rule win_olympic_destroyer_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-06-10"
        version = "1"
        description = "Detects win.olympic_destroyer."
        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.olympic_destroyer"
        malpedia_rule_date = "20210604"
        malpedia_hash = "be09d5d71e77373c0f538068be31a2ad4c69cfbd"
        malpedia_version = "20210616"
        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 = { 56 33c0 89542414 57 }
            // n = 4, score = 200
            //   56                   | push                esi
            //   33c0                 | xor                 eax, eax
            //   89542414             | mov                 dword ptr [esp + 0x14], edx
            //   57                   | push                edi

        $sequence_1 = { 6a08 68???????? e8???????? 68???????? ff15???????? 8b7508 c7465cd86b4000 }
            // n = 7, score = 100
            //   6a08                 | push                8
            //   68????????           |                     
            //   e8????????           |                     
            //   68????????           |                     
            //   ff15????????         |                     
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   c7465cd86b4000       | mov                 dword ptr [esi + 0x5c], 0x406bd8

        $sequence_2 = { c744242400400000 ff15???????? 85c0 0f85b3000000 ff742410 }
            // n = 5, score = 100
            //   c744242400400000     | mov                 dword ptr [esp + 0x24], 0x4000
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   0f85b3000000         | jne                 0xb9
            //   ff742410             | push                dword ptr [esp + 0x10]

        $sequence_3 = { 50 6800100000 8d85fcefffff 50 57 ff15???????? 85c0 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   6800100000           | push                0x1000
            //   8d85fcefffff         | lea                 eax, dword ptr [ebp - 0x1004]
            //   50                   | push                eax
            //   57                   | push                edi
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax

        $sequence_4 = { 4b 85f6 7450 8b4018 }
            // n = 4, score = 100
            //   4b                   | dec                 ebx
            //   85f6                 | test                esi, esi
            //   7450                 | je                  0x52
            //   8b4018               | mov                 eax, dword ptr [eax + 0x18]

        $sequence_5 = { 6a08 8d4c2428 89442410 e8???????? }
            // n = 4, score = 100
            //   6a08                 | push                8
            //   8d4c2428             | lea                 ecx, dword ptr [esp + 0x28]
            //   89442410             | mov                 dword ptr [esp + 0x10], eax
            //   e8????????           |                     

        $sequence_6 = { 894c2434 85c9 0f886c040000 a1???????? }
            // n = 4, score = 100
            //   894c2434             | mov                 dword ptr [esp + 0x34], ecx
            //   85c9                 | test                ecx, ecx
            //   0f886c040000         | js                  0x472
            //   a1????????           |                     

        $sequence_7 = { 4b c745f800000000 c7450800000000 83ff02 }
            // n = 4, score = 100
            //   4b                   | dec                 ebx
            //   c745f800000000       | mov                 dword ptr [ebp - 8], 0
            //   c7450800000000       | mov                 dword ptr [ebp + 8], 0
            //   83ff02               | cmp                 edi, 2

        $sequence_8 = { 8d4f0c 56 e8???????? 83c404 b801000000 5f 5e }
            // n = 7, score = 100
            //   8d4f0c               | lea                 ecx, dword ptr [edi + 0xc]
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   b801000000           | mov                 eax, 1
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_9 = { 8d6bf8 eb19 3db8240000 730a bb28000000 }
            // n = 5, score = 100
            //   8d6bf8               | lea                 ebp, dword ptr [ebx - 8]
            //   eb19                 | jmp                 0x1b
            //   3db8240000           | cmp                 eax, 0x24b8
            //   730a                 | jae                 0xc
            //   bb28000000           | mov                 ebx, 0x28

        $sequence_10 = { 53 ffd7 56 8d85e4efffff 50 6a01 }
            // n = 6, score = 100
            //   53                   | push                ebx
            //   ffd7                 | call                edi
            //   56                   | push                esi
            //   8d85e4efffff         | lea                 eax, dword ptr [ebp - 0x101c]
            //   50                   | push                eax
            //   6a01                 | push                1

        $sequence_11 = { 4b eb65 85c9 7e3d }
            // n = 4, score = 100
            //   4b                   | dec                 ebx
            //   eb65                 | jmp                 0x67
            //   85c9                 | test                ecx, ecx
            //   7e3d                 | jle                 0x3f

        $sequence_12 = { 4e 0fb74212 8bca 83c220 }
            // n = 4, score = 100
            //   4e                   | dec                 esi
            //   0fb74212             | movzx               eax, word ptr [edx + 0x12]
            //   8bca                 | mov                 ecx, edx
            //   83c220               | add                 edx, 0x20

        $sequence_13 = { 8b0c8560ee5500 8b45e8 f644012880 7446 0fbec3 83e800 }
            // n = 6, score = 100
            //   8b0c8560ee5500       | mov                 ecx, dword ptr [eax*4 + 0x55ee60]
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]
            //   f644012880           | test                byte ptr [ecx + eax + 0x28], 0x80
            //   7446                 | je                  0x48
            //   0fbec3               | movsx               eax, bl
            //   83e800               | sub                 eax, 0

        $sequence_14 = { 0f454c2414 894c240c 8b15???????? 8d4e10 }
            // n = 4, score = 100
            //   0f454c2414           | cmovne              ecx, dword ptr [esp + 0x14]
            //   894c240c             | mov                 dword ptr [esp + 0xc], ecx
            //   8b15????????         |                     
            //   8d4e10               | lea                 ecx, dword ptr [esi + 0x10]

        $sequence_15 = { 4b 85db 0f8e02f9ffff 8b7df8 }
            // n = 4, score = 100
            //   4b                   | dec                 ebx
            //   85db                 | test                ebx, ebx
            //   0f8e02f9ffff         | jle                 0xfffff908
            //   8b7df8               | mov                 edi, dword ptr [ebp - 8]

        $sequence_16 = { 4e 03f2 89742440 8b44241c }
            // n = 4, score = 100
            //   4e                   | dec                 esi
            //   03f2                 | add                 esi, edx
            //   89742440             | mov                 dword ptr [esp + 0x40], esi
            //   8b44241c             | mov                 eax, dword ptr [esp + 0x1c]

        $sequence_17 = { ffd6 50 ffd7 6a00 e8???????? }
            // n = 5, score = 100
            //   ffd6                 | call                esi
            //   50                   | push                eax
            //   ffd7                 | call                edi
            //   6a00                 | push                0
            //   e8????????           |                     

        $sequence_18 = { 4b 894df8 85d2 0f84ad000000 8b4204 33f6 }
            // n = 6, score = 100
            //   4b                   | dec                 ebx
            //   894df8               | mov                 dword ptr [ebp - 8], ecx
            //   85d2                 | test                edx, edx
            //   0f84ad000000         | je                  0xb3
            //   8b4204               | mov                 eax, dword ptr [edx + 4]
            //   33f6                 | xor                 esi, esi

        $sequence_19 = { 33c0 8dbdecefffff 6800100000 89b5e8efffff }
            // n = 4, score = 100
            //   33c0                 | xor                 eax, eax
            //   8dbdecefffff         | lea                 edi, dword ptr [ebp - 0x1014]
            //   6800100000           | push                0x1000
            //   89b5e8efffff         | mov                 dword ptr [ebp - 0x1018], esi

        $sequence_20 = { 8b4048 f00fc118 4b 7515 8b45fc 817848f8d45500 7409 }
            // n = 7, score = 100
            //   8b4048               | mov                 eax, dword ptr [eax + 0x48]
            //   f00fc118             | lock xadd           dword ptr [eax], ebx
            //   4b                   | dec                 ebx
            //   7515                 | jne                 0x17
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   817848f8d45500       | cmp                 dword ptr [eax + 0x48], 0x55d4f8
            //   7409                 | je                  0xb

        $sequence_21 = { 56 ff15???????? cc 3b0d???????? 7502 f3c3 }
            // n = 6, score = 100
            //   56                   | push                esi
            //   ff15????????         |                     
            //   cc                   | int3                
            //   3b0d????????         |                     
            //   7502                 | jne                 4
            //   f3c3                 | ret                 

        $sequence_22 = { 817c242403010000 0f8570ffffff 56 ff15???????? ff74241c }
            // n = 5, score = 100
            //   817c242403010000     | cmp                 dword ptr [esp + 0x24], 0x103
            //   0f8570ffffff         | jne                 0xffffff76
            //   56                   | push                esi
            //   ff15????????         |                     
            //   ff74241c             | push                dword ptr [esp + 0x1c]

    condition:
        7 of them and filesize < 1392640
}