Opcleaver.yar

/*
    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.

*/

import "pe"


rule OPCLEAVER_BackDoorLogger
{
	meta:
		description = "Keylogger used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "BackDoorLogger"
		$s2 = "zhuAddress"
	condition:
		all of them
}

rule OPCLEAVER_Jasus
{
	meta:
		description = "ARP cache poisoner used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "pcap_dump_open"
		$s2 = "Resolving IPs to poison..."
		$s3 = "WARNNING: Gateway IP can not be found"
	condition:
		all of them
}

rule OPCLEAVER_LoggerModule
{
	meta:
		description = "Keylogger used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "%s-%02d%02d%02d%02d%02d.r"
		$s2 = "C:\\Users\\%s\\AppData\\Cookies\\"
	condition:
		all of them
}

rule OPCLEAVER_NetC
{
	meta:
		description = "Net Crawler used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "NetC.exe" wide
		$s2 = "Net Service"
	condition:
		all of them
}

rule OPCLEAVER_ShellCreator2
{
	meta:
		description = "Shell Creator used by attackers in Operation Cleaver to create ASPX web shells"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "ShellCreator2.Properties"
		$s2 = "set_IV"
	condition:
		all of them
}

rule OPCLEAVER_SmartCopy2
{
	meta:
		description = "Malware or hack tool used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "SmartCopy2.Properties"
		$s2 = "ZhuFrameWork"
	condition:
		all of them
}

rule OPCLEAVER_SynFlooder
{
	meta:
		description = "Malware or hack tool used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "Unable to resolve [ %s ]. ErrorCode %d"
		$s2 = "your target’s IP is : %s"
		$s3 = "Raw TCP Socket Created successfully."
	condition:
		all of them
}

rule OPCLEAVER_TinyZBot
{
	meta:
		description = "Tiny Bot used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "NetScp" wide
		$s2 = "TinyZBot.Properties.Resources.resources"
		$s3 = "Aoao WaterMark"
		$s4 = "Run_a_exe"
		$s5 = "netscp.exe"
		$s6 = "get_MainModule_WebReference_DefaultWS"
		$s7 = "remove_CheckFileMD5Completed"
		$s8 = "http://tempuri.org/"
		$s9 = "Zhoupin_Cleaver"
	condition:
		(($s1 and $s2) or ($s3 and $s4 and $s5) or ($s6 and $s7 and $s8) or $s9)
}

rule OPCLEAVER_ZhoupinExploitCrew
{
	meta:
		description = "Keywords used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "zhoupin exploit crew" nocase
		$s2 = "zhopin exploit crew" nocase
	condition:
		1 of them
}

rule OPCLEAVER_antivirusdetector
{
	meta:
		description = "Hack tool used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "getShadyProcess"
		$s2 = "getSystemAntiviruses"
		$s3 = "AntiVirusDetector"
	condition:
		all of them
}

rule OPCLEAVER_csext
{
	meta:
		description = "Backdoor used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "COM+ System Extentions"
		$s2 = "csext.exe"
		$s3 = "COM_Extentions_bin"
	condition:
		all of them
}

rule OPCLEAVER_kagent
{
	meta:
		description = "Backdoor used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "kill command is in last machine, going back"
		$s2 = "message data length in B64: %d Bytes"
	condition:
		all of them
}

rule OPCLEAVER_mimikatzWrapper
{
	meta:
		description = "Mimikatz Wrapper used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "mimikatzWrapper"
		$s2 = "get_mimikatz"
	condition:
		all of them
}

rule OPCLEAVER_pvz_in
{
	meta:
		description = "Parviz tool used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "LAST_TIME=00/00/0000:00:00PM$"
		$s2 = "if %%ERRORLEVEL%% == 1 GOTO line"
	condition:
		all of them
}

rule OPCLEAVER_pvz_out
{
	meta:
		description = "Parviz tool used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "Network Connectivity Module" wide
		$s2 = "OSPPSVC" wide
	condition:
		all of them
}

rule OPCLEAVER_wndTest
{
	meta:
		description = "Backdoor used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "[Alt]" wide
		$s2 = "<< %s >>:" wide
		$s3 = "Content-Disposition: inline; comp=%s; account=%s; product=%d;"
	condition:
		all of them
}

rule OPCLEAVER_zhCat
{
	meta:
		description = "Network tool used by Iranian hackers and used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "Mozilla/4.0 ( compatible; MSIE 7.0; AOL 8.0 )" ascii fullword
		$s2 = "ABC ( A Big Company )" wide fullword
	condition:
		all of them
}

rule OPCLEAVER_zhLookUp
{
	meta:
		description = "Hack tool used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "zhLookUp.Properties"
	condition:
		all of them
}

rule OPCLEAVER_zhmimikatz
{
	meta:
		description = "Mimikatz wrapper used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
		score = "70"
	strings:
		$s1 = "MimikatzRunner"
		$s2 = "zhmimikatz"
	condition:
		all of them
}

rule OPCLEAVER_Parviz_Developer
{
	meta:
		description = "Parviz developer known from Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Florian Roth"
		score = "70"
	strings:
		$s1 = "Users\\parviz\\documents\\" nocase
	condition:
		$s1 
}

rule OPCLEAVER_CCProxy_Config
{
	meta:
		description = "CCProxy config known from Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Florian Roth"
		score = "70"
	strings:
		$s1 = "UserName=User-001" fullword ascii
		$s2 = "Web=1" fullword ascii
		$s3 = "Mail=1" fullword ascii
		$s4 = "FTP=0" fullword ascii
		$x1 = "IPAddressLow=78.109.194.114" fullword ascii
	condition:
		all of ($s*) or $x1 
}