rule win_flame_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        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 = "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 = { 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 = { ff15???????? 59 85c0 7410 68???????? ff7508 ff15???????? }
            // n = 7, score = 200
            //   ff15????????         |                     
            //   59                   | cmp                 ecx, 1
            //   85c0                 | je                  0x1c
            //   7410                 | mov                 dword ptr [eax], 0x16
            //   68????????           |                     
            //   ff7508               | or                  eax, 0xffffffff
            //   ff15????????         |                     

        $sequence_2 = { 8b83f0160000 2bc6 3983f4160000 7540 8b8384000000 85c0 }
            // n = 6, score = 200
            //   8b83f0160000         | cmp                 dword ptr [ebx + 0x16f4], eax
            //   2bc6                 | inc                 ecx
            //   3983f4160000         | sete                dl
            //   7540                 | dec                 dword ptr [ebx + 0x9c]
            //   8b8384000000         | add                 dword ptr [ebx + 0x94], esi
            //   85c0                 | inc                 ebp

        $sequence_3 = { a3???????? 85c0 0f8453ffffff 68???????? ff35???????? }
            // n = 5, score = 200
            //   a3????????           |                     
            //   85c0                 | mov                 dword ptr [eax], 0x16
            //   0f8453ffffff         | or                  eax, 0xffffffff
            //   68????????           |                     
            //   ff35????????         |                     

        $sequence_4 = { 8975ec 8d45ec 50 6a01 }
            // n = 4, score = 200
            //   8975ec               | je                  0x1e
            //   8d45ec               | cmp                 ecx, 1
            //   50                   | je                  0x1e
            //   6a01                 | je                  0x1c

        $sequence_5 = { 51 ffd0 83c704 8b07 85c0 75ed 8b06 }
            // n = 7, score = 200
            //   51                   | cmp                 ecx, 1
            //   ffd0                 | je                  0x17
            //   83c704               | mov                 dword ptr [eax], 0x16
            //   8b07                 | test                ecx, ecx
            //   85c0                 | je                  0x1e
            //   75ed                 | cmp                 ecx, 1
            //   8b06                 | je                  0x1e

        $sequence_6 = { 8b83f0160000 2bc6 3983f4160000 410f94c2 ff8b9c000000 01b394000000 4585d2 }
            // n = 7, score = 200
            //   8b83f0160000         | test                ebx, ebx
            //   2bc6                 | jne                 0xfffffff0
            //   3983f4160000         | dec                 eax
            //   410f94c2             | mov                 ecx, edi
            //   ff8b9c000000         | dec                 eax
            //   01b394000000         | mov                 ebx, dword ptr [esp + 0x30]
            //   4585d2               | mov                 eax, dword ptr [ebx + 0xa0]

        $sequence_7 = { 8b83a0000000 413bc5 0f82c3010000 398388000000 0f87b7010000 8b8b94000000 8b839c000000 }
            // n = 7, score = 200
            //   8b83a0000000         | jne                 0xfffffff0
            //   413bc5               | dec                 eax
            //   0f82c3010000         | mov                 ecx, edi
            //   398388000000         | je                  0x1f
            //   0f87b7010000         | dec                 eax
            //   8b8b94000000         | mov                 ebx, dword ptr [ebx + 0x1c]
            //   8b839c000000         | dec                 eax

        $sequence_8 = { 68???????? ff7508 e9???????? 8d85e8feffff 50 8bce 33ff }
            // n = 7, score = 200
            //   68????????           |                     
            //   ff7508               | test                ecx, ecx
            //   e9????????           |                     
            //   8d85e8feffff         | je                  0x1e
            //   50                   | cmp                 ecx, 1
            //   8bce                 | je                  0x1e
            //   33ff                 | mov                 dword ptr [eax], 0x16

        $sequence_9 = { 741d 488b5b1c 4885db 75e7 }
            // n = 4, score = 200
            //   741d                 | pop                 esi
            //   488b5b1c             | je                  0x1f
            //   4885db               | dec                 eax
            //   75e7                 | mov                 ebx, dword ptr [ebx + 0x1c]

        $sequence_10 = { ffd7 90 eb00 4883c430 5f 5e }
            // n = 6, score = 200
            //   ffd7                 | call                edi
            //   90                   | nop                 
            //   eb00                 | jmp                 2
            //   4883c430             | dec                 eax
            //   5f                   | add                 esp, 0x30
            //   5e                   | pop                 edi

        $sequence_11 = { 8b842480000000 2bc1 4c03c8 413bcb 0f8389000000 }
            // n = 5, score = 200
            //   8b842480000000       | cmp                 dword ptr [ebx + 0x16f4], eax
            //   2bc1                 | jne                 0x4a
            //   4c03c8               | mov                 eax, dword ptr [ebx + 0x84]
            //   413bcb               | mov                 eax, dword ptr [ebx + 0x16f0]
            //   0f8389000000         | sub                 eax, esi

        $sequence_12 = { 8b86f0160000 8bc8 c1e102 894e18 4c396650 }
            // n = 5, score = 200
            //   8b86f0160000         | dec                 esp
            //   8bc8                 | add                 ecx, eax
            //   c1e102               | inc                 ecx
            //   894e18               | cmp                 ecx, ebx
            //   4c396650             | jae                 0x97

        $sequence_13 = { 837d0800 56 7420 8b35???????? eb14 ff7608 }
            // n = 6, score = 200
            //   837d0800             | je                  0x1c
            //   56                   | cmp                 ecx, 1
            //   7420                 | je                  0x1c
            //   8b35????????         |                     
            //   eb14                 | cmp                 ecx, 1
            //   ff7608               | je                  0x1a

        $sequence_14 = { 8b5e38 8b7e3c 8945ec 8b02 8945fc 8b4204 8945f8 }
            // n = 7, score = 200
            //   8b5e38               | cmp                 ecx, 1
            //   8b7e3c               | je                  0x1a
            //   8945ec               | mov                 dword ptr [eax], 0x16
            //   8b02                 | mov                 dword ptr [ebp - 0x14], esi
            //   8945fc               | lea                 eax, [ebp - 0x14]
            //   8b4204               | push                eax
            //   8945f8               | push                1

    condition:
        7 of them and filesize < 1676288
}