rule win_rockloader_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.rockloader."
        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.rockloader"
        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 = { 48 7407 880e e9???????? 8d5701 e8???????? 8bd8 }
            // n = 7, score = 300
            //   48                   | dec                 eax
            //   7407                 | je                  9
            //   880e                 | mov                 byte ptr [esi], cl
            //   e9????????           |                     
            //   8d5701               | lea                 edx, [edi + 1]
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax

        $sequence_1 = { 85c0 75d4 eba2 8b85dcfeffff 5f c9 c20800 }
            // n = 7, score = 300
            //   85c0                 | test                eax, eax
            //   75d4                 | jne                 0xffffffd6
            //   eba2                 | jmp                 0xffffffa4
            //   8b85dcfeffff         | mov                 eax, dword ptr [ebp - 0x124]
            //   5f                   | pop                 edi
            //   c9                   | leave               
            //   c20800               | ret                 8

        $sequence_2 = { e8???????? e9???????? 6a05 58 e8???????? 8bf8 85ff }
            // n = 7, score = 300
            //   e8????????           |                     
            //   e9????????           |                     
            //   6a05                 | push                5
            //   58                   | pop                 eax
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   85ff                 | test                edi, edi

        $sequence_3 = { eb02 ddd8 dd45e4 8b4d08 dc4dec 83650800 dec9 }
            // n = 7, score = 300
            //   eb02                 | jmp                 4
            //   ddd8                 | fstp                st(0)
            //   dd45e4               | fld                 qword ptr [ebp - 0x1c]
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   dc4dec               | fmul                qword ptr [ebp - 0x14]
            //   83650800             | and                 dword ptr [ebp + 8], 0
            //   dec9                 | fmulp               st(1)

        $sequence_4 = { 80383a 75b7 40 e8???????? 50 }
            // n = 5, score = 300
            //   80383a               | cmp                 byte ptr [eax], 0x3a
            //   75b7                 | jne                 0xffffffb9
            //   40                   | inc                 eax
            //   e8????????           |                     
            //   50                   | push                eax

        $sequence_5 = { 8bec 85f6 7423 8b4620 85c0 7407 50 }
            // n = 7, score = 300
            //   8bec                 | mov                 ebp, esp
            //   85f6                 | test                esi, esi
            //   7423                 | je                  0x25
            //   8b4620               | mov                 eax, dword ptr [esi + 0x20]
            //   85c0                 | test                eax, eax
            //   7407                 | je                  9
            //   50                   | push                eax

        $sequence_6 = { e8???????? eb07 50 ff15???????? 8bd8 85db 7489 }
            // n = 7, score = 300
            //   e8????????           |                     
            //   eb07                 | jmp                 9
            //   50                   | push                eax
            //   ff15????????         |                     
            //   8bd8                 | mov                 ebx, eax
            //   85db                 | test                ebx, ebx
            //   7489                 | je                  0xffffff8b

        $sequence_7 = { 8b7508 50 ff75fc 53 68???????? 68???????? }
            // n = 6, score = 300
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   50                   | push                eax
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   53                   | push                ebx
            //   68????????           |                     
            //   68????????           |                     

        $sequence_8 = { e8???????? 8b45fc 897d0c 8d7001 8a08 40 84c9 }
            // n = 7, score = 300
            //   e8????????           |                     
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   897d0c               | mov                 dword ptr [ebp + 0xc], edi
            //   8d7001               | lea                 esi, [eax + 1]
            //   8a08                 | mov                 cl, byte ptr [eax]
            //   40                   | inc                 eax
            //   84c9                 | test                cl, cl

        $sequence_9 = { 7435 e8???????? 8325????????00 8bf0 }
            // n = 4, score = 300
            //   7435                 | je                  0x37
            //   e8????????           |                     
            //   8325????????00       |                     
            //   8bf0                 | mov                 esi, eax

    condition:
        7 of them and filesize < 98304
}