rule DK_Brute {
	meta:
		description = "PoS Scammer Toolbox - http://goo.gl/xiIphp - file DK Brute.exe"
		author = "Florian Roth"
		date = "22.11.14"
		score = 70
		reference = "http://goo.gl/xiIphp"
		hash = "93b7c3a01c41baecfbe42461cb455265f33fbc3d"
	strings:
		$s6 = "get_CrackedCredentials" fullword ascii
		$s13 = "Same port used for two different protocols:" fullword wide
		$s18 = "coded by fLaSh" fullword ascii
		$s19 = "get_grbToolsScaningCracking" fullword ascii
	condition:
		all of them
}

rule Dx_php_php {
	meta:
		description = "Semi-Auto-generated  - file Dx.php.php.txt"
		author = "Neo23x0 Yara BRG + customization by Stefan -dfate- Molls"
		hash = "9cfe372d49fe8bf2fac8e1c534153d9b"
		id = "67d0bccb-d39a-5e30-bdc0-801525ebddd7"
	strings:
		$s0 = "print \"\\n\".'Tip: to view the file \"as is\" - open the page in <a href=\"'.Dx"
		$s2 = "$DEF_PORTS=array (1=>'tcpmux (TCP Port Service Multiplexer)',2=>'Management Util"
		$s3 = "$ra44  = rand(1,99999);$sj98 = \"sh-$ra44\";$ml = \"$sd98\";$a5 = $_SERVER['HTTP"
	condition:
		1 of them
}

rule Dx_php_php {
	meta:
		description = "Semi-Auto-generated  - file Dx.php.php.txt"
		author = "Neo23x0 Yara BRG + customization by Stefan -dfate- Molls"
		hash = "9cfe372d49fe8bf2fac8e1c534153d9b"
	strings:
		$s0 = "print \"\\n\".'Tip: to view the file \"as is\" - open the page in <a href=\"'.Dx"
		$s2 = "$DEF_PORTS=array (1=>'tcpmux (TCP Port Service Multiplexer)',2=>'Management Util"
		$s3 = "$ra44  = rand(1,99999);$sj98 = \"sh-$ra44\";$ml = \"$sd98\";$a5 = $_SERVER['HTTP"
	condition:
		1 of them
}

rule EP_10: PEiD
{
    strings:
        $a = { 50 83 C0 17 8B F0 97 33 C0 33 C9 B1 24 AC 86 C4 AC AA 86 C4 AA E2 F6 00 B8 40 00 03 00 3C 40 D2 33 8B 66 14 50 70 8B 8D 34 02 44 8B 18 10 48 70 03 BA 0C ?? ?? ?? ?? C0 33 FE 8B 30 AC 30 D0 C1 F0 10 C2 D0 30 F0 30 C2 C1 AA 10 42 42 CA C1 E2 04 5F E9 5E B1 }
    condition:
        $a at pe.entry_point

}

rule EP_ExE_Pack_V10_Elite_Coding_Group: PEiD
{
    strings:
        $a = { 60 68 ?? ?? ?? ?? B8 ?? ?? ?? ?? FF 10 }
    condition:
        $a at pe.entry_point

}

rule EP_ExE_Pack_V10_Elite_Coding_Group_additional: PEiD
{
    strings:
        $a = { 60 68 54 ?? ?? ?? B8 48 ?? ?? ?? FF 10 68 B3 ?? ?? ?? 50 B8 44 ?? ?? ?? FF 10 68 00 ?? ?? ?? 6A 40 FF D0 89 05 CA ?? ?? ?? 89 C7 BE 00 10 ?? ?? 60 FC B2 80 31 DB A4 B3 02 E8 6D 00 00 00 73 F6 31 C9 E8 64 00 00 00 73 1C 31 C0 E8 5B 00 00 00 73 23 B3 02 41 B0 10 E8 4F 00 00 00 10 C0 73 F7 75 3F AA EB D4 E8 4D 00 00 00 29 D9 75 10 E8 42 00 00 00 EB 28 AC D1 E8 74 4D 11 C9 EB 1C 91 48 C1 E0 08 AC E8 2C 00 00 00 3D 00 7D 00 00 73 0A 80 FC 05 73 06 83 F8 7F 77 02 41 41 95 89 E8 B3 01 56 89 FE 29 C6 F3 A4 5E EB 8E 00 D2 75 05 8A 16 46 10 D2 C3 }
    condition:
        $a at pe.entry_point

}

rule EP_v01_CoDe_Inside: PEiD
{
    strings:
        $a = { 50 83 C0 17 8B F0 97 33 C0 33 C9 B1 24 AC AA 86 C4 }
    condition:
        $a at pe.entry_point

}

rule EP_v02_CoDe_Inside: PEiD
{
    strings:
        $a = { 6A 00 60 E9 01 01 00 00 }
    condition:
        $a at pe.entry_point

}

rule EP_v10: PEiD
{
    strings:
        $a = { 50 83 C0 17 8B F0 97 33 C0 33 C9 B1 24 AC 86 C4 AC AA 86 C4 AA E2 F6 00 B8 40 00 03 00 3C 40 D2 33 8B 66 14 50 70 8B 8D 34 02 44 8B 18 10 48 70 03 BA 0C ?? ?? ?? ?? C0 33 FE 8B 30 AC 30 D0 C1 F0 10 C2 D0 30 F0 30 C2 C1 AA 10 42 42 CA C1 E2 04 5F E9 5E B1 }
        $b = { 50 83 C0 17 8B F0 97 33 C0 33 C9 B1 24 AC 86 C4 AC AA 86 C4 AA E2 F6 00 B8 40 00 03 00 3C 40 D2 33 8B 66 14 50 70 8B 8D 34 02 44 8B 18 10 48 70 03 BA 0C ?? ?? ?? ?? C0 33 FE 8B 30 AC 30 D0 C1 F0 10 C2 D0 30 F0 30 C2 C1 AA 10 42 42 CA C1 E2 04 5F E9 5E B1 C0 30 ?? 68 ?? ?? F3 00 C3 AA }
    condition:
        for any of ($*) : ( $ at pe.entry_point )

}

rule EP_v10_additional: PEiD
{
    strings:
        $a = { 81 EB 2A 01 8B 0F 1E 5B 03 CB 0E 51 B9 10 01 51 CB }
    condition:
        $a at pe.entry_point

}

rule EP_v20: PEiD
{
    strings:
        $a = { 60 BE ?? B0 42 ?? 8D BE ?? 60 FD FF C7 87 B0 E4 02 ?? 31 3C 4B DF 57 83 CD FF EB 0E 90 90 90 90 8A 06 46 88 07 47 01 DB 75 07 8B 1E 83 EE FC 11 DB 72 ED B8 01 ?? ?? ?? 01 DB ?? ?? ?? }
        $b = { 6A ?? 60 E9 01 01 }
    condition:
        for any of ($*) : ( $ at pe.entry_point )

}

rule EP_v20_additional: PEiD
{
    strings:
        $a = { 6A ?? 60 E9 01 01 }
    condition:
        $a at pe.entry_point

}

rule EXPL_SUSP_JS_Exploitation_Payloads_Dec25 {
   meta:
      description = "Detects RCE indicators related to the exploitation attempts of the React Server Remote Code Execution Vulnerability (CVE-2025-55182) as observed in the wild"
      author = "Florian Roth"
      reference = "https://www.greynoise.io/blog/cve-2025-55182-react2shell-opportunistic-exploitation-in-the-wild-what-the-greynoise-observation-grid-is-seeing-so-far"
      date = "2025-12-06"
      score = 70
      id = "91220a9b-bb97-5fdf-b14d-fac36d6bed3a"
   strings:
      $a1 = "process.mainModule.require('child_process')"

      $x1 = ".execSync('powershell -enc SQBFAFgAIAA"

      $sa1 = ".execSync('powershell"
      $sa2 = ".execSync('curl "
      $sa3 = ".execSync('wget "

      $sb01 = " -e "
      $sb02 = " -ec "
      $sb03 = " -en "
      $sb04 = " -enc "
      $sb05 = " -enco "
      $sb06 = " -encodedcommand "
      $sb07 = " | bash"
      $sb08 = " | sh"
      $sb09 = "|bash"
      $sb10 = "|sh"

      $sc1 = ").DownloadString(" ascii wide base64
      $sc2 = "IEX (New-Object " ascii wide base64
   condition:
      $a1
      and (
         1 of ($x*)
         or (
            1 of ($sa*)
            and 1 of ($sb*)
         )
         or 1 of ($sc*)
      )
}

rule EXPL_SUSP_JS_POC_RSC_Detector_Payloads_Dec25 {
   meta:
      description = "Detects RCE indicators related to the proof-of-concept code for the React Server Remote Code Execution Vulnerability (CVE-2025-55182) as used in the RSC Detector browser extension but could be used in other JavaScript based PoC code as well"
      author = "Florian Roth"
      reference = "https://github.com/mrknow001/RSC_Detector"
      date = "2025-12-06"
      score = 70
      id = "98887e97-2dd4-5777-9fab-02805035de14"
   strings:
      $s1 = "process.mainModule.require('child_process').execSync("
      $s2 = ").toString('base64');"

      // harmless test cases - we only want to match real command execution attempts
      $f1 = "echo vulnerability_test"
   condition:
      all of ($s*)
      and not 1 of ($f*)
}

rule E_: PEiD
{
    strings:
        $a = { 55 8B EC B8 ?? ?? ?? ?? BB ?? ?? ?? ?? 50 E8 00 00 00 00 58 2D A7 1A 00 00 B9 6C 1A 00 00 BA 20 1B 00 00 BE 00 10 00 00 BF B0 53 00 00 BD EC 1A 00 00 03 E8 81 75 00 ?? ?? ?? ?? 81 75 04 ?? ?? ?? ?? 81 75 08 ?? ?? ?? ?? 81 75 0C ?? ?? ?? ?? 81 75 10 }
        $b = { 55 8B EC B8 ?? ?? ?? ?? E8 ?? ?? ?? ?? 53 56 57 0F 31 8B D8 0F 31 8B D0 2B D3 C1 EA 10 B8 ?? ?? ?? ?? 0F 6E C0 B8 ?? ?? ?? ?? 0F 6E C8 0F F5 C1 0F 7E C0 0F 77 03 C2 ?? ?? ?? ?? ?? FF E0 }
    condition:
        for any of ($*) : ( $ at pe.entry_point )

}

rule E_Language_WuTao: PEiD
{
    strings:
        $a = { E8 06 00 00 00 50 E8 ?? 01 00 00 55 8B EC 81 C4 F0 FE FF FF }
    condition:
        $a at pe.entry_point

}

rule E_additional: PEiD
{
    strings:
        $a = { 55 8B EC B8 ?? ?? ?? ?? BB ?? ?? ?? ?? 50 E8 00 00 00 00 58 2D A7 1A 00 00 B9 6C 1A 00 00 BA 20 1B 00 00 BE 00 10 00 00 BF B0 53 00 00 BD EC 1A 00 00 03 E8 81 75 00 ?? ?? ?? ?? 81 75 04 ?? ?? ?? ?? 81 75 08 ?? ?? ?? ?? 81 75 0C ?? ?? ?? ?? 81 75 10 }
    condition:
        $a at pe.entry_point

}

rule E_language: PEiD
{
    strings:
        $a = { E8 06 00 00 00 50 E8 ?? 01 00 00 55 8B EC 81 C4 F0 FE FF FF }
    condition:
        $a at pe.entry_point

}

rule E_language_additional: PEiD
{
    strings:
        $a = { 0B D0 8B DA E8 02 00 00 00 40 A0 5A EB 01 9D B8 80 ?? ?? ?? EB 02 CD 20 03 D3 8D 35 F4 00 }
    condition:
        $a at pe.entry_point

}

rule FE_APT_9002
{
    
    meta:
        Author      = "FireEye Labs"
        Date        = "2013/11/10"
        Description = "Strings inside"
        Reference   = "Useful link"
        
    strings:
        $mz = { 4d 5a }
        $a = "rat_UnInstall" wide ascii

    condition:
        ($mz at 0) and $a
}

rule FE_APT_Backdoor_Linux32_SLOWPULSE_1 
{ 
    meta: 
        author = "Mandiant" 
        date = "2021-04-16"
        sha256 = "cd09ec795a8f4b6ced003500a44d810f49943514e2f92c81ab96c33e1c0fbd68"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"        
        id = "dd35257f-5b6f-55a6-a709-873ded1f4b72"
    strings: 
        $sb1 = {FC b9 [4] e8 00 00 00 00 5? 8d b? [4] 8b} 
        $sb2 = {f3 a6 0f 85 [4] b8 03 00 00 00 5? 5? 5?} 
        $sb3 = {9c 60 e8 00 00 00 00 5? 8d [5] 85 ?? 0f 8?} 
        $sb4 = {89 13 8b 51 04 89 53 04 8b 51 08 89 53 08} 
        $sb5 = {8d [5] b9 [4] f3 a6 0f 8?} 
    condition: 
        ((uint32(0) == 0x464c457f) and (uint8(4) == 1)) and all of them 
}

rule FE_APT_Backdoor_Linux32_SLOWPULSE_2
{ 
    meta: 
        author = "Strozfriedberg" 
        date = "2021-04-16"
        sha256 = "cd09ec795a8f4b6ced003500a44d810f49943514e2f92c81ab96c33e1c0fbd68"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"        
    strings: 
        $sig = /[\x20-\x7F]{16}([\x20-\x7F\x00]+)\x00.{1,32}\xE9.{3}\xFF\x00+[\x20-\x7F][\x20-\x7F\x00]{16}/ 

        // TOI_MAGIC_STRING 
        $exc1 = /\xED\xC3\x02\xE9\x98\x56\xE5\x0C/ 
    condition:
        uint32(0) == 0x464C457F and (1 of ($sig*)) and (not (1 of ($exc*)))
}

rule FE_APT_Trojan_Linux32_LOCKPICK_1
{
    meta:
        author = "Mandiant"
        date = "2021-04-16"
        hash = "e8bfd3f5a2806104316902bbe1195ee8"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
        id = "00c09378-25a0-55f1-8d93-7b22d98bd8c2"
    strings:
        $sb1 = { 83 ?? 63 0F 84 [4] 8B 45 ?? 83 ?? 01 89 ?? 24 89 44 24 04 E8 [4] 85 C0 }
        $sb2 = { 83 [2] 63 74 ?? 89 ?? 24 04 89 ?? 24 E8 [4] 83 [2] 01 85 C0 0F [5] EB 00 8B ?? 04 83 F8 02 7? ?? 83 E8 01 C1 E0 02 83 C0 00 89 44 24 08 8D 83 [4] 89 44 24 04 8B ?? 89 04 24 E8 }
    condition:
        ((uint32(0) == 0x464c457f) and (uint8(4) == 1)) and (@sb1[1] < @sb2[1])
}

rule FE_APT_Trojan_Linux32_PACEMAKER 
{ 
    meta: 
        author = "Mandiant"  
        date = "2021-04-16"   
        hash = "d7881c4de4d57828f7e1cab15687274b"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
        id = "459e26f1-4ea9-56dd-ad71-0ed2c7499aea"
    strings: 
        $s1 = "\x00/proc/%d/mem\x00" 
        $s2 = "\x00/proc/%s/maps\x00" 
        $s3 = "\x00/proc/%s/cmdline\x00" 
        $sb1 = { C7 44 24 08 10 00 00 00 C7 44 24 04 00 00 00 00 8D 45 E0 89 04 24 E8 [4] 8B 45 F4 83 C0 0B C7 44 24 08 10 00 00 00 89 44 24 04 8D 45 E0 89 04 24 E8 [4] 8D 45 E0 89 04 24 E8 [4] 85 C0 74 ?? 8D 45 E0 89 04 24 E8 [4] 85 C0 74 ?? 8D 45 E0 89 04 24 E8 [4] EB } 
        $sb2 = { 8B 95 [4] B8 [4] 8D 8D [4] 89 4C 24 10 8D 8D [4] 89 4C 24 0C 89 54 24 08 89 44 24 04 8D 85 [4] 89 04 24 E8 [4] C7 44 24 08 02 00 00 00 C7 44 24 04 00 00 00 00 8B 45 ?? 89 04 24 E8 [4] 89 45 ?? 8D 85 [4] 89 04 24 E8 [4] 89 44 24 08 8D 85 [4] 89 44 24 04 8B 45 ?? 89 04 24 E8 [4] 8B 45 ?? 89 45 ?? C7 45 ?? 00 00 00 00 [0-16] 83 45 ?? 01 8B 45 ?? 3B 45 0C } 
    condition: 
        ((uint32(0) == 0x464c457f) and (uint8(4) == 1)) and all of them 
}

rule FE_APT_Trojan_Linux_PACEMAKER 
{ 
    meta: 
        author = "Mandiant"  
        date = "2021-04-16"     
        hash = "d7881c4de4d57828f7e1cab15687274b"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
        id = "5a20260a-5389-57da-956c-97063fed5015"
    strings: 
        $s1 = "\x00Name:%s || Pwd:%s || AuthNum:%s\x0a\x00" 
        $s2 = "\x00/proc/%d/mem\x00" 
        $s3 = "\x00/proc/%s/maps\x00" 
        $s4 = "\x00/proc/%s/cmdline\x00" 
    condition: 
        (uint32(0) == 0x464c457f) and all of them 
}

rule FE_APT_Trojan_PL_PULSEJUMP_1
{
    meta:
        author = "Mandiant"
        date = "2021-04-16"
        hash = "91ee23ee24e100ba4a943bb4c15adb4c"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
        id = "690cc347-e60f-5cac-b65d-367ecee69251"
    strings:
        $s1 = "open("
        $s2 = ">>/tmp/"
        $s3 = "syswrite("
        $s4 = /\}

rule FE_APT_Trojan_PL_RADIALPULSE_1 
{
    meta: 
        author = "Mandiant" 
        date = "2021-04-16"       
        sha256 = "d72daafedf41d484f7f9816f7f076a9249a6808f1899649b7daa22c0447bb37b"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"        
        id = "1fab6d2f-96e8-5def-a93e-2bddd04e7ec8"
    strings: 
        $s1 = "->getRealmInfo()->{name}" 
        $s2 = /open\(\*fd,[\x09\x20]{0,32}[\x22\x27]>>/ 
        $s3 = /syswrite\(\*fd,[\x09\x20]{0,32}[\x22\x27]realm=\$/ 
        $s4 = /syswrite\(\*fd,[\x09\x20]{0,32}[\x22\x27]username=\$/ 
        $s5 = /syswrite\(\*fd,[\x09\x20]{0,32}[\x22\x27]password=\$/ 
    condition: 
        (@s1[1] < @s2[1]) and (@s2[1] < @s3[1]) and $s4 and $s5 
}

rule FE_APT_Trojan_PL_RADIALPULSE_2 
{ 
    meta: 
        author = "Mandiant"  
        date = "2021-04-16"       
        hash = "4a2a7cbc1c8855199a27a7a7b51d0117"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
        id = "dc941935-aec7-54b6-a278-f1453b9785df"
    strings: 
        $s1 = "open(*fd," 
        $s2 = "syswrite(*fd," 
        $s3 = "close(*fd);" 
        $s4 = /open\(\*fd,[\x09\x20]{0,32}[\x22\x27]>>\/tmp\/[\w.]{1,128}[\x22\x27]\);[\x09\x20]{0,32}syswrite\(\*fd,[\x09\x20]{0,32}/ 
        $s5 = /syswrite\(\*fd,[\x09\x20]{0,32}[\x22\x27][\w]{1,128}=\$\w{1,128} ?[\x22\x27],[\x09\x20]{0,32}5000\)/ 
    condition: 
        all of them 
}

rule FE_APT_Trojan_PL_RADIALPULSE_3 
{ 
    meta: 
        author = "Mandiant"  
        date = "2021-04-16"  
        hash = "4a2a7cbc1c8855199a27a7a7b51d0117"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
        id = "8a597521-c873-5bcc-85e6-5a0a061fffb7"
    strings: 
        $s1 = "open(*fd," 
        $s2 = "syswrite(*fd," 
        $s3 = "close(*fd);" 
        $s4 = /open\(\*fd,[\x09\x20]{0,32}[\x22\x27]>>\/tmp\/dsstartssh\.statementcounters[\x22\x27]\);[\x09\x20]{0,32}syswrite\(\*fd,[\x09\x20]{0,32}/ 
        $s5 = /syswrite\(\*fd,[\x09\x20]{0,32}[\x22\x27][\w]{1,128}=\$username ?[\x22\x27],[\x09\x20]{0,32}\d{4}\)/ 
    condition: 
        all of them 
}

rule FE_APT_Webshell_PL_PULSECHECK_1 
{ 
    meta: 
        author = "Mandiant" 
        date = "2021-04-16"  
        sha256 = "a1dcdf62aafc36dd8cf64774dea80d79fb4e24ba2a82adf4d944d9186acd1cc1"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
        id = "f375fdd8-567b-569b-85f4-af54a35d2a93"
    strings: 
        $r1 = /while[\x09\x20]{0,32}\(<\w{1,64}>\)[\x09\x20]{0,32}\{\s{1,256}\$\w{1,64}[\x09\x20]{0,32}\.=[\x09\x20]{0,32}\$_;\s{0,256}\}/ 
        $s1 = "use Crypt::RC4;" 
        $s2 = "use MIME::Base64" 
        $s3 = "MIME::Base64::decode(" 
        $s4 = "popen(" 
        $s5 = " .= $_;" 
        $s6 = "print MIME::Base64::encode(RC4(" 
        $s7 = "HTTP_X_" 
    condition: 
        $s1 and $s2 and (@s3[1] < @s4[1]) and (@s4[1] < @s5[1]) and (@s5[1] < @s6[1]) and (#s7 > 2) and $r1 
}

rule FE_APT_Webshell_PL_STEADYPULSE_1
{  
    meta:  
        author = "Mandiant"  
        date = "2021-04-16"      
        sha256 = "168976797d5af7071df257e91fcc31ce1d6e59c72ca9e2f50c8b5b3177ad83cc"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"     
        id = "49457fbb-9288-565f-909d-e8228c21c1e4"
    strings:  
        $s1 = "parse_parameters" 
        $s2 = "s/\\+/ /g"  
        $s3 = "s/%(..)/pack("  
        $s4 = "MIME::Base64::encode($"  
        $s5 = "$|=1;" 
        $s6 = "RC4(" 
        $s7 = "$FORM{'cmd'}" 
    condition:  
        all of them  
}

rule FE_CPE_MS17_010_RANSOMWARE {
meta:version="1.1"
      //filetype="PE"
      author="[email protected] @TekDefense, [email protected] @ItsReallyNick"
      date="2017-06-27"
      description="Probable PETYA ransomware using ETERNALBLUE, WMIC, PsExec"
      reference = "https://www.fireeye.com/blog/threat-research/2017/06/petya-ransomware-spreading-via-eternalblue-exploit.html"
strings:
      // DRIVE USAGE
      $dmap01 = "\\\\.\\PhysicalDrive" nocase ascii wide
      $dmap02 = "\\\\.\\PhysicalDrive0" nocase ascii wide
      $dmap03 = "\\\\.\\C:" nocase ascii wide
      $dmap04 = "TERMSRV" nocase ascii wide
      $dmap05 = "\\admin$" nocase ascii wide
      $dmap06 = "GetLogicalDrives" nocase ascii wide
      $dmap07 = "GetDriveTypeW" nocase ascii wide

      // RANSOMNOTE
      $msg01 = "WARNING: DO NOT TURN OFF YOUR PC!" nocase ascii wide
      $msg02 = "IF YOU ABORT THIS PROCESS" nocase ascii wide
      $msg03 = "DESTROY ALL OF YOUR DATA!" nocase ascii wide
      $msg04 = "PLEASE ENSURE THAT YOUR POWER CABLE IS PLUGGED" nocase ascii wide
      $msg05 = "your important files are encrypted" ascii wide
      $msg06 = "Your personal installation key" nocase ascii wide
      $msg07 = "worth of Bitcoin to following address" nocase ascii wide
      $msg08 = "CHKDSK is repairing sector" nocase ascii wide
      $msg09 = "Repairing file system on " nocase ascii wide
      $msg10 = "Bitcoin wallet ID" nocase ascii wide
      $msg11 = "[email protected]" nocase ascii wide
      $msg12 = "1Mz7153HMuxXTuR2R1t78mGSdzaAtNbBWX" nocase ascii wide
      $msg_pcre = /(en|de)crypt(ion|ed\.)/     

      // FUNCTIONALITY, APIS
      $functions01 = "need dictionary" nocase ascii wide
      $functions02 = "comspec" nocase ascii wide
      $functions03 = "OpenProcessToken" nocase ascii wide
      $functions04 = "CloseHandle" nocase ascii wide
      $functions05 = "EnterCriticalSection" nocase ascii wide
      $functions06 = "ExitProcess" nocase ascii wide
      $functions07 = "GetCurrentProcess" nocase ascii wide
      $functions08 = "GetProcAddress" nocase ascii wide
      $functions09 = "LeaveCriticalSection" nocase ascii wide
      $functions10 = "MultiByteToWideChar" nocase ascii wide
      $functions11 = "WideCharToMultiByte" nocase ascii wide
      $functions12 = "WriteFile" nocase ascii wide
      $functions13 = "CoTaskMemFree" nocase ascii wide
      $functions14 = "NamedPipe" nocase ascii wide
      $functions15 = "Sleep" nocase ascii wide // imported, not in strings     

      // COMMANDS
      //  -- Clearing event logs & USNJrnl
      $cmd01 = "wevtutil cl Setup" ascii wide nocase
      $cmd02 = "wevtutil cl System" ascii wide nocase
      $cmd03 = "wevtutil cl Security" ascii wide nocase
      $cmd04 = "wevtutil cl Application" ascii wide nocase
      $cmd05 = "fsutil usn deletejournal" ascii wide nocase
      // -- Scheduled task
      $cmd06 = "schtasks " nocase ascii wide
      $cmd07 = "/Create /SC " nocase ascii wide
      $cmd08 = " /TN " nocase ascii wide
      $cmd09 = "at %02d:%02d %ws" nocase ascii wide
      $cmd10 = "shutdown.exe /r /f" nocase ascii wide
      // -- Sysinternals/PsExec and WMIC
      $cmd11 = "-accepteula -s" nocase ascii wide
      $cmd12 = "wmic"
      $cmd13 = "/node:" nocase ascii wide
      $cmd14 = "process call create" nocase ascii wide

condition:
      // (uint16(0) == 0x5A4D)
      3 of ($dmap*)
      and 2 of ($msg*)
      and 9 of ($functions*)
      and 7 of ($cmd*)
}

rule FE_LEGALSTRIKE_MACRO {
   meta:
      version=".1"
      filetype="MACRO"
      author="[email protected] @TekDefense - modified by Florian Roth"
      date="2017-06-02"
      description="This rule is designed to identify macros with the specific encoding used in the sample 30f149479c02b741e897cdb9ecd22da7."
      id = "eb15e5aa-16e5-5c07-a293-ad15c0c09d8e"
   strings:
      // OBSFUCATION
      $ob1 = "ChrW(114) & ChrW(101) & ChrW(103) & ChrW(115) & ChrW(118) & ChrW(114) & ChrW(51) & ChrW(50) & ChrW(46) & ChrW(101)" ascii wide
      // wscript
      $wsobj1 = "Set Obj = CreateObject(\"WScript.Shell\")" ascii wide
      $wsobj2 = "Obj.Run " ascii wide
   condition:
      all of them
}

rule FE_LEGALSTRIKE_MACRO {
       meta:version=".1"
       filetype="MACRO"
       author="[email protected] @TekDefense"
       date="2017-06-02"
       description="This rule is designed to identify macros with the specific encoding used in the sample 30f149479c02b741e897cdb9ecd22da7."
strings:
       // OBSFUCATION
       $ob1 = "ChrW(114) & ChrW(101) & ChrW(103) & ChrW(115) & ChrW(118) & ChrW(114) & ChrW(51) & ChrW(50) & ChrW(46) & ChrW(101)" ascii wide
       $ob2 = "ChrW(120) & ChrW(101) & ChrW(32) & ChrW(47) & ChrW(115) & ChrW(32) & ChrW(47) & ChrW(110) & ChrW(32) & ChrW(47)" ascii wide
       $ob3 = "ChrW(117) & ChrW(32) & ChrW(47) & ChrW(105) & ChrW(58) & ChrW(104) & ChrW(116) & ChrW(116) & ChrW(112) & ChrW(115)" ascii wide
       $ob4 = "ChrW(58) & ChrW(47) & ChrW(47) & ChrW(108) & ChrW(121) & ChrW(110) & ChrW(99) & ChrW(100) & ChrW(105) & ChrW(115)" ascii wide
       $ob5 = "ChrW(99) & ChrW(111) & ChrW(118) & ChrW(101) & ChrW(114) & ChrW(46) & ChrW(50) & ChrW(98) & ChrW(117) & ChrW(110)" ascii wide
       $ob6 = "ChrW(110) & ChrW(121) & ChrW(46) & ChrW(99) & ChrW(111) & ChrW(109) & ChrW(47) & ChrW(65) & ChrW(117) & ChrW(116)" ascii wide
       $ob7 = "ChrW(111) & ChrW(100) & ChrW(105) & ChrW(115) & ChrW(99) & ChrW(111) & ChrW(118) & ChrW(101) & ChrW(114) & ChrW(32)" ascii wide
       $ob8 = "ChrW(115) & ChrW(99) & ChrW(114) & ChrW(111) & ChrW(98) & ChrW(106) & ChrW(46) & ChrW(100) & ChrW(108) & ChrW(108)" ascii wide
       $obreg1 = /(\w{5}\s&\s){7}\w{5}/
       $obreg2 = /(Chrw\(\d{1,3}\)\s&\s){7}/
       // wscript
       $wsobj1 = "Set Obj = CreateObject(\"WScript.Shell\")" ascii wide
       $wsobj2 = "Obj.Run " ascii wide

condition:
        (
              (
                      (uint16(0) != 0x5A4D)
              )
              and
              (
                      all of ($wsobj*) and 3 of ($ob*)
                      or
                      all of ($wsobj*) and all of ($obreg*)
              )
       )
}

rule FE_LEGALSTRIKE_RTF {
   meta:
      version=".1"
      filetype="MACRO"
      author="joshua.kim@FireEye. - modified by Florian Roth"
      date="2017-06-02"
      description="Rtf Phishing Campaign leveraging the CVE 2017-0199 exploit, to point to the domain 2bunnyDOTcom"
      id = "b62ceffa-445f-517e-b86b-56e47876c6c0"
   strings:
      $lnkinfo = "4c0069006e006b0049006e0066006f"
      $encoded1 = "4f4c45324c696e6b"
      $encoded2 = "52006f006f007400200045006e007400720079"
      $encoded3 = "4f0062006a0049006e0066006f"
      $encoded4 = "4f006c0065"
      $datastore = "\\*\\datastore"
   condition:
      uint32be(0) == 0x7B5C7274 and all of them
}

rule FE_LEGALSTRIKE_RTF {
    meta:
        version=".1"
        filetype="MACRO"
        author="[email protected]"
        date="2017-06-02"
        description="Rtf Phishing Campaign leveraging the CVE 2017-0199 exploit, to point to the domain 2bunnyDOTcom"

    strings:
        $header = "{\\rt"

        $lnkinfo = "4c0069006e006b0049006e0066006f"

        $encoded1 = "4f4c45324c696e6b"
        $encoded2 = "52006f006f007400200045006e007400720079"
        $encoded3 = "4f0062006a0049006e0066006f"
        $encoded4 = "4f006c0065"

        $http1 = "68{"
        $http2 = "74{"
        $http3 = "07{"

        // 2bunny.com
        $domain1 = "32{\\"
        $domain2 = "62{\\"
        $domain3 = "75{\\"
        $domain4 = "6e{\\"
        $domain5 = "79{\\"
        $domain6 = "2e{\\"
        $domain7 = "63{\\"
        $domain8 = "6f{\\"
        $domain9 = "6d{\\"

        $datastore = "\\*\\datastore"

    condition:
        $header at 0 and all of them
}

rule FE_PCAPs
{
meta:
	author = "@abhinavbom"
	maltype = "NA"
	version = "0.1"
	description = "All pcaps uploaded to VT"
	date = "29/07/2015"
strings:
	$magic = {D4 C3 B2 A1}
condition:
	$magic at 0
}

rule FE_Trojan_SH_ATRIUM_1
{
    meta:
        author = "Mandiant"
        date = "2021-04-16"
        hash = "a631b7a8a11e6df3fccb21f4d34dbd8a"
        description = "Detects samples mentioned in PulseSecure report"
        reference = "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
        id = "c49441f4-a138-534c-a858-a7462ed865c9"
    strings:
        $s1 = "CGI::param("
        $s2 = "Cache-Control: no-cache"
        $s3 = "system("
        $s4 = /sed -i [^\r\n]{1,128}CGI::param\([^\r\n]{1,128}print[\x20\x09]{1,32}[^\r\n]{1,128}Cache-Control: no-cache[^\r\n]{1,128}print[\x20\x09]{1,32}[^\r\n]{1,128}Content-type: text\/html[^\r\n]{1,128}my [^\r\n]{1,128}=[\x09\x20]{0,32}CGI::param\([^\r\n]{1,128}system\(/
    condition:
        all of them
}

rule F_Xlock_116: PEiD
{
    strings:
        $a = { 50 50 50 53 51 52 56 1E 8B DC 8C D8 05 00 00 36 89 47 0E 36 C7 47 0C 00 00 8E 1E 2C 00 33 DB 8B 07 43 3D 00 00 74 02 75 F6 43 83 3F 01 75 45 43 43 8B D3 B8 00 3D CD 21 72 3A 8B D8 0E 1F 33 D2 8B F2 B9 1B 00 B4 3F CD 21 83 7C 14 00 75 30 81 }
    condition:
        $a at pe.entry_point

}

rule GH_PM32 {
    meta:
        author = "Jaume Martin"
    condition:
        hash.md5(0, filesize) == "2f2c5b3f3b1f97908074f526ac90a28d"
}

rule GH_PM64 {
    meta:
        author = "Jaume Martin"
    condition:
        hash.md5(0, filesize) == "fe6c0097412b2c7b7f4b8a489004dd14"
}

rule GP_Install_v50332: PEiD
{
    strings:
        $a = { 55 8B EC 33 C9 51 51 51 51 51 51 51 53 56 57 B8 C4 1C 41 00 E8 6B 3E FF FF 33 C0 55 68 76 20 41 00 64 FF 30 64 89 20 BA A0 47 41 00 33 C0 E8 31 0A FF FF 33 D2 A1 A0 }
    condition:
        $a at pe.entry_point

}

rule GP_Install_v50332_additional: PEiD
{
    strings:
        $a = { 55 8B EC 33 C9 51 51 51 51 51 51 51 53 56 57 B8 C4 1C 41 00 E8 6B 3E FF FF 33 C0 55 68 76 20 41 00 64 FF 30 64 89 20 BA A0 47 41 00 33 C0 E8 31 0A FF FF 33 D2 A1 A0 }
    condition:
        $a at pe.entry_point

}

rule GX_Protector_12_GurueXe: PEiD
{
    strings:
        $a = { 60 EB 05 E8 EB 04 40 00 EB FA E8 0A 00 00 00 }
    condition:
        $a at pe.entry_point

}

rule GX_Protector_12_GurueXe_additional: PEiD
{
    strings:
        $a = { 60 EB 05 E8 EB 04 40 00 EB FA E8 0A 00 00 00 }
    condition:
        $a at pe.entry_point

}

rule HA_Archive: PEiD
{
    strings:
        $a = { 48 41 }
    condition:
        $a at pe.entry_point

}

rule HA_Archive_Hint_FILE_START: PEiD
{
    strings:
        $a = { 48 41 }
    condition:
        $a at pe.entry_point

}

rule HKTL_CN_Dos_GetPass {
	meta:
		description = "Chinese Hacktool Set - file GetPass.exe"
		license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
		author = "Florian Roth (Nextron Systems)"
		reference = "http://tools.zjqhr.com/"
		date = "2015-06-13"
		modified = "2023-01-06"
		old_rule_name = "Dos_GetPass"
		hash = "d18d952b24110b83abd17e042f9deee679de6a1a"
		id = "08635096-474c-5fdf-825e-6c7c8c8d4061"
	strings:
		$s0 = "GetLogonS" ascii
		$s3 = "/showthread.php?t=156643" ascii
		$s8 = "To Run As Administ" ascii
		$s18 = "EnableDebugPrivileg" fullword ascii
		$s19 = "sedebugnameValue" fullword ascii
	condition:
		uint16(0) == 0x5a4d and filesize < 890KB and all of them
}

rule HKTL_CN_Dos_sys {
	meta:
		description = "Chinese Hacktool Set - file sys.exe"
		license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
		author = "Florian Roth (Nextron Systems)"
		reference = "http://tools.zjqhr.com/"
		date = "2015-06-13"
		modified = "2023-01-06"
		old_rule_name = "Dos_sys"
		hash = "b5837047443f8bc62284a0045982aaae8bab6f18"
		id = "c4b740f2-f4f8-59ff-ad1f-c06718040b50"
	strings:
		$s0 = "'SeDebugPrivilegeOpen " fullword ascii
		$s6 = "Author: Cyg07*2" fullword ascii
		$s12 = "from golds7n[LAG]'J" fullword ascii
		$s14 = "DAMAGE" fullword ascii
	condition:
		uint16(0) == 0x5a4d and filesize < 150KB and all of them
}

rule HKTL_CN_ProcHook_May19_1 {
   meta:
      description = "Detects hacktool used by Chinese threat groups"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://www.guardicore.com/2019/05/nansh0u-campaign-hackers-arsenal-grows-stronger/"
      date = "2019-05-31"
      hash1 = "02ebdc1ff6075c15a44711ccd88be9d6d1b47607fea17bef7e5e17f8da35293e"
      id = "ae4e2613-8254-5ea6-af88-2f08ebe4da33"
   condition:
      uint16(0) == 0x5a4d and filesize < 300KB and
      pe.imphash() == "343d580dd50ee724746a5c28f752b709"
}