rule win_turnedup_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.turnedup."
        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.turnedup"
        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 = { 8d4c2420 23f7 e8???????? 3bf3 740a 8b16 }
            // n = 6, score = 400
            //   8d4c2420             | lea                 ecx, [esp + 0x20]
            //   23f7                 | and                 esi, edi
            //   e8????????           |                     
            //   3bf3                 | cmp                 esi, ebx
            //   740a                 | je                  0xc
            //   8b16                 | mov                 edx, dword ptr [esi]

        $sequence_1 = { 8bec 56 57 8bf0 bf0f000000 8d642400 8bce }
            // n = 7, score = 400
            //   8bec                 | mov                 ebp, esp
            //   56                   | push                esi
            //   57                   | push                edi
            //   8bf0                 | mov                 esi, eax
            //   bf0f000000           | mov                 edi, 0xf
            //   8d642400             | lea                 esp, [esp]
            //   8bce                 | mov                 ecx, esi

        $sequence_2 = { 41 53 56 3bc1 }
            // n = 4, score = 400
            //   41                   | inc                 ecx
            //   53                   | push                ebx
            //   56                   | push                esi
            //   3bc1                 | cmp                 eax, ecx

        $sequence_3 = { 8b45bc c6002d 8b0b 40 8945bc 85c9 7433 }
            // n = 7, score = 400
            //   8b45bc               | mov                 eax, dword ptr [ebp - 0x44]
            //   c6002d               | mov                 byte ptr [eax], 0x2d
            //   8b0b                 | mov                 ecx, dword ptr [ebx]
            //   40                   | inc                 eax
            //   8945bc               | mov                 dword ptr [ebp - 0x44], eax
            //   85c9                 | test                ecx, ecx
            //   7433                 | je                  0x35

        $sequence_4 = { 83ec1c 8bcc 6a0f c741140f000000 c7411000000000 68???????? }
            // n = 6, score = 400
            //   83ec1c               | sub                 esp, 0x1c
            //   8bcc                 | mov                 ecx, esp
            //   6a0f                 | push                0xf
            //   c741140f000000       | mov                 dword ptr [ecx + 0x14], 0xf
            //   c7411000000000       | mov                 dword ptr [ecx + 0x10], 0
            //   68????????           |                     

        $sequence_5 = { 7433 4a 7410 8b45e0 83ff10 7303 }
            // n = 6, score = 400
            //   7433                 | je                  0x35
            //   4a                   | dec                 edx
            //   7410                 | je                  0x12
            //   8b45e0               | mov                 eax, dword ptr [ebp - 0x20]
            //   83ff10               | cmp                 edi, 0x10
            //   7303                 | jae                 5

        $sequence_6 = { 83ec1c 8bcc 6a14 c741140f000000 }
            // n = 4, score = 400
            //   83ec1c               | sub                 esp, 0x1c
            //   8bcc                 | mov                 ecx, esp
            //   6a14                 | push                0x14
            //   c741140f000000       | mov                 dword ptr [ecx + 0x14], 0xf

        $sequence_7 = { 40 894704 8d4db4 e8???????? }
            // n = 4, score = 400
            //   40                   | inc                 eax
            //   894704               | mov                 dword ptr [edi + 4], eax
            //   8d4db4               | lea                 ecx, [ebp - 0x4c]
            //   e8????????           |                     

        $sequence_8 = { 8d4d14 e8???????? 83c410 50 8d542420 52 }
            // n = 6, score = 400
            //   8d4d14               | lea                 ecx, [ebp + 0x14]
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   50                   | push                eax
            //   8d542420             | lea                 edx, [esp + 0x20]
            //   52                   | push                edx

        $sequence_9 = { 8bec 8b4914 56 8b7508 8bc1 57 c746140f000000 }
            // n = 7, score = 400
            //   8bec                 | mov                 ebp, esp
            //   8b4914               | mov                 ecx, dword ptr [ecx + 0x14]
            //   56                   | push                esi
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   8bc1                 | mov                 eax, ecx
            //   57                   | push                edi
            //   c746140f000000       | mov                 dword ptr [esi + 0x14], 0xf

    condition:
        7 of them and filesize < 892928
}