rule win_floki_bot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.floki_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.floki_bot"
        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 = { 57 ff7508 ff15???????? 83651000 83650c00 56 8d4518 }
            // n = 7, score = 1100
            //   57                   | push                edi
            //   ff7508               | push                dword ptr [ebp + 8]
            //   ff15????????         |                     
            //   83651000             | and                 dword ptr [ebp + 0x10], 0
            //   83650c00             | and                 dword ptr [ebp + 0xc], 0
            //   56                   | push                esi
            //   8d4518               | lea                 eax, [ebp + 0x18]

        $sequence_1 = { 3bfb 0f842e010000 2b3d???????? 8d85d8fcffff }
            // n = 4, score = 1100
            //   3bfb                 | cmp                 edi, ebx
            //   0f842e010000         | je                  0x134
            //   2b3d????????         |                     
            //   8d85d8fcffff         | lea                 eax, [ebp - 0x328]

        $sequence_2 = { bfe9fd0000 2bc3 57 e8???????? 8b4d0c 46 }
            // n = 6, score = 1100
            //   bfe9fd0000           | mov                 edi, 0xfde9
            //   2bc3                 | sub                 eax, ebx
            //   57                   | push                edi
            //   e8????????           |                     
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   46                   | inc                 esi

        $sequence_3 = { 83651400 6a00 8d4510 50 8d4514 50 }
            // n = 6, score = 1100
            //   83651400             | and                 dword ptr [ebp + 0x14], 0
            //   6a00                 | push                0
            //   8d4510               | lea                 eax, [ebp + 0x10]
            //   50                   | push                eax
            //   8d4514               | lea                 eax, [ebp + 0x14]
            //   50                   | push                eax

        $sequence_4 = { 8d4608 50 e8???????? eb03 895e04 6a01 e8???????? }
            // n = 7, score = 1100
            //   8d4608               | lea                 eax, [esi + 8]
            //   50                   | push                eax
            //   e8????????           |                     
            //   eb03                 | jmp                 5
            //   895e04               | mov                 dword ptr [esi + 4], ebx
            //   6a01                 | push                1
            //   e8????????           |                     

        $sequence_5 = { 897014 8b4f1c 034b1c 89481c 8b4f14 83e930 51 }
            // n = 7, score = 1100
            //   897014               | mov                 dword ptr [eax + 0x14], esi
            //   8b4f1c               | mov                 ecx, dword ptr [edi + 0x1c]
            //   034b1c               | add                 ecx, dword ptr [ebx + 0x1c]
            //   89481c               | mov                 dword ptr [eax + 0x1c], ecx
            //   8b4f14               | mov                 ecx, dword ptr [edi + 0x14]
            //   83e930               | sub                 ecx, 0x30
            //   51                   | push                ecx

        $sequence_6 = { 57 6a0a 33db 5f 57 6a00 8d45f4 }
            // n = 7, score = 1100
            //   57                   | push                edi
            //   6a0a                 | push                0xa
            //   33db                 | xor                 ebx, ebx
            //   5f                   | pop                 edi
            //   57                   | push                edi
            //   6a00                 | push                0
            //   8d45f4               | lea                 eax, [ebp - 0xc]

        $sequence_7 = { 8d7108 8975f8 8945ec 8b1e 85db 0f84b3000000 }
            // n = 6, score = 1100
            //   8d7108               | lea                 esi, [ecx + 8]
            //   8975f8               | mov                 dword ptr [ebp - 8], esi
            //   8945ec               | mov                 dword ptr [ebp - 0x14], eax
            //   8b1e                 | mov                 ebx, dword ptr [esi]
            //   85db                 | test                ebx, ebx
            //   0f84b3000000         | je                  0xb9

        $sequence_8 = { 8b7510 e8???????? 8bc7 eb56 83cfff ebef 8b4510 }
            // n = 7, score = 1100
            //   8b7510               | mov                 esi, dword ptr [ebp + 0x10]
            //   e8????????           |                     
            //   8bc7                 | mov                 eax, edi
            //   eb56                 | jmp                 0x58
            //   83cfff               | or                  edi, 0xffffffff
            //   ebef                 | jmp                 0xfffffff1
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]

        $sequence_9 = { 8ac3 5b c20400 56 57 be???????? 56 }
            // n = 7, score = 1100
            //   8ac3                 | mov                 al, bl
            //   5b                   | pop                 ebx
            //   c20400               | ret                 4
            //   56                   | push                esi
            //   57                   | push                edi
            //   be????????           |                     
            //   56                   | push                esi

    condition:
        7 of them and filesize < 286720
}