rule win_glasses_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2024-10-31"
        version = "1"
        description = "Detects win.glasses."
        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.glasses"
        malpedia_rule_date = "20241030"
        malpedia_hash = "26e26953c49c8efafbf72a38076855d578e0a2e4"
        malpedia_version = "20241030"
        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 = { ffd0 8d8d38f9ffff e8???????? 53 8d8d38f9ffff 898534f9ffff 51 }
            // n = 7, score = 100
            //   ffd0                 | call                eax
            //   8d8d38f9ffff         | lea                 ecx, [ebp - 0x6c8]
            //   e8????????           |                     
            //   53                   | push                ebx
            //   8d8d38f9ffff         | lea                 ecx, [ebp - 0x6c8]
            //   898534f9ffff         | mov                 dword ptr [ebp - 0x6cc], eax
            //   51                   | push                ecx

        $sequence_1 = { e8???????? 8d8d5cfaffff e8???????? 8bf8 33c0 89b5c0f9ffff 68c7000000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d8d5cfaffff         | lea                 ecx, [ebp - 0x5a4]
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   33c0                 | xor                 eax, eax
            //   89b5c0f9ffff         | mov                 dword ptr [ebp - 0x640], esi
            //   68c7000000           | push                0xc7

        $sequence_2 = { e8???????? 8d8d58f7ffff c745fcffffffff e8???????? eb2e 8b8d94f7ffff 8a1439 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d8d58f7ffff         | lea                 ecx, [ebp - 0x8a8]
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   e8????????           |                     
            //   eb2e                 | jmp                 0x30
            //   8b8d94f7ffff         | mov                 ecx, dword ptr [ebp - 0x86c]
            //   8a1439               | mov                 dl, byte ptr [ecx + edi]

        $sequence_3 = { e8???????? 83c404 80bea100000000 b301 0f8585000000 8b86a4000000 6a01 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   80bea100000000       | cmp                 byte ptr [esi + 0xa1], 0
            //   b301                 | mov                 bl, 1
            //   0f8585000000         | jne                 0x8b
            //   8b86a4000000         | mov                 eax, dword ptr [esi + 0xa4]
            //   6a01                 | push                1

        $sequence_4 = { e8???????? 8bf8 83c404 85ff 0f84dbfdffff 683b960000 8bcf }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   83c404               | add                 esp, 4
            //   85ff                 | test                edi, edi
            //   0f84dbfdffff         | je                  0xfffffde1
            //   683b960000           | push                0x963b
            //   8bcf                 | mov                 ecx, edi

        $sequence_5 = { e8???????? 8bf0 83c404 85f6 0f84add7ffff 681b010000 8bce }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   83c404               | add                 esp, 4
            //   85f6                 | test                esi, esi
            //   0f84add7ffff         | je                  0xffffd7b3
            //   681b010000           | push                0x11b
            //   8bce                 | mov                 ecx, esi

        $sequence_6 = { e8???????? 8986b4010000 e8???????? 8986e8010000 e8???????? 8986ec010000 8d4de8 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8986b4010000         | mov                 dword ptr [esi + 0x1b4], eax
            //   e8????????           |                     
            //   8986e8010000         | mov                 dword ptr [esi + 0x1e8], eax
            //   e8????????           |                     
            //   8986ec010000         | mov                 dword ptr [esi + 0x1ec], eax
            //   8d4de8               | lea                 ecx, [ebp - 0x18]

        $sequence_7 = { e8???????? 8d8d58ffffff e8???????? 8d8d3cffffff c645fc04 e8???????? 837f3803 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d8d58ffffff         | lea                 ecx, [ebp - 0xa8]
            //   e8????????           |                     
            //   8d8d3cffffff         | lea                 ecx, [ebp - 0xc4]
            //   c645fc04             | mov                 byte ptr [ebp - 4], 4
            //   e8????????           |                     
            //   837f3803             | cmp                 dword ptr [edi + 0x38], 3

        $sequence_8 = { c645fc01 e8???????? 8d4d98 c645fc00 e8???????? 8d4de4 c745fcffffffff }
            // n = 7, score = 100
            //   c645fc01             | mov                 byte ptr [ebp - 4], 1
            //   e8????????           |                     
            //   8d4d98               | lea                 ecx, [ebp - 0x68]
            //   c645fc00             | mov                 byte ptr [ebp - 4], 0
            //   e8????????           |                     
            //   8d4de4               | lea                 ecx, [ebp - 0x1c]
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff

        $sequence_9 = { eb07 e8???????? 8bf8 33f6 85ff 7e2b 8bff }
            // n = 7, score = 100
            //   eb07                 | jmp                 9
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   33f6                 | xor                 esi, esi
            //   85ff                 | test                edi, edi
            //   7e2b                 | jle                 0x2d
            //   8bff                 | mov                 edi, edi

    condition:
        7 of them and filesize < 4177920
}

/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/

rule win_glasses_w1 {
    meta:
        description = "Strings used by Glasses"
        author = "Seth Hardy"
        last_modified = "2014-07-22"
        source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Glasses.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.glasses"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
        
    strings:
        $ = "thequickbrownfxjmpsvalzydg"
        $ = "Mozilla/4.0 (compatible; Windows NT 5.1; MSIE 7.0; Trident/4.0; %s.%s)"
        $ = "\" target=\"NewRef\"></a>"
 
    condition:
        all of them

}