rule win_vendetta_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.vendetta."
        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.vendetta"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { b001 5e c9 c20c00 53 33db 83f9ff }
            // n = 7, score = 100
            //   b001                 | mov                 al, 1
            //   5e                   | pop                 esi
            //   c9                   | leave               
            //   c20c00               | ret                 0xc
            //   53                   | push                ebx
            //   33db                 | xor                 ebx, ebx
            //   83f9ff               | cmp                 ecx, -1

        $sequence_1 = { 8b34cd00814100 8b4d08 6a5a 2bce 5b }
            // n = 5, score = 100
            //   8b34cd00814100       | mov                 esi, dword ptr [ecx*8 + 0x418100]
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   6a5a                 | push                0x5a
            //   2bce                 | sub                 ecx, esi
            //   5b                   | pop                 ebx

        $sequence_2 = { 56 ff15???????? 8a85dff7ffff 8ad8 8b85e8f7ffff 83f8ff }
            // n = 6, score = 100
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8a85dff7ffff         | mov                 al, byte ptr [ebp - 0x821]
            //   8ad8                 | mov                 bl, al
            //   8b85e8f7ffff         | mov                 eax, dword ptr [ebp - 0x818]
            //   83f8ff               | cmp                 eax, -1

        $sequence_3 = { 8d8de8f7ffff 50 e8???????? 84c0 0f843b010000 }
            // n = 5, score = 100
            //   8d8de8f7ffff         | lea                 ecx, [ebp - 0x818]
            //   50                   | push                eax
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   0f843b010000         | je                  0x141

        $sequence_4 = { 50 e8???????? 83c408 84c0 0f845d010000 6a00 }
            // n = 6, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   84c0                 | test                al, al
            //   0f845d010000         | je                  0x163
            //   6a00                 | push                0

        $sequence_5 = { 7424 57 8d85f8f7ffff 50 6868010000 68???????? }
            // n = 6, score = 100
            //   7424                 | je                  0x26
            //   57                   | push                edi
            //   8d85f8f7ffff         | lea                 eax, [ebp - 0x808]
            //   50                   | push                eax
            //   6868010000           | push                0x168
            //   68????????           |                     

        $sequence_6 = { 8d8df4fbffff e8???????? 838d0cfcffff10 83a5fcfbffff00 51 8d8df4fbffff e8???????? }
            // n = 7, score = 100
            //   8d8df4fbffff         | lea                 ecx, [ebp - 0x40c]
            //   e8????????           |                     
            //   838d0cfcffff10       | or                  dword ptr [ebp - 0x3f4], 0x10
            //   83a5fcfbffff00       | and                 dword ptr [ebp - 0x404], 0
            //   51                   | push                ecx
            //   8d8df4fbffff         | lea                 ecx, [ebp - 0x40c]
            //   e8????????           |                     

        $sequence_7 = { 8bcb e8???????? 83a500fcffff00 51 8d8df8fbffff }
            // n = 5, score = 100
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     
            //   83a500fcffff00       | and                 dword ptr [ebp - 0x400], 0
            //   51                   | push                ecx
            //   8d8df8fbffff         | lea                 ecx, [ebp - 0x408]

        $sequence_8 = { 03b40500ffffff 03b094b04100 8bc3 03b5d8feffff 01b5e8feffff }
            // n = 5, score = 100
            //   03b40500ffffff       | add                 esi, dword ptr [ebp + eax - 0x100]
            //   03b094b04100         | add                 esi, dword ptr [eax + 0x41b094]
            //   8bc3                 | mov                 eax, ebx
            //   03b5d8feffff         | add                 esi, dword ptr [ebp - 0x128]
            //   01b5e8feffff         | add                 dword ptr [ebp - 0x118], esi

        $sequence_9 = { 03b098b04100 8bc7 03b5f0feffff 01b5e4feffff }
            // n = 4, score = 100
            //   03b098b04100         | add                 esi, dword ptr [eax + 0x41b098]
            //   8bc7                 | mov                 eax, edi
            //   03b5f0feffff         | add                 esi, dword ptr [ebp - 0x110]
            //   01b5e4feffff         | add                 dword ptr [ebp - 0x11c], esi

    condition:
        7 of them and filesize < 296960
}