rule win_lolsnif_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { ff7508 53 53 6808010000 eb8b 3da3dc0816 0f8482000000 }
            // n = 7, score = 200
            //   ff7508               | push                dword ptr [ebp + 8]
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   6808010000           | push                0x108
            //   eb8b                 | jmp                 0xffffff8d
            //   3da3dc0816           | cmp                 eax, 0x1608dca3
            //   0f8482000000         | je                  0x88

        $sequence_1 = { ff7508 53 53 680b010000 e9???????? a1???????? 83c808 }
            // n = 7, score = 200
            //   ff7508               | push                dword ptr [ebp + 8]
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   680b010000           | push                0x10b
            //   e9????????           |                     
            //   a1????????           |                     
            //   83c808               | or                  eax, 8

        $sequence_2 = { e8???????? 3bc3 89442414 0f84b9000000 8d4c2410 51 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   3bc3                 | cmp                 eax, ebx
            //   89442414             | mov                 dword ptr [esp + 0x14], eax
            //   0f84b9000000         | je                  0xbf
            //   8d4c2410             | lea                 ecx, [esp + 0x10]
            //   51                   | push                ecx

        $sequence_3 = { ff7620 ff15???????? ff7620 ff15???????? 8b4610 85c0 53 }
            // n = 7, score = 200
            //   ff7620               | push                dword ptr [esi + 0x20]
            //   ff15????????         |                     
            //   ff7620               | push                dword ptr [esi + 0x20]
            //   ff15????????         |                     
            //   8b4610               | mov                 eax, dword ptr [esi + 0x10]
            //   85c0                 | test                eax, eax
            //   53                   | push                ebx

        $sequence_4 = { c9 c21400 55 8bec 83e4f8 83ec28 56 }
            // n = 7, score = 200
            //   c9                   | leave               
            //   c21400               | ret                 0x14
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83e4f8               | and                 esp, 0xfffffff8
            //   83ec28               | sub                 esp, 0x28
            //   56                   | push                esi

        $sequence_5 = { 8be5 5d c21400 55 8bec 56 be???????? }
            // n = 7, score = 200
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c21400               | ret                 0x14
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   56                   | push                esi
            //   be????????           |                     

        $sequence_6 = { 8d47ef beee3f0000 3bc6 7710 8d4508 50 ff7510 }
            // n = 7, score = 200
            //   8d47ef               | lea                 eax, [edi - 0x11]
            //   beee3f0000           | mov                 esi, 0x3fee
            //   3bc6                 | cmp                 eax, esi
            //   7710                 | ja                  0x12
            //   8d4508               | lea                 eax, [ebp + 8]
            //   50                   | push                eax
            //   ff7510               | push                dword ptr [ebp + 0x10]

        $sequence_7 = { e9???????? 33d2 42 52 53 8bc6 }
            // n = 6, score = 200
            //   e9????????           |                     
            //   33d2                 | xor                 edx, edx
            //   42                   | inc                 edx
            //   52                   | push                edx
            //   53                   | push                ebx
            //   8bc6                 | mov                 eax, esi

        $sequence_8 = { 57 53 33ff 57 6802001000 8bf0 }
            // n = 6, score = 200
            //   57                   | push                edi
            //   53                   | push                ebx
            //   33ff                 | xor                 edi, edi
            //   57                   | push                edi
            //   6802001000           | push                0x100002
            //   8bf0                 | mov                 esi, eax

        $sequence_9 = { 3bde 740d 53 ff15???????? }
            // n = 4, score = 200
            //   3bde                 | cmp                 ebx, esi
            //   740d                 | je                  0xf
            //   53                   | push                ebx
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 425984
}