rule win_unidentified_074_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.unidentified_074."
        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_074"
        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 = { 80e10f c0e004 02c8 884ded 85f6 7e2b 8b5de4 }
            // n = 7, score = 200
            //   80e10f               | and                 cl, 0xf
            //   c0e004               | shl                 al, 4
            //   02c8                 | add                 cl, al
            //   884ded               | mov                 byte ptr [ebp - 0x13], cl
            //   85f6                 | test                esi, esi
            //   7e2b                 | jle                 0x2d
            //   8b5de4               | mov                 ebx, dword ptr [ebp - 0x1c]

        $sequence_1 = { 0f87cf000000 81bde8e6ffffff000000 0f87bf000000 81bdece6ffffff000000 0f87af000000 }
            // n = 5, score = 200
            //   0f87cf000000         | ja                  0xd5
            //   81bde8e6ffffff000000     | cmp    dword ptr [ebp - 0x1918], 0xff
            //   0f87bf000000         | ja                  0xc5
            //   81bdece6ffffff000000     | cmp    dword ptr [ebp - 0x1914], 0xff
            //   0f87af000000         | ja                  0xb5

        $sequence_2 = { 6a01 83ec08 c745d400000000 e8???????? 50 }
            // n = 5, score = 200
            //   6a01                 | push                1
            //   83ec08               | sub                 esp, 8
            //   c745d400000000       | mov                 dword ptr [ebp - 0x2c], 0
            //   e8????????           |                     
            //   50                   | push                eax

        $sequence_3 = { 7202 8b3f c60700 8bc6 8b4df4 }
            // n = 5, score = 200
            //   7202                 | jb                  4
            //   8b3f                 | mov                 edi, dword ptr [edi]
            //   c60700               | mov                 byte ptr [edi], 0
            //   8bc6                 | mov                 eax, esi
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]

        $sequence_4 = { 8d45f4 64a300000000 8b4510 8b5d08 8b750c 8b7d14 c78570dfffff00000000 }
            // n = 7, score = 200
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   64a300000000         | mov                 dword ptr fs:[0], eax
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   8b5d08               | mov                 ebx, dword ptr [ebp + 8]
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   8b7d14               | mov                 edi, dword ptr [ebp + 0x14]
            //   c78570dfffff00000000     | mov    dword ptr [ebp - 0x2090], 0

        $sequence_5 = { c743140f000000 c7431000000000 c60300 8b9584e7ffff 83fa10 7324 }
            // n = 6, score = 200
            //   c743140f000000       | mov                 dword ptr [ebx + 0x14], 0xf
            //   c7431000000000       | mov                 dword ptr [ebx + 0x10], 0
            //   c60300               | mov                 byte ptr [ebx], 0
            //   8b9584e7ffff         | mov                 edx, dword ptr [ebp - 0x187c]
            //   83fa10               | cmp                 edx, 0x10
            //   7324                 | jae                 0x26

        $sequence_6 = { c0e002 02c8 8ac7 8b5de4 884dec }
            // n = 5, score = 200
            //   c0e002               | shl                 al, 2
            //   02c8                 | add                 cl, al
            //   8ac7                 | mov                 al, bh
            //   8b5de4               | mov                 ebx, dword ptr [ebp - 0x1c]
            //   884dec               | mov                 byte ptr [ebp - 0x14], cl

        $sequence_7 = { b9???????? e8???????? 8945fc ff55fc ff25???????? 55 8bec }
            // n = 7, score = 200
            //   b9????????           |                     
            //   e8????????           |                     
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   ff55fc               | call                dword ptr [ebp - 4]
            //   ff25????????         |                     
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp

        $sequence_8 = { 50 0fb68539ffffff 50 0fb68538ffffff 50 }
            // n = 5, score = 200
            //   50                   | push                eax
            //   0fb68539ffffff       | movzx               eax, byte ptr [ebp - 0xc7]
            //   50                   | push                eax
            //   0fb68538ffffff       | movzx               eax, byte ptr [ebp - 0xc8]
            //   50                   | push                eax

        $sequence_9 = { 8b5610 8bc2 53 8b5d0c f7d0 57 3bc3 }
            // n = 7, score = 200
            //   8b5610               | mov                 edx, dword ptr [esi + 0x10]
            //   8bc2                 | mov                 eax, edx
            //   53                   | push                ebx
            //   8b5d0c               | mov                 ebx, dword ptr [ebp + 0xc]
            //   f7d0                 | not                 eax
            //   57                   | push                edi
            //   3bc3                 | cmp                 eax, ebx

    condition:
        7 of them and filesize < 335872
}