rule win_makadocs_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.makadocs."
        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.makadocs"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 47 46 803f00 7593 c60600 8b03 8b48f8 }
            // n = 7, score = 100
            //   47                   | inc                 edi
            //   46                   | inc                 esi
            //   803f00               | cmp                 byte ptr [edi], 0
            //   7593                 | jne                 0xffffff95
            //   c60600               | mov                 byte ptr [esi], 0
            //   8b03                 | mov                 eax, dword ptr [ebx]
            //   8b48f8               | mov                 ecx, dword ptr [eax - 8]

        $sequence_1 = { 807c241600 0f846ffbffff 807c241700 7412 8b5c2424 8b84249c000000 e8???????? }
            // n = 7, score = 100
            //   807c241600           | cmp                 byte ptr [esp + 0x16], 0
            //   0f846ffbffff         | je                  0xfffffb75
            //   807c241700           | cmp                 byte ptr [esp + 0x17], 0
            //   7412                 | je                  0x14
            //   8b5c2424             | mov                 ebx, dword ptr [esp + 0x24]
            //   8b84249c000000       | mov                 eax, dword ptr [esp + 0x9c]
            //   e8????????           |                     

        $sequence_2 = { 8965f0 6a18 e8???????? 8bf0 83c404 8975ec c745fc01000000 }
            // n = 7, score = 100
            //   8965f0               | mov                 dword ptr [ebp - 0x10], esp
            //   6a18                 | push                0x18
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   83c404               | add                 esp, 4
            //   8975ec               | mov                 dword ptr [ebp - 0x14], esi
            //   c745fc01000000       | mov                 dword ptr [ebp - 4], 1

        $sequence_3 = { 89442452 6689442456 8944243a 8944243e 89442442 6689442446 6689542428 }
            // n = 7, score = 100
            //   89442452             | mov                 dword ptr [esp + 0x52], eax
            //   6689442456           | mov                 word ptr [esp + 0x56], ax
            //   8944243a             | mov                 dword ptr [esp + 0x3a], eax
            //   8944243e             | mov                 dword ptr [esp + 0x3e], eax
            //   89442442             | mov                 dword ptr [esp + 0x42], eax
            //   6689442446           | mov                 word ptr [esp + 0x46], ax
            //   6689542428           | mov                 word ptr [esp + 0x28], dx

        $sequence_4 = { 83ec0c 53 8b1d???????? 56 57 8b3d???????? 8d442410 }
            // n = 7, score = 100
            //   83ec0c               | sub                 esp, 0xc
            //   53                   | push                ebx
            //   8b1d????????         |                     
            //   56                   | push                esi
            //   57                   | push                edi
            //   8b3d????????         |                     
            //   8d442410             | lea                 eax, [esp + 0x10]

        $sequence_5 = { 50 e8???????? 83c408 85c0 7403 2b06 c3 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax
            //   7403                 | je                  5
            //   2b06                 | sub                 eax, dword ptr [esi]
            //   c3                   | ret                 

        $sequence_6 = { 896c2424 6a00 c644243403 8b44243c 8b58f4 8b3d???????? 6a00 }
            // n = 7, score = 100
            //   896c2424             | mov                 dword ptr [esp + 0x24], ebp
            //   6a00                 | push                0
            //   c644243403           | mov                 byte ptr [esp + 0x34], 3
            //   8b44243c             | mov                 eax, dword ptr [esp + 0x3c]
            //   8b58f4               | mov                 ebx, dword ptr [eax - 0xc]
            //   8b3d????????         |                     
            //   6a00                 | push                0

        $sequence_7 = { b31a 50 889c24b4000000 e8???????? 83c410 c68424a40000001b }
            // n = 6, score = 100
            //   b31a                 | mov                 bl, 0x1a
            //   50                   | push                eax
            //   889c24b4000000       | mov                 byte ptr [esp + 0xb4], bl
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   c68424a40000001b     | mov                 byte ptr [esp + 0xa4], 0x1b

        $sequence_8 = { 8d4c2418 68???????? 51 e8???????? 83c408 8d5c2410 c644243003 }
            // n = 7, score = 100
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   68????????           |                     
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   8d5c2410             | lea                 ebx, [esp + 0x10]
            //   c644243003           | mov                 byte ptr [esp + 0x30], 3

        $sequence_9 = { 3c09 0fb6c0 7605 83c037 eb03 83c030 8806 }
            // n = 7, score = 100
            //   3c09                 | cmp                 al, 9
            //   0fb6c0               | movzx               eax, al
            //   7605                 | jbe                 7
            //   83c037               | add                 eax, 0x37
            //   eb03                 | jmp                 5
            //   83c030               | add                 eax, 0x30
            //   8806                 | mov                 byte ptr [esi], al

    condition:
        7 of them and filesize < 344064
}