rule win_kegotip_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.kegotip."
        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.kegotip"
        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 = { c745f800000000 8b45f4 0345f8 0fbe08 }
            // n = 4, score = 600
            //   c745f800000000       | mov                 dword ptr [ebp - 8], 0
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   0345f8               | add                 eax, dword ptr [ebp - 8]
            //   0fbe08               | movsx               ecx, byte ptr [eax]

        $sequence_1 = { 52 e8???????? 83c408 8b4df4 c1e902 }
            // n = 5, score = 600
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   c1e902               | shr                 ecx, 2

        $sequence_2 = { 8b550c 2b55f0 83fa03 720b 8b450c 2b45f0 }
            // n = 6, score = 600
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   2b55f0               | sub                 edx, dword ptr [ebp - 0x10]
            //   83fa03               | cmp                 edx, 3
            //   720b                 | jb                  0xd
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   2b45f0               | sub                 eax, dword ptr [ebp - 0x10]

        $sequence_3 = { 8b55f0 52 e8???????? 8945ec 6a00 }
            // n = 5, score = 600
            //   8b55f0               | mov                 edx, dword ptr [ebp - 0x10]
            //   52                   | push                edx
            //   e8????????           |                     
            //   8945ec               | mov                 dword ptr [ebp - 0x14], eax
            //   6a00                 | push                0

        $sequence_4 = { 32c0 e9???????? e8???????? 6a04 }
            // n = 4, score = 600
            //   32c0                 | xor                 al, al
            //   e9????????           |                     
            //   e8????????           |                     
            //   6a04                 | push                4

        $sequence_5 = { 8b9538f9ffff 83c201 899538f9ffff 83bd38f9ffff10 7d54 8b8540f9ffff 038538f9ffff }
            // n = 7, score = 600
            //   8b9538f9ffff         | mov                 edx, dword ptr [ebp - 0x6c8]
            //   83c201               | add                 edx, 1
            //   899538f9ffff         | mov                 dword ptr [ebp - 0x6c8], edx
            //   83bd38f9ffff10       | cmp                 dword ptr [ebp - 0x6c8], 0x10
            //   7d54                 | jge                 0x56
            //   8b8540f9ffff         | mov                 eax, dword ptr [ebp - 0x6c0]
            //   038538f9ffff         | add                 eax, dword ptr [ebp - 0x6c8]

        $sequence_6 = { 51 e8???????? 83c408 8d95f8feffff 52 8b4508 50 }
            // n = 7, score = 600
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   8d95f8feffff         | lea                 edx, [ebp - 0x108]
            //   52                   | push                edx
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   50                   | push                eax

        $sequence_7 = { 8b8dd4feffff 0fbe940dd6feffff 83fa5c 750e 8b85d4feffff }
            // n = 5, score = 600
            //   8b8dd4feffff         | mov                 ecx, dword ptr [ebp - 0x12c]
            //   0fbe940dd6feffff     | movsx               edx, byte ptr [ebp + ecx - 0x12a]
            //   83fa5c               | cmp                 edx, 0x5c
            //   750e                 | jne                 0x10
            //   8b85d4feffff         | mov                 eax, dword ptr [ebp - 0x12c]

        $sequence_8 = { 50 8d4df4 51 6a00 68???????? 8b55f8 }
            // n = 6, score = 600
            //   50                   | push                eax
            //   8d4df4               | lea                 ecx, [ebp - 0xc]
            //   51                   | push                ecx
            //   6a00                 | push                0
            //   68????????           |                     
            //   8b55f8               | mov                 edx, dword ptr [ebp - 8]

        $sequence_9 = { 32c0 e9???????? 8d95a8fdffff 52 ff15???????? }
            // n = 5, score = 600
            //   32c0                 | xor                 al, al
            //   e9????????           |                     
            //   8d95a8fdffff         | lea                 edx, [ebp - 0x258]
            //   52                   | push                edx
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 278528
}