rule win_shadowpad_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-05-30"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.shadowpad"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        malpedia_license = "CC BY-NC-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 / approach 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 = { 50 ffd7 8d75d0 8945f4 e8???????? 8d45d0 e8???????? }
            // n = 7, score = 200
            //   50                   | push                eax
            //   ffd7                 | call                edi
            //   8d75d0               | lea                 esi, [ebp - 0x30]
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   e8????????           |                     
            //   8d45d0               | lea                 eax, [ebp - 0x30]
            //   e8????????           |                     

        $sequence_1 = { e8???????? 50 e8???????? 59 8d75ec a3???????? e8???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   8d75ec               | lea                 esi, [ebp - 0x14]
            //   a3????????           |                     
            //   e8????????           |                     

        $sequence_2 = { e8???????? 85c0 75a1 8d4314 50 e8???????? }
            // n = 6, score = 200
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   75a1                 | jne                 0xffffffa3
            //   8d4314               | lea                 eax, [ebx + 0x14]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_3 = { 8b442440 2b442410 8b4c2444 1b4c2414 781e }
            // n = 5, score = 200
            //   8b442440             | mov                 eax, dword ptr [esp + 0x40]
            //   2b442410             | sub                 eax, dword ptr [esp + 0x10]
            //   8b4c2444             | mov                 ecx, dword ptr [esp + 0x44]
            //   1b4c2414             | sbb                 ecx, dword ptr [esp + 0x14]
            //   781e                 | js                  0x20

        $sequence_4 = { 8d45e0 c745fc00100001 e8???????? 8b7508 83650c00 837e4400 7e48 }
            // n = 7, score = 200
            //   8d45e0               | lea                 eax, [ebp - 0x20]
            //   c745fc00100001       | mov                 dword ptr [ebp - 4], 0x1001000
            //   e8????????           |                     
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   83650c00             | and                 dword ptr [ebp + 0xc], 0
            //   837e4400             | cmp                 dword ptr [esi + 0x44], 0
            //   7e48                 | jle                 0x4a

        $sequence_5 = { e8???????? 83660800 83660c00 59 895e08 897e0c 33c0 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   83660800             | and                 dword ptr [esi + 8], 0
            //   83660c00             | and                 dword ptr [esi + 0xc], 0
            //   59                   | pop                 ecx
            //   895e08               | mov                 dword ptr [esi + 8], ebx
            //   897e0c               | mov                 dword ptr [esi + 0xc], edi
            //   33c0                 | xor                 eax, eax

        $sequence_6 = { c20400 8b06 85c0 740e 50 e8???????? }
            // n = 6, score = 200
            //   c20400               | ret                 4
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   85c0                 | test                eax, eax
            //   740e                 | je                  0x10
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_7 = { 8bc6 83e003 8bd0 83ea00 7448 4a 7430 }
            // n = 7, score = 200
            //   8bc6                 | mov                 eax, esi
            //   83e003               | and                 eax, 3
            //   8bd0                 | mov                 edx, eax
            //   83ea00               | sub                 edx, 0
            //   7448                 | je                  0x4a
            //   4a                   | dec                 edx
            //   7430                 | je                  0x32

        $sequence_8 = { a3???????? ff7508 ff35???????? ffd0 c9 c3 55 }
            // n = 7, score = 200
            //   a3????????           |                     
            //   ff7508               | push                dword ptr [ebp + 8]
            //   ff35????????         |                     
            //   ffd0                 | call                eax
            //   c9                   | leave               
            //   c3                   | ret                 
            //   55                   | push                ebp

        $sequence_9 = { 897e0c 895e04 33c0 5f c3 }
            // n = 5, score = 200
            //   897e0c               | mov                 dword ptr [esi + 0xc], edi
            //   895e04               | mov                 dword ptr [esi + 4], ebx
            //   33c0                 | xor                 eax, eax
            //   5f                   | pop                 edi
            //   c3                   | ret                 

    condition:
        7 of them and filesize < 188416
}