rule win_cuegoe_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.cuegoe."
        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.cuegoe"
        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 = { e8???????? 83c43c 53 6a09 8d8574ffffff 50 e8???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   83c43c               | add                 esp, 0x3c
            //   53                   | push                ebx
            //   6a09                 | push                9
            //   8d8574ffffff         | lea                 eax, [ebp - 0x8c]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_1 = { e8???????? 83c41c 8bd8 8bc7 c645fc07 e8???????? }
            // n = 6, score = 200
            //   e8????????           |                     
            //   83c41c               | add                 esp, 0x1c
            //   8bd8                 | mov                 ebx, eax
            //   8bc7                 | mov                 eax, edi
            //   c645fc07             | mov                 byte ptr [ebp - 4], 7
            //   e8????????           |                     

        $sequence_2 = { e9???????? 8b442420 03c7 3b442440 89442420 0f8c4dffffff }
            // n = 6, score = 200
            //   e9????????           |                     
            //   8b442420             | mov                 eax, dword ptr [esp + 0x20]
            //   03c7                 | add                 eax, edi
            //   3b442440             | cmp                 eax, dword ptr [esp + 0x40]
            //   89442420             | mov                 dword ptr [esp + 0x20], eax
            //   0f8c4dffffff         | jl                  0xffffff53

        $sequence_3 = { 89752c e9???????? 83ec18 8bc4 896548 53 50 }
            // n = 7, score = 200
            //   89752c               | mov                 dword ptr [ebp + 0x2c], esi
            //   e9????????           |                     
            //   83ec18               | sub                 esp, 0x18
            //   8bc4                 | mov                 eax, esp
            //   896548               | mov                 dword ptr [ebp + 0x48], esp
            //   53                   | push                ebx
            //   50                   | push                eax

        $sequence_4 = { 5b c9 c3 837c240401 7514 83791808 7205 }
            // n = 7, score = 200
            //   5b                   | pop                 ebx
            //   c9                   | leave               
            //   c3                   | ret                 
            //   837c240401           | cmp                 dword ptr [esp + 4], 1
            //   7514                 | jne                 0x16
            //   83791808             | cmp                 dword ptr [ecx + 0x18], 8
            //   7205                 | jb                  7

        $sequence_5 = { 894c241c 8d4614 8d4c2420 3bc1 740c 8b08 8b542420 }
            // n = 7, score = 200
            //   894c241c             | mov                 dword ptr [esp + 0x1c], ecx
            //   8d4614               | lea                 eax, [esi + 0x14]
            //   8d4c2420             | lea                 ecx, [esp + 0x20]
            //   3bc1                 | cmp                 eax, ecx
            //   740c                 | je                  0xe
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8b542420             | mov                 edx, dword ptr [esp + 0x20]

        $sequence_6 = { 8bf0 e8???????? 84c0 8b45c8 7403 830801 8d4dd0 }
            // n = 7, score = 200
            //   8bf0                 | mov                 esi, eax
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   8b45c8               | mov                 eax, dword ptr [ebp - 0x38]
            //   7403                 | je                  5
            //   830801               | or                  dword ptr [eax], 1
            //   8d4dd0               | lea                 ecx, [ebp - 0x30]

        $sequence_7 = { 83c704 8bc7 8d4dfc 51 53 8d4d10 51 }
            // n = 7, score = 200
            //   83c704               | add                 edi, 4
            //   8bc7                 | mov                 eax, edi
            //   8d4dfc               | lea                 ecx, [ebp - 4]
            //   51                   | push                ecx
            //   53                   | push                ebx
            //   8d4d10               | lea                 ecx, [ebp + 0x10]
            //   51                   | push                ecx

        $sequence_8 = { 8b4514 2bc6 40 50 8d1c37 53 }
            // n = 6, score = 200
            //   8b4514               | mov                 eax, dword ptr [ebp + 0x14]
            //   2bc6                 | sub                 eax, esi
            //   40                   | inc                 eax
            //   50                   | push                eax
            //   8d1c37               | lea                 ebx, [edi + esi]
            //   53                   | push                ebx

        $sequence_9 = { 8b850c040000 33db 8bf9 894544 895d18 8d856cffffff 50 }
            // n = 7, score = 200
            //   8b850c040000         | mov                 eax, dword ptr [ebp + 0x40c]
            //   33db                 | xor                 ebx, ebx
            //   8bf9                 | mov                 edi, ecx
            //   894544               | mov                 dword ptr [ebp + 0x44], eax
            //   895d18               | mov                 dword ptr [ebp + 0x18], ebx
            //   8d856cffffff         | lea                 eax, [ebp - 0x94]
            //   50                   | push                eax

    condition:
        7 of them and filesize < 540672
}