rule win_saint_bot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.saint_bot."
        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.saint_bot"
        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 = { 7406 2bd0 8911 eb03 }
            // n = 4, score = 100
            //   7406                 | je                  8
            //   2bd0                 | sub                 edx, eax
            //   8911                 | mov                 dword ptr [ecx], edx
            //   eb03                 | jmp                 5

        $sequence_1 = { 50 e8???????? 56 8d8574e0ffff 6a00 50 e8???????? }
            // n = 7, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   56                   | push                esi
            //   8d8574e0ffff         | lea                 eax, [ebp - 0x1f8c]
            //   6a00                 | push                0
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_2 = { 7429 8bc2 0fb7547108 6685d2 7415 81e2ff0f0000 8bc3 }
            // n = 7, score = 100
            //   7429                 | je                  0x2b
            //   8bc2                 | mov                 eax, edx
            //   0fb7547108           | movzx               edx, word ptr [ecx + esi*2 + 8]
            //   6685d2               | test                dx, dx
            //   7415                 | je                  0x17
            //   81e2ff0f0000         | and                 edx, 0xfff
            //   8bc3                 | mov                 eax, ebx

        $sequence_3 = { 56 8d0447 50 e8???????? eb05 b857000780 5f }
            // n = 7, score = 100
            //   56                   | push                esi
            //   8d0447               | lea                 eax, [edi + eax*2]
            //   50                   | push                eax
            //   e8????????           |                     
            //   eb05                 | jmp                 7
            //   b857000780           | mov                 eax, 0x80070057
            //   5f                   | pop                 edi

        $sequence_4 = { ff75f8 ffd6 ff75fc ffd6 ff75ec ffd6 }
            // n = 6, score = 100
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ffd6                 | call                esi
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   ffd6                 | call                esi
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   ffd6                 | call                esi

        $sequence_5 = { 0f42c1 50 ff75e8 56 ff15???????? }
            // n = 5, score = 100
            //   0f42c1               | cmovb               eax, ecx
            //   50                   | push                eax
            //   ff75e8               | push                dword ptr [ebp - 0x18]
            //   56                   | push                esi
            //   ff15????????         |                     

        $sequence_6 = { ff15???????? ebbb 55 8bec 53 56 57 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   ebbb                 | jmp                 0xffffffbd
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   53                   | push                ebx
            //   56                   | push                esi
            //   57                   | push                edi

        $sequence_7 = { 59 8d4f01 51 6a00 ff15???????? 8945f4 85c0 }
            // n = 7, score = 100
            //   59                   | pop                 ecx
            //   8d4f01               | lea                 ecx, [edi + 1]
            //   51                   | push                ecx
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   85c0                 | test                eax, eax

        $sequence_8 = { 741a 837dfc00 7414 53 56 ffd7 }
            // n = 6, score = 100
            //   741a                 | je                  0x1c
            //   837dfc00             | cmp                 dword ptr [ebp - 4], 0
            //   7414                 | je                  0x16
            //   53                   | push                ebx
            //   56                   | push                esi
            //   ffd7                 | call                edi

        $sequence_9 = { 33c0 eb1d 56 e8???????? 59 8bc8 c1e802 }
            // n = 7, score = 100
            //   33c0                 | xor                 eax, eax
            //   eb1d                 | jmp                 0x1f
            //   56                   | push                esi
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   8bc8                 | mov                 ecx, eax
            //   c1e802               | shr                 eax, 2

    condition:
        7 of them and filesize < 93184
}