rule win_amadey_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        version = "1"
        description = "Detects win.amadey."
        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.amadey"
        malpedia_rule_date = "20220513"
        malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26"
        malpedia_version = "20220516"
        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???????? 89442404 8d45c8 890424 e8???????? c744240801000000 }
            // n = 6, score = 700
            //   e8????????           |                     
            //   89442404             | mov                 dword ptr [esp + 4], eax
            //   8d45c8               | lea                 eax, [ebp - 0x38]
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   c744240801000000     | mov                 dword ptr [esp + 8], 1

        $sequence_1 = { c70424???????? e8???????? c70424???????? e8???????? c744240824000000 c744240400000000 }
            // n = 6, score = 700
            //   c70424????????       |                     
            //   e8????????           |                     
            //   c70424????????       |                     
            //   e8????????           |                     
            //   c744240824000000     | mov                 dword ptr [esp + 8], 0x24
            //   c744240400000000     | mov                 dword ptr [esp + 4], 0

        $sequence_2 = { 8985ecdfffff 8b85f0dfffff 8944240c c744240800020000 c744240401000000 }
            // n = 5, score = 700
            //   8985ecdfffff         | mov                 dword ptr [ebp - 0x2014], eax
            //   8b85f0dfffff         | mov                 eax, dword ptr [ebp - 0x2010]
            //   8944240c             | mov                 dword ptr [esp + 0xc], eax
            //   c744240800020000     | mov                 dword ptr [esp + 8], 0x200
            //   c744240401000000     | mov                 dword ptr [esp + 4], 1

        $sequence_3 = { e8???????? 8d85f8bfffff 890424 e8???????? 2b85f49fffff 89442408 8b85f49fffff }
            // n = 7, score = 700
            //   e8????????           |                     
            //   8d85f8bfffff         | lea                 eax, [ebp - 0x4008]
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   2b85f49fffff         | sub                 eax, dword ptr [ebp - 0x600c]
            //   89442408             | mov                 dword ptr [esp + 8], eax
            //   8b85f49fffff         | mov                 eax, dword ptr [ebp - 0x600c]

        $sequence_4 = { c70424???????? e8???????? b8???????? c9 c3 55 89e5 }
            // n = 7, score = 700
            //   c70424????????       |                     
            //   e8????????           |                     
            //   b8????????           |                     
            //   c9                   | leave               
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   89e5                 | mov                 ebp, esp

        $sequence_5 = { 8d45b8 890424 e8???????? 83ec04 85c0 741f }
            // n = 6, score = 700
            //   8d45b8               | lea                 eax, [ebp - 0x48]
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   83ec04               | sub                 esp, 4
            //   85c0                 | test                eax, eax
            //   741f                 | je                  0x21

        $sequence_6 = { 89e5 83ec08 c745fc00000000 e8???????? }
            // n = 4, score = 700
            //   89e5                 | mov                 ebp, esp
            //   83ec08               | sub                 esp, 8
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   e8????????           |                     

        $sequence_7 = { c70424???????? e8???????? 8b95ecfbffff 89d0 c1e003 29d0 }
            // n = 6, score = 700
            //   c70424????????       |                     
            //   e8????????           |                     
            //   8b95ecfbffff         | mov                 edx, dword ptr [ebp - 0x414]
            //   89d0                 | mov                 eax, edx
            //   c1e003               | shl                 eax, 3
            //   29d0                 | sub                 eax, edx

        $sequence_8 = { 8d85e8feffff 890424 e8???????? 0fb6c0 }
            // n = 4, score = 700
            //   8d85e8feffff         | lea                 eax, [ebp - 0x118]
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   0fb6c0               | movzx               eax, al

        $sequence_9 = { c745fc05000000 c70424???????? e8???????? 890424 e8???????? }
            // n = 5, score = 700
            //   c745fc05000000       | mov                 dword ptr [ebp - 4], 5
            //   c70424????????       |                     
            //   e8????????           |                     
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     

    condition:
        7 of them and filesize < 264192
}