rule win_prometei_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.prometei."
        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.prometei"
        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 = { 2bc7 2bd7 03f0 81c200200000 b81a191919 }
            // n = 5, score = 100
            //   2bc7                 | sub                 eax, edi
            //   2bd7                 | sub                 edx, edi
            //   03f0                 | add                 esi, eax
            //   81c200200000         | add                 edx, 0x2000
            //   b81a191919           | mov                 eax, 0x1919191a

        $sequence_1 = { 009c003dbe839a 47 fc 84b3e61c0292 }
            // n = 4, score = 100
            //   009c003dbe839a       | add                 byte ptr [eax + eax - 0x657c41c3], bl
            //   47                   | inc                 edi
            //   fc                   | cld                 
            //   84b3e61c0292         | test                byte ptr [ebx - 0x6dfde31a], dh

        $sequence_2 = { e8???????? 5f 5e 5b 8be5 5d 8be3 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   8be3                 | mov                 esp, ebx

        $sequence_3 = { 10d0 00bb2d784334 2cbb 8d3b }
            // n = 4, score = 100
            //   10d0                 | adc                 al, dl
            //   00bb2d784334         | add                 byte ptr [ebx + 0x3443782d], bh
            //   2cbb                 | sub                 al, 0xbb
            //   8d3b                 | lea                 edi, [ebx]

        $sequence_4 = { 0000 004889 ec 5d }
            // n = 4, score = 100
            //   0000                 | add                 byte ptr [eax], al
            //   004889               | add                 byte ptr [eax - 0x77], cl
            //   ec                   | in                  al, dx
            //   5d                   | pop                 ebp

        $sequence_5 = { 2cbb 8d3b 61 804070a0 }
            // n = 4, score = 100
            //   2cbb                 | sub                 al, 0xbb
            //   8d3b                 | lea                 edi, [ebx]
            //   61                   | popal               
            //   804070a0             | add                 byte ptr [eax + 0x70], 0xa0

        $sequence_6 = { 81c200200000 b81a191919 2bc1 3bd0 }
            // n = 4, score = 100
            //   81c200200000         | add                 edx, 0x2000
            //   b81a191919           | mov                 eax, 0x1919191a
            //   2bc1                 | sub                 eax, ecx
            //   3bd0                 | cmp                 edx, eax

        $sequence_7 = { 68???????? 56 ff15???????? 8b3d???????? 56 }
            // n = 5, score = 100
            //   68????????           |                     
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8b3d????????         |                     
            //   56                   | push                esi

        $sequence_8 = { 61 804070a0 dfb734381320 f1 a5 90 f4 }
            // n = 7, score = 100
            //   61                   | popal               
            //   804070a0             | add                 byte ptr [eax + 0x70], 0xa0
            //   dfb734381320         | fbstp               tbyte ptr [edi + 0x20133834]
            //   f1                   | int1                
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   90                   | nop                 
            //   f4                   | hlt                 

        $sequence_9 = { 004153 6a33 51 4c }
            // n = 4, score = 100
            //   004153               | add                 byte ptr [ecx + 0x53], al
            //   6a33                 | push                0x33
            //   51                   | push                ecx
            //   4c                   | dec                 esp

        $sequence_10 = { 0000 6681c1f900 f3a4 48 }
            // n = 4, score = 100
            //   0000                 | add                 byte ptr [eax], al
            //   6681c1f900           | add                 cx, 0xf9
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   48                   | dec                 eax

        $sequence_11 = { 0105???????? 3034a0 0e 300c06 }
            // n = 4, score = 100
            //   0105????????         |                     
            //   3034a0               | xor                 byte ptr [eax], dh
            //   0e                   | push                cs
            //   300c06               | xor                 byte ptr [esi + eax], cl

        $sequence_12 = { 0081bb7a3644 98 f1 35ad3298f0 }
            // n = 4, score = 100
            //   0081bb7a3644         | add                 byte ptr [ecx + 0x44367abb], al
            //   98                   | cwde                
            //   f1                   | int1                
            //   35ad3298f0           | xor                 eax, 0xf09832ad

        $sequence_13 = { 0037 c0880b44e15bef 44 27 }
            // n = 4, score = 100
            //   0037                 | add                 byte ptr [edi], dh
            //   c0880b44e15bef       | ror                 byte ptr [eax + 0x5be1440b], 0xef
            //   44                   | inc                 esp
            //   27                   | daa                 

        $sequence_14 = { b9???????? 8ac2 0245f0 3001 85d2 740f }
            // n = 6, score = 100
            //   b9????????           |                     
            //   8ac2                 | mov                 al, dl
            //   0245f0               | add                 al, byte ptr [ebp - 0x10]
            //   3001                 | xor                 byte ptr [ecx], al
            //   85d2                 | test                edx, edx
            //   740f                 | je                  0x11

        $sequence_15 = { 009ec024c023 c028e0 1d2a0a41ba a6 }
            // n = 4, score = 100
            //   009ec024c023         | add                 byte ptr [esi + 0x23c024c0], bl
            //   c028e0               | shr                 byte ptr [eax], 0xe0
            //   1d2a0a41ba           | sbb                 eax, 0xba410a2a
            //   a6                   | cmpsb               byte ptr [esi], byte ptr es:[edi]

    condition:
        7 of them and filesize < 51014656
}