rule win_pushdo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.pushdo."
        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.pushdo"
        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 = { f7f9 33c9 ba88020000 f7e2 }
            // n = 4, score = 1300
            //   f7f9                 | idiv                ecx
            //   33c9                 | xor                 ecx, ecx
            //   ba88020000           | mov                 edx, 0x288
            //   f7e2                 | mul                 edx

        $sequence_1 = { 50 ff15???????? 33d2 b9ffff0000 }
            // n = 4, score = 1300
            //   50                   | push                eax
            //   ff15????????         |                     
            //   33d2                 | xor                 edx, edx
            //   b9ffff0000           | mov                 ecx, 0xffff

        $sequence_2 = { 60 8b45fc b10b d3c0 61 }
            // n = 5, score = 1200
            //   60                   | pushal              
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   b10b                 | mov                 cl, 0xb
            //   d3c0                 | rol                 eax, cl
            //   61                   | popal               

        $sequence_3 = { 8b45fc 33d2 f77518 8b4514 0fbe1410 03ca 81e1ff000000 }
            // n = 7, score = 800
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   33d2                 | xor                 edx, edx
            //   f77518               | div                 dword ptr [ebp + 0x18]
            //   8b4514               | mov                 eax, dword ptr [ebp + 0x14]
            //   0fbe1410             | movsx               edx, byte ptr [eax + edx]
            //   03ca                 | add                 ecx, edx
            //   81e1ff000000         | and                 ecx, 0xff

        $sequence_4 = { 8b4df8 8811 ebd2 c785e8feffff00000000 }
            // n = 4, score = 800
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   8811                 | mov                 byte ptr [ecx], dl
            //   ebd2                 | jmp                 0xffffffd4
            //   c785e8feffff00000000     | mov    dword ptr [ebp - 0x118], 0

        $sequence_5 = { 817dfc00010000 736a 8b45fc 0fbe8c05f0feffff }
            // n = 4, score = 800
            //   817dfc00010000       | cmp                 dword ptr [ebp - 4], 0x100
            //   736a                 | jae                 0x6c
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   0fbe8c05f0feffff     | movsx               ecx, byte ptr [ebp + eax - 0x110]

        $sequence_6 = { 8b45fc 8a8c05f0feffff 888c15f0feffff 8b55fc 8a85effeffff 888415f0feffff }
            // n = 6, score = 800
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   8a8c05f0feffff       | mov                 cl, byte ptr [ebp + eax - 0x110]
            //   888c15f0feffff       | mov                 byte ptr [ebp + edx - 0x110], cl
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   8a85effeffff         | mov                 al, byte ptr [ebp - 0x111]
            //   888415f0feffff       | mov                 byte ptr [ebp + edx - 0x110], al

        $sequence_7 = { 8a85effeffff 888415f0feffff 8b4d08 034dfc 0fbe11 8b85e8feffff }
            // n = 6, score = 800
            //   8a85effeffff         | mov                 al, byte ptr [ebp - 0x111]
            //   888415f0feffff       | mov                 byte ptr [ebp + edx - 0x110], al
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   034dfc               | add                 ecx, dword ptr [ebp - 4]
            //   0fbe11               | movsx               edx, byte ptr [ecx]
            //   8b85e8feffff         | mov                 eax, dword ptr [ebp - 0x118]

        $sequence_8 = { 394508 0f84ce000000 8b750c 3bf0 0f84c3000000 394514 0f84ba000000 }
            // n = 7, score = 600
            //   394508               | cmp                 dword ptr [ebp + 8], eax
            //   0f84ce000000         | je                  0xd4
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   3bf0                 | cmp                 esi, eax
            //   0f84c3000000         | je                  0xc9
            //   394514               | cmp                 dword ptr [ebp + 0x14], eax
            //   0f84ba000000         | je                  0xc0

        $sequence_9 = { 50 895df8 ff15???????? 50 8d857cf5ffff 50 }
            // n = 6, score = 600
            //   50                   | push                eax
            //   895df8               | mov                 dword ptr [ebp - 8], ebx
            //   ff15????????         |                     
            //   50                   | push                eax
            //   8d857cf5ffff         | lea                 eax, [ebp - 0xa84]
            //   50                   | push                eax

        $sequence_10 = { 397dfc 746a 8b35???????? 8d45f4 }
            // n = 4, score = 600
            //   397dfc               | cmp                 dword ptr [ebp - 4], edi
            //   746a                 | je                  0x6c
            //   8b35????????         |                     
            //   8d45f4               | lea                 eax, [ebp - 0xc]

        $sequence_11 = { 771c ff750c 8d043e 50 e8???????? 59 59 }
            // n = 7, score = 600
            //   771c                 | ja                  0x1e
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   8d043e               | lea                 eax, [esi + edi]
            //   50                   | push                eax
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx

        $sequence_12 = { 57 8d4618 50 55 e8???????? 6a20 }
            // n = 6, score = 600
            //   57                   | push                edi
            //   8d4618               | lea                 eax, [esi + 0x18]
            //   50                   | push                eax
            //   55                   | push                ebp
            //   e8????????           |                     
            //   6a20                 | push                0x20

        $sequence_13 = { 52 8d8588fbffff 50 e8???????? }
            // n = 4, score = 500
            //   52                   | push                edx
            //   8d8588fbffff         | lea                 eax, [ebp - 0x478]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_14 = { 83ec20 a1???????? 8945e4 8a0d???????? 884de8 8b15???????? 8955e9 }
            // n = 7, score = 200
            //   83ec20               | sub                 esp, 0x20
            //   a1????????           |                     
            //   8945e4               | mov                 dword ptr [ebp - 0x1c], eax
            //   8a0d????????         |                     
            //   884de8               | mov                 byte ptr [ebp - 0x18], cl
            //   8b15????????         |                     
            //   8955e9               | mov                 dword ptr [ebp - 0x17], edx

        $sequence_15 = { 8b4508 0fb708 0fafd1 0355f8 8955f8 8b5508 83c202 }
            // n = 7, score = 200
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   0fb708               | movzx               ecx, word ptr [eax]
            //   0fafd1               | imul                edx, ecx
            //   0355f8               | add                 edx, dword ptr [ebp - 8]
            //   8955f8               | mov                 dword ptr [ebp - 8], edx
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   83c202               | add                 edx, 2

        $sequence_16 = { 8b4d0c 83c101 894d0c 8b55ec }
            // n = 4, score = 200
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   83c101               | add                 ecx, 1
            //   894d0c               | mov                 dword ptr [ebp + 0xc], ecx
            //   8b55ec               | mov                 edx, dword ptr [ebp - 0x14]

        $sequence_17 = { 8b4de8 034de4 894de8 8b5514 0355e4 895514 }
            // n = 6, score = 200
            //   8b4de8               | mov                 ecx, dword ptr [ebp - 0x18]
            //   034de4               | add                 ecx, dword ptr [ebp - 0x1c]
            //   894de8               | mov                 dword ptr [ebp - 0x18], ecx
            //   8b5514               | mov                 edx, dword ptr [ebp + 0x14]
            //   0355e4               | add                 edx, dword ptr [ebp - 0x1c]
            //   895514               | mov                 dword ptr [ebp + 0x14], edx

        $sequence_18 = { 7308 8b55cc 3b55fc 7204 33c0 eb33 8b450c }
            // n = 7, score = 200
            //   7308                 | jae                 0xa
            //   8b55cc               | mov                 edx, dword ptr [ebp - 0x34]
            //   3b55fc               | cmp                 edx, dword ptr [ebp - 4]
            //   7204                 | jb                  6
            //   33c0                 | xor                 eax, eax
            //   eb33                 | jmp                 0x35
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]

        $sequence_19 = { 52 8b45ec 50 ff15???????? 8945e4 837de400 7406 }
            // n = 7, score = 200
            //   52                   | push                edx
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   8945e4               | mov                 dword ptr [ebp - 0x1c], eax
            //   837de400             | cmp                 dword ptr [ebp - 0x1c], 0
            //   7406                 | je                  8

        $sequence_20 = { 8b4df4 c1e105 8b5508 837c0a0400 }
            // n = 4, score = 200
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   c1e105               | shl                 ecx, 5
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   837c0a0400           | cmp                 dword ptr [edx + ecx + 4], 0

    condition:
        7 of them and filesize < 163840
}