rule win_ehdevel_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.ehdevel."
        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.ehdevel"
        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 = { 52 8d1448 68???????? 52 e8???????? 83c40c 837e1408 }
            // n = 7, score = 100
            //   52                   | push                edx
            //   8d1448               | lea                 edx, [eax + ecx*2]
            //   68????????           |                     
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   837e1408             | cmp                 dword ptr [esi + 0x14], 8

        $sequence_1 = { 50 e8???????? 6a22 8d8c24c8000000 8d542424 c78424dc04000000000000 e8???????? }
            // n = 7, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   6a22                 | push                0x22
            //   8d8c24c8000000       | lea                 ecx, [esp + 0xc8]
            //   8d542424             | lea                 edx, [esp + 0x24]
            //   c78424dc04000000000000     | mov    dword ptr [esp + 0x4dc], 0
            //   e8????????           |                     

        $sequence_2 = { e8???????? 8bd8 83c404 53 56 }
            // n = 5, score = 100
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   83c404               | add                 esp, 4
            //   53                   | push                ebx
            //   56                   | push                esi

        $sequence_3 = { 8bce c745fc0d000000 e8???????? c745fcffffffff 837de808 720c }
            // n = 6, score = 100
            //   8bce                 | mov                 ecx, esi
            //   c745fc0d000000       | mov                 dword ptr [ebp - 4], 0xd
            //   e8????????           |                     
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   837de808             | cmp                 dword ptr [ebp - 0x18], 8
            //   720c                 | jb                  0xe

        $sequence_4 = { 8b85e48bffff 50 ffd6 68???????? }
            // n = 4, score = 100
            //   8b85e48bffff         | mov                 eax, dword ptr [ebp - 0x741c]
            //   50                   | push                eax
            //   ffd6                 | call                esi
            //   68????????           |                     

        $sequence_5 = { 33ff 57 8985b4f7ffff ff15???????? 33d2 8d85f0f7ffff 668995d4f7ffff }
            // n = 7, score = 100
            //   33ff                 | xor                 edi, edi
            //   57                   | push                edi
            //   8985b4f7ffff         | mov                 dword ptr [ebp - 0x84c], eax
            //   ff15????????         |                     
            //   33d2                 | xor                 edx, edx
            //   8d85f0f7ffff         | lea                 eax, [ebp - 0x810]
            //   668995d4f7ffff       | mov                 word ptr [ebp - 0x82c], dx

        $sequence_6 = { 83ec08 8b4d10 8b5514 8b450c 52 8b5508 }
            // n = 6, score = 100
            //   83ec08               | sub                 esp, 8
            //   8b4d10               | mov                 ecx, dword ptr [ebp + 0x10]
            //   8b5514               | mov                 edx, dword ptr [ebp + 0x14]
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   52                   | push                edx
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]

        $sequence_7 = { 53 ff15???????? 85c0 7533 83fe05 7345 }
            // n = 6, score = 100
            //   53                   | push                ebx
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7533                 | jne                 0x35
            //   83fe05               | cmp                 esi, 5
            //   7345                 | jae                 0x47

        $sequence_8 = { c745fc13000000 e8???????? 837dcc08 720c 8b45b8 }
            // n = 5, score = 100
            //   c745fc13000000       | mov                 dword ptr [ebp - 4], 0x13
            //   e8????????           |                     
            //   837dcc08             | cmp                 dword ptr [ebp - 0x34], 8
            //   720c                 | jb                  0xe
            //   8b45b8               | mov                 eax, dword ptr [ebp - 0x48]

        $sequence_9 = { 83c404 51 e8???????? 83c404 8d95d88bffff 52 }
            // n = 6, score = 100
            //   83c404               | add                 esp, 4
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8d95d88bffff         | lea                 edx, [ebp - 0x7428]
            //   52                   | push                edx

    condition:
        7 of them and filesize < 524288
}