rule win_lolsnif_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.lolsnif."
        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.lolsnif"
        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 = { 8d4508 50 ff7508 e8???????? 85c0 7505 894508 }
            // n = 7, score = 200
            //   8d4508               | lea                 eax, [ebp + 8]
            //   50                   | push                eax
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7505                 | jne                 7
            //   894508               | mov                 dword ptr [ebp + 8], eax

        $sequence_1 = { 8b45f8 5f 5e 5b c9 c21000 ff742404 }
            // n = 7, score = 200
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   c9                   | leave               
            //   c21000               | ret                 0x10
            //   ff742404             | push                dword ptr [esp + 4]

        $sequence_2 = { ab 0f8497000000 381e 0f848f000000 395d14 8b3d???????? 8b1d???????? }
            // n = 7, score = 200
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   0f8497000000         | je                  0x9d
            //   381e                 | cmp                 byte ptr [esi], bl
            //   0f848f000000         | je                  0x95
            //   395d14               | cmp                 dword ptr [ebp + 0x14], ebx
            //   8b3d????????         |                     
            //   8b1d????????         |                     

        $sequence_3 = { 53 ff742418 ff15???????? 85c0 7526 ff35???????? 8d442454 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   ff742418             | push                dword ptr [esp + 0x18]
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7526                 | jne                 0x28
            //   ff35????????         |                     
            //   8d442454             | lea                 eax, [esp + 0x54]

        $sequence_4 = { 85c0 8945fc 0f8557010000 a1???????? 8b75f4 35bbb19fde }
            // n = 6, score = 200
            //   85c0                 | test                eax, eax
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   0f8557010000         | jne                 0x15d
            //   a1????????           |                     
            //   8b75f4               | mov                 esi, dword ptr [ebp - 0xc]
            //   35bbb19fde           | xor                 eax, 0xde9fb1bb

        $sequence_5 = { ab ab 895c240c ab 0f8497000000 381e }
            // n = 6, score = 200
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   895c240c             | mov                 dword ptr [esp + 0xc], ebx
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   0f8497000000         | je                  0x9d
            //   381e                 | cmp                 byte ptr [esi], bl

        $sequence_6 = { a3???????? 0f84a2010000 897004 bd???????? 33c9 8930 8bc5 }
            // n = 7, score = 200
            //   a3????????           |                     
            //   0f84a2010000         | je                  0x1a8
            //   897004               | mov                 dword ptr [eax + 4], esi
            //   bd????????           |                     
            //   33c9                 | xor                 ecx, ecx
            //   8930                 | mov                 dword ptr [eax], esi
            //   8bc5                 | mov                 eax, ebp

        $sequence_7 = { 81f94f503a00 750f 813d????????141eeae3 7519 83c003 803821 }
            // n = 6, score = 200
            //   81f94f503a00         | cmp                 ecx, 0x3a504f
            //   750f                 | jne                 0x11
            //   813d????????141eeae3     |     
            //   7519                 | jne                 0x1b
            //   83c003               | add                 eax, 3
            //   803821               | cmp                 byte ptr [eax], 0x21

        $sequence_8 = { 0f84fe030000 68???????? ff15???????? e9???????? 6a02 }
            // n = 5, score = 200
            //   0f84fe030000         | je                  0x404
            //   68????????           |                     
            //   ff15????????         |                     
            //   e9????????           |                     
            //   6a02                 | push                2

        $sequence_9 = { 85c0 0f8489000000 e8???????? 85c0 7431 e8???????? 85c0 }
            // n = 7, score = 200
            //   85c0                 | test                eax, eax
            //   0f8489000000         | je                  0x8f
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7431                 | je                  0x33
            //   e8????????           |                     
            //   85c0                 | test                eax, eax

    condition:
        7 of them and filesize < 425984
}