rule win_unidentified_116_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.unidentified_116."
        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_116"
        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 = { 8b30 e8???????? 49 8bce 8b18 ff15???????? e8???????? }
            // n = 7, score = 100
            //   8b30                 | mov                 esi, dword ptr [eax]
            //   e8????????           |                     
            //   49                   | dec                 ecx
            //   8bce                 | mov                 ecx, esi
            //   8b18                 | mov                 ebx, dword ptr [eax]
            //   ff15????????         |                     
            //   e8????????           |                     

        $sequence_1 = { 8bd3 8bcf ffd6 eb0b 48 8bd3 8bcf }
            // n = 7, score = 100
            //   8bd3                 | mov                 edx, ebx
            //   8bcf                 | mov                 ecx, edi
            //   ffd6                 | call                esi
            //   eb0b                 | jmp                 0xd
            //   48                   | dec                 eax
            //   8bd3                 | mov                 edx, ebx
            //   8bcf                 | mov                 ecx, edi

        $sequence_2 = { 8d15fadcfbff 48 89442420 e8???????? 48 8d1511ddfbff 660f6e1d???????? }
            // n = 7, score = 100
            //   8d15fadcfbff         | lea                 edx, [0xfffbdcfa]
            //   48                   | dec                 eax
            //   89442420             | mov                 dword ptr [esp + 0x20], eax
            //   e8????????           |                     
            //   48                   | dec                 eax
            //   8d1511ddfbff         | lea                 edx, [0xfffbdd11]
            //   660f6e1d????????     |                     

        $sequence_3 = { 8bc8 48 83c428 e9???????? 49 8bc9 e8???????? }
            // n = 7, score = 100
            //   8bc8                 | mov                 ecx, eax
            //   48                   | dec                 eax
            //   83c428               | add                 esp, 0x28
            //   e9????????           |                     
            //   49                   | dec                 ecx
            //   8bc9                 | mov                 ecx, ecx
            //   e8????????           |                     

        $sequence_4 = { e8???????? 49 03ff 8d04f500000000 4c 8b7c2448 48 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   49                   | dec                 ecx
            //   03ff                 | add                 edi, edi
            //   8d04f500000000       | lea                 eax, [esi*8]
            //   4c                   | dec                 esp
            //   8b7c2448             | mov                 edi, dword ptr [esp + 0x48]
            //   48                   | dec                 eax

        $sequence_5 = { b901000000 e8???????? 48 8bf8 48 85c0 7509 }
            // n = 7, score = 100
            //   b901000000           | mov                 ecx, 1
            //   e8????????           |                     
            //   48                   | dec                 eax
            //   8bf8                 | mov                 edi, eax
            //   48                   | dec                 eax
            //   85c0                 | test                eax, eax
            //   7509                 | jne                 0xb

        $sequence_6 = { e9???????? 41 8d45ff 41 bb20000000 44 8b548704 }
            // n = 7, score = 100
            //   e9????????           |                     
            //   41                   | inc                 ecx
            //   8d45ff               | lea                 eax, [ebp - 1]
            //   41                   | inc                 ecx
            //   bb20000000           | mov                 ebx, 0x20
            //   44                   | inc                 esp
            //   8b548704             | mov                 edx, dword ptr [edi + eax*4 + 4]

        $sequence_7 = { 8d4b40 4c 897c2448 48 03c8 4c }
            // n = 6, score = 100
            //   8d4b40               | lea                 ecx, [ebx + 0x40]
            //   4c                   | dec                 esp
            //   897c2448             | mov                 dword ptr [esp + 0x48], edi
            //   48                   | dec                 eax
            //   03c8                 | add                 ecx, eax
            //   4c                   | dec                 esp

        $sequence_8 = { c78424d000000000000400 6648 0f6ef8 48 8b4530 48 334510 }
            // n = 7, score = 100
            //   c78424d000000000000400     | mov    dword ptr [esp + 0xd0], 0x40000
            //   6648                 | dec                 ax
            //   0f6ef8               | movd                mm7, eax
            //   48                   | dec                 eax
            //   8b4530               | mov                 eax, dword ptr [ebp + 0x30]
            //   48                   | dec                 eax
            //   334510               | xor                 eax, dword ptr [ebp + 0x10]

        $sequence_9 = { c78318010000ffffffff 48 8b4778 48 85c0 7407 33d2 }
            // n = 7, score = 100
            //   c78318010000ffffffff     | mov    dword ptr [ebx + 0x118], 0xffffffff
            //   48                   | dec                 eax
            //   8b4778               | mov                 eax, dword ptr [edi + 0x78]
            //   48                   | dec                 eax
            //   85c0                 | test                eax, eax
            //   7407                 | je                  9
            //   33d2                 | xor                 edx, edx

    condition:
        7 of them and filesize < 1040384
}