rule win_taleret_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        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 = "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 = { 40 89442430 8b442428 c6450000 50 e8???????? 8b4c243c }
            // n = 7, score = 100
            //   40                   | inc                 eax
            //   89442430             | mov                 dword ptr [esp + 0x30], eax
            //   8b442428             | mov                 eax, dword ptr [esp + 0x28]
            //   c6450000             | mov                 byte ptr [ebp], 0
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b4c243c             | mov                 ecx, dword ptr [esp + 0x3c]

        $sequence_1 = { 56 6a03 6a00 68???????? 51 }
            // n = 5, score = 100
            //   56                   | push                esi
            //   6a03                 | push                3
            //   6a00                 | push                0
            //   68????????           |                     
            //   51                   | push                ecx

        $sequence_2 = { 2bf9 8d942458020000 8bf7 8bd9 8bfa 83c9ff f2ae }
            // n = 7, score = 100
            //   2bf9                 | sub                 edi, ecx
            //   8d942458020000       | lea                 edx, [esp + 0x258]
            //   8bf7                 | mov                 esi, edi
            //   8bd9                 | mov                 ebx, ecx
            //   8bfa                 | mov                 edi, edx
            //   83c9ff               | or                  ecx, 0xffffffff
            //   f2ae                 | repne scasb         al, byte ptr es:[edi]

        $sequence_3 = { 8b542418 8d4c2450 6a04 51 }
            // n = 4, score = 100
            //   8b542418             | mov                 edx, dword ptr [esp + 0x18]
            //   8d4c2450             | lea                 ecx, [esp + 0x50]
            //   6a04                 | push                4
            //   51                   | push                ecx

        $sequence_4 = { 85c0 0f84f0050000 8d542448 33ed }
            // n = 4, score = 100
            //   85c0                 | test                eax, eax
            //   0f84f0050000         | je                  0x5f6
            //   8d542448             | lea                 edx, [esp + 0x48]
            //   33ed                 | xor                 ebp, ebp

        $sequence_5 = { 0bce 7c0e 83f940 7d09 8a8c0ccc000000 }
            // n = 5, score = 100
            //   0bce                 | or                  ecx, esi
            //   7c0e                 | jl                  0x10
            //   83f940               | cmp                 ecx, 0x40
            //   7d09                 | jge                 0xb
            //   8a8c0ccc000000       | mov                 cl, byte ptr [esp + ecx + 0xcc]

        $sequence_6 = { 8b942428100000 50 52 68???????? 57 e8???????? 83c410 }
            // n = 7, score = 100
            //   8b942428100000       | mov                 edx, dword ptr [esp + 0x1028]
            //   50                   | push                eax
            //   52                   | push                edx
            //   68????????           |                     
            //   57                   | push                edi
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10

        $sequence_7 = { e8???????? 8d4c2428 c7442420ffffffff e8???????? 33c0 8b4c2418 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   8d4c2428             | lea                 ecx, [esp + 0x28]
            //   c7442420ffffffff     | mov                 dword ptr [esp + 0x20], 0xffffffff
            //   e8????????           |                     
            //   33c0                 | xor                 eax, eax
            //   8b4c2418             | mov                 ecx, dword ptr [esp + 0x18]

        $sequence_8 = { e8???????? e9???????? 8d4c2410 c7842430100000ffffffff e8???????? }
            // n = 5, score = 100
            //   e8????????           |                     
            //   e9????????           |                     
            //   8d4c2410             | lea                 ecx, [esp + 0x10]
            //   c7842430100000ffffffff     | mov    dword ptr [esp + 0x1030], 0xffffffff
            //   e8????????           |                     

        $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
}