rule win_floki_bot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "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 = { 395df8 741d 3bfb 7419 }
            // n = 4, score = 1100
            //   395df8               | cmp                 dword ptr [ebp - 8], ebx
            //   741d                 | je                  0x1f
            //   3bfb                 | cmp                 edi, ebx
            //   7419                 | je                  0x1b

        $sequence_1 = { 8b45f8 394508 7504 c645ff01 8a45ff 5f 5b }
            // n = 7, score = 1100
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   394508               | cmp                 dword ptr [ebp + 8], eax
            //   7504                 | jne                 6
            //   c645ff01             | mov                 byte ptr [ebp - 1], 1
            //   8a45ff               | mov                 al, byte ptr [ebp - 1]
            //   5f                   | pop                 edi
            //   5b                   | pop                 ebx

        $sequence_2 = { 6a64 5b ff742414 8d44241c 50 56 57 }
            // n = 7, score = 1100
            //   6a64                 | push                0x64
            //   5b                   | pop                 ebx
            //   ff742414             | push                dword ptr [esp + 0x14]
            //   8d44241c             | lea                 eax, [esp + 0x1c]
            //   50                   | push                eax
            //   56                   | push                esi
            //   57                   | push                edi

        $sequence_3 = { 8b7f1c 85ff 75cf ff7508 ff15???????? }
            // n = 5, score = 1100
            //   8b7f1c               | mov                 edi, dword ptr [edi + 0x1c]
            //   85ff                 | test                edi, edi
            //   75cf                 | jne                 0xffffffd1
            //   ff7508               | push                dword ptr [ebp + 8]
            //   ff15????????         |                     

        $sequence_4 = { c21000 55 8bec 83ec1c 53 56 0fb6c9 }
            // n = 7, score = 1100
            //   c21000               | ret                 0x10
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83ec1c               | sub                 esp, 0x1c
            //   53                   | push                ebx
            //   56                   | push                esi
            //   0fb6c9               | movzx               ecx, cl

        $sequence_5 = { 0f8452010000 0fb6c0 0fb6cb 6603c1 0fb6ca 6603c1 8b4d08 }
            // n = 7, score = 1100
            //   0f8452010000         | je                  0x158
            //   0fb6c0               | movzx               eax, al
            //   0fb6cb               | movzx               ecx, bl
            //   6603c1               | add                 ax, cx
            //   0fb6ca               | movzx               ecx, dl
            //   6603c1               | add                 ax, cx
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]

        $sequence_6 = { 3b442410 0f8391000000 8b44842c 3b442424 7506 8b442420 eb0a }
            // n = 7, score = 1100
            //   3b442410             | cmp                 eax, dword ptr [esp + 0x10]
            //   0f8391000000         | jae                 0x97
            //   8b44842c             | mov                 eax, dword ptr [esp + eax*4 + 0x2c]
            //   3b442424             | cmp                 eax, dword ptr [esp + 0x24]
            //   7506                 | jne                 8
            //   8b442420             | mov                 eax, dword ptr [esp + 0x20]
            //   eb0a                 | jmp                 0xc

        $sequence_7 = { eb0b 57 ff15???????? c645ff01 8b75f0 }
            // n = 5, score = 1100
            //   eb0b                 | jmp                 0xd
            //   57                   | push                edi
            //   ff15????????         |                     
            //   c645ff01             | mov                 byte ptr [ebp - 1], 1
            //   8b75f0               | mov                 esi, dword ptr [ebp - 0x10]

        $sequence_8 = { 8b4dfc 8d75f0 e8???????? 8b75fc 8ad8 e8???????? 84db }
            // n = 7, score = 1100
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   8d75f0               | lea                 esi, [ebp - 0x10]
            //   e8????????           |                     
            //   8b75fc               | mov                 esi, dword ptr [ebp - 4]
            //   8ad8                 | mov                 bl, al
            //   e8????????           |                     
            //   84db                 | test                bl, bl

        $sequence_9 = { 56 8bf0 6807b20100 b83f420f00 e8???????? 8b4d08 03ce }
            // n = 7, score = 1100
            //   56                   | push                esi
            //   8bf0                 | mov                 esi, eax
            //   6807b20100           | push                0x1b207
            //   b83f420f00           | mov                 eax, 0xf423f
            //   e8????????           |                     
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   03ce                 | add                 ecx, esi

    condition:
        7 of them and filesize < 286720
}