rule win_netwire_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-05-30"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.netwire"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        malpedia_license = "CC BY-NC-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 / approach 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 = { e8???????? c7042446000000 e8???????? c7042400000000 }
            // n = 4, score = 1100
            //   e8????????           |                     
            //   c7042446000000       | mov                 dword ptr [esp], 0x46
            //   e8????????           |                     
            //   c7042400000000       | mov                 dword ptr [esp], 0

        $sequence_1 = { e8???????? c7042446000000 e8???????? c7042449000000 e8???????? c7042446000000 e8???????? }
            // n = 7, score = 1100
            //   e8????????           |                     
            //   c7042446000000       | mov                 dword ptr [esp], 0x46
            //   e8????????           |                     
            //   c7042449000000       | mov                 dword ptr [esp], 0x49
            //   e8????????           |                     
            //   c7042446000000       | mov                 dword ptr [esp], 0x46
            //   e8????????           |                     

        $sequence_2 = { e8???????? a3???????? c7042440000000 e8???????? }
            // n = 4, score = 1100
            //   e8????????           |                     
            //   a3????????           |                     
            //   c7042440000000       | mov                 dword ptr [esp], 0x40
            //   e8????????           |                     

        $sequence_3 = { c744241004020000 8944240c c744240801000000 c744240407000000 }
            // n = 4, score = 1100
            //   c744241004020000     | mov                 dword ptr [esp + 0x10], 0x204
            //   8944240c             | mov                 dword ptr [esp + 0xc], eax
            //   c744240801000000     | mov                 dword ptr [esp + 8], 1
            //   c744240407000000     | mov                 dword ptr [esp + 4], 7

        $sequence_4 = { e8???????? c704244a000000 e8???????? c7042446000000 e8???????? }
            // n = 5, score = 1100
            //   e8????????           |                     
            //   c704244a000000       | mov                 dword ptr [esp], 0x4a
            //   e8????????           |                     
            //   c7042446000000       | mov                 dword ptr [esp], 0x46
            //   e8????????           |                     

        $sequence_5 = { 83ec0c c7442408???????? c7442404???????? c70424???????? e8???????? }
            // n = 5, score = 1100
            //   83ec0c               | sub                 esp, 0xc
            //   c7442408????????     |                     
            //   c7442404????????     |                     
            //   c70424????????       |                     
            //   e8????????           |                     

        $sequence_6 = { c744241000000000 c744240c00000000 c744240800000000 c744240400000000 c7042408000000 e8???????? 83ec14 }
            // n = 7, score = 1100
            //   c744241000000000     | mov                 dword ptr [esp + 0x10], 0
            //   c744240c00000000     | mov                 dword ptr [esp + 0xc], 0
            //   c744240800000000     | mov                 dword ptr [esp + 8], 0
            //   c744240400000000     | mov                 dword ptr [esp + 4], 0
            //   c7042408000000       | mov                 dword ptr [esp], 8
            //   e8????????           |                     
            //   83ec14               | sub                 esp, 0x14

        $sequence_7 = { e8???????? c7042401000000 e8???????? 84c0 }
            // n = 4, score = 1100
            //   e8????????           |                     
            //   c7042401000000       | mov                 dword ptr [esp], 1
            //   e8????????           |                     
            //   84c0                 | test                al, al

        $sequence_8 = { a2???????? e8???????? e8???????? e8???????? e8???????? e8???????? }
            // n = 6, score = 1100
            //   a2????????           |                     
            //   e8????????           |                     
            //   e8????????           |                     
            //   e8????????           |                     
            //   e8????????           |                     
            //   e8????????           |                     

        $sequence_9 = { 890424 e8???????? 83ec20 3d03010000 }
            // n = 4, score = 1100
            //   890424               | mov                 dword ptr [esp], eax
            //   e8????????           |                     
            //   83ec20               | sub                 esp, 0x20
            //   3d03010000           | cmp                 eax, 0x103

    condition:
        7 of them and filesize < 401408
}

rule win_netwire_w0 {
	meta:
		description = "NetWiredRC"
		author = "Jean-Philippe Teissier / @Jipe_"
		date = "2014-12-23"
		filetype = "memory"
		version = "1.1" 
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/netwiredRC.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.netwire"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
        
	strings:
		$mutex = "LmddnIkX"

		$str1 = "%s.Identifier"
		$str2 = "%d:%I64u:%s%s;"
		$str3 = "%s%.2d-%.2d-%.4d"
		$str4 = "[%s] - [%.2d/%.2d/%d %.2d:%.2d:%.2d]"
		$str5 = "%.2d/%.2d/%d %.2d:%.2d:%.2d"
		
		$klg1 = "[Backspace]"
		$klg2 = "[Enter]"
		$klg3 = "[Tab]"
		$klg4 = "[Arrow Left]"
		$klg5 = "[Arrow Up]"
		$klg6 = "[Arrow Right]"
		$klg7 = "[Arrow Down]"
		$klg8 = "[Home]"
		$klg9 = "[Page Up]"
		$klg10 = "[Page Down]"
		$klg11 = "[End]"
		$klg12 = "[Break]"
		$klg13 = "[Delete]"
		$klg14 = "[Insert]"
		$klg15 = "[Print Screen]"
		$klg16 = "[Scroll Lock]"
		$klg17 = "[Caps Lock]"
		$klg18 = "[Alt]"
		$klg19 = "[Esc]"
		$klg20 = "[Ctrl+%c]"

	condition: 
		$mutex or (1 of ($str*) and 1 of ($klg*))
}

/*
    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_netwire_w1 {
	meta:
		author = " Kevin Breen <kevin@techanarchy.net>"
		date = "2014/04"
		ref = "http://malwareconfig.com/stats/NetWire"
		maltype = "Remote Access Trojan"
		filetype = "exe"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/netwiredRC.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.netwire"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
		
    strings:
        $string1 = "[Scroll Lock]"
        $string2 = "[Shift Lock]"
        $string3 = "200 OK"
        $string4 = "%s.Identifier"
        $string5 = "sqlite3_column_text"
        $string6 = "[%s] - [%.2d/%.2d/%d %.2d:%.2d:%.2d]"
    condition:
        all of them
}