rule win_sathurbot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.sathurbot."
        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.sathurbot"
        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 = { 890424 c7442404???????? ff15???????? 83ec10 85c0 0f94c0 837c242400 }
            // n = 7, score = 100
            //   890424               | mov                 dword ptr [esp], eax
            //   c7442404????????     |                     
            //   ff15????????         |                     
            //   83ec10               | sub                 esp, 0x10
            //   85c0                 | test                eax, eax
            //   0f94c0               | sete                al
            //   837c242400           | cmp                 dword ptr [esp + 0x24], 0

        $sequence_1 = { f6c101 b8e4a22b29 b93cdfaf6e 0f45c1 e9???????? a1???????? 8d48ff }
            // n = 7, score = 100
            //   f6c101               | test                cl, 1
            //   b8e4a22b29           | mov                 eax, 0x292ba2e4
            //   b93cdfaf6e           | mov                 ecx, 0x6eafdf3c
            //   0f45c1               | cmovne              eax, ecx
            //   e9????????           |                     
            //   a1????????           |                     
            //   8d48ff               | lea                 ecx, [eax - 1]

        $sequence_2 = { f6c701 bb94f5b5ea bf8b98173b 0f45df e9???????? 81ff54cf23f0 89fb }
            // n = 7, score = 100
            //   f6c701               | test                bh, 1
            //   bb94f5b5ea           | mov                 ebx, 0xeab5f594
            //   bf8b98173b           | mov                 edi, 0x3b17988b
            //   0f45df               | cmovne              ebx, edi
            //   e9????????           |                     
            //   81ff54cf23f0         | cmp                 edi, 0xf023cf54
            //   89fb                 | mov                 ebx, edi

        $sequence_3 = { bbdf9a40cb bf07720b13 ba8836551d 0f85c1f7ffff 8b4e2c 83ec08 c744240400000000 }
            // n = 7, score = 100
            //   bbdf9a40cb           | mov                 ebx, 0xcb409adf
            //   bf07720b13           | mov                 edi, 0x130b7207
            //   ba8836551d           | mov                 edx, 0x1d553688
            //   0f85c1f7ffff         | jne                 0xfffff7c7
            //   8b4e2c               | mov                 ecx, dword ptr [esi + 0x2c]
            //   83ec08               | sub                 esp, 8
            //   c744240400000000     | mov                 dword ptr [esp + 4], 0

        $sequence_4 = { f6c101 0f94c0 813d????????0a000000 0f9cc1 08c1 b87737df95 b9bc0dd317 }
            // n = 7, score = 100
            //   f6c101               | test                cl, 1
            //   0f94c0               | sete                al
            //   813d????????0a000000     |     
            //   0f9cc1               | setl                cl
            //   08c1                 | or                  cl, al
            //   b87737df95           | mov                 eax, 0x95df3777
            //   b9bc0dd317           | mov                 ecx, 0x17d30dbc

        $sequence_5 = { eb9a 8a45ee 8a4def 08c1 f6c101 b85d04e70e b9146a4ff8 }
            // n = 7, score = 100
            //   eb9a                 | jmp                 0xffffff9c
            //   8a45ee               | mov                 al, byte ptr [ebp - 0x12]
            //   8a4def               | mov                 cl, byte ptr [ebp - 0x11]
            //   08c1                 | or                  cl, al
            //   f6c101               | test                cl, 1
            //   b85d04e70e           | mov                 eax, 0xee7045d
            //   b9146a4ff8           | mov                 ecx, 0xf84f6a14

        $sequence_6 = { e9???????? 8a45e6 84c0 b8e109b7d8 b9259f9ef5 e9???????? 8b450c }
            // n = 7, score = 100
            //   e9????????           |                     
            //   8a45e6               | mov                 al, byte ptr [ebp - 0x1a]
            //   84c0                 | test                al, al
            //   b8e109b7d8           | mov                 eax, 0xd8b709e1
            //   b9259f9ef5           | mov                 ecx, 0xf59e9f25
            //   e9????????           |                     
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]

        $sequence_7 = { f6c101 0f94c0 813d????????0a000000 0f9cc1 08c1 b84f581604 b9df112848 }
            // n = 7, score = 100
            //   f6c101               | test                cl, 1
            //   0f94c0               | sete                al
            //   813d????????0a000000     |     
            //   0f9cc1               | setl                cl
            //   08c1                 | or                  cl, al
            //   b84f581604           | mov                 eax, 0x416584f
            //   b9df112848           | mov                 ecx, 0x482811df

        $sequence_8 = { f6c101 0f94c0 813d????????0a000000 0f9cc1 08c1 b87a79be99 b9330fabc2 }
            // n = 7, score = 100
            //   f6c101               | test                cl, 1
            //   0f94c0               | sete                al
            //   813d????????0a000000     |     
            //   0f9cc1               | setl                cl
            //   08c1                 | or                  cl, al
            //   b87a79be99           | mov                 eax, 0x99be797a
            //   b9330fabc2           | mov                 ecx, 0xc2ab0f33

        $sequence_9 = { 8d4818 8b4648 50 e8???????? 83ec04 8b4624 890424 }
            // n = 7, score = 100
            //   8d4818               | lea                 ecx, [eax + 0x18]
            //   8b4648               | mov                 eax, dword ptr [esi + 0x48]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83ec04               | sub                 esp, 4
            //   8b4624               | mov                 eax, dword ptr [esi + 0x24]
            //   890424               | mov                 dword ptr [esp], eax

    condition:
        7 of them and filesize < 2727936
}