rule win_faketc_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.faketc."
        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.faketc"
        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 = { c784246c01000007000000 e8???????? 8d8c24b0000000 c7842460010000ffffffff e8???????? 32c0 e9???????? }
            // n = 7, score = 100
            //   c784246c01000007000000     | mov    dword ptr [esp + 0x16c], 7
            //   e8????????           |                     
            //   8d8c24b0000000       | lea                 ecx, [esp + 0xb0]
            //   c7842460010000ffffffff     | mov    dword ptr [esp + 0x160], 0xffffffff
            //   e8????????           |                     
            //   32c0                 | xor                 al, al
            //   e9????????           |                     

        $sequence_1 = { ebd2 837d0c00 7411 68???????? 8b4508 50 e8???????? }
            // n = 7, score = 100
            //   ebd2                 | jmp                 0xffffffd4
            //   837d0c00             | cmp                 dword ptr [ebp + 0xc], 0
            //   7411                 | je                  0x13
            //   68????????           |                     
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_2 = { 8b8200030000 f7d8 1bc0 83e016 e9???????? 8b4508 83b8fc01000000 }
            // n = 7, score = 100
            //   8b8200030000         | mov                 eax, dword ptr [edx + 0x300]
            //   f7d8                 | neg                 eax
            //   1bc0                 | sbb                 eax, eax
            //   83e016               | and                 eax, 0x16
            //   e9????????           |                     
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   83b8fc01000000       | cmp                 dword ptr [eax + 0x1fc], 0

        $sequence_3 = { e8???????? 83c408 eb24 8b45f0 83c028 50 6a00 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   eb24                 | jmp                 0x26
            //   8b45f0               | mov                 eax, dword ptr [ebp - 0x10]
            //   83c028               | add                 eax, 0x28
            //   50                   | push                eax
            //   6a00                 | push                0

        $sequence_4 = { e8???????? 8b4df8 8981dc850000 8b55f8 83badc85000000 750a b81b000000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   8981dc850000         | mov                 dword ptr [ecx + 0x85dc], eax
            //   8b55f8               | mov                 edx, dword ptr [ebp - 8]
            //   83badc85000000       | cmp                 dword ptr [edx + 0x85dc], 0
            //   750a                 | jne                 0xc
            //   b81b000000           | mov                 eax, 0x1b

        $sequence_5 = { e8???????? 68???????? b9???????? e8???????? 8b45e8 83c408 68ff010f00 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   68????????           |                     
            //   b9????????           |                     
            //   e8????????           |                     
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]
            //   83c408               | add                 esp, 8
            //   68ff010f00           | push                0xf01ff

        $sequence_6 = { c20c00 ff15???????? 8b1d???????? 8b54241c 2bd8 33f6 89442418 }
            // n = 7, score = 100
            //   c20c00               | ret                 0xc
            //   ff15????????         |                     
            //   8b1d????????         |                     
            //   8b54241c             | mov                 edx, dword ptr [esp + 0x1c]
            //   2bd8                 | sub                 ebx, eax
            //   33f6                 | xor                 esi, esi
            //   89442418             | mov                 dword ptr [esp + 0x18], eax

        $sequence_7 = { be20d182d0 bed0bad0b5 d0bdd0b020d0 b1d0 b5d0 b7d0 bed0bfd0b0 }
            // n = 7, score = 100
            //   be20d182d0           | mov                 esi, 0xd082d120
            //   bed0bad0b5           | mov                 esi, 0xb5d0bad0
            //   d0bdd0b020d0         | sar                 byte ptr [ebp - 0x2fdf4f30], 1
            //   b1d0                 | mov                 cl, 0xd0
            //   b5d0                 | mov                 ch, 0xd0
            //   b7d0                 | mov                 bh, 0xd0
            //   bed0bfd0b0           | mov                 esi, 0xb0d0bfd0

        $sequence_8 = { 0f84df040000 83e801 0f8548050000 0fb78570150000 3d4d040000 0f8fa0010000 0f840e010000 }
            // n = 7, score = 100
            //   0f84df040000         | je                  0x4e5
            //   83e801               | sub                 eax, 1
            //   0f8548050000         | jne                 0x54e
            //   0fb78570150000       | movzx               eax, word ptr [ebp + 0x1570]
            //   3d4d040000           | cmp                 eax, 0x44d
            //   0f8fa0010000         | jg                  0x1a6
            //   0f840e010000         | je                  0x114

        $sequence_9 = { e8???????? 83c40c c78570f7ffff9de16300 c7856cf7ffff00000000 c78568f7ffff00000000 c78564f7ffff00000000 c78560f7ffff00000000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   c78570f7ffff9de16300     | mov    dword ptr [ebp - 0x890], 0x63e19d
            //   c7856cf7ffff00000000     | mov    dword ptr [ebp - 0x894], 0
            //   c78568f7ffff00000000     | mov    dword ptr [ebp - 0x898], 0
            //   c78564f7ffff00000000     | mov    dword ptr [ebp - 0x89c], 0
            //   c78560f7ffff00000000     | mov    dword ptr [ebp - 0x8a0], 0

    condition:
        7 of them and filesize < 6864896
}