rule win_olympic_destroyer_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        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 = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { 50 57 ff74241c e8???????? 83c40c eb35 }
            // n = 6, score = 100
            //   50                   | push                eax
            //   57                   | push                edi
            //   ff74241c             | push                dword ptr [esp + 0x1c]
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   eb35                 | jmp                 0x37

        $sequence_2 = { 50 57 ff7514 ff5510 83c410 85c0 0f854f010000 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   57                   | push                edi
            //   ff7514               | push                dword ptr [ebp + 0x14]
            //   ff5510               | call                dword ptr [ebp + 0x10]
            //   83c410               | add                 esp, 0x10
            //   85c0                 | test                eax, eax
            //   0f854f010000         | jne                 0x155

        $sequence_3 = { b98c43ca2e e8???????? b929159b92 8bf0 e8???????? }
            // n = 5, score = 100
            //   b98c43ca2e           | mov                 ecx, 0x2eca438c
            //   e8????????           |                     
            //   b929159b92           | mov                 ecx, 0x929b1529
            //   8bf0                 | mov                 esi, eax
            //   e8????????           |                     

        $sequence_4 = { 59 eb0b 8b8d90f9ffff e8???????? }
            // n = 4, score = 100
            //   59                   | pop                 ecx
            //   eb0b                 | jmp                 0xd
            //   8b8d90f9ffff         | mov                 ecx, dword ptr [ebp - 0x670]
            //   e8????????           |                     

        $sequence_5 = { 50 57 ff74241c 8bce 89442458 e8???????? }
            // n = 6, score = 100
            //   50                   | push                eax
            //   57                   | push                edi
            //   ff74241c             | push                dword ptr [esp + 0x1c]
            //   8bce                 | mov                 ecx, esi
            //   89442458             | mov                 dword ptr [esp + 0x58], eax
            //   e8????????           |                     

        $sequence_6 = { 50 57 ff742424 e8???????? 8b542428 }
            // n = 5, score = 100
            //   50                   | push                eax
            //   57                   | push                edi
            //   ff742424             | push                dword ptr [esp + 0x24]
            //   e8????????           |                     
            //   8b542428             | mov                 edx, dword ptr [esp + 0x28]

        $sequence_7 = { ff7004 ff15???????? 85f6 7409 ff7604 }
            // n = 5, score = 100
            //   ff7004               | push                dword ptr [eax + 4]
            //   ff15????????         |                     
            //   85f6                 | test                esi, esi
            //   7409                 | je                  0xb
            //   ff7604               | push                dword ptr [esi + 4]

        $sequence_8 = { 3b5d00 7295 8b442418 5f 5e }
            // n = 5, score = 100
            //   3b5d00               | cmp                 ebx, dword ptr [ebp]
            //   7295                 | jb                  0xffffff97
            //   8b442418             | mov                 eax, dword ptr [esp + 0x18]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_9 = { 8944240c 85c0 7440 8d44243c }
            // n = 4, score = 100
            //   8944240c             | mov                 dword ptr [esp + 0xc], eax
            //   85c0                 | test                eax, eax
            //   7440                 | je                  0x42
            //   8d44243c             | lea                 eax, dword ptr [esp + 0x3c]

        $sequence_10 = { 50 660f138510ffffff e8???????? 83c404 }
            // n = 4, score = 100
            //   50                   | push                eax
            //   660f138510ffffff     | movlpd              qword ptr [ebp - 0xf0], xmm0
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

        $sequence_11 = { 8b75e4 c3 53 56 }
            // n = 4, score = 100
            //   8b75e4               | mov                 esi, dword ptr [ebp - 0x1c]
            //   c3                   | ret                 
            //   53                   | push                ebx
            //   56                   | push                esi

        $sequence_12 = { 8d4dfc 51 ff75fc 8945d8 }
            // n = 4, score = 100
            //   8d4dfc               | lea                 ecx, dword ptr [ebp - 4]
            //   51                   | push                ecx
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   8945d8               | mov                 dword ptr [ebp - 0x28], eax

        $sequence_13 = { ff15???????? e9???????? 8b3d???????? 6a02 56 6aff }
            // n = 6, score = 100
            //   ff15????????         |                     
            //   e9????????           |                     
            //   8b3d????????         |                     
            //   6a02                 | push                2
            //   56                   | push                esi
            //   6aff                 | push                -1

        $sequence_14 = { 5d 5b 83c440 c3 5f 8bc6 5e }
            // n = 7, score = 100
            //   5d                   | pop                 ebp
            //   5b                   | pop                 ebx
            //   83c440               | add                 esp, 0x40
            //   c3                   | ret                 
            //   5f                   | pop                 edi
            //   8bc6                 | mov                 eax, esi
            //   5e                   | pop                 esi

        $sequence_15 = { 50 57 ffb5f0cfffff ffd3 }
            // n = 4, score = 100
            //   50                   | push                eax
            //   57                   | push                edi
            //   ffb5f0cfffff         | push                dword ptr [ebp - 0x3010]
            //   ffd3                 | call                ebx

        $sequence_16 = { 89bd80f7ffff 33c0 668985b0f7ffff 8dbdc4f7ffff }
            // n = 4, score = 100
            //   89bd80f7ffff         | mov                 dword ptr [ebp - 0x880], edi
            //   33c0                 | xor                 eax, eax
            //   668985b0f7ffff       | mov                 word ptr [ebp - 0x850], ax
            //   8dbdc4f7ffff         | lea                 edi, dword ptr [ebp - 0x83c]

        $sequence_17 = { 50 57 ff75d4 ff75dc }
            // n = 4, score = 100
            //   50                   | push                eax
            //   57                   | push                edi
            //   ff75d4               | push                dword ptr [ebp - 0x2c]
            //   ff75dc               | push                dword ptr [ebp - 0x24]

        $sequence_18 = { ff442414 8b442414 83c620 3b442418 }
            // n = 4, score = 100
            //   ff442414             | inc                 dword ptr [esp + 0x14]
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   83c620               | add                 esi, 0x20
            //   3b442418             | cmp                 eax, dword ptr [esp + 0x18]

        $sequence_19 = { 8b4004 51 ff30 ff15???????? e9???????? 56 6a40 }
            // n = 7, score = 100
            //   8b4004               | mov                 eax, dword ptr [eax + 4]
            //   51                   | push                ecx
            //   ff30                 | push                dword ptr [eax]
            //   ff15????????         |                     
            //   e9????????           |                     
            //   56                   | push                esi
            //   6a40                 | push                0x40

        $sequence_20 = { 8b3d???????? 50 ffd7 6a0f ffd6 }
            // n = 5, score = 100
            //   8b3d????????         |                     
            //   50                   | push                eax
            //   ffd7                 | call                edi
            //   6a0f                 | push                0xf
            //   ffd6                 | call                esi

        $sequence_21 = { 0f95c0 85f6 51 0f1144241c 8d04c508000000 }
            // n = 5, score = 100
            //   0f95c0               | setne               al
            //   85f6                 | test                esi, esi
            //   51                   | push                ecx
            //   0f1144241c           | movups              xmmword ptr [esp + 0x1c], xmm0
            //   8d04c508000000       | lea                 eax, dword ptr [eax*8 + 8]

        $sequence_22 = { 56 56 50 8975f8 ffd3 ff75f8 6a08 }
            // n = 7, score = 100
            //   56                   | push                esi
            //   56                   | push                esi
            //   50                   | push                eax
            //   8975f8               | mov                 dword ptr [ebp - 8], esi
            //   ffd3                 | call                ebx
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   6a08                 | push                8

    condition:
        7 of them and filesize < 1392640
}