rule win_remcos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-05-30"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.remcos"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        malpedia_license = "CC BY-NC-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 / approach 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 = { 037d08 035d08 894608 c7460400bc3a12 }
            // n = 4, score = 1400
            //   037d08               | add                 edi, dword ptr [ebp + 8]
            //   035d08               | add                 ebx, dword ptr [ebp + 8]
            //   894608               | mov                 dword ptr [esi + 8], eax
            //   c7460400bc3a12       | mov                 dword ptr [esi + 4], 0x123abc00

        $sequence_1 = { a5 a5 a5 50 ff31 }
            // n = 5, score = 1400
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   50                   | push                eax
            //   ff31                 | push                dword ptr [ecx]

        $sequence_2 = { 8d4df0 e8???????? 8bc8 ff15???????? 50 e8???????? }
            // n = 6, score = 1400
            //   8d4df0               | lea                 ecx, [ebp - 0x10]
            //   e8????????           |                     
            //   8bc8                 | mov                 ecx, eax
            //   ff15????????         |                     
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_3 = { 8bc8 ff15???????? 50 ff15???????? 69c0e8030000 }
            // n = 5, score = 1400
            //   8bc8                 | mov                 ecx, eax
            //   ff15????????         |                     
            //   50                   | push                eax
            //   ff15????????         |                     
            //   69c0e8030000         | imul                eax, eax, 0x3e8

        $sequence_4 = { 51 50 8bce e8???????? 8b4608 ff7510 }
            // n = 6, score = 1400
            //   51                   | push                ecx
            //   50                   | push                eax
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   8b4608               | mov                 eax, dword ptr [esi + 8]
            //   ff7510               | push                dword ptr [ebp + 0x10]

        $sequence_5 = { ff7608 ff7508 e8???????? ff7608 8bce ff7604 }
            // n = 6, score = 1400
            //   ff7608               | push                dword ptr [esi + 8]
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   ff7608               | push                dword ptr [esi + 8]
            //   8bce                 | mov                 ecx, esi
            //   ff7604               | push                dword ptr [esi + 4]

        $sequence_6 = { 5b 99 f7fb 3bc7 7348 8b4508 8d1c7f }
            // n = 7, score = 1400
            //   5b                   | pop                 ebx
            //   99                   | cdq                 
            //   f7fb                 | idiv                ebx
            //   3bc7                 | cmp                 eax, edi
            //   7348                 | jae                 0x4a
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8d1c7f               | lea                 ebx, [edi + edi*2]

        $sequence_7 = { e8???????? 83c418 015e08 5f }
            // n = 4, score = 1400
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18
            //   015e08               | add                 dword ptr [esi + 8], ebx
            //   5f                   | pop                 edi

        $sequence_8 = { 8bce e8???????? 8b00 3b4508 753a 57 8bce }
            // n = 7, score = 1400
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   3b4508               | cmp                 eax, dword ptr [ebp + 8]
            //   753a                 | jne                 0x3c
            //   57                   | push                edi
            //   8bce                 | mov                 ecx, esi

        $sequence_9 = { ff15???????? 0fbe450c 83c0d0 83f807 }
            // n = 4, score = 1400
            //   ff15????????         |                     
            //   0fbe450c             | movsx               eax, byte ptr [ebp + 0xc]
            //   83c0d0               | add                 eax, -0x30
            //   83f807               | cmp                 eax, 7

    condition:
        7 of them and filesize < 368640
}