rule win_andromut_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.andromut"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 352a640000 40 66894455e0 42 83fa0d }
            // n = 5, score = 200
            //   352a640000           | xor                 eax, 0x642a
            //   40                   | inc                 eax
            //   66894455e0           | mov                 word ptr [ebp + edx*2 - 0x20], ax
            //   42                   | inc                 edx
            //   83fa0d               | cmp                 edx, 0xd

        $sequence_1 = { 898554f9ffff 89bd58f9ffff 89bd5cf9ffff 89b544f9ffff e8???????? 8d8d40f9ffff 51 }
            // n = 7, score = 200
            //   898554f9ffff         | mov                 dword ptr [ebp - 0x6ac], eax
            //   89bd58f9ffff         | mov                 dword ptr [ebp - 0x6a8], edi
            //   89bd5cf9ffff         | mov                 dword ptr [ebp - 0x6a4], edi
            //   89b544f9ffff         | mov                 dword ptr [ebp - 0x6bc], esi
            //   e8????????           |                     
            //   8d8d40f9ffff         | lea                 ecx, [ebp - 0x6c0]
            //   51                   | push                ecx

        $sequence_2 = { c740140f000000 895810 8818 807d8700 895dfc c78568ffffff01000000 }
            // n = 6, score = 200
            //   c740140f000000       | mov                 dword ptr [eax + 0x14], 0xf
            //   895810               | mov                 dword ptr [eax + 0x10], ebx
            //   8818                 | mov                 byte ptr [eax], bl
            //   807d8700             | cmp                 byte ptr [ebp - 0x79], 0
            //   895dfc               | mov                 dword ptr [ebp - 4], ebx
            //   c78568ffffff01000000     | mov    dword ptr [ebp - 0x98], 1

        $sequence_3 = { 83c40c b930f3f9e4 e8???????? 8d8d64faffff 51 6805010000 ffd0 }
            // n = 7, score = 200
            //   83c40c               | add                 esp, 0xc
            //   b930f3f9e4           | mov                 ecx, 0xe4f9f330
            //   e8????????           |                     
            //   8d8d64faffff         | lea                 ecx, [ebp - 0x59c]
            //   51                   | push                ecx
            //   6805010000           | push                0x105
            //   ffd0                 | call                eax

        $sequence_4 = { e8???????? 68???????? 8d8d70e3ffff e8???????? 8d8570e3ffff }
            // n = 5, score = 200
            //   e8????????           |                     
            //   68????????           |                     
            //   8d8d70e3ffff         | lea                 ecx, [ebp - 0x1c90]
            //   e8????????           |                     
            //   8d8570e3ffff         | lea                 eax, [ebp - 0x1c90]

        $sequence_5 = { 75f5 be???????? 6a05 59 f3a5 66a5 e9???????? }
            // n = 7, score = 200
            //   75f5                 | jne                 0xfffffff7
            //   be????????           |                     
            //   6a05                 | push                5
            //   59                   | pop                 ecx
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   66a5                 | movsw               word ptr es:[edi], word ptr [esi]
            //   e9????????           |                     

        $sequence_6 = { c745f4a383a483 668945f8 0fb74475e0 8bd0 0fb7ce c1ea0e 83e203 }
            // n = 7, score = 200
            //   c745f4a383a483       | mov                 dword ptr [ebp - 0xc], 0x83a483a3
            //   668945f8             | mov                 word ptr [ebp - 8], ax
            //   0fb74475e0           | movzx               eax, word ptr [ebp + esi*2 - 0x20]
            //   8bd0                 | mov                 edx, eax
            //   0fb7ce               | movzx               ecx, si
            //   c1ea0e               | shr                 edx, 0xe
            //   83e203               | and                 edx, 3

        $sequence_7 = { 83c102 663bc7 75f5 2bca 8d8534ffffff d1f9 51 }
            // n = 7, score = 200
            //   83c102               | add                 ecx, 2
            //   663bc7               | cmp                 ax, di
            //   75f5                 | jne                 0xfffffff7
            //   2bca                 | sub                 ecx, edx
            //   8d8534ffffff         | lea                 eax, [ebp - 0xcc]
            //   d1f9                 | sar                 ecx, 1
            //   51                   | push                ecx

        $sequence_8 = { 8365fc00 33c0 8b7508 33db 8b7d0c 2bfe }
            // n = 6, score = 200
            //   8365fc00             | and                 dword ptr [ebp - 4], 0
            //   33c0                 | xor                 eax, eax
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   33db                 | xor                 ebx, ebx
            //   8b7d0c               | mov                 edi, dword ptr [ebp + 0xc]
            //   2bfe                 | sub                 edi, esi

        $sequence_9 = { c645ff01 8d7120 5f 8a02 42 884620 8806 }
            // n = 7, score = 200
            //   c645ff01             | mov                 byte ptr [ebp - 1], 1
            //   8d7120               | lea                 esi, [ecx + 0x20]
            //   5f                   | pop                 edi
            //   8a02                 | mov                 al, byte ptr [edx]
            //   42                   | inc                 edx
            //   884620               | mov                 byte ptr [esi + 0x20], al
            //   8806                 | mov                 byte ptr [esi], al

    condition:
        7 of them and filesize < 368640
}