rule win_poweliks_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        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 = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 3a441dd0 7509 ff45fc 837dfc0d 72e5 }
            // n = 5, score = 200
            //   3a441dd0             | cmp                 al, byte ptr [ebp + ebx - 0x30]
            //   7509                 | jne                 0xb
            //   ff45fc               | inc                 dword ptr [ebp - 4]
            //   837dfc0d             | cmp                 dword ptr [ebp - 4], 0xd
            //   72e5                 | jb                  0xffffffe7

        $sequence_1 = { 394df4 72cd 8b703c 03f0 8b8e80000000 837c010c00 7449 }
            // n = 7, score = 200
            //   394df4               | cmp                 dword ptr [ebp - 0xc], ecx
            //   72cd                 | jb                  0xffffffcf
            //   8b703c               | mov                 esi, dword ptr [eax + 0x3c]
            //   03f0                 | add                 esi, eax
            //   8b8e80000000         | mov                 ecx, dword ptr [esi + 0x80]
            //   837c010c00           | cmp                 dword ptr [ecx + eax + 0xc], 0
            //   7449                 | je                  0x4b

        $sequence_2 = { ff7350 6a00 ffd0 8945f8 }
            // n = 4, score = 200
            //   ff7350               | push                dword ptr [ebx + 0x50]
            //   6a00                 | push                0
            //   ffd0                 | call                eax
            //   8945f8               | mov                 dword ptr [ebp - 8], eax

        $sequence_3 = { 83ff0c 7439 3bc8 75ce 8b5508 }
            // n = 5, score = 200
            //   83ff0c               | cmp                 edi, 0xc
            //   7439                 | je                  0x3b
            //   3bc8                 | cmp                 ecx, eax
            //   75ce                 | jne                 0xffffffd0
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]

        $sequence_4 = { 668945a2 58 6a32 668945a4 }
            // n = 4, score = 200
            //   668945a2             | mov                 word ptr [ebp - 0x5e], ax
            //   58                   | pop                 eax
            //   6a32                 | push                0x32
            //   668945a4             | mov                 word ptr [ebp - 0x5c], ax

        $sequence_5 = { 8b0c87 0fb70443 8b3486 8365fc00 03ca 894df4 }
            // n = 6, score = 200
            //   8b0c87               | mov                 ecx, dword ptr [edi + eax*4]
            //   0fb70443             | movzx               eax, word ptr [ebx + eax*2]
            //   8b3486               | mov                 esi, dword ptr [esi + eax*4]
            //   8365fc00             | and                 dword ptr [ebp - 4], 0
            //   03ca                 | add                 ecx, edx
            //   894df4               | mov                 dword ptr [ebp - 0xc], ecx

        $sequence_6 = { 51 ff15???????? 8945f8 8d45f8 50 ff15???????? 33d2 }
            // n = 7, score = 200
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   33d2                 | xor                 edx, edx

        $sequence_7 = { 0fb65dfe 81e307000080 7905 4b 83cbf8 43 }
            // n = 6, score = 200
            //   0fb65dfe             | movzx               ebx, byte ptr [ebp - 2]
            //   81e307000080         | and                 ebx, 0x80000007
            //   7905                 | jns                 7
            //   4b                   | dec                 ebx
            //   83cbf8               | or                  ebx, 0xfffffff8
            //   43                   | inc                 ebx

        $sequence_8 = { 03c8 3a5c0db0 7506 40 83f80f 72eb }
            // n = 6, score = 200
            //   03c8                 | add                 ecx, eax
            //   3a5c0db0             | cmp                 bl, byte ptr [ebp + ecx - 0x50]
            //   7506                 | jne                 8
            //   40                   | inc                 eax
            //   83f80f               | cmp                 eax, 0xf
            //   72eb                 | jb                  0xffffffed

        $sequence_9 = { 8975e0 894df4 8d4db0 33c0 294df4 }
            // n = 5, score = 200
            //   8975e0               | mov                 dword ptr [ebp - 0x20], esi
            //   894df4               | mov                 dword ptr [ebp - 0xc], ecx
            //   8d4db0               | lea                 ecx, [ebp - 0x50]
            //   33c0                 | xor                 eax, eax
            //   294df4               | sub                 dword ptr [ebp - 0xc], ecx

    condition:
        7 of them and filesize < 115712
}