rule win_flame_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.flame."
        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.flame"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 741a 83f901 7415 e8???????? c70016000000 e8???????? 83c8ff }
            // n = 7, score = 400
            //   741a                 | je                  0x1c
            //   83f901               | cmp                 ecx, 1
            //   7415                 | je                  0x17
            //   e8????????           |                     
            //   c70016000000         | mov                 dword ptr [eax], 0x16
            //   e8????????           |                     
            //   83c8ff               | or                  eax, 0xffffffff

        $sequence_1 = { ff7508 ff15???????? c70424???????? ff7508 ff15???????? 59 59 }
            // n = 7, score = 200
            //   ff7508               | je                  0x1a
            //   ff15????????         |                     
            //   c70424????????       |                     
            //   ff7508               | mov                 dword ptr [eax], 0x16
            //   ff15????????         |                     
            //   59                   | test                ecx, ecx
            //   59                   | je                  0x1c

        $sequence_2 = { 7404 6afd ebd2 57 56 }
            // n = 5, score = 200
            //   7404                 | je                  0x1c
            //   6afd                 | cmp                 ecx, 1
            //   ebd2                 | je                  0x1c
            //   57                   | mov                 dword ptr [eax], 0x16
            //   56                   | cmp                 ecx, 1

        $sequence_3 = { 2bc8 8b01 89450c 8d450c }
            // n = 4, score = 200
            //   2bc8                 | cmp                 ecx, ebx
            //   8b01                 | jbe                 0xffffff32
            //   89450c               | inc                 esp
            //   8d450c               | mov                 ebp, dword ptr [ebp - 0x5c]

        $sequence_4 = { 8038b8 75f4 33c9 8178011e000d00 0f94c1 894dec }
            // n = 6, score = 200
            //   8038b8               | add                 esi, edi
            //   75f4                 | test                eax, eax
            //   33c9                 | je                  0x30
            //   8178011e000d00       | mov                 edx, dword ptr [ebp]
            //   0f94c1               | mov                 esi, dword ptr [ebp - 0x60]
            //   894dec               | inc                 ebp

        $sequence_5 = { 7429 488b4c2428 488d542450 41b8df010000 }
            // n = 4, score = 200
            //   7429                 | dec                 ecx
            //   488b4c2428           | mov                 edx, dword ptr [esi + 0x10]
            //   488d542450           | mov                 ecx, dword ptr [edi + 0x18]
            //   41b8df010000         | mov                 eax, ebx

        $sequence_6 = { ffd7 90 eb00 4883c430 5f 5e }
            // n = 6, score = 200
            //   ffd7                 | mov                 ecx, dword ptr [esp + 0x28]
            //   90                   | dec                 eax
            //   eb00                 | lea                 edx, [esp + 0x50]
            //   4883c430             | inc                 ecx
            //   5f                   | mov                 eax, 0x1df
            //   5e                   | je                  0x2b

        $sequence_7 = { 8b45ec c645fc02 8d4dec 51 50 6a0d }
            // n = 6, score = 200
            //   8b45ec               | mov                 esi, dword ptr [ebx + 0x24]
            //   c645fc02             | inc                 ebp
            //   8d4dec               | xor                 esp, esp
            //   51                   | dec                 eax
            //   50                   | add                 ebp, edi
            //   6a0d                 | dec                 eax

        $sequence_8 = { 7428 448865dc 41c1ec08 488d55dc }
            // n = 4, score = 200
            //   7428                 | lea                 edx, [esp + 0x50]
            //   448865dc             | inc                 ecx
            //   41c1ec08             | mov                 eax, 0x1df
            //   488d55dc             | test                eax, eax

        $sequence_9 = { 8b7324 4533e4 4803ef 4803f7 }
            // n = 4, score = 200
            //   8b7324               | inc                 esp
            //   4533e4               | mov                 byte ptr [ebp - 0x23], ah
            //   4803ef               | je                  0x2a
            //   4803f7               | inc                 esp

        $sequence_10 = { 897de8 885dfc 68???????? 8d45bc eb9f 8b460c 8b4806 }
            // n = 7, score = 200
            //   897de8               | je                  0x1c
            //   885dfc               | cmp                 ecx, 1
            //   68????????           |                     
            //   8d45bc               | je                  0x17
            //   eb9f                 | mov                 dword ptr [eax], 0x16
            //   8b460c               | je                  0x1c
            //   8b4806               | cmp                 ecx, 1

        $sequence_11 = { 7428 41b918000000 4533c0 488bd0 c744242050000000 ff15???????? }
            // n = 6, score = 200
            //   7428                 | dec                 eax
            //   41b918000000         | mov                 ecx, dword ptr [esp + 0x28]
            //   4533c0               | dec                 eax
            //   488bd0               | lea                 edx, [esp + 0x50]
            //   c744242050000000     | inc                 ecx
            //   ff15????????         |                     

        $sequence_12 = { 8b7008 83fe2a 7421 83fe45 }
            // n = 4, score = 200
            //   8b7008               | mov                 ecx, 0x18
            //   83fe2a               | inc                 ebp
            //   7421                 | xor                 eax, eax
            //   83fe45               | dec                 eax

        $sequence_13 = { e8???????? 68???????? 8d8508ffffff 50 e8???????? 8b4d08 83791410 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   68????????           |                     
            //   8d8508ffffff         | cmp                 ecx, 1
            //   50                   | je                  0x1c
            //   e8????????           |                     
            //   8b4d08               | mov                 dword ptr [eax], 0x16
            //   83791410             | test                ecx, ecx

        $sequence_14 = { 7428 498b5610 8b4f18 8bc3 }
            // n = 4, score = 200
            //   7428                 | je                  0x2a
            //   498b5610             | dec                 ecx
            //   8b4f18               | mov                 edx, dword ptr [esi + 0x10]
            //   8bc3                 | mov                 ecx, dword ptr [edi + 0x18]

    condition:
        7 of them and filesize < 1676288
}