rule win_duqu_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.duqu."
        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.duqu"
        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 = { 8bec 81ec08020000 57 e8???????? 8bf8 813f40b75e07 }
            // n = 6, score = 400
            //   8bec                 | mov                 ebp, esp
            //   81ec08020000         | sub                 esp, 0x208
            //   57                   | push                edi
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   813f40b75e07         | cmp                 dword ptr [edi], 0x75eb740

        $sequence_1 = { 75c8 8bc8 e8???????? 8bd8 895c2414 }
            // n = 5, score = 400
            //   75c8                 | jne                 0xffffffca
            //   8bc8                 | mov                 ecx, eax
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   895c2414             | mov                 dword ptr [esp + 0x14], ebx

        $sequence_2 = { e8???????? 85c0 7465 e8???????? 85c0 }
            // n = 5, score = 400
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7465                 | je                  0x67
            //   e8????????           |                     
            //   85c0                 | test                eax, eax

        $sequence_3 = { 40 83c704 8944241c 3b4218 0f8272ffffff }
            // n = 5, score = 400
            //   40                   | inc                 eax
            //   83c704               | add                 edi, 4
            //   8944241c             | mov                 dword ptr [esp + 0x1c], eax
            //   3b4218               | cmp                 eax, dword ptr [edx + 0x18]
            //   0f8272ffffff         | jb                  0xffffff78

        $sequence_4 = { 85d2 7e22 0fb6c8 8bc1 0fafc9 }
            // n = 5, score = 400
            //   85d2                 | test                edx, edx
            //   7e22                 | jle                 0x24
            //   0fb6c8               | movzx               ecx, al
            //   8bc1                 | mov                 eax, ecx
            //   0fafc9               | imul                ecx, ecx

        $sequence_5 = { c70640b75e07 40 eb02 33c0 }
            // n = 4, score = 400
            //   c70640b75e07         | mov                 dword ptr [esi], 0x75eb740
            //   40                   | inc                 eax
            //   eb02                 | jmp                 4
            //   33c0                 | xor                 eax, eax

        $sequence_6 = { e8???????? ba4fa06028 894670 8bcb e8???????? }
            // n = 5, score = 400
            //   e8????????           |                     
            //   ba4fa06028           | mov                 edx, 0x2860a04f
            //   894670               | mov                 dword ptr [esi + 0x70], eax
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     

        $sequence_7 = { 56 51 8bf2 e8???????? }
            // n = 4, score = 400
            //   56                   | push                esi
            //   51                   | push                ecx
            //   8bf2                 | mov                 esi, edx
            //   e8????????           |                     

        $sequence_8 = { 2bca 66397202 740f 83c204 8b0411 33c7 }
            // n = 6, score = 400
            //   2bca                 | sub                 ecx, edx
            //   66397202             | cmp                 word ptr [edx + 2], si
            //   740f                 | je                  0x11
            //   83c204               | add                 edx, 4
            //   8b0411               | mov                 eax, dword ptr [ecx + edx]
            //   33c7                 | xor                 eax, edi

        $sequence_9 = { 8bcf e8???????? ba78978b33 89869c000000 8bcb }
            // n = 5, score = 400
            //   8bcf                 | mov                 ecx, edi
            //   e8????????           |                     
            //   ba78978b33           | mov                 edx, 0x338b9778
            //   89869c000000         | mov                 dword ptr [esi + 0x9c], eax
            //   8bcb                 | mov                 ecx, ebx

        $sequence_10 = { 8beb ebab 8bd5 ff542424 }
            // n = 4, score = 200
            //   8beb                 | mov                 ebp, ebx
            //   ebab                 | jmp                 0xffffffad
            //   8bd5                 | mov                 edx, ebp
            //   ff542424             | call                dword ptr [esp + 0x24]

        $sequence_11 = { 8bde 2b1d???????? 81fbff000000 7207 c745fc01000000 }
            // n = 5, score = 200
            //   8bde                 | mov                 ebx, esi
            //   2b1d????????         |                     
            //   81fbff000000         | cmp                 ebx, 0xff
            //   7207                 | jb                  9
            //   c745fc01000000       | mov                 dword ptr [ebp - 4], 1

        $sequence_12 = { 8be8 8bc6 2bc3 d1fd }
            // n = 4, score = 200
            //   8be8                 | mov                 ebp, eax
            //   8bc6                 | mov                 eax, esi
            //   2bc3                 | sub                 eax, ebx
            //   d1fd                 | sar                 ebp, 1

        $sequence_13 = { 8be8 3bee 7509 5f }
            // n = 4, score = 200
            //   8be8                 | mov                 ebp, eax
            //   3bee                 | cmp                 ebp, esi
            //   7509                 | jne                 0xb
            //   5f                   | pop                 edi

        $sequence_14 = { 8be8 ffd6 85db 741e }
            // n = 4, score = 200
            //   8be8                 | mov                 ebp, eax
            //   ffd6                 | call                esi
            //   85db                 | test                ebx, ebx
            //   741e                 | je                  0x20

        $sequence_15 = { 8bdf 8995dcfbffff 8995ccf3ffff c785bcebfffffeffffff }
            // n = 4, score = 200
            //   8bdf                 | mov                 ebx, edi
            //   8995dcfbffff         | mov                 dword ptr [ebp - 0x424], edx
            //   8995ccf3ffff         | mov                 dword ptr [ebp - 0xc34], edx
            //   c785bcebfffffeffffff     | mov    dword ptr [ebp - 0x1444], 0xfffffffe

    condition:
        7 of them and filesize < 18759680
}