rule win_remcos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.remcos"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 8d4d28 ff15???????? 8d4d38 ff15???????? }
            // n = 4, score = 1400
            //   8d4d28               | lea                 ecx, [ebp + 0x28]
            //   ff15????????         |                     
            //   8d4d38               | lea                 ecx, [ebp + 0x38]
            //   ff15????????         |                     

        $sequence_1 = { 8bce 53 e8???????? 50 8bce ff7508 8945fc }
            // n = 7, score = 1400
            //   8bce                 | mov                 ecx, esi
            //   53                   | push                ebx
            //   e8????????           |                     
            //   50                   | push                eax
            //   8bce                 | mov                 ecx, esi
            //   ff7508               | push                dword ptr [ebp + 8]
            //   8945fc               | mov                 dword ptr [ebp - 4], eax

        $sequence_2 = { 7410 6a00 ff35???????? ff15???????? }
            // n = 4, score = 1400
            //   7410                 | je                  0x12
            //   6a00                 | push                0
            //   ff35????????         |                     
            //   ff15????????         |                     

        $sequence_3 = { ff15???????? 6a01 8d4df0 e8???????? 8bc8 ff15???????? }
            // n = 6, score = 1400
            //   ff15????????         |                     
            //   6a01                 | push                1
            //   8d4df0               | lea                 ecx, [ebp - 0x10]
            //   e8????????           |                     
            //   8bc8                 | mov                 ecx, eax
            //   ff15????????         |                     

        $sequence_4 = { 56 57 8d85e0feffff 6804010000 }
            // n = 4, score = 1400
            //   56                   | push                esi
            //   57                   | push                edi
            //   8d85e0feffff         | lea                 eax, [ebp - 0x120]
            //   6804010000           | push                0x104

        $sequence_5 = { 57 8bf9 e8???????? 8b7508 3bc6 7707 8bcf }
            // n = 7, score = 1400
            //   57                   | push                edi
            //   8bf9                 | mov                 edi, ecx
            //   e8????????           |                     
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   3bc6                 | cmp                 eax, esi
            //   7707                 | ja                  9
            //   8bcf                 | mov                 ecx, edi

        $sequence_6 = { 99 f7fb 3bc7 7348 8b4508 }
            // n = 5, score = 1400
            //   99                   | cdq                 
            //   f7fb                 | idiv                ebx
            //   3bc7                 | cmp                 eax, edi
            //   7348                 | jae                 0x4a
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]

        $sequence_7 = { 2bc8 c1f904 51 50 8bce e8???????? }
            // n = 6, score = 1400
            //   2bc8                 | sub                 ecx, eax
            //   c1f904               | sar                 ecx, 4
            //   51                   | push                ecx
            //   50                   | push                eax
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     

        $sequence_8 = { 8bec 56 8bf1 83660400 837d0c00 8d4604 }
            // n = 6, score = 1400
            //   8bec                 | mov                 ebp, esp
            //   56                   | push                esi
            //   8bf1                 | mov                 esi, ecx
            //   83660400             | and                 dword ptr [esi + 4], 0
            //   837d0c00             | cmp                 dword ptr [ebp + 0xc], 0
            //   8d4604               | lea                 eax, [esi + 4]

        $sequence_9 = { ff15???????? 50 ff15???????? 6a01 58 3945fc 7402 }
            // n = 7, score = 1400
            //   ff15????????         |                     
            //   50                   | push                eax
            //   ff15????????         |                     
            //   6a01                 | push                1
            //   58                   | pop                 eax
            //   3945fc               | cmp                 dword ptr [ebp - 4], eax
            //   7402                 | je                  4

    condition:
        7 of them and filesize < 368640
}