rule win_andromut_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-05-30"
        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 = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        malpedia_license = "CC BY-NC-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 = { b949f70278 8bf0 e8???????? 68???????? 56 ffd0 57 }
            // n = 7, score = 200
            //   b949f70278           | mov                 ecx, 0x7802f749
            //   8bf0                 | mov                 esi, eax
            //   e8????????           |                     
            //   68????????           |                     
            //   56                   | push                esi
            //   ffd0                 | call                eax
            //   57                   | push                edi

        $sequence_1 = { e8???????? 8d850cffffff 50 8d8574ffffff 50 8d95fcfcffff 8d8d74fcffff }
            // n = 7, score = 200
            //   e8????????           |                     
            //   8d850cffffff         | lea                 eax, [ebp - 0xf4]
            //   50                   | push                eax
            //   8d8574ffffff         | lea                 eax, [ebp - 0x8c]
            //   50                   | push                eax
            //   8d95fcfcffff         | lea                 edx, [ebp - 0x304]
            //   8d8d74fcffff         | lea                 ecx, [ebp - 0x38c]

        $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 = { 48 7416 48 48 7412 83e806 7410 }
            // n = 7, score = 200
            //   48                   | dec                 eax
            //   7416                 | je                  0x18
            //   48                   | dec                 eax
            //   48                   | dec                 eax
            //   7412                 | je                  0x14
            //   83e806               | sub                 eax, 6
            //   7410                 | je                  0x12

        $sequence_4 = { ffd0 33c0 8d7de0 ab b9daf68a50 ab 66ab }
            // n = 7, score = 200
            //   ffd0                 | call                eax
            //   33c0                 | xor                 eax, eax
            //   8d7de0               | lea                 edi, [ebp - 0x20]
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   b9daf68a50           | mov                 ecx, 0x508af6da
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   66ab                 | stosw               word ptr es:[edi], ax

        $sequence_5 = { 56 ffd0 5e c3 56 8bf1 }
            // n = 6, score = 200
            //   56                   | push                esi
            //   ffd0                 | call                eax
            //   5e                   | pop                 esi
            //   c3                   | ret                 
            //   56                   | push                esi
            //   8bf1                 | mov                 esi, ecx

        $sequence_6 = { 7e20 ff349f 8b8d70ffffff 8bc3 c1e004 50 6a10 }
            // n = 7, score = 200
            //   7e20                 | jle                 0x22
            //   ff349f               | push                dword ptr [edi + ebx*4]
            //   8b8d70ffffff         | mov                 ecx, dword ptr [ebp - 0x90]
            //   8bc3                 | mov                 eax, ebx
            //   c1e004               | shl                 eax, 4
            //   50                   | push                eax
            //   6a10                 | push                0x10

        $sequence_7 = { 8d85f8feffff b9ec3daf46 6a00 50 }
            // n = 4, score = 200
            //   8d85f8feffff         | lea                 eax, [ebp - 0x108]
            //   b9ec3daf46           | mov                 ecx, 0x46af3dec
            //   6a00                 | push                0
            //   50                   | push                eax

        $sequence_8 = { e8???????? 6805010000 8d85d8fbffff b95d4411ff 50 57 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   6805010000           | push                0x105
            //   8d85d8fbffff         | lea                 eax, [ebp - 0x428]
            //   b95d4411ff           | mov                 ecx, 0xff11445d
            //   50                   | push                eax
            //   57                   | push                edi

        $sequence_9 = { 53 50 e8???????? ffd0 }
            // n = 4, score = 200
            //   53                   | push                ebx
            //   50                   | push                eax
            //   e8????????           |                     
            //   ffd0                 | call                eax

    condition:
        7 of them and filesize < 368640
}