rule win_auriga_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.auriga."
        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.auriga"
        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 = { 53 8b5d0c 56 8b7360 803e0e 7561 807e0100 }
            // n = 7, score = 100
            //   53                   | push                ebx
            //   8b5d0c               | mov                 ebx, dword ptr [ebp + 0xc]
            //   56                   | push                esi
            //   8b7360               | mov                 esi, dword ptr [ebx + 0x60]
            //   803e0e               | cmp                 byte ptr [esi], 0xe
            //   7561                 | jne                 0x63
            //   807e0100             | cmp                 byte ptr [esi + 1], 0

        $sequence_1 = { ff15???????? 3bc6 5e 750b ff7508 }
            // n = 5, score = 100
            //   ff15????????         |                     
            //   3bc6                 | cmp                 eax, esi
            //   5e                   | pop                 esi
            //   750b                 | jne                 0xd
            //   ff7508               | push                dword ptr [ebp + 8]

        $sequence_2 = { c20800 90 5f bb???????? 81eb???????? 2bfb 8bf7 }
            // n = 7, score = 100
            //   c20800               | ret                 8
            //   90                   | nop                 
            //   5f                   | pop                 edi
            //   bb????????           |                     
            //   81eb????????         |                     
            //   2bfb                 | sub                 edi, ebx
            //   8bf7                 | mov                 esi, edi

        $sequence_3 = { 83c114 3bfa 894df4 7291 }
            // n = 4, score = 100
            //   83c114               | add                 ecx, 0x14
            //   3bfa                 | cmp                 edi, edx
            //   894df4               | mov                 dword ptr [ebp - 0xc], ecx
            //   7291                 | jb                  0xffffff93

        $sequence_4 = { ffd6 8bc7 e9???????? 895dfc 6a01 53 56 }
            // n = 7, score = 100
            //   ffd6                 | call                esi
            //   8bc7                 | mov                 eax, edi
            //   e9????????           |                     
            //   895dfc               | mov                 dword ptr [ebp - 4], ebx
            //   6a01                 | push                1
            //   53                   | push                ebx
            //   56                   | push                esi

        $sequence_5 = { 56 8d85d4fbffff 50 8d85dcfbffff 50 6800000040 }
            // n = 6, score = 100
            //   56                   | push                esi
            //   8d85d4fbffff         | lea                 eax, [ebp - 0x42c]
            //   50                   | push                eax
            //   8d85dcfbffff         | lea                 eax, [ebp - 0x424]
            //   50                   | push                eax
            //   6800000040           | push                0x40000000

        $sequence_6 = { 7407 b8010000c0 eb51 833d????????00 74f0 56 }
            // n = 6, score = 100
            //   7407                 | je                  9
            //   b8010000c0           | mov                 eax, 0xc0000001
            //   eb51                 | jmp                 0x53
            //   833d????????00       |                     
            //   74f0                 | je                  0xfffffff2
            //   56                   | push                esi

        $sequence_7 = { 8975d8 c605????????00 e8???????? 33c0 }
            // n = 4, score = 100
            //   8975d8               | mov                 dword ptr [ebp - 0x28], esi
            //   c605????????00       |                     
            //   e8????????           |                     
            //   33c0                 | xor                 eax, eax

        $sequence_8 = { 53 56 8b750c 8b4660 33db }
            // n = 5, score = 100
            //   53                   | push                ebx
            //   56                   | push                esi
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   8b4660               | mov                 eax, dword ptr [esi + 0x60]
            //   33db                 | xor                 ebx, ebx

        $sequence_9 = { 8b3c30 ff45ec eba1 8bc6 eb02 }
            // n = 5, score = 100
            //   8b3c30               | mov                 edi, dword ptr [eax + esi]
            //   ff45ec               | inc                 dword ptr [ebp - 0x14]
            //   eba1                 | jmp                 0xffffffa3
            //   8bc6                 | mov                 eax, esi
            //   eb02                 | jmp                 4

    condition:
        7 of them and filesize < 75776
}