rule win_bluelight_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.bluelight."
        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.bluelight"
        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 = { e9???????? 8d4dd8 e9???????? 8d4da4 e9???????? 8d4db0 e9???????? }
            // n = 7, score = 100
            //   e9????????           |                     
            //   8d4dd8               | lea                 ecx, [ebp - 0x28]
            //   e9????????           |                     
            //   8d4da4               | lea                 ecx, [ebp - 0x5c]
            //   e9????????           |                     
            //   8d4db0               | lea                 ecx, [ebp - 0x50]
            //   e9????????           |                     

        $sequence_1 = { eb04 2bc6 8bf0 81fe00280000 7605 33ff 47 }
            // n = 7, score = 100
            //   eb04                 | jmp                 6
            //   2bc6                 | sub                 eax, esi
            //   8bf0                 | mov                 esi, eax
            //   81fe00280000         | cmp                 esi, 0x2800
            //   7605                 | jbe                 7
            //   33ff                 | xor                 edi, edi
            //   47                   | inc                 edi

        $sequence_2 = { 8b4728 895ddc c60701 8945fc 0f8e77010000 8b00 8365e400 }
            // n = 7, score = 100
            //   8b4728               | mov                 eax, dword ptr [edi + 0x28]
            //   895ddc               | mov                 dword ptr [ebp - 0x24], ebx
            //   c60701               | mov                 byte ptr [edi], 1
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   0f8e77010000         | jle                 0x17d
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   8365e400             | and                 dword ptr [ebp - 0x1c], 0

        $sequence_3 = { eb15 33d2 8bce e8???????? eb0a 807e0505 7504 }
            // n = 7, score = 100
            //   eb15                 | jmp                 0x17
            //   33d2                 | xor                 edx, edx
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   eb0a                 | jmp                 0xc
            //   807e0505             | cmp                 byte ptr [esi + 5], 5
            //   7504                 | jne                 6

        $sequence_4 = { ff7594 50 e8???????? 83c410 837da800 7421 837da000 }
            // n = 7, score = 100
            //   ff7594               | push                dword ptr [ebp - 0x6c]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   837da800             | cmp                 dword ptr [ebp - 0x58], 0
            //   7421                 | je                  0x23
            //   837da000             | cmp                 dword ptr [ebp - 0x60], 0

        $sequence_5 = { e8???????? 8b45fc f7401c00400000 7426 8bce e8???????? eb16 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   f7401c00400000       | test                dword ptr [eax + 0x1c], 0x4000
            //   7426                 | je                  0x28
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   eb16                 | jmp                 0x18

        $sequence_6 = { ff770c e8???????? 83c414 8944240c 53 e8???????? 8b5c2410 }
            // n = 7, score = 100
            //   ff770c               | push                dword ptr [edi + 0xc]
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   8944240c             | mov                 dword ptr [esp + 0xc], eax
            //   53                   | push                ebx
            //   e8????????           |                     
            //   8b5c2410             | mov                 ebx, dword ptr [esp + 0x10]

        $sequence_7 = { eb13 8b442410 33d2 6a00 8bc8 897018 e8???????? }
            // n = 7, score = 100
            //   eb13                 | jmp                 0x15
            //   8b442410             | mov                 eax, dword ptr [esp + 0x10]
            //   33d2                 | xor                 edx, edx
            //   6a00                 | push                0
            //   8bc8                 | mov                 ecx, eax
            //   897018               | mov                 dword ptr [eax + 0x18], esi
            //   e8????????           |                     

        $sequence_8 = { 8bd8 894df4 8b4610 8b440804 8945ec 85c0 742c }
            // n = 7, score = 100
            //   8bd8                 | mov                 ebx, eax
            //   894df4               | mov                 dword ptr [ebp - 0xc], ecx
            //   8b4610               | mov                 eax, dword ptr [esi + 0x10]
            //   8b440804             | mov                 eax, dword ptr [eax + ecx + 4]
            //   8945ec               | mov                 dword ptr [ebp - 0x14], eax
            //   85c0                 | test                eax, eax
            //   742c                 | je                  0x2e

        $sequence_9 = { ff770c e8???????? 8b550c 8bcf 6aff e8???????? 6a00 }
            // n = 7, score = 100
            //   ff770c               | push                dword ptr [edi + 0xc]
            //   e8????????           |                     
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   8bcf                 | mov                 ecx, edi
            //   6aff                 | push                -1
            //   e8????????           |                     
            //   6a00                 | push                0

    condition:
        7 of them and filesize < 2191360
}