rule win_unidentified_076_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.unidentified_076."
        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.unidentified_076"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { e8???????? 498bfe 4533c9 488b83c8000000 8b2cf0 468b2428 8b842490000000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   498bfe               | dec                 eax
            //   4533c9               | mov                 dword ptr [esp + 0x18], ebx
            //   488b83c8000000       | dec                 eax
            //   8b2cf0               | mov                 ebp, dword ptr [esp + 0x58]
            //   468b2428             | dec                 eax
            //   8b842490000000       | mov                 edi, dword ptr [esp + 0x60]

        $sequence_1 = { 81fd05140000 7e0a b8fdffffff e9???????? 8b473c 33c9 394764 }
            // n = 7, score = 100
            //   81fd05140000         | mov                 ecx, dword ptr [ebx + 0x108]
            //   7e0a                 | inc                 esp
            //   b8fdffffff           | mov                 eax, eax
            //   e9????????           |                     
            //   8b473c               | dec                 ecx
            //   33c9                 | mov                 edx, esi
            //   394764               | dec                 esp

        $sequence_2 = { 89442430 894340 483bd6 744d 8b7c2420 4c8b2a 8bc7 }
            // n = 7, score = 100
            //   89442430             | dec                 eax
            //   894340               | mov                 eax, dword ptr [edi + 0xc8]
            //   483bd6               | dec                 ecx
            //   744d                 | mov                 ecx, edi
            //   8b7c2420             | call                dword ptr [eax + 0x80]
            //   4c8b2a               | mov                 dword ptr [esi + 0x2cc], ebx
            //   8bc7                 | mov                 ebp, ebx

        $sequence_3 = { 0f8436020000 448bce 448bc5 ba05140000 33c9 }
            // n = 5, score = 100
            //   0f8436020000         | inc                 ecx
            //   448bce               | mov                 eax, 0x1000
            //   448bc5               | inc                 esp
            //   ba05140000           | lea                 ecx, [ecx + 4]
            //   33c9                 | je                  0x1ecd

        $sequence_4 = { 488b4b70 488d83b0080000 4533c9 c744242810000000 }
            // n = 4, score = 100
            //   488b4b70             | lea                 edx, [ebp + 0x58]
            //   488d83b0080000       | call                dword ptr [eax + 0x740]
            //   4533c9               | mov                 ebx, edi
            //   c744242810000000     | inc                 esp

        $sequence_5 = { 0f8f6fffffff 488b87c8000000 33db ff9050010000 }
            // n = 4, score = 100
            //   0f8f6fffffff         | mov                 edx, 0x1965
            //   488b87c8000000       | jne                 0x21f
            //   33db                 | mov                 edx, 0x400
            //   ff9050010000         | call                dword ptr [edi + 0xf8]

        $sequence_6 = { 488bcd ff9020070000 488b87c8000000 488b9424a0000000 488d9f5c060000 488bcb ff90f0070000 }
            // n = 7, score = 100
            //   488bcd               | cmp                 edx, esi
            //   ff9020070000         | dec                 eax
            //   488b87c8000000       | lea                 esi, [edi + 0x120]
            //   488b9424a0000000     | inc                 ecx
            //   488d9f5c060000       | mov                 esi, 0x30
            //   488bcb               | dec                 eax
            //   ff90f0070000         | test                esi, esi

        $sequence_7 = { 4885c0 741d 448bcd 458bc6 8bd6 33c9 ff97f8000000 }
            // n = 7, score = 100
            //   4885c0               | mov                 eax, dword ptr [esi + 0xc8]
            //   741d                 | dec                 esp
            //   448bcd               | mov                 eax, edi
            //   458bc6               | xor                 edx, edx
            //   8bd6                 | dec                 eax
            //   33c9                 | mov                 ecx, dword ptr [esi + 0x1d0]
            //   ff97f8000000         | dec                 eax

        $sequence_8 = { 4c8b93c8000000 488b4b70 488d83b0080000 4533c9 c744242810000000 4889442420 41ff92e0040000 }
            // n = 7, score = 100
            //   4c8b93c8000000       | dec                 eax
            //   488b4b70             | mov                 edi, dword ptr [ecx + 0x1f0]
            //   488d83b0080000       | dec                 eax
            //   4533c9               | and                 dword ptr [esp + 0x68], 0
            //   c744242810000000     | and                 dword ptr [esp + 0x50], 0
            //   4889442420           | dec                 ecx
            //   41ff92e0040000       | mov                 esi, eax

        $sequence_9 = { e8???????? 41bb01000000 8b942488000000 8b8c2498000000 442be1 4c03f1 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   41bb01000000         | dec                 esp
            //   8b942488000000       | mov                 ecx, esi
            //   8b8c2498000000       | inc                 ecx
            //   442be1               | mov                 eax, 0x8000
            //   4c03f1               | call                dword ptr [ebx + 0x100]

    condition:
        7 of them and filesize < 114688
}