rule win_phobos_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.phobos"
        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 = { 59 5f c3 53 56 6a28 e8???????? }
            // n = 7, score = 100
            //   59                   | pop                 ecx
            //   5f                   | pop                 edi
            //   c3                   | ret                 
            //   53                   | push                ebx
            //   56                   | push                esi
            //   6a28                 | push                0x28
            //   e8????????           |                     

        $sequence_1 = { 8d45f8 56 50 e8???????? 59 59 3bde }
            // n = 7, score = 100
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   56                   | push                esi
            //   50                   | push                eax
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   3bde                 | cmp                 ebx, esi

        $sequence_2 = { 894df8 8b4858 894df4 8b485c 894de4 8b4864 }
            // n = 6, score = 100
            //   894df8               | mov                 dword ptr [ebp - 8], ecx
            //   8b4858               | mov                 ecx, dword ptr [eax + 0x58]
            //   894df4               | mov                 dword ptr [ebp - 0xc], ecx
            //   8b485c               | mov                 ecx, dword ptr [eax + 0x5c]
            //   894de4               | mov                 dword ptr [ebp - 0x1c], ecx
            //   8b4864               | mov                 ecx, dword ptr [eax + 0x64]

        $sequence_3 = { 0fb74dfc 8908 8b450c e8???????? 8bc8 8b4508 e8???????? }
            // n = 7, score = 100
            //   0fb74dfc             | movzx               ecx, word ptr [ebp - 4]
            //   8908                 | mov                 dword ptr [eax], ecx
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   e8????????           |                     
            //   8bc8                 | mov                 ecx, eax
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   e8????????           |                     

        $sequence_4 = { e8???????? 59 59 ff45f4 837dd800 743e 837dec00 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   ff45f4               | inc                 dword ptr [ebp - 0xc]
            //   837dd800             | cmp                 dword ptr [ebp - 0x28], 0
            //   743e                 | je                  0x40
            //   837dec00             | cmp                 dword ptr [ebp - 0x14], 0

        $sequence_5 = { e8???????? 59 8945fc 8975e4 ff15???????? 6a40 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   8975e4               | mov                 dword ptr [ebp - 0x1c], esi
            //   ff15????????         |                     
            //   6a40                 | push                0x40

        $sequence_6 = { 8bec 5d e9???????? 53 56 8bf0 0fbf4604 }
            // n = 7, score = 100
            //   8bec                 | mov                 ebp, esp
            //   5d                   | pop                 ebp
            //   e9????????           |                     
            //   53                   | push                ebx
            //   56                   | push                esi
            //   8bf0                 | mov                 esi, eax
            //   0fbf4604             | movsx               eax, word ptr [esi + 4]

        $sequence_7 = { e8???????? 8b06 8bc8 2b4e08 83c40c 014e0c }
            // n = 6, score = 100
            //   e8????????           |                     
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   8bc8                 | mov                 ecx, eax
            //   2b4e08               | sub                 ecx, dword ptr [esi + 8]
            //   83c40c               | add                 esp, 0xc
            //   014e0c               | add                 dword ptr [esi + 0xc], ecx

        $sequence_8 = { 55 8bec 83ec10 56 57 6a03 5e }
            // n = 7, score = 100
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83ec10               | sub                 esp, 0x10
            //   56                   | push                esi
            //   57                   | push                edi
            //   6a03                 | push                3
            //   5e                   | pop                 esi

        $sequence_9 = { ff15???????? 5d c3 55 8bec 837d0c00 7507 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   837d0c00             | cmp                 dword ptr [ebp + 0xc], 0
            //   7507                 | jne                 9

    condition:
        7 of them and filesize < 139264
}