rule win_nemty_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.nemty."
        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.nemty"
        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 = { 53 8db5ecfcffff e8???????? 53 8db5b4fcffff }
            // n = 5, score = 300
            //   53                   | push                ebx
            //   8db5ecfcffff         | lea                 esi, [ebp - 0x314]
            //   e8????????           |                     
            //   53                   | push                ebx
            //   8db5b4fcffff         | lea                 esi, [ebp - 0x34c]

        $sequence_1 = { 8db544fcffff e8???????? 53 8db50cfcffff }
            // n = 4, score = 300
            //   8db544fcffff         | lea                 esi, [ebp - 0x3bc]
            //   e8????????           |                     
            //   53                   | push                ebx
            //   8db50cfcffff         | lea                 esi, [ebp - 0x3f4]

        $sequence_2 = { 83ec1c 03cb 8bf4 51 e8???????? 8d45e0 }
            // n = 6, score = 300
            //   83ec1c               | sub                 esp, 0x1c
            //   03cb                 | add                 ecx, ebx
            //   8bf4                 | mov                 esi, esp
            //   51                   | push                ecx
            //   e8????????           |                     
            //   8d45e0               | lea                 eax, [ebp - 0x20]

        $sequence_3 = { 50 8d45df e8???????? a1???????? }
            // n = 4, score = 300
            //   50                   | push                eax
            //   8d45df               | lea                 eax, [ebp - 0x21]
            //   e8????????           |                     
            //   a1????????           |                     

        $sequence_4 = { 83c61c 3bd8 72c0 68???????? }
            // n = 4, score = 300
            //   83c61c               | add                 esi, 0x1c
            //   3bd8                 | cmp                 ebx, eax
            //   72c0                 | jb                  0xffffffc2
            //   68????????           |                     

        $sequence_5 = { 7410 6a01 33ff 8db4248c000000 }
            // n = 4, score = 300
            //   7410                 | je                  0x12
            //   6a01                 | push                1
            //   33ff                 | xor                 edi, edi
            //   8db4248c000000       | lea                 esi, [esp + 0x8c]

        $sequence_6 = { 8bc3 e8???????? eb23 ff759c }
            // n = 4, score = 300
            //   8bc3                 | mov                 eax, ebx
            //   e8????????           |                     
            //   eb23                 | jmp                 0x25
            //   ff759c               | push                dword ptr [ebp - 0x64]

        $sequence_7 = { 53 8db424c4000000 e8???????? 53 }
            // n = 4, score = 300
            //   53                   | push                ebx
            //   8db424c4000000       | lea                 esi, [esp + 0xc4]
            //   e8????????           |                     
            //   53                   | push                ebx

        $sequence_8 = { ff35???????? ff15???????? 85c0 74dd 8b1d???????? }
            // n = 5, score = 300
            //   ff35????????         |                     
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   74dd                 | je                  0xffffffdf
            //   8b1d????????         |                     

        $sequence_9 = { 837d3810 8bf8 8b4524 59 7303 8d4524 837d3810 }
            // n = 7, score = 300
            //   837d3810             | cmp                 dword ptr [ebp + 0x38], 0x10
            //   8bf8                 | mov                 edi, eax
            //   8b4524               | mov                 eax, dword ptr [ebp + 0x24]
            //   59                   | pop                 ecx
            //   7303                 | jae                 5
            //   8d4524               | lea                 eax, [ebp + 0x24]
            //   837d3810             | cmp                 dword ptr [ebp + 0x38], 0x10

    condition:
        7 of them and filesize < 204800
}