rule win_solarbot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.solarbot."
        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.solarbot"
        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 = { 7e71 8b8524f8ffff 40 0fb600 83f804 7d62 }
            // n = 6, score = 300
            //   7e71                 | jle                 0x73
            //   8b8524f8ffff         | mov                 eax, dword ptr [ebp - 0x7dc]
            //   40                   | inc                 eax
            //   0fb600               | movzx               eax, byte ptr [eax]
            //   83f804               | cmp                 eax, 4
            //   7d62                 | jge                 0x64

        $sequence_1 = { 8b5514 c745c800000000 c745e400000000 c745e000000000 c745f000000000 c745f400000000 8d4df0 }
            // n = 7, score = 300
            //   8b5514               | mov                 edx, dword ptr [ebp + 0x14]
            //   c745c800000000       | mov                 dword ptr [ebp - 0x38], 0
            //   c745e400000000       | mov                 dword ptr [ebp - 0x1c], 0
            //   c745e000000000       | mov                 dword ptr [ebp - 0x20], 0
            //   c745f000000000       | mov                 dword ptr [ebp - 0x10], 0
            //   c745f400000000       | mov                 dword ptr [ebp - 0xc], 0
            //   8d4df0               | lea                 ecx, [ebp - 0x10]

        $sequence_2 = { 8945f8 8b450c 8945f0 8b5d10 c745f400000000 b800000000 }
            // n = 6, score = 300
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   8b5d10               | mov                 ebx, dword ptr [ebp + 0x10]
            //   c745f400000000       | mov                 dword ptr [ebp - 0xc], 0
            //   b800000000           | mov                 eax, 0

        $sequence_3 = { 85c0 7626 8b45f4 83f801 751e }
            // n = 5, score = 300
            //   85c0                 | test                eax, eax
            //   7626                 | jbe                 0x28
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   83f801               | cmp                 eax, 1
            //   751e                 | jne                 0x20

        $sequence_4 = { 0f8690010000 8975fc c745e800000000 c745ec00000000 }
            // n = 4, score = 300
            //   0f8690010000         | jbe                 0x196
            //   8975fc               | mov                 dword ptr [ebp - 4], esi
            //   c745e800000000       | mov                 dword ptr [ebp - 0x18], 0
            //   c745ec00000000       | mov                 dword ptr [ebp - 0x14], 0

        $sequence_5 = { 81ec14040000 899decfbffff 89b5f0fbffff 89bdf4fbffff 8b5d08 }
            // n = 5, score = 300
            //   81ec14040000         | sub                 esp, 0x414
            //   899decfbffff         | mov                 dword ptr [ebp - 0x414], ebx
            //   89b5f0fbffff         | mov                 dword ptr [ebp - 0x410], esi
            //   89bdf4fbffff         | mov                 dword ptr [ebp - 0x40c], edi
            //   8b5d08               | mov                 ebx, dword ptr [ebp + 8]

        $sequence_6 = { 8b7510 8b4514 8945f0 8b4d18 b800000000 c745f800000000 c745f400000000 }
            // n = 7, score = 300
            //   8b7510               | mov                 esi, dword ptr [ebp + 0x10]
            //   8b4514               | mov                 eax, dword ptr [ebp + 0x14]
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   8b4d18               | mov                 ecx, dword ptr [ebp + 0x18]
            //   b800000000           | mov                 eax, 0
            //   c745f800000000       | mov                 dword ptr [ebp - 8], 0
            //   c745f400000000       | mov                 dword ptr [ebp - 0xc], 0

        $sequence_7 = { 8955f0 c745f400000000 c745f800000000 8945fc ff75fc e8???????? 89c3 }
            // n = 7, score = 300
            //   8955f0               | mov                 dword ptr [ebp - 0x10], edx
            //   c745f400000000       | mov                 dword ptr [ebp - 0xc], 0
            //   c745f800000000       | mov                 dword ptr [ebp - 8], 0
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   e8????????           |                     
            //   89c3                 | mov                 ebx, eax

        $sequence_8 = { 50 e8???????? 8945e8 85c0 0f847c020000 6a00 }
            // n = 6, score = 300
            //   50                   | push                eax
            //   e8????????           |                     
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax
            //   85c0                 | test                eax, eax
            //   0f847c020000         | je                  0x282
            //   6a00                 | push                0

        $sequence_9 = { 85c0 0f8475000000 6a00 ff75f8 ff7508 ff75fc 6aff }
            // n = 7, score = 300
            //   85c0                 | test                eax, eax
            //   0f8475000000         | je                  0x7b
            //   6a00                 | push                0
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ff7508               | push                dword ptr [ebp + 8]
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   6aff                 | push                -1

    condition:
        7 of them and filesize < 204800
}