rule win_miragefox_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.miragefox."
        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.miragefox"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { c745f0555c2900 8965f4 896df8 64a100000000 8945d8 }
            // n = 5, score = 100
            //   c745f0555c2900       | mov                 dword ptr [ebp - 0x10], 0x295c55
            //   8965f4               | mov                 dword ptr [ebp - 0xc], esp
            //   896df8               | mov                 dword ptr [ebp - 8], ebp
            //   64a100000000         | mov                 eax, dword ptr fs:[0]
            //   8945d8               | mov                 dword ptr [ebp - 0x28], eax

        $sequence_1 = { 8b45e0 8b4df4 53 50 8d440828 50 }
            // n = 6, score = 100
            //   8b45e0               | mov                 eax, dword ptr [ebp - 0x20]
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   53                   | push                ebx
            //   50                   | push                eax
            //   8d440828             | lea                 eax, [eax + ecx + 0x28]
            //   50                   | push                eax

        $sequence_2 = { 03c1 eb17 8a8341f72a00 2410 }
            // n = 4, score = 100
            //   03c1                 | add                 eax, ecx
            //   eb17                 | jmp                 0x19
            //   8a8341f72a00         | mov                 al, byte ptr [ebx + 0x2af741]
            //   2410                 | and                 al, 0x10

        $sequence_3 = { ff75f4 8945ec ff36 50 e8???????? }
            // n = 5, score = 100
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   8945ec               | mov                 dword ptr [ebp - 0x14], eax
            //   ff36                 | push                dword ptr [esi]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_4 = { 8d700c 56 8975d8 e8???????? }
            // n = 4, score = 100
            //   8d700c               | lea                 esi, [eax + 0xc]
            //   56                   | push                esi
            //   8975d8               | mov                 dword ptr [ebp - 0x28], esi
            //   e8????????           |                     

        $sequence_5 = { e8???????? 8b4508 83c40c 8985d4beffff 8bc6 6a02 53 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   83c40c               | add                 esp, 0xc
            //   8985d4beffff         | mov                 dword ptr [ebp - 0x412c], eax
            //   8bc6                 | mov                 eax, esi
            //   6a02                 | push                2
            //   53                   | push                ebx

        $sequence_6 = { 8b1c9d20f52a00 8d0cc9 f6448b0480 7429 }
            // n = 4, score = 100
            //   8b1c9d20f52a00       | mov                 ebx, dword ptr [ebx*4 + 0x2af520]
            //   8d0cc9               | lea                 ecx, [ecx + ecx*8]
            //   f6448b0480           | test                byte ptr [ebx + ecx*4 + 4], 0x80
            //   7429                 | je                  0x2b

        $sequence_7 = { 8365f000 ff75ec e8???????? 8365ec00 59 eb03 ff45f0 }
            // n = 7, score = 100
            //   8365f000             | and                 dword ptr [ebp - 0x10], 0
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   e8????????           |                     
            //   8365ec00             | and                 dword ptr [ebp - 0x14], 0
            //   59                   | pop                 ecx
            //   eb03                 | jmp                 5
            //   ff45f0               | inc                 dword ptr [ebp - 0x10]

        $sequence_8 = { 83c01f 894d8c 99 59 8b75b8 f7f9 8b4df4 }
            // n = 7, score = 100
            //   83c01f               | add                 eax, 0x1f
            //   894d8c               | mov                 dword ptr [ebp - 0x74], ecx
            //   99                   | cdq                 
            //   59                   | pop                 ecx
            //   8b75b8               | mov                 esi, dword ptr [ebp - 0x48]
            //   f7f9                 | idiv                ecx
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]

        $sequence_9 = { 5e 5b c9 c21088 55 8bec 83ec18 }
            // n = 7, score = 100
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   c9                   | leave               
            //   c21088               | ret                 0x8810
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83ec18               | sub                 esp, 0x18

    condition:
        7 of them and filesize < 286720
}