rule win_tarsip_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.tarsip."
        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.tarsip"
        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 51 c744245444000000 895c2458 895c2460 895c245c }
            // n = 6, score = 100
            //   53                   | push                ebx
            //   51                   | push                ecx
            //   c744245444000000     | mov                 dword ptr [esp + 0x54], 0x44
            //   895c2458             | mov                 dword ptr [esp + 0x58], ebx
            //   895c2460             | mov                 dword ptr [esp + 0x60], ebx
            //   895c245c             | mov                 dword ptr [esp + 0x5c], ebx

        $sequence_1 = { 7300 8bf5 3be8 7202 8bf0 397b24 }
            // n = 6, score = 100
            //   7300                 | jae                 2
            //   8bf5                 | mov                 esi, ebp
            //   3be8                 | cmp                 ebp, eax
            //   7202                 | jb                  4
            //   8bf0                 | mov                 esi, eax
            //   397b24               | cmp                 dword ptr [ebx + 0x24], edi

        $sequence_2 = { 8d742428 c68424481200000d e8???????? 8b08 8b7004 8b7c2438 }
            // n = 6, score = 100
            //   8d742428             | lea                 esi, [esp + 0x28]
            //   c68424481200000d     | mov                 byte ptr [esp + 0x1248], 0xd
            //   e8????????           |                     
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8b7004               | mov                 esi, dword ptr [eax + 4]
            //   8b7c2438             | mov                 edi, dword ptr [esp + 0x38]

        $sequence_3 = { 50 c6414400 e8???????? 8b4e08 8a5644 885144 885e44 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   c6414400             | mov                 byte ptr [ecx + 0x44], 0
            //   e8????????           |                     
            //   8b4e08               | mov                 ecx, dword ptr [esi + 8]
            //   8a5644               | mov                 dl, byte ptr [esi + 0x44]
            //   885144               | mov                 byte ptr [ecx + 0x44], dl
            //   885e44               | mov                 byte ptr [esi + 0x44], bl

        $sequence_4 = { 68???????? 8d4c2444 c744245c0f000000 89442458 88442448 e8???????? bb???????? }
            // n = 7, score = 100
            //   68????????           |                     
            //   8d4c2444             | lea                 ecx, [esp + 0x44]
            //   c744245c0f000000     | mov                 dword ptr [esp + 0x5c], 0xf
            //   89442458             | mov                 dword ptr [esp + 0x58], eax
            //   88442448             | mov                 byte ptr [esp + 0x48], al
            //   e8????????           |                     
            //   bb????????           |                     

        $sequence_5 = { 6a3f 8d842431010000 53 50 889c2438010000 e8???????? 33c0 }
            // n = 7, score = 100
            //   6a3f                 | push                0x3f
            //   8d842431010000       | lea                 eax, [esp + 0x131]
            //   53                   | push                ebx
            //   50                   | push                eax
            //   889c2438010000       | mov                 byte ptr [esp + 0x138], bl
            //   e8????????           |                     
            //   33c0                 | xor                 eax, eax

        $sequence_6 = { 51 c68424c801000000 e8???????? 8bbc248c000000 be10000000 83c40c 39b42494000000 }
            // n = 7, score = 100
            //   51                   | push                ecx
            //   c68424c801000000     | mov                 byte ptr [esp + 0x1c8], 0
            //   e8????????           |                     
            //   8bbc248c000000       | mov                 edi, dword ptr [esp + 0x8c]
            //   be10000000           | mov                 esi, 0x10
            //   83c40c               | add                 esp, 0xc
            //   39b42494000000       | cmp                 dword ptr [esp + 0x94], esi

        $sequence_7 = { 8b4c2424 83c414 83f940 73ba 03c1 }
            // n = 5, score = 100
            //   8b4c2424             | mov                 ecx, dword ptr [esp + 0x24]
            //   83c414               | add                 esp, 0x14
            //   83f940               | cmp                 ecx, 0x40
            //   73ba                 | jae                 0xffffffbc
            //   03c1                 | add                 eax, ecx

        $sequence_8 = { 888424c7000000 83c40c 8d8424cc020000 50 ba???????? 8bcf 889c24b0000000 }
            // n = 7, score = 100
            //   888424c7000000       | mov                 byte ptr [esp + 0xc7], al
            //   83c40c               | add                 esp, 0xc
            //   8d8424cc020000       | lea                 eax, [esp + 0x2cc]
            //   50                   | push                eax
            //   ba????????           |                     
            //   8bcf                 | mov                 ecx, edi
            //   889c24b0000000       | mov                 byte ptr [esp + 0xb0], bl

        $sequence_9 = { b910000000 be???????? 8d7c2470 f3a5 a4 83fa3f }
            // n = 6, score = 100
            //   b910000000           | mov                 ecx, 0x10
            //   be????????           |                     
            //   8d7c2470             | lea                 edi, [esp + 0x70]
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   a4                   | movsb               byte ptr es:[edi], byte ptr [esi]
            //   83fa3f               | cmp                 edx, 0x3f

    condition:
        7 of them and filesize < 360448
}