rule win_smominru_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        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 = "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 = { 8b5604 8d45f4 e8???????? 8d55f0 }
            // n = 4, score = 100
            //   8b5604               | mov                 edx, dword ptr [esi + 4]
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   e8????????           |                     
            //   8d55f0               | lea                 edx, [ebp - 0x10]

        $sequence_1 = { 89482c f7402c00070000 668b4e30 66894830 668b4e32 }
            // n = 5, score = 100
            //   89482c               | mov                 dword ptr [eax + 0x2c], ecx
            //   f7402c00070000       | test                dword ptr [eax + 0x2c], 0x700
            //   668b4e30             | mov                 cx, word ptr [esi + 0x30]
            //   66894830             | mov                 word ptr [eax + 0x30], cx
            //   668b4e32             | mov                 cx, word ptr [esi + 0x32]

        $sequence_2 = { 833800 0f84b1fdbb7b 50 e8???????? c745fcfeffffff e8???????? }
            // n = 6, score = 100
            //   833800               | cmp                 dword ptr [eax], 0
            //   0f84b1fdbb7b         | je                  0x7bbbfdb7
            //   50                   | push                eax
            //   e8????????           |                     
            //   c745fcfeffffff       | mov                 dword ptr [ebp - 4], 0xfffffffe
            //   e8????????           |                     

        $sequence_3 = { 8b5608 3b542410 720d 8b4c2420 }
            // n = 4, score = 100
            //   8b5608               | mov                 edx, dword ptr [esi + 8]
            //   3b542410             | cmp                 edx, dword ptr [esp + 0x10]
            //   720d                 | jb                  0xf
            //   8b4c2420             | mov                 ecx, dword ptr [esp + 0x20]

        $sequence_4 = { 8b5604 b817b00000 e8???????? 85c0 }
            // n = 4, score = 100
            //   8b5604               | mov                 edx, dword ptr [esi + 4]
            //   b817b00000           | mov                 eax, 0xb017
            //   e8????????           |                     
            //   85c0                 | test                eax, eax

        $sequence_5 = { 8b5608 25ff000000 0fa302 0f92c0 }
            // n = 4, score = 100
            //   8b5608               | mov                 edx, dword ptr [esi + 8]
            //   25ff000000           | and                 eax, 0xff
            //   0fa302               | bt                  dword ptr [edx], eax
            //   0f92c0               | setb                al

        $sequence_6 = { 64ff15c0000000 83c404 c3 57 5f 55 8d6c2400 }
            // n = 7, score = 100
            //   64ff15c0000000       | call                dword ptr fs:[0xc0]
            //   83c404               | add                 esp, 4
            //   c3                   | ret                 
            //   57                   | push                edi
            //   5f                   | pop                 edi
            //   55                   | push                ebp
            //   8d6c2400             | lea                 ebp, [esp]

        $sequence_7 = { 8d6c2400 5d ff25???????? 8d7f00 55 8d6c2400 }
            // n = 6, score = 100
            //   8d6c2400             | lea                 ebp, [esp]
            //   5d                   | pop                 ebp
            //   ff25????????         |                     
            //   8d7f00               | lea                 edi, [edi]
            //   55                   | push                ebp
            //   8d6c2400             | lea                 ebp, [esp]

        $sequence_8 = { 8b5604 e8???????? 83fa00 7503 }
            // n = 4, score = 100
            //   8b5604               | mov                 edx, dword ptr [esi + 4]
            //   e8????????           |                     
            //   83fa00               | cmp                 edx, 0
            //   7503                 | jne                 5

        $sequence_9 = { 8b5608 0fafd0 03d2 8b8b34010000 }
            // n = 4, score = 100
            //   8b5608               | mov                 edx, dword ptr [esi + 8]
            //   0fafd0               | imul                edx, eax
            //   03d2                 | add                 edx, edx
            //   8b8b34010000         | mov                 ecx, dword ptr [ebx + 0x134]

        $sequence_10 = { 8b5608 42 8b4604 e8???????? }
            // n = 4, score = 100
            //   8b5608               | mov                 edx, dword ptr [esi + 8]
            //   42                   | inc                 edx
            //   8b4604               | mov                 eax, dword ptr [esi + 4]
            //   e8????????           |                     

        $sequence_11 = { f3a5 f7430800000401 5f 0f841b3ea97b 837b1000 }
            // n = 5, score = 100
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   f7430800000401       | test                dword ptr [ebx + 8], 0x1040000
            //   5f                   | pop                 edi
            //   0f841b3ea97b         | je                  0x7ba93e21
            //   837b1000             | cmp                 dword ptr [ebx + 0x10], 0

        $sequence_12 = { 0f82f447ab7b 8b45bc 03c7 3bc7 0f82e747ab7b 3bc8 }
            // n = 6, score = 100
            //   0f82f447ab7b         | jb                  0x7bab47fa
            //   8b45bc               | mov                 eax, dword ptr [ebp - 0x44]
            //   03c7                 | add                 eax, edi
            //   3bc7                 | cmp                 eax, edi
            //   0f82e747ab7b         | jb                  0x7bab47ed
            //   3bc8                 | cmp                 ecx, eax

        $sequence_13 = { 0f859792c17b f6474801 0f85f18fbd7b f6c307 0f85ad92c17b 8d43f8 80780705 }
            // n = 7, score = 100
            //   0f859792c17b         | jne                 0x7bc1929d
            //   f6474801             | test                byte ptr [edi + 0x48], 1
            //   0f85f18fbd7b         | jne                 0x7bbd8ff7
            //   f6c307               | test                bl, 7
            //   0f85ad92c17b         | jne                 0x7bc192b3
            //   8d43f8               | lea                 eax, [ebx - 8]
            //   80780705             | cmp                 byte ptr [eax + 7], 5

        $sequence_14 = { 8b5604 8bc6 e8???????? 5e }
            // n = 4, score = 100
            //   8b5604               | mov                 edx, dword ptr [esi + 4]
            //   8bc6                 | mov                 eax, esi
            //   e8????????           |                     
            //   5e                   | pop                 esi

        $sequence_15 = { 55 54 5d 5d ff25???????? b814200000 b9c0d81f7b }
            // n = 7, score = 100
            //   55                   | push                ebp
            //   54                   | push                esp
            //   5d                   | pop                 ebp
            //   5d                   | pop                 ebp
            //   ff25????????         |                     
            //   b814200000           | mov                 eax, 0x2014
            //   b9c0d81f7b           | mov                 ecx, 0x7b1fd8c0

    condition:
        7 of them and filesize < 8167424
}