rule win_unidentified_088_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.unidentified_088."
        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_088"
        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 = { c705????????58024200 c705????????04000000 c705????????04000000 c605????????16 c705????????a0a34200 c705????????704c4000 c705????????18000000 }
            // n = 7, score = 100
            //   c705????????58024200     |     
            //   c705????????04000000     |     
            //   c705????????04000000     |     
            //   c605????????16       |                     
            //   c705????????a0a34200     |     
            //   c705????????704c4000     |     
            //   c705????????18000000     |     

        $sequence_1 = { 31c0 85d2 7402 8b02 3b45d0 0f8450ffffff b9???????? }
            // n = 7, score = 100
            //   31c0                 | xor                 eax, eax
            //   85d2                 | test                edx, edx
            //   7402                 | je                  4
            //   8b02                 | mov                 eax, dword ptr [edx]
            //   3b45d0               | cmp                 eax, dword ptr [ebp - 0x30]
            //   0f8450ffffff         | je                  0xffffff56
            //   b9????????           |                     

        $sequence_2 = { e8???????? 51 51 8b06 39c7 0f848b000000 85c0 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   51                   | push                ecx
            //   51                   | push                ecx
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   39c7                 | cmp                 edi, eax
            //   0f848b000000         | je                  0x91
            //   85c0                 | test                eax, eax

        $sequence_3 = { c705????????04000000 c605????????18 c705????????20ac4200 c705????????14254100 c605????????01 c705????????00000000 c705????????e0ab4200 }
            // n = 7, score = 100
            //   c705????????04000000     |     
            //   c605????????18       |                     
            //   c705????????20ac4200     |     
            //   c705????????14254100     |     
            //   c605????????01       |                     
            //   c705????????00000000     |     
            //   c705????????e0ab4200     |     

        $sequence_4 = { 8b45b0 e8???????? 84c0 7405 e8???????? 8b45c4 b903000000 }
            // n = 7, score = 100
            //   8b45b0               | mov                 eax, dword ptr [ebp - 0x50]
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7405                 | je                  7
            //   e8????????           |                     
            //   8b45c4               | mov                 eax, dword ptr [ebp - 0x3c]
            //   b903000000           | mov                 ecx, 3

        $sequence_5 = { 66c705????????1903 c605????????01 c705????????10000000 c705????????40a74200 c705????????01e04100 }
            // n = 5, score = 100
            //   66c705????????1903     |     
            //   c605????????01       |                     
            //   c705????????10000000     |     
            //   c705????????40a74200     |     
            //   c705????????01e04100     |     

        $sequence_6 = { 85c0 0f85be020000 e9???????? 8b55c4 8d4ddc e8???????? }
            // n = 6, score = 100
            //   85c0                 | test                eax, eax
            //   0f85be020000         | jne                 0x2c4
            //   e9????????           |                     
            //   8b55c4               | mov                 edx, dword ptr [ebp - 0x3c]
            //   8d4ddc               | lea                 ecx, [ebp - 0x24]
            //   e8????????           |                     

        $sequence_7 = { 8d4de0 890424 8b45c8 89542404 8b55cc 894c2408 e8???????? }
            // n = 7, score = 100
            //   8d4de0               | lea                 ecx, [ebp - 0x20]
            //   890424               | mov                 dword ptr [esp], eax
            //   8b45c8               | mov                 eax, dword ptr [ebp - 0x38]
            //   89542404             | mov                 dword ptr [esp + 4], edx
            //   8b55cc               | mov                 edx, dword ptr [ebp - 0x34]
            //   894c2408             | mov                 dword ptr [esp + 8], ecx
            //   e8????????           |                     

        $sequence_8 = { 41 e8???????? ba???????? 89c7 e8???????? 8b5318 e8???????? }
            // n = 7, score = 100
            //   41                   | inc                 ecx
            //   e8????????           |                     
            //   ba????????           |                     
            //   89c7                 | mov                 edi, eax
            //   e8????????           |                     
            //   8b5318               | mov                 edx, dword ptr [ebx + 0x18]
            //   e8????????           |                     

        $sequence_9 = { 7631 89f0 c7442410ffc99a3b c1f81f c744241400000000 c744240800000000 }
            // n = 6, score = 100
            //   7631                 | jbe                 0x33
            //   89f0                 | mov                 eax, esi
            //   c7442410ffc99a3b     | mov                 dword ptr [esp + 0x10], 0x3b9ac9ff
            //   c1f81f               | sar                 eax, 0x1f
            //   c744241400000000     | mov                 dword ptr [esp + 0x14], 0
            //   c744240800000000     | mov                 dword ptr [esp + 8], 0

    condition:
        7 of them and filesize < 919552
}