rule win_floxif_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.floxif."
        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.floxif"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { e8???????? 8945d0 837dd0ff 7514 c645b800 8d4d08 e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8945d0               | mov                 dword ptr [ebp - 0x30], eax
            //   837dd0ff             | cmp                 dword ptr [ebp - 0x30], -1
            //   7514                 | jne                 0x16
            //   c645b800             | mov                 byte ptr [ebp - 0x48], 0
            //   8d4d08               | lea                 ecx, [ebp + 8]
            //   e8????????           |                     

        $sequence_1 = { 2b4d08 c1f904 8b550c 2bd1 52 }
            // n = 5, score = 100
            //   2b4d08               | sub                 ecx, dword ptr [ebp + 8]
            //   c1f904               | sar                 ecx, 4
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   2bd1                 | sub                 edx, ecx
            //   52                   | push                edx

        $sequence_2 = { 8b4d08 c6410301 8b4508 83c004 5f 5e 5b }
            // n = 7, score = 100
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   c6410301             | mov                 byte ptr [ecx + 3], 1
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   83c004               | add                 eax, 4
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx

        $sequence_3 = { e8???????? 8a4584 5f 5e }
            // n = 4, score = 100
            //   e8????????           |                     
            //   8a4584               | mov                 al, byte ptr [ebp - 0x7c]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_4 = { 8b45fc 50 ff15???????? 85c0 7404 b001 eb04 }
            // n = 7, score = 100
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7404                 | je                  6
            //   b001                 | mov                 al, 1
            //   eb04                 | jmp                 6

        $sequence_5 = { e8???????? 68???????? e8???????? 83c404 e8???????? a2???????? c745f800000000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   68????????           |                     
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   e8????????           |                     
            //   a2????????           |                     
            //   c745f800000000       | mov                 dword ptr [ebp - 8], 0

        $sequence_6 = { a0???????? 85c0 7522 8b8d70feffff 51 8d4dc4 e8???????? }
            // n = 7, score = 100
            //   a0????????           |                     
            //   85c0                 | test                eax, eax
            //   7522                 | jne                 0x24
            //   8b8d70feffff         | mov                 ecx, dword ptr [ebp - 0x190]
            //   51                   | push                ecx
            //   8d4dc4               | lea                 ecx, [ebp - 0x3c]
            //   e8????????           |                     

        $sequence_7 = { e8???????? 8d4d08 e8???????? 8be5 5d c3 55 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d4d08               | lea                 ecx, [ebp + 8]
            //   e8????????           |                     
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   55                   | push                ebp

        $sequence_8 = { e8???????? 83ec10 8bf4 6a04 83ec10 8bcc 8d55f0 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83ec10               | sub                 esp, 0x10
            //   8bf4                 | mov                 esi, esp
            //   6a04                 | push                4
            //   83ec10               | sub                 esp, 0x10
            //   8bcc                 | mov                 ecx, esp
            //   8d55f0               | lea                 edx, [ebp - 0x10]

        $sequence_9 = { c645ce13 c645cf0e c645d06b 8d45c0 50 e8???????? 83c404 }
            // n = 7, score = 100
            //   c645ce13             | mov                 byte ptr [ebp - 0x32], 0x13
            //   c645cf0e             | mov                 byte ptr [ebp - 0x31], 0xe
            //   c645d06b             | mov                 byte ptr [ebp - 0x30], 0x6b
            //   8d45c0               | lea                 eax, [ebp - 0x40]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

    condition:
        7 of them and filesize < 352256
}