rule win_smominru_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.smominru."
        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.smominru"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { 8b55fc f76a14 8bd0 c1e202 }
            // n = 4, score = 100
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   f76a14               | imul                dword ptr [edx + 0x14]
            //   8bd0                 | mov                 edx, eax
            //   c1e202               | shl                 edx, 2

        $sequence_1 = { 0f843537ac7b 8bc8 81e103000010 83f903 }
            // n = 4, score = 100
            //   0f843537ac7b         | je                  0x7bac373b
            //   8bc8                 | mov                 ecx, eax
            //   81e103000010         | and                 ecx, 0x10000003
            //   83f903               | cmp                 ecx, 3

        $sequence_2 = { 8bc6 5e c9 c20800 8d7f00 55 }
            // n = 6, score = 100
            //   8bc6                 | mov                 eax, esi
            //   5e                   | pop                 esi
            //   c9                   | leave               
            //   c20800               | ret                 8
            //   8d7f00               | lea                 edi, [edi]
            //   55                   | push                ebp

        $sequence_3 = { 8b55fc e8???????? eb18 8d45ec }
            // n = 4, score = 100
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   e8????????           |                     
            //   eb18                 | jmp                 0x1a
            //   8d45ec               | lea                 eax, [ebp - 0x14]

        $sequence_4 = { 8b4e1c 89481c 8b4e20 894820 8b4e24 894824 8b4e28 }
            // n = 7, score = 100
            //   8b4e1c               | mov                 ecx, dword ptr [esi + 0x1c]
            //   89481c               | mov                 dword ptr [eax + 0x1c], ecx
            //   8b4e20               | mov                 ecx, dword ptr [esi + 0x20]
            //   894820               | mov                 dword ptr [eax + 0x20], ecx
            //   8b4e24               | mov                 ecx, dword ptr [esi + 0x24]
            //   894824               | mov                 dword ptr [eax + 0x24], ecx
            //   8b4e28               | mov                 ecx, dword ptr [esi + 0x28]

        $sequence_5 = { 8b55fc e8???????? f645fb02 740c }
            // n = 4, score = 100
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   e8????????           |                     
            //   f645fb02             | test                byte ptr [ebp - 5], 2
            //   740c                 | je                  0xe

        $sequence_6 = { 8b55fc e8???????? f7c600040000 742c }
            // n = 4, score = 100
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   e8????????           |                     
            //   f7c600040000         | test                esi, 0x400
            //   742c                 | je                  0x2e

        $sequence_7 = { 0f8478a6aa7b 8b7514 85f6 0f84d9a4aa7b 8bce e8???????? 3d00010000 }
            // n = 7, score = 100
            //   0f8478a6aa7b         | je                  0x7baaa67e
            //   8b7514               | mov                 esi, dword ptr [ebp + 0x14]
            //   85f6                 | test                esi, esi
            //   0f84d9a4aa7b         | je                  0x7baaa4df
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   3d00010000           | cmp                 eax, 0x100

        $sequence_8 = { 89461c 8b85f0fdffff 894620 8bc3 5b 8b4dfc 33cd }
            // n = 7, score = 100
            //   89461c               | mov                 dword ptr [esi + 0x1c], eax
            //   8b85f0fdffff         | mov                 eax, dword ptr [ebp - 0x210]
            //   894620               | mov                 dword ptr [esi + 0x20], eax
            //   8bc3                 | mov                 eax, ebx
            //   5b                   | pop                 ebx
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   33cd                 | xor                 ecx, ebp

        $sequence_9 = { 0f850647c07b c745e400000000 8b37 8975e0 85f6 0f842bfebb7b 83feff }
            // n = 7, score = 100
            //   0f850647c07b         | jne                 0x7bc0470c
            //   c745e400000000       | mov                 dword ptr [ebp - 0x1c], 0
            //   8b37                 | mov                 esi, dword ptr [edi]
            //   8975e0               | mov                 dword ptr [ebp - 0x20], esi
            //   85f6                 | test                esi, esi
            //   0f842bfebb7b         | je                  0x7bbbfe31
            //   83feff               | cmp                 esi, -1

        $sequence_10 = { 8b55fc ff560c 8b450c ff00 }
            // n = 4, score = 100
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   ff560c               | call                dword ptr [esi + 0xc]
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   ff00                 | inc                 dword ptr [eax]

        $sequence_11 = { 50 ff15???????? 81fe200100c0 0f84f32db37b 33c0 }
            // n = 5, score = 100
            //   50                   | push                eax
            //   ff15????????         |                     
            //   81fe200100c0         | cmp                 esi, 0xc0000120
            //   0f84f32db37b         | je                  0x7bb32df9
            //   33c0                 | xor                 eax, eax

        $sequence_12 = { 8b55fc f76a14 c1e002 50 }
            // n = 4, score = 100
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   f76a14               | imul                dword ptr [edx + 0x14]
            //   c1e002               | shl                 eax, 2
            //   50                   | push                eax

        $sequence_13 = { 8b55fc f6427001 0f848c000000 8b55dc }
            // n = 4, score = 100
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   f6427001             | test                byte ptr [edx + 0x70], 1
            //   0f848c000000         | je                  0x92
            //   8b55dc               | mov                 edx, dword ptr [ebp - 0x24]

        $sequence_14 = { 8945f8 e8???????? 8b401c 6a00 }
            // n = 4, score = 100
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   e8????????           |                     
            //   8b401c               | mov                 eax, dword ptr [eax + 0x1c]
            //   6a00                 | push                0

        $sequence_15 = { 8b55fc e8???????? e9???????? a1???????? 8b00 80787c00 0f84a7000000 }
            // n = 7, score = 100
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   e8????????           |                     
            //   e9????????           |                     
            //   a1????????           |                     
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   80787c00             | cmp                 byte ptr [eax + 0x7c], 0
            //   0f84a7000000         | je                  0xad

    condition:
        7 of them and filesize < 8167424
}