rule win_pushdo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        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 = "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 = { f7f9 33c9 ba88020000 f7e2 0f90c1 f7d9 }
            // n = 6, score = 1300
            //   f7f9                 | idiv                ecx
            //   33c9                 | xor                 ecx, ecx
            //   ba88020000           | mov                 edx, 0x288
            //   f7e2                 | mul                 edx
            //   0f90c1               | seto                cl
            //   f7d9                 | neg                 ecx

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

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

        $sequence_3 = { 8b4df4 0fbe940df0feffff 0395e8feffff 81e2ff000000 }
            // n = 4, score = 800
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   0fbe940df0feffff     | movsx               edx, byte ptr [ebp + ecx - 0x110]
            //   0395e8feffff         | add                 edx, dword ptr [ebp - 0x118]
            //   81e2ff000000         | and                 edx, 0xff

        $sequence_4 = { 8a8c05f0feffff 888c15f0feffff 8b55fc 8a85effeffff }
            // n = 4, score = 800
            //   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]

        $sequence_5 = { 81e1ff000000 898de8feffff 8b85e8feffff 8a8c05f0feffff 888deffeffff }
            // n = 5, score = 800
            //   81e1ff000000         | and                 ecx, 0xff
            //   898de8feffff         | mov                 dword ptr [ebp - 0x118], ecx
            //   8b85e8feffff         | mov                 eax, dword ptr [ebp - 0x118]
            //   8a8c05f0feffff       | mov                 cl, byte ptr [ebp + eax - 0x110]
            //   888deffeffff         | mov                 byte ptr [ebp - 0x111], cl

        $sequence_6 = { 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_7 = { 03c8 81e1ff000000 0fbe8c0df0feffff 33d1 8b450c 0345fc }
            // n = 6, score = 800
            //   03c8                 | add                 ecx, eax
            //   81e1ff000000         | and                 ecx, 0xff
            //   0fbe8c0df0feffff     | movsx               ecx, byte ptr [ebp + ecx - 0x110]
            //   33d1                 | xor                 edx, ecx
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   0345fc               | add                 eax, dword ptr [ebp - 4]

        $sequence_8 = { 0f84ba000000 8b1d???????? 8945f8 8d4605 50 6a08 }
            // n = 6, score = 600
            //   0f84ba000000         | je                  0xc0
            //   8b1d????????         |                     
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   8d4605               | lea                 eax, [esi + 5]
            //   50                   | push                eax
            //   6a08                 | push                8

        $sequence_9 = { 3bdf 7431 57 8d4508 50 56 }
            // n = 6, score = 600
            //   3bdf                 | cmp                 ebx, edi
            //   7431                 | je                  0x33
            //   57                   | push                edi
            //   8d4508               | lea                 eax, [ebp + 8]
            //   50                   | push                eax
            //   56                   | push                esi

        $sequence_10 = { 6a03 884102 58 5f 5b }
            // n = 5, score = 600
            //   6a03                 | push                3
            //   884102               | mov                 byte ptr [ecx + 2], al
            //   58                   | pop                 eax
            //   5f                   | pop                 edi
            //   5b                   | pop                 ebx

        $sequence_11 = { 53 55 68???????? 894508 8b442424 53 53 }
            // n = 7, score = 600
            //   53                   | push                ebx
            //   55                   | push                ebp
            //   68????????           |                     
            //   894508               | mov                 dword ptr [ebp + 8], eax
            //   8b442424             | mov                 eax, dword ptr [esp + 0x24]
            //   53                   | push                ebx
            //   53                   | push                ebx

        $sequence_12 = { a4 e8???????? 68???????? 50 8945e8 e8???????? }
            // n = 6, score = 600
            //   a4                   | movsb               byte ptr es:[edi], byte ptr [esi]
            //   e8????????           |                     
            //   68????????           |                     
            //   50                   | push                eax
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax
            //   e8????????           |                     

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

        $sequence_14 = { 8bec 81ece4010000 68???????? e8???????? 6800280000 e8???????? 89854cfeffff }
            // n = 7, score = 200
            //   8bec                 | mov                 ebp, esp
            //   81ece4010000         | sub                 esp, 0x1e4
            //   68????????           |                     
            //   e8????????           |                     
            //   6800280000           | push                0x2800
            //   e8????????           |                     
            //   89854cfeffff         | mov                 dword ptr [ebp - 0x1b4], eax

        $sequence_15 = { 833a00 0f8486000000 8b45dc 8b4d08 0308 894dd4 }
            // n = 6, score = 200
            //   833a00               | cmp                 dword ptr [edx], 0
            //   0f8486000000         | je                  0x8c
            //   8b45dc               | mov                 eax, dword ptr [ebp - 0x24]
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   0308                 | add                 ecx, dword ptr [eax]
            //   894dd4               | mov                 dword ptr [ebp - 0x2c], ecx

        $sequence_16 = { 8b4d10 83c104 51 668b550c 52 }
            // n = 5, score = 200
            //   8b4d10               | mov                 ecx, dword ptr [ebp + 0x10]
            //   83c104               | add                 ecx, 4
            //   51                   | push                ecx
            //   668b550c             | mov                 dx, word ptr [ebp + 0xc]
            //   52                   | push                edx

        $sequence_17 = { 6a00 8b45f4 c1e005 034508 }
            // n = 4, score = 200
            //   6a00                 | push                0
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   c1e005               | shl                 eax, 5
            //   034508               | add                 eax, dword ptr [ebp + 8]

        $sequence_18 = { 8d85c0fdffff 50 8d8dc0fdffff 51 }
            // n = 4, score = 200
            //   8d85c0fdffff         | lea                 eax, [ebp - 0x240]
            //   50                   | push                eax
            //   8d8dc0fdffff         | lea                 ecx, [ebp - 0x240]
            //   51                   | push                ecx

        $sequence_19 = { 8b45e4 50 8b4ddc 69c920010000 8b550c 8d440a04 }
            // n = 6, score = 200
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]
            //   50                   | push                eax
            //   8b4ddc               | mov                 ecx, dword ptr [ebp - 0x24]
            //   69c920010000         | imul                ecx, ecx, 0x120
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   8d440a04             | lea                 eax, [edx + ecx + 4]

        $sequence_20 = { ff15???????? 85c0 7504 33c0 eb67 eb93 }
            // n = 6, score = 200
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7504                 | jne                 6
            //   33c0                 | xor                 eax, eax
            //   eb67                 | jmp                 0x69
            //   eb93                 | jmp                 0xffffff95

    condition:
        7 of them and filesize < 163840
}