rule win_pirpi_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.pirpi"
        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 = { 894504 e9???????? 8b4c2414 8d442424 50 51 e8???????? }
            // n = 7, score = 200
            //   894504               | mov                 dword ptr [ebp + 4], eax
            //   e9????????           |                     
            //   8b4c2414             | mov                 ecx, dword ptr [esp + 0x14]
            //   8d442424             | lea                 eax, [esp + 0x24]
            //   50                   | push                eax
            //   51                   | push                ecx
            //   e8????????           |                     

        $sequence_1 = { 50 ff15???????? 8b4c2414 51 6a08 ffd5 50 }
            // n = 7, score = 200
            //   50                   | push                eax
            //   ff15????????         |                     
            //   8b4c2414             | mov                 ecx, dword ptr [esp + 0x14]
            //   51                   | push                ecx
            //   6a08                 | push                8
            //   ffd5                 | call                ebp
            //   50                   | push                eax

        $sequence_2 = { b920000000 33c0 8dbc24a0000000 68???????? f3ab 8b4c2414 50 }
            // n = 7, score = 200
            //   b920000000           | mov                 ecx, 0x20
            //   33c0                 | xor                 eax, eax
            //   8dbc24a0000000       | lea                 edi, [esp + 0xa0]
            //   68????????           |                     
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   8b4c2414             | mov                 ecx, dword ptr [esp + 0x14]
            //   50                   | push                eax

        $sequence_3 = { 8b4c2404 85c9 7413 51 }
            // n = 4, score = 200
            //   8b4c2404             | mov                 ecx, dword ptr [esp + 4]
            //   85c9                 | test                ecx, ecx
            //   7413                 | je                  0x15
            //   51                   | push                ecx

        $sequence_4 = { 6a64 894624 ffd7 8bcb e8???????? }
            // n = 5, score = 200
            //   6a64                 | push                0x64
            //   894624               | mov                 dword ptr [esi + 0x24], eax
            //   ffd7                 | call                edi
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     

        $sequence_5 = { 83c404 b802000000 5f 5e 5b 83c448 c20800 }
            // n = 7, score = 200
            //   83c404               | add                 esp, 4
            //   b802000000           | mov                 eax, 2
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   83c448               | add                 esp, 0x48
            //   c20800               | ret                 8

        $sequence_6 = { b806000000 81c400010000 c3 83e804 f7d8 1bc0 }
            // n = 6, score = 200
            //   b806000000           | mov                 eax, 6
            //   81c400010000         | add                 esp, 0x100
            //   c3                   | ret                 
            //   83e804               | sub                 eax, 4
            //   f7d8                 | neg                 eax
            //   1bc0                 | sbb                 eax, eax

        $sequence_7 = { b908000000 33c0 8d7c241c f3ab 8b441604 8d4c241c 6a20 }
            // n = 7, score = 200
            //   b908000000           | mov                 ecx, 8
            //   33c0                 | xor                 eax, eax
            //   8d7c241c             | lea                 edi, [esp + 0x1c]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   8b441604             | mov                 eax, dword ptr [esi + edx + 4]
            //   8d4c241c             | lea                 ecx, [esp + 0x1c]
            //   6a20                 | push                0x20

        $sequence_8 = { 8b8834010000 51 8bcd e8???????? 8b542420 }
            // n = 5, score = 200
            //   8b8834010000         | mov                 ecx, dword ptr [eax + 0x134]
            //   51                   | push                ecx
            //   8bcd                 | mov                 ecx, ebp
            //   e8????????           |                     
            //   8b542420             | mov                 edx, dword ptr [esp + 0x20]

        $sequence_9 = { ff15???????? 8b442418 6633c9 8bd0 32db }
            // n = 5, score = 200
            //   ff15????????         |                     
            //   8b442418             | mov                 eax, dword ptr [esp + 0x18]
            //   6633c9               | xor                 cx, cx
            //   8bd0                 | mov                 edx, eax
            //   32db                 | xor                 bl, bl

    condition:
        7 of them and filesize < 327680
}