rule win_amadey_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-06-10"
        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 = "20210604"
        malpedia_hash = "be09d5d71e77373c0f538068be31a2ad4c69cfbd"
        malpedia_version = "20210616"
        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???????? 8d85f89fffff 890424 e8???????? }
            // n = 4, score = 700
            //   e8????????           |                     
            //   8d85f89fffff         | lea                 eax, dword ptr [ebp - 0x6008]
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     

        $sequence_1 = { 890424 e8???????? 89c3 c7442404???????? 8b4508 890424 e8???????? }
            // n = 7, score = 700
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   89c3                 | mov                 ebx, eax
            //   c7442404????????     |                     
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     

        $sequence_2 = { 8d85f8fdffff 89442404 891424 e8???????? 83ec20 c70424???????? }
            // n = 6, score = 700
            //   8d85f8fdffff         | lea                 eax, dword ptr [ebp - 0x208]
            //   89442404             | mov                 dword ptr [esp + 4], eax
            //   891424               | mov                 dword ptr [esp], edx
            //   e8????????           |                     
            //   83ec20               | sub                 esp, 0x20
            //   c70424????????       |                     

        $sequence_3 = { 55 89e5 b828600000 e8???????? c785f49fffff00000000 c785f09fffffffffffff }
            // n = 6, score = 700
            //   55                   | push                ebp
            //   89e5                 | mov                 ebp, esp
            //   b828600000           | mov                 eax, 0x6028
            //   e8????????           |                     
            //   c785f49fffff00000000     | mov    dword ptr [ebp - 0x600c], 0
            //   c785f09fffffffffffff     | mov    dword ptr [ebp - 0x6010], 0xffffffff

        $sequence_4 = { e8???????? 89c2 c744241c00020000 8d85f8fbffff }
            // n = 4, score = 700
            //   e8????????           |                     
            //   89c2                 | mov                 edx, eax
            //   c744241c00020000     | mov                 dword ptr [esp + 0x1c], 0x200
            //   8d85f8fbffff         | lea                 eax, dword ptr [ebp - 0x408]

        $sequence_5 = { e8???????? c7442404???????? c70424???????? e8???????? 89442408 c744240401000000 }
            // n = 6, score = 700
            //   e8????????           |                     
            //   c7442404????????     |                     
            //   c70424????????       |                     
            //   e8????????           |                     
            //   89442408             | mov                 dword ptr [esp + 8], eax
            //   c744240401000000     | mov                 dword ptr [esp + 4], 1

        $sequence_6 = { 750a c705????????0f000000 a1???????? 898514ffffff 8b8514ffffff c9 }
            // n = 6, score = 700
            //   750a                 | jne                 0xc
            //   c705????????0f000000     |     
            //   a1????????           |                     
            //   898514ffffff         | mov                 dword ptr [ebp - 0xec], eax
            //   8b8514ffffff         | mov                 eax, dword ptr [ebp - 0xec]
            //   c9                   | leave               

        $sequence_7 = { 89e5 83ec28 c70424???????? e8???????? 890424 e8???????? }
            // n = 6, score = 700
            //   89e5                 | mov                 ebp, esp
            //   83ec28               | sub                 esp, 0x28
            //   c70424????????       |                     
            //   e8????????           |                     
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     

        $sequence_8 = { 83ec20 c70424???????? e8???????? 8b95ecfbffff 89d0 c1e003 29d0 }
            // n = 7, score = 700
            //   83ec20               | sub                 esp, 0x20
            //   c70424????????       |                     
            //   e8????????           |                     
            //   8b95ecfbffff         | mov                 edx, dword ptr [ebp - 0x414]
            //   89d0                 | mov                 eax, edx
            //   c1e003               | shl                 eax, 3
            //   29d0                 | sub                 eax, edx

        $sequence_9 = { e8???????? 8945f4 837df40a 0f842e010000 837df40b 0f8424010000 8d85e8fdffff }
            // n = 7, score = 700
            //   e8????????           |                     
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   837df40a             | cmp                 dword ptr [ebp - 0xc], 0xa
            //   0f842e010000         | je                  0x134
            //   837df40b             | cmp                 dword ptr [ebp - 0xc], 0xb
            //   0f8424010000         | je                  0x12a
            //   8d85e8fdffff         | lea                 eax, dword ptr [ebp - 0x218]

    condition:
        7 of them and filesize < 264192
}