rule win_phobos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.phobos"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 8b4510 8b00 a810 7423 a900040000 7518 8b06 }
            // n = 7, score = 100
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   a810                 | test                al, 0x10
            //   7423                 | je                  0x25
            //   a900040000           | test                eax, 0x400
            //   7518                 | jne                 0x1a
            //   8b06                 | mov                 eax, dword ptr [esi]

        $sequence_1 = { 85c0 0f8460ffffff 8b7df4 8bf3 e8???????? 837dfc00 7409 }
            // n = 7, score = 100
            //   85c0                 | test                eax, eax
            //   0f8460ffffff         | je                  0xffffff66
            //   8b7df4               | mov                 edi, dword ptr [ebp - 0xc]
            //   8bf3                 | mov                 esi, ebx
            //   e8????????           |                     
            //   837dfc00             | cmp                 dword ptr [ebp - 4], 0
            //   7409                 | je                  0xb

        $sequence_2 = { 0fb69ba8a44000 c1e108 33cb 23d6 0fb692a8a44000 c1e108 33ca }
            // n = 7, score = 100
            //   0fb69ba8a44000       | movzx               ebx, byte ptr [ebx + 0x40a4a8]
            //   c1e108               | shl                 ecx, 8
            //   33cb                 | xor                 ecx, ebx
            //   23d6                 | and                 edx, esi
            //   0fb692a8a44000       | movzx               edx, byte ptr [edx + 0x40a4a8]
            //   c1e108               | shl                 ecx, 8
            //   33ca                 | xor                 ecx, edx

        $sequence_3 = { 85c0 0f845c010000 395df8 0f8453010000 53 ff75f8 e8???????? }
            // n = 7, score = 100
            //   85c0                 | test                eax, eax
            //   0f845c010000         | je                  0x162
            //   395df8               | cmp                 dword ptr [ebp - 8], ebx
            //   0f8453010000         | je                  0x159
            //   53                   | push                ebx
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     

        $sequence_4 = { 83c414 8b4508 8b4008 e8???????? 85c0 7405 e8???????? }
            // n = 7, score = 100
            //   83c414               | add                 esp, 0x14
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b4008               | mov                 eax, dword ptr [eax + 8]
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7405                 | je                  7
            //   e8????????           |                     

        $sequence_5 = { 5b 3bfb 7f02 8bdf 53 68???????? ff7508 }
            // n = 7, score = 100
            //   5b                   | pop                 ebx
            //   3bfb                 | cmp                 edi, ebx
            //   7f02                 | jg                  4
            //   8bdf                 | mov                 ebx, edi
            //   53                   | push                ebx
            //   68????????           |                     
            //   ff7508               | push                dword ptr [ebp + 8]

        $sequence_6 = { 8b750c 57 8d4601 6a02 50 e8???????? }
            // n = 6, score = 100
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   57                   | push                edi
            //   8d4601               | lea                 eax, [esi + 1]
            //   6a02                 | push                2
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_7 = { 83c40c 8d441801 50 53 ff15???????? 50 }
            // n = 6, score = 100
            //   83c40c               | add                 esp, 0xc
            //   8d441801             | lea                 eax, [eax + ebx + 1]
            //   50                   | push                eax
            //   53                   | push                ebx
            //   ff15????????         |                     
            //   50                   | push                eax

        $sequence_8 = { 8d45f0 a5 50 ff7508 66a5 e8???????? }
            // n = 6, score = 100
            //   8d45f0               | lea                 eax, [ebp - 0x10]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   50                   | push                eax
            //   ff7508               | push                dword ptr [ebp + 8]
            //   66a5                 | movsw               word ptr es:[edi], word ptr [esi]
            //   e8????????           |                     

        $sequence_9 = { 0f8478010000 8bc3 50 ff742438 8d842490000000 6a02 6804010000 }
            // n = 7, score = 100
            //   0f8478010000         | je                  0x17e
            //   8bc3                 | mov                 eax, ebx
            //   50                   | push                eax
            //   ff742438             | push                dword ptr [esp + 0x38]
            //   8d842490000000       | lea                 eax, [esp + 0x90]
            //   6a02                 | push                2
            //   6804010000           | push                0x104

    condition:
        7 of them and filesize < 139264
}