rule win_lolsnif_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        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 = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 894c240c eb4a e8???????? 85f6 7522 83f802 }
            // n = 6, score = 200
            //   894c240c             | mov                 dword ptr [esp + 0xc], ecx
            //   eb4a                 | jmp                 0x4c
            //   e8????????           |                     
            //   85f6                 | test                esi, esi
            //   7522                 | jne                 0x24
            //   83f802               | cmp                 eax, 2

        $sequence_1 = { ff4c2408 75ee 5e c20800 55 8bec 83ec14 }
            // n = 7, score = 200
            //   ff4c2408             | dec                 dword ptr [esp + 8]
            //   75ee                 | jne                 0xfffffff0
            //   5e                   | pop                 esi
            //   c20800               | ret                 8
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83ec14               | sub                 esp, 0x14

        $sequence_2 = { 6aff 8945f0 57 8d45ec 50 6a02 895dec }
            // n = 7, score = 200
            //   6aff                 | push                -1
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   57                   | push                edi
            //   8d45ec               | lea                 eax, [ebp - 0x14]
            //   50                   | push                eax
            //   6a02                 | push                2
            //   895dec               | mov                 dword ptr [ebp - 0x14], ebx

        $sequence_3 = { 53 57 ff35???????? ff15???????? 397df8 7528 }
            // n = 6, score = 200
            //   53                   | push                ebx
            //   57                   | push                edi
            //   ff35????????         |                     
            //   ff15????????         |                     
            //   397df8               | cmp                 dword ptr [ebp - 8], edi
            //   7528                 | jne                 0x2a

        $sequence_4 = { 8bec 83ec0c 56 8d45f4 50 e8???????? }
            // n = 6, score = 200
            //   8bec                 | mov                 ebp, esp
            //   83ec0c               | sub                 esp, 0xc
            //   56                   | push                esi
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_5 = { 8b33 e8???????? 8b7304 e8???????? 8b7308 e8???????? 8b433c }
            // n = 7, score = 200
            //   8b33                 | mov                 esi, dword ptr [ebx]
            //   e8????????           |                     
            //   8b7304               | mov                 esi, dword ptr [ebx + 4]
            //   e8????????           |                     
            //   8b7308               | mov                 esi, dword ptr [ebx + 8]
            //   e8????????           |                     
            //   8b433c               | mov                 eax, dword ptr [ebx + 0x3c]

        $sequence_6 = { 3d0c293b74 741a 3d6c42a07c 0f8523030000 ff7508 }
            // n = 5, score = 200
            //   3d0c293b74           | cmp                 eax, 0x743b290c
            //   741a                 | je                  0x1c
            //   3d6c42a07c           | cmp                 eax, 0x7ca0426c
            //   0f8523030000         | jne                 0x329
            //   ff7508               | push                dword ptr [ebp + 8]

        $sequence_7 = { 8944242c c744242408000000 ff15???????? 85c0 89442410 }
            // n = 5, score = 200
            //   8944242c             | mov                 dword ptr [esp + 0x2c], eax
            //   c744242408000000     | mov                 dword ptr [esp + 0x24], 8
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   89442410             | mov                 dword ptr [esp + 0x10], eax

        $sequence_8 = { c745e801000000 c745ec10270000 c745f0e8030000 c745f4e0930400 e8???????? 8bf0 }
            // n = 6, score = 200
            //   c745e801000000       | mov                 dword ptr [ebp - 0x18], 1
            //   c745ec10270000       | mov                 dword ptr [ebp - 0x14], 0x2710
            //   c745f0e8030000       | mov                 dword ptr [ebp - 0x10], 0x3e8
            //   c745f4e0930400       | mov                 dword ptr [ebp - 0xc], 0x493e0
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax

        $sequence_9 = { 53 8d4508 50 e8???????? ff7508 ffd6 ff7508 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   8d4508               | lea                 eax, [ebp + 8]
            //   50                   | push                eax
            //   e8????????           |                     
            //   ff7508               | push                dword ptr [ebp + 8]
            //   ffd6                 | call                esi
            //   ff7508               | push                dword ptr [ebp + 8]

    condition:
        7 of them and filesize < 425984
}