rule win_scieron_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.scieron."
        info = "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.scieron"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 5e c9 c3 8b85dcfdffff ebf5 }
            // n = 5, score = 100
            //   5e                   | pop                 esi
            //   c9                   | leave               
            //   c3                   | ret                 
            //   8b85dcfdffff         | mov                 eax, dword ptr [ebp - 0x224]
            //   ebf5                 | jmp                 0xfffffff7

        $sequence_1 = { 8b442410 69c050020000 05???????? 50 ff74241c ff15???????? }
            // n = 6, score = 100
            //   8b442410             | mov                 eax, dword ptr [esp + 0x10]
            //   69c050020000         | imul                eax, eax, 0x250
            //   05????????           |                     
            //   50                   | push                eax
            //   ff74241c             | push                dword ptr [esp + 0x1c]
            //   ff15????????         |                     

        $sequence_2 = { 685cee0000 8935???????? ff15???????? 68???????? }
            // n = 4, score = 100
            //   685cee0000           | push                0xee5c
            //   8935????????         |                     
            //   ff15????????         |                     
            //   68????????           |                     

        $sequence_3 = { e8???????? 8bf8 83c410 85ff 7432 }
            // n = 5, score = 100
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   83c410               | add                 esp, 0x10
            //   85ff                 | test                edi, edi
            //   7432                 | je                  0x34

        $sequence_4 = { 8bf8 56 83ffff 754d ff15???????? }
            // n = 5, score = 100
            //   8bf8                 | mov                 edi, eax
            //   56                   | push                esi
            //   83ffff               | cmp                 edi, -1
            //   754d                 | jne                 0x4f
            //   ff15????????         |                     

        $sequence_5 = { eb65 8b4734 50 894574 8d472c 50 }
            // n = 6, score = 100
            //   eb65                 | jmp                 0x67
            //   8b4734               | mov                 eax, dword ptr [edi + 0x34]
            //   50                   | push                eax
            //   894574               | mov                 dword ptr [ebp + 0x74], eax
            //   8d472c               | lea                 eax, [edi + 0x2c]
            //   50                   | push                eax

        $sequence_6 = { 6a40 ff15???????? 8903 85c0 742e 0fb74df6 51 }
            // n = 7, score = 100
            //   6a40                 | push                0x40
            //   ff15????????         |                     
            //   8903                 | mov                 dword ptr [ebx], eax
            //   85c0                 | test                eax, eax
            //   742e                 | je                  0x30
            //   0fb74df6             | movzx               ecx, word ptr [ebp - 0xa]
            //   51                   | push                ecx

        $sequence_7 = { e9???????? 53 55 55 56 }
            // n = 5, score = 100
            //   e9????????           |                     
            //   53                   | push                ebx
            //   55                   | push                ebp
            //   55                   | push                ebp
            //   56                   | push                esi

        $sequence_8 = { 53 6a40 ffd7 85c0 7417 6a00 56 }
            // n = 7, score = 100
            //   53                   | push                ebx
            //   6a40                 | push                0x40
            //   ffd7                 | call                edi
            //   85c0                 | test                eax, eax
            //   7417                 | je                  0x19
            //   6a00                 | push                0
            //   56                   | push                esi

        $sequence_9 = { 83a61c02000000 33c0 40 5f 5d }
            // n = 5, score = 100
            //   83a61c02000000       | and                 dword ptr [esi + 0x21c], 0
            //   33c0                 | xor                 eax, eax
            //   40                   | inc                 eax
            //   5f                   | pop                 edi
            //   5d                   | pop                 ebp

    condition:
        7 of them and filesize < 100352
}