rule win_allaple_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.allaple."
        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.allaple"
        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 = { 8985c8faffff eb12 6a00 ff37 ff36 8d85eefcffff }
            // n = 6, score = 300
            //   8985c8faffff         | mov                 dword ptr [ebp - 0x538], eax
            //   eb12                 | jmp                 0x14
            //   6a00                 | push                0
            //   ff37                 | push                dword ptr [edi]
            //   ff36                 | push                dword ptr [esi]
            //   8d85eefcffff         | lea                 eax, [ebp - 0x312]

        $sequence_1 = { 0355ec 03954cffffff 8b45e4 33c2 8945e4 8b4dec 8b55f0 }
            // n = 7, score = 300
            //   0355ec               | add                 edx, dword ptr [ebp - 0x14]
            //   03954cffffff         | add                 edx, dword ptr [ebp - 0xb4]
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]
            //   33c2                 | xor                 eax, edx
            //   8945e4               | mov                 dword ptr [ebp - 0x1c], eax
            //   8b4dec               | mov                 ecx, dword ptr [ebp - 0x14]
            //   8b55f0               | mov                 edx, dword ptr [ebp - 0x10]

        $sequence_2 = { e8???????? ff75f8 e8???????? c745f000000000 ebb5 5b }
            // n = 6, score = 300
            //   e8????????           |                     
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     
            //   c745f000000000       | mov                 dword ptr [ebp - 0x10], 0
            //   ebb5                 | jmp                 0xffffffb7
            //   5b                   | pop                 ebx

        $sequence_3 = { 8d856cfeffff 50 57 e8???????? 03f8 c70702000000 83c704 }
            // n = 7, score = 300
            //   8d856cfeffff         | lea                 eax, [ebp - 0x194]
            //   50                   | push                eax
            //   57                   | push                edi
            //   e8????????           |                     
            //   03f8                 | add                 edi, eax
            //   c70702000000         | mov                 dword ptr [edi], 2
            //   83c704               | add                 edi, 4

        $sequence_4 = { 8b75fc 83c306 8bcb 03ce 51 8d85c8feffff }
            // n = 6, score = 300
            //   8b75fc               | mov                 esi, dword ptr [ebp - 4]
            //   83c306               | add                 ebx, 6
            //   8bcb                 | mov                 ecx, ebx
            //   03ce                 | add                 ecx, esi
            //   51                   | push                ecx
            //   8d85c8feffff         | lea                 eax, [ebp - 0x138]

        $sequence_5 = { 50 ffb5dcfaffff ffb5e0faffff 6a03 6a00 ff75f4 e8???????? }
            // n = 7, score = 300
            //   50                   | push                eax
            //   ffb5dcfaffff         | push                dword ptr [ebp - 0x524]
            //   ffb5e0faffff         | push                dword ptr [ebp - 0x520]
            //   6a03                 | push                3
            //   6a00                 | push                0
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   e8????????           |                     

        $sequence_6 = { e8???????? e9???????? 8b95b4fdffff 8d8a8a010000 c785b8fdffff00000000 80790a30 7523 }
            // n = 7, score = 300
            //   e8????????           |                     
            //   e9????????           |                     
            //   8b95b4fdffff         | mov                 edx, dword ptr [ebp - 0x24c]
            //   8d8a8a010000         | lea                 ecx, [edx + 0x18a]
            //   c785b8fdffff00000000     | mov    dword ptr [ebp - 0x248], 0
            //   80790a30             | cmp                 byte ptr [ecx + 0xa], 0x30
            //   7523                 | jne                 0x25

        $sequence_7 = { 57 e8???????? 03f8 c70718000000 83c714 c707ffffffff 83c704 }
            // n = 7, score = 300
            //   57                   | push                edi
            //   e8????????           |                     
            //   03f8                 | add                 edi, eax
            //   c70718000000         | mov                 dword ptr [edi], 0x18
            //   83c714               | add                 edi, 0x14
            //   c707ffffffff         | mov                 dword ptr [edi], 0xffffffff
            //   83c704               | add                 edi, 4

        $sequence_8 = { 8d9411eecebdc1 8955f8 8b45f8 c1e016 8b4df8 c1e90a }
            // n = 6, score = 300
            //   8d9411eecebdc1       | lea                 edx, [ecx + edx - 0x3e423112]
            //   8955f8               | mov                 dword ptr [ebp - 8], edx
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   c1e016               | shl                 eax, 0x16
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   c1e90a               | shr                 ecx, 0xa

        $sequence_9 = { 8db5ecf8ffff 83c604 0fb74605 eb07 b8ffffffff eb00 5b }
            // n = 7, score = 300
            //   8db5ecf8ffff         | lea                 esi, [ebp - 0x714]
            //   83c604               | add                 esi, 4
            //   0fb74605             | movzx               eax, word ptr [esi + 5]
            //   eb07                 | jmp                 9
            //   b8ffffffff           | mov                 eax, 0xffffffff
            //   eb00                 | jmp                 2
            //   5b                   | pop                 ebx

    condition:
        7 of them and filesize < 253952
}