rule win_mirage_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.mirage."
        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.mirage"
        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 = { 8bd8 59 85db 59 0f84d1000000 57 }
            // n = 6, score = 200
            //   8bd8                 | mov                 ebx, eax
            //   59                   | pop                 ecx
            //   85db                 | test                ebx, ebx
            //   59                   | pop                 ecx
            //   0f84d1000000         | je                  0xd7
            //   57                   | push                edi

        $sequence_1 = { 8bec 81ec14010000 53 56 8d45f8 57 }
            // n = 6, score = 200
            //   8bec                 | mov                 ebp, esp
            //   81ec14010000         | sub                 esp, 0x114
            //   53                   | push                ebx
            //   56                   | push                esi
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   57                   | push                edi

        $sequence_2 = { 68???????? 6801000080 ff15???????? 85c0 7556 }
            // n = 5, score = 200
            //   68????????           |                     
            //   6801000080           | push                0x80000001
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7556                 | jne                 0x58

        $sequence_3 = { 68???????? ff75f8 c745fc04010000 ffd6 ff75f8 }
            // n = 5, score = 200
            //   68????????           |                     
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   c745fc04010000       | mov                 dword ptr [ebp - 4], 0x104
            //   ffd6                 | call                esi
            //   ff75f8               | push                dword ptr [ebp - 8]

        $sequence_4 = { 50 53 68???????? c745f804010000 ff75fc ff15???????? ff75fc }
            // n = 7, score = 200
            //   50                   | push                eax
            //   53                   | push                ebx
            //   68????????           |                     
            //   c745f804010000       | mov                 dword ptr [ebp - 8], 0x104
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   ff15????????         |                     
            //   ff75fc               | push                dword ptr [ebp - 4]

        $sequence_5 = { 3bf3 0f85a9000000 381f 0f84a1000000 8d85ecfeffff 68???????? 50 }
            // n = 7, score = 200
            //   3bf3                 | cmp                 esi, ebx
            //   0f85a9000000         | jne                 0xaf
            //   381f                 | cmp                 byte ptr [edi], bl
            //   0f84a1000000         | je                  0xa7
            //   8d85ecfeffff         | lea                 eax, [ebp - 0x114]
            //   68????????           |                     
            //   50                   | push                eax

        $sequence_6 = { 50 53 e8???????? 8d8588feffff }
            // n = 4, score = 200
            //   50                   | push                eax
            //   53                   | push                ebx
            //   e8????????           |                     
            //   8d8588feffff         | lea                 eax, [ebp - 0x178]

        $sequence_7 = { 50 8d857cfdffff 50 ff15???????? eb12 8d450d 50 }
            // n = 7, score = 200
            //   50                   | push                eax
            //   8d857cfdffff         | lea                 eax, [ebp - 0x284]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   eb12                 | jmp                 0x14
            //   8d450d               | lea                 eax, [ebp + 0xd]
            //   50                   | push                eax

        $sequence_8 = { 741e 8d8590fcffff 50 8d8590fdffff 50 e8???????? 8b45e4 }
            // n = 7, score = 200
            //   741e                 | je                  0x20
            //   8d8590fcffff         | lea                 eax, [ebp - 0x370]
            //   50                   | push                eax
            //   8d8590fdffff         | lea                 eax, [ebp - 0x270]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]

        $sequence_9 = { 0f8494010000 205dff 209dc4f6ffff b9ff010000 33c0 }
            // n = 5, score = 200
            //   0f8494010000         | je                  0x19a
            //   205dff               | and                 byte ptr [ebp - 1], bl
            //   209dc4f6ffff         | and                 byte ptr [ebp - 0x93c], bl
            //   b9ff010000           | mov                 ecx, 0x1ff
            //   33c0                 | xor                 eax, eax

        $sequence_10 = { e8???????? 8d85a4e3ffff 50 68???????? 68???????? }
            // n = 5, score = 100
            //   e8????????           |                     
            //   8d85a4e3ffff         | lea                 eax, [ebp - 0x1c5c]
            //   50                   | push                eax
            //   68????????           |                     
            //   68????????           |                     

        $sequence_11 = { 6a01 50 8d85f0f7ffff 50 }
            // n = 4, score = 100
            //   6a01                 | push                1
            //   50                   | push                eax
            //   8d85f0f7ffff         | lea                 eax, [ebp - 0x810]
            //   50                   | push                eax

        $sequence_12 = { 57 51 e8???????? 59 50 8d4604 50 }
            // n = 7, score = 100
            //   57                   | push                edi
            //   51                   | push                ecx
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   50                   | push                eax
            //   8d4604               | lea                 eax, [esi + 4]
            //   50                   | push                eax

        $sequence_13 = { ff75dc ff75ec 53 53 }
            // n = 4, score = 100
            //   ff75dc               | push                dword ptr [ebp - 0x24]
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   53                   | push                ebx
            //   53                   | push                ebx

        $sequence_14 = { 50 8d45fc 50 6805000020 ffb30c080000 }
            // n = 5, score = 100
            //   50                   | push                eax
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   50                   | push                eax
            //   6805000020           | push                0x20000005
            //   ffb30c080000         | push                dword ptr [ebx + 0x80c]

        $sequence_15 = { 59 f7f9 a1???????? 83c207 8d3c10 897de8 }
            // n = 6, score = 100
            //   59                   | pop                 ecx
            //   f7f9                 | idiv                ecx
            //   a1????????           |                     
            //   83c207               | add                 edx, 7
            //   8d3c10               | lea                 edi, [eax + edx]
            //   897de8               | mov                 dword ptr [ebp - 0x18], edi

    condition:
        7 of them and filesize < 1695744
}