rule win_longwatch_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.longwatch."
        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.longwatch"
        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 = { 6bc830 8b0495a00b4300 f644082801 7414 }
            // n = 4, score = 200
            //   6bc830               | imul                ecx, eax, 0x30
            //   8b0495a00b4300       | mov                 eax, dword ptr [edx*4 + 0x430ba0]
            //   f644082801           | test                byte ptr [eax + ecx + 0x28], 1
            //   7414                 | je                  0x16

        $sequence_1 = { 3934bda00b4300 7531 e8???????? 8904bda00b4300 85c0 7514 }
            // n = 6, score = 200
            //   3934bda00b4300       | cmp                 dword ptr [edi*4 + 0x430ba0], esi
            //   7531                 | jne                 0x33
            //   e8????????           |                     
            //   8904bda00b4300       | mov                 dword ptr [edi*4 + 0x430ba0], eax
            //   85c0                 | test                eax, eax
            //   7514                 | jne                 0x16

        $sequence_2 = { 750b 8b0d???????? e8???????? e8???????? 83ec18 }
            // n = 5, score = 200
            //   750b                 | jne                 0xd
            //   8b0d????????         |                     
            //   e8????????           |                     
            //   e8????????           |                     
            //   83ec18               | sub                 esp, 0x18

        $sequence_3 = { c745e088934200 e9???????? c745e090934200 e9???????? c745e0a8934200 }
            // n = 5, score = 200
            //   c745e088934200       | mov                 dword ptr [ebp - 0x20], 0x429388
            //   e9????????           |                     
            //   c745e090934200       | mov                 dword ptr [ebp - 0x20], 0x429390
            //   e9????????           |                     
            //   c745e0a8934200       | mov                 dword ptr [ebp - 0x20], 0x4293a8

        $sequence_4 = { 83c804 6a00 50 e8???????? 8d4da8 c745fc03000000 }
            // n = 6, score = 200
            //   83c804               | or                  eax, 4
            //   6a00                 | push                0
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d4da8               | lea                 ecx, [ebp - 0x58]
            //   c745fc03000000       | mov                 dword ptr [ebp - 4], 3

        $sequence_5 = { c1f806 83e13f 6bc930 8b0485a00b4300 }
            // n = 4, score = 200
            //   c1f806               | sar                 eax, 6
            //   83e13f               | and                 ecx, 0x3f
            //   6bc930               | imul                ecx, ecx, 0x30
            //   8b0485a00b4300       | mov                 eax, dword ptr [eax*4 + 0x430ba0]

        $sequence_6 = { 83e03f 6bc030 03048da00b4300 b9???????? eb07 b9???????? 8bc1 }
            // n = 7, score = 200
            //   83e03f               | and                 eax, 0x3f
            //   6bc030               | imul                eax, eax, 0x30
            //   03048da00b4300       | add                 eax, dword ptr [ecx*4 + 0x430ba0]
            //   b9????????           |                     
            //   eb07                 | jmp                 9
            //   b9????????           |                     
            //   8bc1                 | mov                 eax, ecx

        $sequence_7 = { 68???????? e8???????? eb52 68???????? e8???????? }
            // n = 5, score = 200
            //   68????????           |                     
            //   e8????????           |                     
            //   eb52                 | jmp                 0x54
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_8 = { 56 68a0000000 8bf1 ff15???????? }
            // n = 4, score = 200
            //   56                   | push                esi
            //   68a0000000           | push                0xa0
            //   8bf1                 | mov                 esi, ecx
            //   ff15????????         |                     

        $sequence_9 = { 8d8d48ffffff c78548ffffffdc334200 e8???????? 83ec08 c745fc02000000 }
            // n = 5, score = 200
            //   8d8d48ffffff         | lea                 ecx, [ebp - 0xb8]
            //   c78548ffffffdc334200     | mov    dword ptr [ebp - 0xb8], 0x4233dc
            //   e8????????           |                     
            //   83ec08               | sub                 esp, 8
            //   c745fc02000000       | mov                 dword ptr [ebp - 4], 2

    condition:
        7 of them and filesize < 647168
}