rule win_minibus_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.minibus."
        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.minibus"
        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 = { 8906 c74604???????? 85c0 0f84d8feffff 8b0d???????? 3bc9 0f8579000000 }
            // n = 7, score = 300
            //   8906                 | mov                 dword ptr [esi], eax
            //   c74604????????       |                     
            //   85c0                 | test                eax, eax
            //   0f84d8feffff         | je                  0xfffffede
            //   8b0d????????         |                     
            //   3bc9                 | cmp                 ecx, ecx
            //   0f8579000000         | jne                 0x7f

        $sequence_1 = { 8b4614 3bc8 772e 8bde 83f808 7202 8b1e }
            // n = 7, score = 300
            //   8b4614               | mov                 eax, dword ptr [esi + 0x14]
            //   3bc8                 | cmp                 ecx, eax
            //   772e                 | ja                  0x30
            //   8bde                 | mov                 ebx, esi
            //   83f808               | cmp                 eax, 8
            //   7202                 | jb                  4
            //   8b1e                 | mov                 ebx, dword ptr [esi]

        $sequence_2 = { 0f82ce000000 837de408 8bd6 7202 }
            // n = 4, score = 300
            //   0f82ce000000         | jb                  0xd4
            //   837de408             | cmp                 dword ptr [ebp - 0x1c], 8
            //   8bd6                 | mov                 edx, esi
            //   7202                 | jb                  4

        $sequence_3 = { 83c302 83ea01 75e5 8b45f0 }
            // n = 4, score = 300
            //   83c302               | add                 ebx, 2
            //   83ea01               | sub                 edx, 1
            //   75e5                 | jne                 0xffffffe7
            //   8b45f0               | mov                 eax, dword ptr [ebp - 0x10]

        $sequence_4 = { 894610 8bc6 8975b4 7205 8b06 8945b4 57 }
            // n = 7, score = 300
            //   894610               | mov                 dword ptr [esi + 0x10], eax
            //   8bc6                 | mov                 eax, esi
            //   8975b4               | mov                 dword ptr [ebp - 0x4c], esi
            //   7205                 | jb                  7
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   8945b4               | mov                 dword ptr [ebp - 0x4c], eax
            //   57                   | push                edi

        $sequence_5 = { 722e 8b55d8 41 8bc2 }
            // n = 4, score = 300
            //   722e                 | jb                  0x30
            //   8b55d8               | mov                 edx, dword ptr [ebp - 0x28]
            //   41                   | inc                 ecx
            //   8bc2                 | mov                 eax, edx

        $sequence_6 = { 897de4 895de8 85f6 7421 83c8ff f00fc14604 7517 }
            // n = 7, score = 300
            //   897de4               | mov                 dword ptr [ebp - 0x1c], edi
            //   895de8               | mov                 dword ptr [ebp - 0x18], ebx
            //   85f6                 | test                esi, esi
            //   7421                 | je                  0x23
            //   83c8ff               | or                  eax, 0xffffffff
            //   f00fc14604           | lock xadd           dword ptr [esi + 4], eax
            //   7517                 | jne                 0x19

        $sequence_7 = { 8d45d8 50 52 e8???????? 894608 85c0 7543 }
            // n = 7, score = 300
            //   8d45d8               | lea                 eax, [ebp - 0x28]
            //   50                   | push                eax
            //   52                   | push                edx
            //   e8????????           |                     
            //   894608               | mov                 dword ptr [esi + 8], eax
            //   85c0                 | test                eax, eax
            //   7543                 | jne                 0x45

        $sequence_8 = { c70700000000 c7471000000000 c7471400000000 83781410 }
            // n = 4, score = 300
            //   c70700000000         | mov                 dword ptr [edi], 0
            //   c7471000000000       | mov                 dword ptr [edi + 0x10], 0
            //   c7471400000000       | mov                 dword ptr [edi + 0x14], 0
            //   83781410             | cmp                 dword ptr [eax + 0x14], 0x10

        $sequence_9 = { 8b06 8945b4 57 52 03c1 50 e8???????? }
            // n = 7, score = 300
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   8945b4               | mov                 dword ptr [ebp - 0x4c], eax
            //   57                   | push                edi
            //   52                   | push                edx
            //   03c1                 | add                 eax, ecx
            //   50                   | push                eax
            //   e8????????           |                     

    condition:
        7 of them and filesize < 324608
}