them and filesize < 212992
}