rule win_rover_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.rover."
        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.rover"
        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 = { 897e1c 897e18 897e10 897e08 897e04 897e0c 897e14 }
            // n = 7, score = 100
            //   897e1c               | mov                 dword ptr [esi + 0x1c], edi
            //   897e18               | mov                 dword ptr [esi + 0x18], edi
            //   897e10               | mov                 dword ptr [esi + 0x10], edi
            //   897e08               | mov                 dword ptr [esi + 8], edi
            //   897e04               | mov                 dword ptr [esi + 4], edi
            //   897e0c               | mov                 dword ptr [esi + 0xc], edi
            //   897e14               | mov                 dword ptr [esi + 0x14], edi

        $sequence_1 = { 8b542414 56 68???????? 52 e8???????? 53 ff15???????? }
            // n = 7, score = 100
            //   8b542414             | mov                 edx, dword ptr [esp + 0x14]
            //   56                   | push                esi
            //   68????????           |                     
            //   52                   | push                edx
            //   e8????????           |                     
            //   53                   | push                ebx
            //   ff15????????         |                     

        $sequence_2 = { 8bf0 a1???????? 8b4810 8d542438 52 ffd1 }
            // n = 6, score = 100
            //   8bf0                 | mov                 esi, eax
            //   a1????????           |                     
            //   8b4810               | mov                 ecx, dword ptr [eax + 0x10]
            //   8d542438             | lea                 edx, [esp + 0x38]
            //   52                   | push                edx
            //   ffd1                 | call                ecx

        $sequence_3 = { 8d54247c 52 50 e8???????? 83c408 85c0 0f85bc010000 }
            // n = 7, score = 100
            //   8d54247c             | lea                 edx, [esp + 0x7c]
            //   52                   | push                edx
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax
            //   0f85bc010000         | jne                 0x1c2

        $sequence_4 = { eba5 6800010000 8d8c24b4000000 51 55 e8???????? 83c40c }
            // n = 7, score = 100
            //   eba5                 | jmp                 0xffffffa7
            //   6800010000           | push                0x100
            //   8d8c24b4000000       | lea                 ecx, [esp + 0xb4]
            //   51                   | push                ecx
            //   55                   | push                ebp
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_5 = { 83c40c 8d4d88 885dfc ff15???????? 8b0d???????? 68???????? 51 }
            // n = 7, score = 100
            //   83c40c               | add                 esp, 0xc
            //   8d4d88               | lea                 ecx, [ebp - 0x78]
            //   885dfc               | mov                 byte ptr [ebp - 4], bl
            //   ff15????????         |                     
            //   8b0d????????         |                     
            //   68????????           |                     
            //   51                   | push                ecx

        $sequence_6 = { 8d7c2440 e8???????? 8bf0 8d8c24cc000000 51 8d542460 68???????? }
            // n = 7, score = 100
            //   8d7c2440             | lea                 edi, [esp + 0x40]
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   8d8c24cc000000       | lea                 ecx, [esp + 0xcc]
            //   51                   | push                ecx
            //   8d542460             | lea                 edx, [esp + 0x60]
            //   68????????           |                     

        $sequence_7 = { 0fb7442418 e9???????? 8bf3 eb49 0fb7442430 6801040000 }
            // n = 6, score = 100
            //   0fb7442418           | movzx               eax, word ptr [esp + 0x18]
            //   e9????????           |                     
            //   8bf3                 | mov                 esi, ebx
            //   eb49                 | jmp                 0x4b
            //   0fb7442430           | movzx               eax, word ptr [esp + 0x30]
            //   6801040000           | push                0x401

        $sequence_8 = { 3bf0 7629 8b442428 5f 5e 5d c700ffffff7f }
            // n = 7, score = 100
            //   3bf0                 | cmp                 esi, eax
            //   7629                 | jbe                 0x2b
            //   8b442428             | mov                 eax, dword ptr [esp + 0x28]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp
            //   c700ffffff7f         | mov                 dword ptr [eax], 0x7fffffff

        $sequence_9 = { b855000000 5b 83c438 c3 68???????? 57 e8???????? }
            // n = 7, score = 100
            //   b855000000           | mov                 eax, 0x55
            //   5b                   | pop                 ebx
            //   83c438               | add                 esp, 0x38
            //   c3                   | ret                 
            //   68????????           |                     
            //   57                   | push                edi
            //   e8????????           |                     

    condition:
        7 of them and filesize < 704512
}