rule win_komprogo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.komprogo."
        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.komprogo"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        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 = { 8945fc ff15???????? 8bf0 85f6 0f849b000000 66c7069090 66c74602908b }
            // n = 7, score = 100
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   ff15????????         |                     
            //   8bf0                 | mov                 esi, eax
            //   85f6                 | test                esi, esi
            //   0f849b000000         | je                  0xa1
            //   66c7069090           | mov                 word ptr [esi], 0x9090
            //   66c74602908b         | mov                 word ptr [esi + 2], 0x8b90

        $sequence_1 = { 83c404 5f 5e 5b 8b8c24980a0000 33cc e8???????? }
            // n = 7, score = 100
            //   83c404               | add                 esp, 4
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   8b8c24980a0000       | mov                 ecx, dword ptr [esp + 0xa98]
            //   33cc                 | xor                 ecx, esp
            //   e8????????           |                     

        $sequence_2 = { 899e73350000 8986bb830200 51 8b4dfc 8d8664d20300 e8???????? }
            // n = 6, score = 100
            //   899e73350000         | mov                 dword ptr [esi + 0x3573], ebx
            //   8986bb830200         | mov                 dword ptr [esi + 0x283bb], eax
            //   51                   | push                ecx
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   8d8664d20300         | lea                 eax, [esi + 0x3d264]
            //   e8????????           |                     

        $sequence_3 = { 8d86cc910300 898600940300 8d8ed05e0300 898ee8ae0300 8d96a8720300 899630880200 }
            // n = 6, score = 100
            //   8d86cc910300         | lea                 eax, [esi + 0x391cc]
            //   898600940300         | mov                 dword ptr [esi + 0x39400], eax
            //   8d8ed05e0300         | lea                 ecx, [esi + 0x35ed0]
            //   898ee8ae0300         | mov                 dword ptr [esi + 0x3aee8], ecx
            //   8d96a8720300         | lea                 edx, [esi + 0x372a8]
            //   899630880200         | mov                 dword ptr [esi + 0x28830], edx

        $sequence_4 = { 8986b2730200 8d8692630200 8986fc720300 8d8670ee0300 89864d230300 8d96a96a0300 8996ccbf0300 }
            // n = 7, score = 100
            //   8986b2730200         | mov                 dword ptr [esi + 0x273b2], eax
            //   8d8692630200         | lea                 eax, [esi + 0x26392]
            //   8986fc720300         | mov                 dword ptr [esi + 0x372fc], eax
            //   8d8670ee0300         | lea                 eax, [esi + 0x3ee70]
            //   89864d230300         | mov                 dword ptr [esi + 0x3234d], eax
            //   8d96a96a0300         | lea                 edx, [esi + 0x36aa9]
            //   8996ccbf0300         | mov                 dword ptr [esi + 0x3bfcc], edx

        $sequence_5 = { 8d9700040000 52 56 ff15???????? 85c0 743a }
            // n = 6, score = 100
            //   8d9700040000         | lea                 edx, [edi + 0x400]
            //   52                   | push                edx
            //   56                   | push                esi
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   743a                 | je                  0x3c

        $sequence_6 = { 33d2 8bf0 85f6 0f95c2 8bfa 33c0 }
            // n = 6, score = 100
            //   33d2                 | xor                 edx, edx
            //   8bf0                 | mov                 esi, eax
            //   85f6                 | test                esi, esi
            //   0f95c2               | setne               dl
            //   8bfa                 | mov                 edi, edx
            //   33c0                 | xor                 eax, eax

        $sequence_7 = { 75f6 8b4d08 56 51 ff15???????? 85c0 740c }
            // n = 7, score = 100
            //   75f6                 | jne                 0xfffffff8
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   56                   | push                esi
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   740c                 | je                  0xe

        $sequence_8 = { 740e 83bc308c00000000 7404 b101 eb02 32c9 }
            // n = 6, score = 100
            //   740e                 | je                  0x10
            //   83bc308c00000000     | cmp                 dword ptr [eax + esi + 0x8c], 0
            //   7404                 | je                  6
            //   b101                 | mov                 cl, 1
            //   eb02                 | jmp                 4
            //   32c9                 | xor                 cl, cl

        $sequence_9 = { 898e22410200 8d966b310300 899650360300 8986f27e0200 8d8698a40300 898694a40300 8d8694750300 }
            // n = 7, score = 100
            //   898e22410200         | mov                 dword ptr [esi + 0x24122], ecx
            //   8d966b310300         | lea                 edx, [esi + 0x3316b]
            //   899650360300         | mov                 dword ptr [esi + 0x33650], edx
            //   8986f27e0200         | mov                 dword ptr [esi + 0x27ef2], eax
            //   8d8698a40300         | lea                 eax, [esi + 0x3a498]
            //   898694a40300         | mov                 dword ptr [esi + 0x3a494], eax
            //   8d8694750300         | lea                 eax, [esi + 0x37594]

    condition:
        7 of them and filesize < 1045504
}