rule win_wmighost_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.wmighost."
        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.wmighost"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { 6a00 8b95f8feffff 52 e8???????? 83c40c 8b4510 50 }
            // n = 7, score = 100
            //   6a00                 | push                0
            //   8b95f8feffff         | mov                 edx, dword ptr [ebp - 0x108]
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   50                   | push                eax

        $sequence_1 = { 83c40c 8b4510 50 8d8df0fcffff }
            // n = 4, score = 100
            //   83c40c               | add                 esp, 0xc
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   50                   | push                eax
            //   8d8df0fcffff         | lea                 ecx, [ebp - 0x310]

        $sequence_2 = { 52 e8???????? 8945b4 8b45b4 }
            // n = 4, score = 100
            //   52                   | push                edx
            //   e8????????           |                     
            //   8945b4               | mov                 dword ptr [ebp - 0x4c], eax
            //   8b45b4               | mov                 eax, dword ptr [ebp - 0x4c]

        $sequence_3 = { c745fcffffffff 8d4d84 e8???????? 8b4df4 64890d00000000 8be5 5d }
            // n = 7, score = 100
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   8d4d84               | lea                 ecx, [ebp - 0x7c]
            //   e8????????           |                     
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   64890d00000000       | mov                 dword ptr fs:[0], ecx
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp

        $sequence_4 = { 8d55cc 52 e8???????? 83c408 c645fc00 8d4dcc e8???????? }
            // n = 7, score = 100
            //   8d55cc               | lea                 edx, [ebp - 0x34]
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   c645fc00             | mov                 byte ptr [ebp - 4], 0
            //   8d4dcc               | lea                 ecx, [ebp - 0x34]
            //   e8????????           |                     

        $sequence_5 = { 8d8decfeffff 51 8d958caeffff 52 e8???????? 83c404 }
            // n = 6, score = 100
            //   8d8decfeffff         | lea                 ecx, [ebp - 0x114]
            //   51                   | push                ecx
            //   8d958caeffff         | lea                 edx, [ebp - 0x5174]
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

        $sequence_6 = { ff15???????? e9???????? c745fcffffffff 8d4d84 e8???????? 8b4df4 }
            // n = 6, score = 100
            //   ff15????????         |                     
            //   e9????????           |                     
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   8d4d84               | lea                 ecx, [ebp - 0x7c]
            //   e8????????           |                     
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]

        $sequence_7 = { ff15???????? e9???????? c745fcffffffff 8d4d84 e8???????? }
            // n = 5, score = 100
            //   ff15????????         |                     
            //   e9????????           |                     
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   8d4d84               | lea                 ecx, [ebp - 0x7c]
            //   e8????????           |                     

        $sequence_8 = { 50 8d8df0fcffff 51 68???????? 8b95f8feffff 52 ff15???????? }
            // n = 7, score = 100
            //   50                   | push                eax
            //   8d8df0fcffff         | lea                 ecx, [ebp - 0x310]
            //   51                   | push                ecx
            //   68????????           |                     
            //   8b95f8feffff         | mov                 edx, dword ptr [ebp - 0x108]
            //   52                   | push                edx
            //   ff15????????         |                     

        $sequence_9 = { 8b55f8 8882c8304000 8b45f8 0fbe88c8304000 33d2 }
            // n = 5, score = 100
            //   8b55f8               | mov                 edx, dword ptr [ebp - 8]
            //   8882c8304000         | mov                 byte ptr [edx + 0x4030c8], al
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   0fbe88c8304000       | movsx               ecx, byte ptr [eax + 0x4030c8]
            //   33d2                 | xor                 edx, edx

    condition:
        7 of them and filesize < 49152
}