rule win_cloudwizard_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.cloudwizard."
        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.cloudwizard"
        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 = { 40 6685d2 75f6 2bc1 8bce d1f8 }
            // n = 6, score = 100
            //   40                   | inc                 eax
            //   6685d2               | test                dx, dx
            //   75f6                 | jne                 0xfffffff8
            //   2bc1                 | sub                 eax, ecx
            //   8bce                 | mov                 ecx, esi
            //   d1f8                 | sar                 eax, 1

        $sequence_1 = { d1f8 51 8d844618060000 50 e8???????? bf???????? 8bc7 }
            // n = 7, score = 100
            //   d1f8                 | sar                 eax, 1
            //   51                   | push                ecx
            //   8d844618060000       | lea                 eax, [esi + eax*2 + 0x618]
            //   50                   | push                eax
            //   e8????????           |                     
            //   bf????????           |                     
            //   8bc7                 | mov                 eax, edi

        $sequence_2 = { c645c74d c645c846 c645c95c c645ca7e c645cb49 c645cc5a }
            // n = 6, score = 100
            //   c645c74d             | mov                 byte ptr [ebp - 0x39], 0x4d
            //   c645c846             | mov                 byte ptr [ebp - 0x38], 0x46
            //   c645c95c             | mov                 byte ptr [ebp - 0x37], 0x5c
            //   c645ca7e             | mov                 byte ptr [ebp - 0x36], 0x7e
            //   c645cb49             | mov                 byte ptr [ebp - 0x35], 0x49
            //   c645cc5a             | mov                 byte ptr [ebp - 0x34], 0x5a

        $sequence_3 = { 33c0 8945ec 8365fc00 6a10 50 }
            // n = 5, score = 100
            //   33c0                 | xor                 eax, eax
            //   8945ec               | mov                 dword ptr [ebp - 0x14], eax
            //   8365fc00             | and                 dword ptr [ebp - 4], 0
            //   6a10                 | push                0x10
            //   50                   | push                eax

        $sequence_4 = { 8b35???????? 8365fc00 57 8965f0 6a05 }
            // n = 5, score = 100
            //   8b35????????         |                     
            //   8365fc00             | and                 dword ptr [ebp - 4], 0
            //   57                   | push                edi
            //   8965f0               | mov                 dword ptr [ebp - 0x10], esp
            //   6a05                 | push                5

        $sequence_5 = { 663930 75f5 8d45e8 50 }
            // n = 4, score = 100
            //   663930               | cmp                 word ptr [eax], si
            //   75f5                 | jne                 0xfffffff7
            //   8d45e8               | lea                 eax, [ebp - 0x18]
            //   50                   | push                eax

        $sequence_6 = { 668945f0 58 668945f2 6a47 58 668945f4 6a46 }
            // n = 7, score = 100
            //   668945f0             | mov                 word ptr [ebp - 0x10], ax
            //   58                   | pop                 eax
            //   668945f2             | mov                 word ptr [ebp - 0xe], ax
            //   6a47                 | push                0x47
            //   58                   | pop                 eax
            //   668945f4             | mov                 word ptr [ebp - 0xc], ax
            //   6a46                 | push                0x46

        $sequence_7 = { ff7508 8bce ff5004 6a04 33d2 59 8bc6 }
            // n = 7, score = 100
            //   ff7508               | push                dword ptr [ebp + 8]
            //   8bce                 | mov                 ecx, esi
            //   ff5004               | call                dword ptr [eax + 4]
            //   6a04                 | push                4
            //   33d2                 | xor                 edx, edx
            //   59                   | pop                 ecx
            //   8bc6                 | mov                 eax, esi

        $sequence_8 = { 7506 56 e8???????? 6860ea0000 ff15???????? 837e3000 }
            // n = 6, score = 100
            //   7506                 | jne                 8
            //   56                   | push                esi
            //   e8????????           |                     
            //   6860ea0000           | push                0xea60
            //   ff15????????         |                     
            //   837e3000             | cmp                 dword ptr [esi + 0x30], 0

        $sequence_9 = { c9 c3 55 8d6c2488 81ec9c040000 }
            // n = 5, score = 100
            //   c9                   | leave               
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8d6c2488             | lea                 ebp, [esp - 0x78]
            //   81ec9c040000         | sub                 esp, 0x49c

    condition:
        7 of them and filesize < 134144
}