rule win_poweliks_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.poweliks."
        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.poweliks"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 7415 8b7d08 8b720c 81c704110000 03f7 8b7a04 03f8 }
            // n = 7, score = 200
            //   7415                 | je                  0x17
            //   8b7d08               | mov                 edi, dword ptr [ebp + 8]
            //   8b720c               | mov                 esi, dword ptr [edx + 0xc]
            //   81c704110000         | add                 edi, 0x1104
            //   03f7                 | add                 esi, edi
            //   8b7a04               | mov                 edi, dword ptr [edx + 4]
            //   03f8                 | add                 edi, eax

        $sequence_1 = { 668945aa 58 668945ac 668945ae 64a130000000 }
            // n = 5, score = 200
            //   668945aa             | mov                 word ptr [ebp - 0x56], ax
            //   58                   | pop                 eax
            //   668945ac             | mov                 word ptr [ebp - 0x54], ax
            //   668945ae             | mov                 word ptr [ebp - 0x52], ax
            //   64a130000000         | mov                 eax, dword ptr fs:[0x30]

        $sequence_2 = { 85c0 0f8482000000 eb0b 8b5118 ebc9 }
            // n = 5, score = 200
            //   85c0                 | test                eax, eax
            //   0f8482000000         | je                  0x88
            //   eb0b                 | jmp                 0xd
            //   8b5118               | mov                 edx, dword ptr [ecx + 0x18]
            //   ebc9                 | jmp                 0xffffffcb

        $sequence_3 = { 8bcb d2e0 0ad0 88543e01 }
            // n = 4, score = 200
            //   8bcb                 | mov                 ecx, ebx
            //   d2e0                 | shl                 al, cl
            //   0ad0                 | or                  dl, al
            //   88543e01             | mov                 byte ptr [esi + edi + 1], dl

        $sequence_4 = { 8d5598 33ff 2bf2 8d147e 8a541598 32547d98 }
            // n = 6, score = 200
            //   8d5598               | lea                 edx, [ebp - 0x68]
            //   33ff                 | xor                 edi, edi
            //   2bf2                 | sub                 esi, edx
            //   8d147e               | lea                 edx, [esi + edi*2]
            //   8a541598             | mov                 dl, byte ptr [ebp + edx - 0x68]
            //   32547d98             | xor                 dl, byte ptr [ebp + edi*2 - 0x68]

        $sequence_5 = { f7f1 8365f800 837d0c00 c645fe01 8855ff 8816 }
            // n = 6, score = 200
            //   f7f1                 | div                 ecx
            //   8365f800             | and                 dword ptr [ebp - 8], 0
            //   837d0c00             | cmp                 dword ptr [ebp + 0xc], 0
            //   c645fe01             | mov                 byte ptr [ebp - 2], 1
            //   8855ff               | mov                 byte ptr [ebp - 1], dl
            //   8816                 | mov                 byte ptr [esi], dl

        $sequence_6 = { 6689459e 58 6a6c 668945a0 58 6a33 668945a2 }
            // n = 7, score = 200
            //   6689459e             | mov                 word ptr [ebp - 0x62], ax
            //   58                   | pop                 eax
            //   6a6c                 | push                0x6c
            //   668945a0             | mov                 word ptr [ebp - 0x60], ax
            //   58                   | pop                 eax
            //   6a33                 | push                0x33
            //   668945a2             | mov                 word ptr [ebp - 0x5e], ax

        $sequence_7 = { c645cc00 8b400c 53 83c00c 56 c745d04c6f6164 }
            // n = 6, score = 200
            //   c645cc00             | mov                 byte ptr [ebp - 0x34], 0
            //   8b400c               | mov                 eax, dword ptr [eax + 0xc]
            //   53                   | push                ebx
            //   83c00c               | add                 eax, 0xc
            //   56                   | push                esi
            //   c745d04c6f6164       | mov                 dword ptr [ebp - 0x30], 0x64616f4c

        $sequence_8 = { 8b45fc 8b5df4 03d8 8a4405d0 3a441dd0 7509 }
            // n = 6, score = 200
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   8b5df4               | mov                 ebx, dword ptr [ebp - 0xc]
            //   03d8                 | add                 ebx, eax
            //   8a4405d0             | mov                 al, byte ptr [ebp + eax - 0x30]
            //   3a441dd0             | cmp                 al, byte ptr [ebp + ebx - 0x30]
            //   7509                 | jne                 0xb

        $sequence_9 = { 3a5c0db0 7506 40 83f80f }
            // n = 4, score = 200
            //   3a5c0db0             | cmp                 bl, byte ptr [ebp + ecx - 0x50]
            //   7506                 | jne                 8
            //   40                   | inc                 eax
            //   83f80f               | cmp                 eax, 0xf

    condition:
        7 of them and filesize < 115712
}