rule win_amadey_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        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 = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 89442410 8d85ecfbffff 8944240c c744240800020000 8d85f8fdffff 89442404 891424 }
            // n = 7, score = 700
            //   89442410             | mov                 dword ptr [esp + 0x10], eax
            //   8d85ecfbffff         | lea                 eax, [ebp - 0x414]
            //   8944240c             | mov                 dword ptr [esp + 0xc], eax
            //   c744240800020000     | mov                 dword ptr [esp + 8], 0x200
            //   8d85f8fdffff         | lea                 eax, [ebp - 0x208]
            //   89442404             | mov                 dword ptr [esp + 4], eax
            //   891424               | mov                 dword ptr [esp], edx

        $sequence_1 = { 8d85f8efffff 890424 e8???????? c7442404???????? }
            // n = 4, score = 700
            //   8d85f8efffff         | lea                 eax, [ebp - 0x1008]
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   c7442404????????     |                     

        $sequence_2 = { c744240401000000 8d85f8dfffff 890424 e8???????? 890424 e8???????? }
            // n = 6, score = 700
            //   c744240401000000     | mov                 dword ptr [esp + 4], 1
            //   8d85f8dfffff         | lea                 eax, [ebp - 0x2008]
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     

        $sequence_3 = { e8???????? 83ec28 894594 837d9400 0f95c0 0fb6c0 }
            // n = 6, score = 700
            //   e8????????           |                     
            //   83ec28               | sub                 esp, 0x28
            //   894594               | mov                 dword ptr [ebp - 0x6c], eax
            //   837d9400             | cmp                 dword ptr [ebp - 0x6c], 0
            //   0f95c0               | setne               al
            //   0fb6c0               | movzx               eax, al

        $sequence_4 = { e8???????? 84c0 7520 c745fc01000000 8b45fc 83f801 }
            // n = 6, score = 700
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7520                 | jne                 0x22
            //   c745fc01000000       | mov                 dword ptr [ebp - 4], 1
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   83f801               | cmp                 eax, 1

        $sequence_5 = { c785e4feffff00000000 8b85e4feffff c9 c3 }
            // n = 4, score = 700
            //   c785e4feffff00000000     | mov    dword ptr [ebp - 0x11c], 0
            //   8b85e4feffff         | mov                 eax, dword ptr [ebp - 0x11c]
            //   c9                   | leave               
            //   c3                   | ret                 

        $sequence_6 = { 890424 e8???????? 84c0 7407 c745fc0a000000 c70424???????? e8???????? }
            // n = 7, score = 700
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7407                 | je                  9
            //   c745fc0a000000       | mov                 dword ptr [ebp - 4], 0xa
            //   c70424????????       |                     
            //   e8????????           |                     

        $sequence_7 = { 890424 e8???????? 40 895c2408 }
            // n = 4, score = 700
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   40                   | inc                 eax
            //   895c2408             | mov                 dword ptr [esp + 8], ebx

        $sequence_8 = { 008d22410009 204100 0920 41 }
            // n = 4, score = 100
            //   008d22410009         | add                 byte ptr [ebp + 0x9004122], cl
            //   204100               | and                 byte ptr [ecx], al
            //   0920                 | or                  dword ptr [eax], esp
            //   41                   | inc                 ecx

        $sequence_9 = { 0009 204100 4f 234100 }
            // n = 4, score = 100
            //   0009                 | add                 byte ptr [ecx], cl
            //   204100               | and                 byte ptr [ecx], al
            //   4f                   | dec                 edi
            //   234100               | and                 eax, dword ptr [ecx]

        $sequence_10 = { 03148d008f4300 8b00 894218 8a441f04 }
            // n = 4, score = 100
            //   03148d008f4300       | add                 edx, dword ptr [ecx*4 + 0x438f00]
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   894218               | mov                 dword ptr [edx + 0x18], eax
            //   8a441f04             | mov                 al, byte ptr [edi + ebx + 4]

        $sequence_11 = { 03348d008f4300 837e18ff 740c 837e18fe }
            // n = 4, score = 100
            //   03348d008f4300       | add                 esi, dword ptr [ecx*4 + 0x438f00]
            //   837e18ff             | cmp                 dword ptr [esi + 0x18], -1
            //   740c                 | je                  0xe
            //   837e18fe             | cmp                 dword ptr [esi + 0x18], -2

        $sequence_12 = { 00558b ec 6aff 68???????? 64a100000000 50 83ec60 }
            // n = 7, score = 100
            //   00558b               | add                 byte ptr [ebp - 0x75], dl
            //   ec                   | in                  al, dx
            //   6aff                 | push                -1
            //   68????????           |                     
            //   64a100000000         | mov                 eax, dword ptr fs:[0]
            //   50                   | push                eax
            //   83ec60               | sub                 esp, 0x60

        $sequence_13 = { 03048d008f4300 50 ff15???????? 5d }
            // n = 4, score = 100
            //   03048d008f4300       | add                 eax, dword ptr [ecx*4 + 0x438f00]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   5d                   | pop                 ebp

        $sequence_14 = { 0035???????? 214100 2022 41 }
            // n = 4, score = 100
            //   0035????????         |                     
            //   214100               | and                 dword ptr [ecx], eax
            //   2022                 | and                 byte ptr [edx], ah
            //   41                   | inc                 ecx

        $sequence_15 = { 034e3c 6a00 ffb108010000 8b810c010000 }
            // n = 4, score = 100
            //   034e3c               | add                 ecx, dword ptr [esi + 0x3c]
            //   6a00                 | push                0
            //   ffb108010000         | push                dword ptr [ecx + 0x108]
            //   8b810c010000         | mov                 eax, dword ptr [ecx + 0x10c]

    condition:
        7 of them and filesize < 520192
}