rule win_taleret_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.taleret."
        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.taleret"
        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 = { 761b 8b542418 8d3c32 e8???????? 8a17 }
            // n = 5, score = 100
            //   761b                 | jbe                 0x1d
            //   8b542418             | mov                 edx, dword ptr [esp + 0x18]
            //   8d3c32               | lea                 edi, [edx + esi]
            //   e8????????           |                     
            //   8a17                 | mov                 dl, byte ptr [edi]

        $sequence_1 = { 85c0 7529 ff15???????? 83f87a 0f8519050000 8b542414 }
            // n = 6, score = 100
            //   85c0                 | test                eax, eax
            //   7529                 | jne                 0x2b
            //   ff15????????         |                     
            //   83f87a               | cmp                 eax, 0x7a
            //   0f8519050000         | jne                 0x51f
            //   8b542414             | mov                 edx, dword ptr [esp + 0x14]

        $sequence_2 = { 50 e8???????? 83c404 837b080f 7f23 }
            // n = 5, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   837b080f             | cmp                 dword ptr [ebx + 8], 0xf
            //   7f23                 | jg                  0x25

        $sequence_3 = { 0fbec9 7c0b 83f840 7d06 8a440444 }
            // n = 5, score = 100
            //   0fbec9               | movsx               ecx, cl
            //   7c0b                 | jl                  0xd
            //   83f840               | cmp                 eax, 0x40
            //   7d06                 | jge                 8
            //   8a440444             | mov                 al, byte ptr [esp + eax + 0x44]

        $sequence_4 = { 83c404 8bf0 6a00 6a00 6a00 55 ff15???????? }
            // n = 7, score = 100
            //   83c404               | add                 esp, 4
            //   8bf0                 | mov                 esi, eax
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   55                   | push                ebp
            //   ff15????????         |                     

        $sequence_5 = { 8b4c2438 8b442434 3bc8 7513 83c1f8 }
            // n = 5, score = 100
            //   8b4c2438             | mov                 ecx, dword ptr [esp + 0x38]
            //   8b442434             | mov                 eax, dword ptr [esp + 0x34]
            //   3bc8                 | cmp                 ecx, eax
            //   7513                 | jne                 0x15
            //   83c1f8               | add                 ecx, -8

        $sequence_6 = { 0418 eb15 3c2e 7507 c644240852 eb0e }
            // n = 6, score = 100
            //   0418                 | add                 al, 0x18
            //   eb15                 | jmp                 0x17
            //   3c2e                 | cmp                 al, 0x2e
            //   7507                 | jne                 9
            //   c644240852           | mov                 byte ptr [esp + 8], 0x52
            //   eb0e                 | jmp                 0x10

        $sequence_7 = { c684247016000001 e8???????? 8b9c247c160000 8b6c241c e9???????? 8b442424 8b4c2414 }
            // n = 7, score = 100
            //   c684247016000001     | mov                 byte ptr [esp + 0x1670], 1
            //   e8????????           |                     
            //   8b9c247c160000       | mov                 ebx, dword ptr [esp + 0x167c]
            //   8b6c241c             | mov                 ebp, dword ptr [esp + 0x1c]
            //   e9????????           |                     
            //   8b442424             | mov                 eax, dword ptr [esp + 0x24]
            //   8b4c2414             | mov                 ecx, dword ptr [esp + 0x14]

        $sequence_8 = { 68ff070000 8d4c2418 6a01 51 ffd3 8bf8 8a460c }
            // n = 7, score = 100
            //   68ff070000           | push                0x7ff
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   6a01                 | push                1
            //   51                   | push                ecx
            //   ffd3                 | call                ebx
            //   8bf8                 | mov                 edi, eax
            //   8a460c               | mov                 al, byte ptr [esi + 0xc]

        $sequence_9 = { 7439 8d4c242c 8d542418 51 52 ff15???????? }
            // n = 6, score = 100
            //   7439                 | je                  0x3b
            //   8d4c242c             | lea                 ecx, [esp + 0x2c]
            //   8d542418             | lea                 edx, [esp + 0x18]
            //   51                   | push                ecx
            //   52                   | push                edx
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 73728
}