rule win_remcos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-08-17"
        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 = "20200817"
        malpedia_hash = "8c895fd01eccb47a6225bcb1a3ba53cbb98644c5"
        malpedia_version = "20200817"
        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 / 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 = { e8???????? 8d4dec ff15???????? 8d4d0c ff15???????? 8d4d1c ff15???????? }
            // n = 7, score = 1400
            //   e8????????           |                     
            //   8d4dec               | lea                 ecx, [ebp - 0x14]
            //   ff15????????         |                     
            //   8d4d0c               | lea                 ecx, [ebp + 0xc]
            //   ff15????????         |                     
            //   8d4d1c               | lea                 ecx, [ebp + 0x1c]
            //   ff15????????         |                     

        $sequence_1 = { ff15???????? 50 e8???????? 83c40c 84c0 }
            // n = 5, score = 1400
            //   ff15????????         |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   84c0                 | test                al, al

        $sequence_2 = { ff15???????? f7d8 1bc0 5e f7d8 c9 }
            // n = 6, score = 1400
            //   ff15????????         |                     
            //   f7d8                 | neg                 eax
            //   1bc0                 | sbb                 eax, eax
            //   5e                   | pop                 esi
            //   f7d8                 | neg                 eax
            //   c9                   | leave               

        $sequence_3 = { 803e00 742d 53 89750c }
            // n = 4, score = 1400
            //   803e00               | cmp                 byte ptr [esi], 0
            //   742d                 | je                  0x2f
            //   53                   | push                ebx
            //   89750c               | mov                 dword ptr [ebp + 0xc], esi

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

        $sequence_5 = { ff7510 ff7608 ff7508 e8???????? 83c40c 017e08 eb36 }
            // n = 7, score = 1400
            //   ff7510               | push                dword ptr [ebp + 0x10]
            //   ff7608               | push                dword ptr [esi + 8]
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   017e08               | add                 dword ptr [esi + 8], edi
            //   eb36                 | jmp                 0x38

        $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 = { 7418 56 57 8b7d10 }
            // n = 4, score = 1400
            //   7418                 | je                  0x1a
            //   56                   | push                esi
            //   57                   | push                edi
            //   8b7d10               | mov                 edi, dword ptr [ebp + 0x10]

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

        $sequence_9 = { 3bc2 8901 7602 8911 b001 eb02 }
            // n = 6, score = 1400
            //   3bc2                 | cmp                 eax, edx
            //   8901                 | mov                 dword ptr [ecx], eax
            //   7602                 | jbe                 4
            //   8911                 | mov                 dword ptr [ecx], edx
            //   b001                 | mov                 al, 1
            //   eb02                 | jmp                 4

    condition:
        7 of them and filesize < 368640
}