rule win_remcos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.remcos"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { ff15???????? 8d4d08 ff15???????? 8d4d18 }
            // n = 4, score = 1400
            //   ff15????????         |                     
            //   8d4d08               | lea                 ecx, [ebp + 8]
            //   ff15????????         |                     
            //   8d4d18               | lea                 ecx, [ebp + 0x18]

        $sequence_1 = { 57 ff15???????? 85c0 8945fc 0f84f3000000 837e0400 7551 }
            // n = 7, score = 1400
            //   57                   | push                edi
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   0f84f3000000         | je                  0xf9
            //   837e0400             | cmp                 dword ptr [esi + 4], 0
            //   7551                 | jne                 0x53

        $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 = { 57 e8???????? 6a01 57 e8???????? 83c414 }
            // n = 6, score = 1400
            //   57                   | push                edi
            //   e8????????           |                     
            //   6a01                 | push                1
            //   57                   | push                edi
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14

        $sequence_4 = { 47 ff4d0c 8a4c0bff 8808 803c3700 75d8 5b }
            // n = 7, score = 1400
            //   47                   | inc                 edi
            //   ff4d0c               | dec                 dword ptr [ebp + 0xc]
            //   8a4c0bff             | mov                 cl, byte ptr [ebx + ecx - 1]
            //   8808                 | mov                 byte ptr [eax], cl
            //   803c3700             | cmp                 byte ptr [edi + esi], 0
            //   75d8                 | jne                 0xffffffda
            //   5b                   | pop                 ebx

        $sequence_5 = { 50 e8???????? 83c40c 8bce ff7608 50 e8???????? }
            // n = 7, score = 1400
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8bce                 | mov                 ecx, esi
            //   ff7608               | push                dword ptr [esi + 8]
            //   50                   | push                eax
            //   e8????????           |                     

        $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 = { 8d4ddc ff15???????? 5f 5e }
            // n = 4, score = 1400
            //   8d4ddc               | lea                 ecx, [ebp - 0x24]
            //   ff15????????         |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_8 = { 8bf8 ff15???????? 3bf8 729b }
            // n = 4, score = 1400
            //   8bf8                 | mov                 edi, eax
            //   ff15????????         |                     
            //   3bf8                 | cmp                 edi, eax
            //   729b                 | jb                  0xffffff9d

        $sequence_9 = { 59 740f ff7608 8bc8 ff75fc e8???????? eb02 }
            // n = 7, score = 1400
            //   59                   | pop                 ecx
            //   740f                 | je                  0x11
            //   ff7608               | push                dword ptr [esi + 8]
            //   8bc8                 | mov                 ecx, eax
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   e8????????           |                     
            //   eb02                 | jmp                 4

    condition:
        7 of them and filesize < 368640
}