rule win_sedll_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.sedll"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 83c204 83c604 83ef04 73ef 8b4510 }
            // n = 5, score = 200
            //   83c204               | add                 edx, 4
            //   83c604               | add                 esi, 4
            //   83ef04               | sub                 edi, 4
            //   73ef                 | jae                 0xfffffff1
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]

        $sequence_1 = { 75f9 2bd1 8bcb e8???????? 8bd8 8945fc }
            // n = 6, score = 200
            //   75f9                 | jne                 0xfffffffb
            //   2bd1                 | sub                 edx, ecx
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   8945fc               | mov                 dword ptr [ebp - 4], eax

        $sequence_2 = { 57 8bf9 85c0 7567 6804010000 }
            // n = 5, score = 200
            //   57                   | push                edi
            //   8bf9                 | mov                 edi, ecx
            //   85c0                 | test                eax, eax
            //   7567                 | jne                 0x69
            //   6804010000           | push                0x104

        $sequence_3 = { c20c00 8b4510 33c9 5f }
            // n = 4, score = 200
            //   c20c00               | ret                 0xc
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   33c9                 | xor                 ecx, ecx
            //   5f                   | pop                 edi

        $sequence_4 = { bf0c000000 8b02 3b06 7521 83c204 83c604 83ef04 }
            // n = 7, score = 200
            //   bf0c000000           | mov                 edi, 0xc
            //   8b02                 | mov                 eax, dword ptr [edx]
            //   3b06                 | cmp                 eax, dword ptr [esi]
            //   7521                 | jne                 0x23
            //   83c204               | add                 edx, 4
            //   83c604               | add                 esi, 4
            //   83ef04               | sub                 edi, 4

        $sequence_5 = { 5d c3 52 ff15???????? 8bc8 83c404 894df8 }
            // n = 7, score = 200
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   52                   | push                edx
            //   ff15????????         |                     
            //   8bc8                 | mov                 ecx, eax
            //   83c404               | add                 esp, 4
            //   894df8               | mov                 dword ptr [ebp - 8], ecx

        $sequence_6 = { ffd6 6805010000 8d8424a4050000 50 ff35???????? ffd6 68???????? }
            // n = 7, score = 200
            //   ffd6                 | call                esi
            //   6805010000           | push                0x105
            //   8d8424a4050000       | lea                 eax, [esp + 0x5a4]
            //   50                   | push                eax
            //   ff35????????         |                     
            //   ffd6                 | call                esi
            //   68????????           |                     

        $sequence_7 = { 5d c20c00 8bd1 be???????? }
            // n = 4, score = 200
            //   5d                   | pop                 ebp
            //   c20c00               | ret                 0xc
            //   8bd1                 | mov                 edx, ecx
            //   be????????           |                     

        $sequence_8 = { ff75fc 6a00 6a00 ffd3 8bc7 5f 5e }
            // n = 7, score = 200
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   ffd3                 | call                ebx
            //   8bc7                 | mov                 eax, edi
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_9 = { 83f9ff 7426 8a4203 3a4603 741e 8bd3 }
            // n = 6, score = 200
            //   83f9ff               | cmp                 ecx, -1
            //   7426                 | je                  0x28
            //   8a4203               | mov                 al, byte ptr [edx + 3]
            //   3a4603               | cmp                 al, byte ptr [esi + 3]
            //   741e                 | je                  0x20
            //   8bd3                 | mov                 edx, ebx

    condition:
        7 of them and filesize < 65536
}