rule win_shadowpad_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-08-05"
        version = "1"
        description = "Detects win.shadowpad."
        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.shadowpad"
        malpedia_rule_date = "20220805"
        malpedia_hash = "6ec06c64bcfdbeda64eff021c766b4ce34542b71"
        malpedia_version = "20220808"
        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 = { 0fbec0 c1cb08 03d8 81f3a3d9357c 41 }
            // n = 5, score = 200
            //   0fbec0               | movsx               eax, al
            //   c1cb08               | ror                 ebx, 8
            //   03d8                 | add                 ebx, eax
            //   81f3a3d9357c         | xor                 ebx, 0x7c35d9a3
            //   41                   | inc                 ecx

        $sequence_1 = { 8bec 8b4608 8d0c38 3b0e 7e07 }
            // n = 5, score = 200
            //   8bec                 | mov                 ebp, esp
            //   8b4608               | mov                 eax, dword ptr [esi + 8]
            //   8d0c38               | lea                 ecx, [eax + edi]
            //   3b0e                 | cmp                 ecx, dword ptr [esi]
            //   7e07                 | jle                 9

        $sequence_2 = { 53 8d4590 50 ffd7 8d8590efffff 50 }
            // n = 6, score = 200
            //   53                   | push                ebx
            //   8d4590               | lea                 eax, [ebp - 0x70]
            //   50                   | push                eax
            //   ffd7                 | call                edi
            //   8d8590efffff         | lea                 eax, [ebp - 0x1070]
            //   50                   | push                eax

        $sequence_3 = { 6a00 8bf0 e8???????? 53 50 ff15???????? }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   8bf0                 | mov                 esi, eax
            //   e8????????           |                     
            //   53                   | push                ebx
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_4 = { ffd0 8bc8 3bce 5f 1bc0 5e 23c1 }
            // n = 7, score = 200
            //   ffd0                 | call                eax
            //   8bc8                 | mov                 ecx, eax
            //   3bce                 | cmp                 ecx, esi
            //   5f                   | pop                 edi
            //   1bc0                 | sbb                 eax, eax
            //   5e                   | pop                 esi
            //   23c1                 | and                 eax, ecx

        $sequence_5 = { 56 ffd0 8d75ec a3???????? e8???????? }
            // n = 5, score = 200
            //   56                   | push                esi
            //   ffd0                 | call                eax
            //   8d75ec               | lea                 esi, [ebp - 0x14]
            //   a3????????           |                     
            //   e8????????           |                     

        $sequence_6 = { 3916 7f58 83f801 7e53 }
            // n = 4, score = 200
            //   3916                 | cmp                 dword ptr [esi], edx
            //   7f58                 | jg                  0x5a
            //   83f801               | cmp                 eax, 1
            //   7e53                 | jle                 0x55

        $sequence_7 = { 50 ffd7 8b35???????? 8d850cefffff }
            // n = 4, score = 200
            //   50                   | push                eax
            //   ffd7                 | call                edi
            //   8b35????????         |                     
            //   8d850cefffff         | lea                 eax, [ebp - 0x10f4]

        $sequence_8 = { 8bfe 8d45e8 895de8 895dec 895df4 895df0 885df8 }
            // n = 7, score = 200
            //   8bfe                 | mov                 edi, esi
            //   8d45e8               | lea                 eax, [ebp - 0x18]
            //   895de8               | mov                 dword ptr [ebp - 0x18], ebx
            //   895dec               | mov                 dword ptr [ebp - 0x14], ebx
            //   895df4               | mov                 dword ptr [ebp - 0xc], ebx
            //   895df0               | mov                 dword ptr [ebp - 0x10], ebx
            //   885df8               | mov                 byte ptr [ebp - 8], bl

        $sequence_9 = { 57 668945f6 ffd3 57 668945f8 }
            // n = 5, score = 200
            //   57                   | push                edi
            //   668945f6             | mov                 word ptr [ebp - 0xa], ax
            //   ffd3                 | call                ebx
            //   57                   | push                edi
            //   668945f8             | mov                 word ptr [ebp - 8], ax

    condition:
        7 of them and filesize < 188416
}