rule win_lolsnif_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        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 = "20220513"
        malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26"
        malpedia_version = "20220516"
        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 = { 7532 be???????? 33c9 8bc6 41 f00fc108 6a00 }
            // n = 7, score = 200
            //   7532                 | jne                 0x34
            //   be????????           |                     
            //   33c9                 | xor                 ecx, ecx
            //   8bc6                 | mov                 eax, esi
            //   41                   | inc                 ecx
            //   f00fc108             | lock xadd           dword ptr [eax], ecx
            //   6a00                 | push                0

        $sequence_1 = { ff742408 ff36 ff15???????? ff36 8bf8 }
            // n = 5, score = 200
            //   ff742408             | push                dword ptr [esp + 8]
            //   ff36                 | push                dword ptr [esi]
            //   ff15????????         |                     
            //   ff36                 | push                dword ptr [esi]
            //   8bf8                 | mov                 edi, eax

        $sequence_2 = { 3bc3 6817010000 1bc0 6a0a 23c6 }
            // n = 5, score = 200
            //   3bc3                 | cmp                 eax, ebx
            //   6817010000           | push                0x117
            //   1bc0                 | sbb                 eax, eax
            //   6a0a                 | push                0xa
            //   23c6                 | and                 eax, esi

        $sequence_3 = { e8???????? 85c0 0f84e6000000 c745fc10000000 8b450c 83e00c 3c0c }
            // n = 7, score = 200
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   0f84e6000000         | je                  0xec
            //   c745fc10000000       | mov                 dword ptr [ebp - 4], 0x10
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   83e00c               | and                 eax, 0xc
            //   3c0c                 | cmp                 al, 0xc

        $sequence_4 = { 68???????? 53 ffd6 85c0 750e 8b4d10 57 }
            // n = 7, score = 200
            //   68????????           |                     
            //   53                   | push                ebx
            //   ffd6                 | call                esi
            //   85c0                 | test                eax, eax
            //   750e                 | jne                 0x10
            //   8b4d10               | mov                 ecx, dword ptr [ebp + 0x10]
            //   57                   | push                edi

        $sequence_5 = { ff742410 e8???????? e9???????? 395c2434 8b3d???????? 740e ff742434 }
            // n = 7, score = 200
            //   ff742410             | push                dword ptr [esp + 0x10]
            //   e8????????           |                     
            //   e9????????           |                     
            //   395c2434             | cmp                 dword ptr [esp + 0x34], ebx
            //   8b3d????????         |                     
            //   740e                 | je                  0x10
            //   ff742434             | push                dword ptr [esp + 0x34]

        $sequence_6 = { ff35???????? e8???????? 8bd8 33ff 3bdf 0f84f9000000 }
            // n = 6, score = 200
            //   ff35????????         |                     
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   33ff                 | xor                 edi, edi
            //   3bdf                 | cmp                 ebx, edi
            //   0f84f9000000         | je                  0xff

        $sequence_7 = { 75f1 c3 55 8bec 83ec2c 8b5010 }
            // n = 6, score = 200
            //   75f1                 | jne                 0xfffffff3
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83ec2c               | sub                 esp, 0x2c
            //   8b5010               | mov                 edx, dword ptr [eax + 0x10]

        $sequence_8 = { 85db 7414 a1???????? 351de6f90e 50 8bd3 }
            // n = 6, score = 200
            //   85db                 | test                ebx, ebx
            //   7414                 | je                  0x16
            //   a1????????           |                     
            //   351de6f90e           | xor                 eax, 0xef9e61d
            //   50                   | push                eax
            //   8bd3                 | mov                 edx, ebx

        $sequence_9 = { 395d14 8b3d???????? 8b1d???????? 7421 6a2c }
            // n = 5, score = 200
            //   395d14               | cmp                 dword ptr [ebp + 0x14], ebx
            //   8b3d????????         |                     
            //   8b1d????????         |                     
            //   7421                 | je                  0x23
            //   6a2c                 | push                0x2c

    condition:
        7 of them and filesize < 425984
}