rule win_applejeus_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.applejeus."
        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.applejeus"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 83f065 888520f6ffff 8b8518f6ffff 0405 83f06e 888521f6ffff 8b8518f6ffff }
            // n = 7, score = 200
            //   83f065               | xor                 eax, 0x65
            //   888520f6ffff         | mov                 byte ptr [ebp - 0x9e0], al
            //   8b8518f6ffff         | mov                 eax, dword ptr [ebp - 0x9e8]
            //   0405                 | add                 al, 5
            //   83f06e               | xor                 eax, 0x6e
            //   888521f6ffff         | mov                 byte ptr [ebp - 0x9df], al
            //   8b8518f6ffff         | mov                 eax, dword ptr [ebp - 0x9e8]

        $sequence_1 = { 8d8db4fdffff e8???????? 8bbd94fdffff 6a00 8b470c 0fb700 }
            // n = 6, score = 200
            //   8d8db4fdffff         | lea                 ecx, [ebp - 0x24c]
            //   e8????????           |                     
            //   8bbd94fdffff         | mov                 edi, dword ptr [ebp - 0x26c]
            //   6a00                 | push                0
            //   8b470c               | mov                 eax, dword ptr [edi + 0xc]
            //   0fb700               | movzx               eax, word ptr [eax]

        $sequence_2 = { 83c40c c685e8f5ffff1e 33d2 c685e9f5ffff19 8a85e8f5ffff c685eaf5ffff00 66660f1f840000000000 }
            // n = 7, score = 200
            //   83c40c               | add                 esp, 0xc
            //   c685e8f5ffff1e       | mov                 byte ptr [ebp - 0xa18], 0x1e
            //   33d2                 | xor                 edx, edx
            //   c685e9f5ffff19       | mov                 byte ptr [ebp - 0xa17], 0x19
            //   8a85e8f5ffff         | mov                 al, byte ptr [ebp - 0xa18]
            //   c685eaf5ffff00       | mov                 byte ptr [ebp - 0xa16], 0
            //   66660f1f840000000000     | nop    word ptr [eax + eax]

        $sequence_3 = { 0f1f840000000000 8a841590feffff 0fbe8d8cfeffff 0fbec0 33c1 88841590feffff 42 }
            // n = 7, score = 200
            //   0f1f840000000000     | nop                 dword ptr [eax + eax]
            //   8a841590feffff       | mov                 al, byte ptr [ebp + edx - 0x170]
            //   0fbe8d8cfeffff       | movsx               ecx, byte ptr [ebp - 0x174]
            //   0fbec0               | movsx               eax, al
            //   33c1                 | xor                 eax, ecx
            //   88841590feffff       | mov                 byte ptr [ebp + edx - 0x170], al
            //   42                   | inc                 edx

        $sequence_4 = { 8d8d2cdeffff e9???????? 8d8d30deffff e9???????? 8d8d34deffff e9???????? 8d8d2cdeffff }
            // n = 7, score = 200
            //   8d8d2cdeffff         | lea                 ecx, [ebp - 0x21d4]
            //   e9????????           |                     
            //   8d8d30deffff         | lea                 ecx, [ebp - 0x21d0]
            //   e9????????           |                     
            //   8d8d34deffff         | lea                 ecx, [ebp - 0x21cc]
            //   e9????????           |                     
            //   8d8d2cdeffff         | lea                 ecx, [ebp - 0x21d4]

        $sequence_5 = { ffb554feffff ffd6 c78558fdffff43000000 8b8558fdffff 83f072 88855cfdffff 8b8558fdffff }
            // n = 7, score = 200
            //   ffb554feffff         | push                dword ptr [ebp - 0x1ac]
            //   ffd6                 | call                esi
            //   c78558fdffff43000000     | mov    dword ptr [ebp - 0x2a8], 0x43
            //   8b8558fdffff         | mov                 eax, dword ptr [ebp - 0x2a8]
            //   83f072               | xor                 eax, 0x72
            //   88855cfdffff         | mov                 byte ptr [ebp - 0x2a4], al
            //   8b8558fdffff         | mov                 eax, dword ptr [ebp - 0x2a8]

        $sequence_6 = { f7d8 1bc0 2500008000 50 ff770c 8d85d0f7ffff 6a00 }
            // n = 7, score = 200
            //   f7d8                 | neg                 eax
            //   1bc0                 | sbb                 eax, eax
            //   2500008000           | and                 eax, 0x800000
            //   50                   | push                eax
            //   ff770c               | push                dword ptr [edi + 0xc]
            //   8d85d0f7ffff         | lea                 eax, [ebp - 0x830]
            //   6a00                 | push                0

        $sequence_7 = { 894588 c745dc00000000 c745e000000000 8d7584 c78560ffffff00000000 c78564ffffff00000000 c78568ffffff00000000 }
            // n = 7, score = 200
            //   894588               | mov                 dword ptr [ebp - 0x78], eax
            //   c745dc00000000       | mov                 dword ptr [ebp - 0x24], 0
            //   c745e000000000       | mov                 dword ptr [ebp - 0x20], 0
            //   8d7584               | lea                 esi, [ebp - 0x7c]
            //   c78560ffffff00000000     | mov    dword ptr [ebp - 0xa0], 0
            //   c78564ffffff00000000     | mov    dword ptr [ebp - 0x9c], 0
            //   c78568ffffff00000000     | mov    dword ptr [ebp - 0x98], 0

        $sequence_8 = { e8???????? 6a04 56 e8???????? 6a04 ff75dc e8???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   6a04                 | push                4
            //   56                   | push                esi
            //   e8????????           |                     
            //   6a04                 | push                4
            //   ff75dc               | push                dword ptr [ebp - 0x24]
            //   e8????????           |                     

        $sequence_9 = { 8d4da8 e8???????? 8b75ac 8d4db8 83c41c e8???????? 8b7da0 }
            // n = 7, score = 200
            //   8d4da8               | lea                 ecx, [ebp - 0x58]
            //   e8????????           |                     
            //   8b75ac               | mov                 esi, dword ptr [ebp - 0x54]
            //   8d4db8               | lea                 ecx, [ebp - 0x48]
            //   83c41c               | add                 esp, 0x1c
            //   e8????????           |                     
            //   8b7da0               | mov                 edi, dword ptr [ebp - 0x60]

    condition:
        7 of them and filesize < 1245184
}