rule win_mutabaha_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.mutabaha."
        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.mutabaha"
        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 = { 50 8d4da8 e8???????? 837dbc08 8d45a8 8d8d78ffffff 0f4345a8 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   8d4da8               | lea                 ecx, [ebp - 0x58]
            //   e8????????           |                     
            //   837dbc08             | cmp                 dword ptr [ebp - 0x44], 8
            //   8d45a8               | lea                 eax, [ebp - 0x58]
            //   8d8d78ffffff         | lea                 ecx, [ebp - 0x88]
            //   0f4345a8             | cmovae              eax, dword ptr [ebp - 0x58]

        $sequence_1 = { 50 e8???????? 83f8ff 743b 8b7dd4 90 8b5f10 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   83f8ff               | cmp                 eax, -1
            //   743b                 | je                  0x3d
            //   8b7dd4               | mov                 edi, dword ptr [ebp - 0x2c]
            //   90                   | nop                 
            //   8b5f10               | mov                 ebx, dword ptr [edi + 0x10]

        $sequence_2 = { 8954c804 8b06 031cc8 1354c804 41 3b4e14 72e7 }
            // n = 7, score = 100
            //   8954c804             | mov                 dword ptr [eax + ecx*8 + 4], edx
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   031cc8               | add                 ebx, dword ptr [eax + ecx*8]
            //   1354c804             | adc                 edx, dword ptr [eax + ecx*8 + 4]
            //   41                   | inc                 ecx
            //   3b4e14               | cmp                 ecx, dword ptr [esi + 0x14]
            //   72e7                 | jb                  0xffffffe9

        $sequence_3 = { 50 e8???????? 83c410 ba00020000 68feffff7f ff35???????? 51 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   ba00020000           | mov                 edx, 0x200
            //   68feffff7f           | push                0x7ffffffe
            //   ff35????????         |                     
            //   51                   | push                ecx

        $sequence_4 = { 8bc8 e8???????? 85c0 7812 8b45f0 5f 5e }
            // n = 7, score = 100
            //   8bc8                 | mov                 ecx, eax
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7812                 | js                  0x14
            //   8b45f0               | mov                 eax, dword ptr [ebp - 0x10]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_5 = { 3b45ec 75cb 85d2 75c7 85ff 7c62 7f04 }
            // n = 7, score = 100
            //   3b45ec               | cmp                 eax, dword ptr [ebp - 0x14]
            //   75cb                 | jne                 0xffffffcd
            //   85d2                 | test                edx, edx
            //   75c7                 | jne                 0xffffffc9
            //   85ff                 | test                edi, edi
            //   7c62                 | jl                  0x64
            //   7f04                 | jg                  6

        $sequence_6 = { e8???????? c7465400000000 8bc6 8b4df4 64890d00000000 59 5e }
            // n = 7, score = 100
            //   e8????????           |                     
            //   c7465400000000       | mov                 dword ptr [esi + 0x54], 0
            //   8bc6                 | mov                 eax, esi
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   64890d00000000       | mov                 dword ptr fs:[0], ecx
            //   59                   | pop                 ecx
            //   5e                   | pop                 esi

        $sequence_7 = { 83c414 8d85f0fbffff 68???????? ffb5f0e5ffff 68???????? 6800020000 50 }
            // n = 7, score = 100
            //   83c414               | add                 esp, 0x14
            //   8d85f0fbffff         | lea                 eax, [ebp - 0x410]
            //   68????????           |                     
            //   ffb5f0e5ffff         | push                dword ptr [ebp - 0x1a10]
            //   68????????           |                     
            //   6800020000           | push                0x200
            //   50                   | push                eax

        $sequence_8 = { 894de8 8b0490 8b55e0 3bc6 7324 8bc8 c1e105 }
            // n = 7, score = 100
            //   894de8               | mov                 dword ptr [ebp - 0x18], ecx
            //   8b0490               | mov                 eax, dword ptr [eax + edx*4]
            //   8b55e0               | mov                 edx, dword ptr [ebp - 0x20]
            //   3bc6                 | cmp                 eax, esi
            //   7324                 | jae                 0x26
            //   8bc8                 | mov                 ecx, eax
            //   c1e105               | shl                 ecx, 5

        $sequence_9 = { 668945cc e8???????? 8d55cc c645fc01 8d4db4 e8???????? 68???????? }
            // n = 7, score = 100
            //   668945cc             | mov                 word ptr [ebp - 0x34], ax
            //   e8????????           |                     
            //   8d55cc               | lea                 edx, [ebp - 0x34]
            //   c645fc01             | mov                 byte ptr [ebp - 4], 1
            //   8d4db4               | lea                 ecx, [ebp - 0x4c]
            //   e8????????           |                     
            //   68????????           |                     

    condition:
        7 of them and filesize < 1220608
}