rule win_dharma_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.dharma."
        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.dharma"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 55 8bec 83ec64 c7459c00000000 c7459c1f000000 eb09 8b459c }
            // n = 7, score = 100
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83ec64               | sub                 esp, 0x64
            //   c7459c00000000       | mov                 dword ptr [ebp - 0x64], 0
            //   c7459c1f000000       | mov                 dword ptr [ebp - 0x64], 0x1f
            //   eb09                 | jmp                 0xb
            //   8b459c               | mov                 eax, dword ptr [ebp - 0x64]

        $sequence_1 = { 83c408 8945f8 837df800 745a 6a2c }
            // n = 5, score = 100
            //   83c408               | add                 esp, 8
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   837df800             | cmp                 dword ptr [ebp - 8], 0
            //   745a                 | je                  0x5c
            //   6a2c                 | push                0x2c

        $sequence_2 = { 2b45ec d1f8 50 8b4de0 2b4d0c d1f9 8b5510 }
            // n = 7, score = 100
            //   2b45ec               | sub                 eax, dword ptr [ebp - 0x14]
            //   d1f8                 | sar                 eax, 1
            //   50                   | push                eax
            //   8b4de0               | mov                 ecx, dword ptr [ebp - 0x20]
            //   2b4d0c               | sub                 ecx, dword ptr [ebp + 0xc]
            //   d1f9                 | sar                 ecx, 1
            //   8b5510               | mov                 edx, dword ptr [ebp + 0x10]

        $sequence_3 = { 7905 48 83c8f0 40 8b4df8 8b15???????? 668b0442 }
            // n = 7, score = 100
            //   7905                 | jns                 7
            //   48                   | dec                 eax
            //   83c8f0               | or                  eax, 0xfffffff0
            //   40                   | inc                 eax
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   8b15????????         |                     
            //   668b0442             | mov                 ax, word ptr [edx + eax*2]

        $sequence_4 = { 50 e8???????? 50 6a00 8b4df4 51 e8???????? }
            // n = 7, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   50                   | push                eax
            //   6a00                 | push                0
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   51                   | push                ecx
            //   e8????????           |                     

        $sequence_5 = { e8???????? 83c404 8b5508 8b4a04 8b5508 8b12 89048a }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   8b4a04               | mov                 ecx, dword ptr [edx + 4]
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   8b12                 | mov                 edx, dword ptr [edx]
            //   89048a               | mov                 dword ptr [edx + ecx*4], eax

        $sequence_6 = { 8955f4 8b45f8 83c002 8945f8 eb02 eb02 }
            // n = 6, score = 100
            //   8955f4               | mov                 dword ptr [ebp - 0xc], edx
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   83c002               | add                 eax, 2
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   eb02                 | jmp                 4
            //   eb02                 | jmp                 4

        $sequence_7 = { 8b08 8b550c 8b4204 8901 8b4d14 8b11 83c204 }
            // n = 7, score = 100
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   8b4204               | mov                 eax, dword ptr [edx + 4]
            //   8901                 | mov                 dword ptr [ecx], eax
            //   8b4d14               | mov                 ecx, dword ptr [ebp + 0x14]
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   83c204               | add                 edx, 4

        $sequence_8 = { 894dfc 837d1000 7515 8b55f4 a1???????? 8a08 880a }
            // n = 7, score = 100
            //   894dfc               | mov                 dword ptr [ebp - 4], ecx
            //   837d1000             | cmp                 dword ptr [ebp + 0x10], 0
            //   7515                 | jne                 0x17
            //   8b55f4               | mov                 edx, dword ptr [ebp - 0xc]
            //   a1????????           |                     
            //   8a08                 | mov                 cl, byte ptr [eax]
            //   880a                 | mov                 byte ptr [edx], cl

        $sequence_9 = { 8b4d84 51 e8???????? 83c40c 8b5584 52 }
            // n = 6, score = 100
            //   8b4d84               | mov                 ecx, dword ptr [ebp - 0x7c]
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8b5584               | mov                 edx, dword ptr [ebp - 0x7c]
            //   52                   | push                edx

    condition:
        7 of them and filesize < 204800
}