rule win_global_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.global."
        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.global"
        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 = { 897ddc 8975fc 8b45e4 8b048500514300 8b4de0 f644012801 7519 }
            // n = 7, score = 100
            //   897ddc               | mov                 dword ptr [ebp - 0x24], edi
            //   8975fc               | mov                 dword ptr [ebp - 4], esi
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]
            //   8b048500514300       | mov                 eax, dword ptr [eax*4 + 0x435100]
            //   8b4de0               | mov                 ecx, dword ptr [ebp - 0x20]
            //   f644012801           | test                byte ptr [ecx + eax + 0x28], 1
            //   7519                 | jne                 0x1b

        $sequence_1 = { 33c0 8bfd f3ab 8b44240c ff742410 50 8b08 }
            // n = 7, score = 100
            //   33c0                 | xor                 eax, eax
            //   8bfd                 | mov                 edi, ebp
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   8b44240c             | mov                 eax, dword ptr [esp + 0xc]
            //   ff742410             | push                dword ptr [esp + 0x10]
            //   50                   | push                eax
            //   8b08                 | mov                 ecx, dword ptr [eax]

        $sequence_2 = { 8b8f00100000 8bc1 c1e810 0fb6c0 0fb6c9 }
            // n = 5, score = 100
            //   8b8f00100000         | mov                 ecx, dword ptr [edi + 0x1000]
            //   8bc1                 | mov                 eax, ecx
            //   c1e810               | shr                 eax, 0x10
            //   0fb6c0               | movzx               eax, al
            //   0fb6c9               | movzx               ecx, cl

        $sequence_3 = { 8955f8 43 895de4 8b049500514300 897df0 }
            // n = 5, score = 100
            //   8955f8               | mov                 dword ptr [ebp - 8], edx
            //   43                   | inc                 ebx
            //   895de4               | mov                 dword ptr [ebp - 0x1c], ebx
            //   8b049500514300       | mov                 eax, dword ptr [edx*4 + 0x435100]
            //   897df0               | mov                 dword ptr [ebp - 0x10], edi

        $sequence_4 = { 688d711ed1 56 a3???????? e8???????? 680ea3e69c 56 }
            // n = 6, score = 100
            //   688d711ed1           | push                0xd11e718d
            //   56                   | push                esi
            //   a3????????           |                     
            //   e8????????           |                     
            //   680ea3e69c           | push                0x9ce6a30e
            //   56                   | push                esi

        $sequence_5 = { 8b4c2424 85c9 7f0f 7c07 3d00005000 7706 6a05 }
            // n = 7, score = 100
            //   8b4c2424             | mov                 ecx, dword ptr [esp + 0x24]
            //   85c9                 | test                ecx, ecx
            //   7f0f                 | jg                  0x11
            //   7c07                 | jl                  9
            //   3d00005000           | cmp                 eax, 0x500000
            //   7706                 | ja                  8
            //   6a05                 | push                5

        $sequence_6 = { 8b8486000c0000 03848e00080000 33d0 8954be2c 8b8624100000 8b8e00100000 89962c100000 }
            // n = 7, score = 100
            //   8b8486000c0000       | mov                 eax, dword ptr [esi + eax*4 + 0xc00]
            //   03848e00080000       | add                 eax, dword ptr [esi + ecx*4 + 0x800]
            //   33d0                 | xor                 edx, eax
            //   8954be2c             | mov                 dword ptr [esi + edi*4 + 0x2c], edx
            //   8b8624100000         | mov                 eax, dword ptr [esi + 0x1024]
            //   8b8e00100000         | mov                 ecx, dword ptr [esi + 0x1000]
            //   89962c100000         | mov                 dword ptr [esi + 0x102c], edx

        $sequence_7 = { 50 55 ff15???????? b910000000 8dbc2410010000 be???????? }
            // n = 6, score = 100
            //   50                   | push                eax
            //   55                   | push                ebp
            //   ff15????????         |                     
            //   b910000000           | mov                 ecx, 0x10
            //   8dbc2410010000       | lea                 edi, [esp + 0x110]
            //   be????????           |                     

        $sequence_8 = { 50 e8???????? 83c408 85c0 7411 8d44240c 50 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax
            //   7411                 | je                  0x13
            //   8d44240c             | lea                 eax, [esp + 0xc]
            //   50                   | push                eax

        $sequence_9 = { 53 8d4640 03c1 55 50 e8???????? 83c40c }
            // n = 7, score = 100
            //   53                   | push                ebx
            //   8d4640               | lea                 eax, [esi + 0x40]
            //   03c1                 | add                 eax, ecx
            //   55                   | push                ebp
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

    condition:
        7 of them and filesize < 475136
}