rule win_andromut_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-08-17"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.andromut"
        malpedia_rule_date = "20200817"
        malpedia_hash = "8c895fd01eccb47a6225bcb1a3ba53cbb98644c5"
        malpedia_version = "20200817"
        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 / approach 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 = { 8bc6 83791410 7204 8b11 eb02 8bd1 }
            // n = 6, score = 200
            //   8bc6                 | mov                 eax, esi
            //   83791410             | cmp                 dword ptr [ecx + 0x14], 0x10
            //   7204                 | jb                  6
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   eb02                 | jmp                 4
            //   8bd1                 | mov                 edx, ecx

        $sequence_1 = { 8d8d40f9ffff 51 ffd0 85c0 7512 8b4dfc }
            // n = 6, score = 200
            //   8d8d40f9ffff         | lea                 ecx, [ebp - 0x6c0]
            //   51                   | push                ecx
            //   ffd0                 | call                eax
            //   85c0                 | test                eax, eax
            //   7512                 | jne                 0x14
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]

        $sequence_2 = { 83c40c c745b8029f02ae c745bc0696068f 8bfb c745c00297029e c745c40e880e8e c745c802db02a1 }
            // n = 7, score = 200
            //   83c40c               | add                 esp, 0xc
            //   c745b8029f02ae       | mov                 dword ptr [ebp - 0x48], 0xae029f02
            //   c745bc0696068f       | mov                 dword ptr [ebp - 0x44], 0x8f069606
            //   8bfb                 | mov                 edi, ebx
            //   c745c00297029e       | mov                 dword ptr [ebp - 0x40], 0x9e029702
            //   c745c40e880e8e       | mov                 dword ptr [ebp - 0x3c], 0x8e0e880e
            //   c745c802db02a1       | mov                 dword ptr [ebp - 0x38], 0xa102db02

        $sequence_3 = { 8d8dd4f8ffff 51 8d8dfcfcffff 51 ffd0 b974723dc5 e8???????? }
            // n = 7, score = 200
            //   8d8dd4f8ffff         | lea                 ecx, [ebp - 0x72c]
            //   51                   | push                ecx
            //   8d8dfcfcffff         | lea                 ecx, [ebp - 0x304]
            //   51                   | push                ecx
            //   ffd0                 | call                eax
            //   b974723dc5           | mov                 ecx, 0xc53d7274
            //   e8????????           |                     

        $sequence_4 = { 25ff3f0000 0bc1 66894475ec 46 83fe07 72bb 8d45ec }
            // n = 7, score = 200
            //   25ff3f0000           | and                 eax, 0x3fff
            //   0bc1                 | or                  eax, ecx
            //   66894475ec           | mov                 word ptr [ebp + esi*2 - 0x14], ax
            //   46                   | inc                 esi
            //   83fe07               | cmp                 esi, 7
            //   72bb                 | jb                  0xffffffbd
            //   8d45ec               | lea                 eax, [ebp - 0x14]

        $sequence_5 = { 50 8d85b8ebffff 50 8d8d40e3ffff e8???????? 83bd54e3ffff10 8db540e3ffff }
            // n = 7, score = 200
            //   50                   | push                eax
            //   8d85b8ebffff         | lea                 eax, [ebp - 0x1448]
            //   50                   | push                eax
            //   8d8d40e3ffff         | lea                 ecx, [ebp - 0x1cc0]
            //   e8????????           |                     
            //   83bd54e3ffff10       | cmp                 dword ptr [ebp - 0x1cac], 0x10
            //   8db540e3ffff         | lea                 esi, [ebp - 0x1cc0]

        $sequence_6 = { 03fb 663bc1 75f5 be???????? a5 a5 }
            // n = 6, score = 200
            //   03fb                 | add                 edi, ebx
            //   663bc1               | cmp                 ax, cx
            //   75f5                 | jne                 0xfffffff7
            //   be????????           |                     
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]

        $sequence_7 = { 59 8b4d88 3bf7 7ce2 }
            // n = 4, score = 200
            //   59                   | pop                 ecx
            //   8b4d88               | mov                 ecx, dword ptr [ebp - 0x78]
            //   3bf7                 | cmp                 esi, edi
            //   7ce2                 | jl                  0xffffffe4

        $sequence_8 = { e8???????? 83c40c 807d0801 7533 8bd3 8d8d58fdffff e8???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   807d0801             | cmp                 byte ptr [ebp + 8], 1
            //   7533                 | jne                 0x35
            //   8bd3                 | mov                 edx, ebx
            //   8d8d58fdffff         | lea                 ecx, [ebp - 0x2a8]
            //   e8????????           |                     

        $sequence_9 = { 668b4702 03fb 663bc1 75f5 be???????? ebba 85c0 }
            // n = 7, score = 200
            //   668b4702             | mov                 ax, word ptr [edi + 2]
            //   03fb                 | add                 edi, ebx
            //   663bc1               | cmp                 ax, cx
            //   75f5                 | jne                 0xfffffff7
            //   be????????           |                     
            //   ebba                 | jmp                 0xffffffbc
            //   85c0                 | test                eax, eax

    condition:
        7 of them and filesize < 368640
}