Threat Intelligence Field of Dreams

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BuildingaThreatIntelligenceFieldofDreams

05.12.2016

CompanyConfidential

James CarderCISO | VP LogRhythm Labs

Greg FossGlobal Security Operations

Team Lead

OperationalizingThreatIntelligenceMakingThreatIntelligenceUseful

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DefiningThreatIntelligence

“Evidence-basedknowledge,includingcontext,mechanisms,indicators,implicationsandACTIONABLEadviceaboutanexistingoremergingmenaceorhazardtoassetsthatcanbeusedtoinformdecisionsregardingthe

subject’sresponsetothatmenaceorhazard”- Gartner

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• Documents(e.g.,FBIflashreports)• Blogs,emails• RSSfeeds

• CSVandtextfiles• STIX• OpenIOC

• Malwaresamples• Packetcapture• Forensicartifacts(files,email)

Actionabledatatypes

IntelReports

IndicatorsofCompromise

RawDataTypes

• UserBehaviors• EndpointBehaviors• NetworkBehaviors

YourOwnData

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OperationalizingThreatIntelligence

IndicatorsofCompromise(IOC)areautomaticallysearched

Changestoexternalthreatenvironmentimmediatedetected

Providesanalystcontextaroundincident,event,threat,campaign• Historicalknowledgeaswelltochainrelatedattacks

Reconnaissance&Planning

InitialCompromise

Command&Control

LateralMovement

TargetAttainment

ExfiltrationCorruptionDisruption

OSINTOpenSourceIntelligenceGathering

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OpenSourceIntelligenceGathering

OpenSourceIntelligence(OSINT)inthesimplestoftermsislocating,andanalyzingpublically(open)availablesourcesofinformation.Thekeycomponenthereisthatthisintelligencegatheringprocesshasagoalofproducingcurrentandrelevantinformationthatisvaluabletoeitheranattackerorcompetitor.Forthemostpart,OSINTismorethansimplyperformingwebsearchesusingvarioussources.

- http://www.pentest-standard.org/index.php/PTES_Technical_Guidelines#OSINT

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OSINT

• OffensiveandDefensive• Manual– InDepthAnalysisofthetargetentityorindividual(s)• Automated– Highlevelanalysisofmetadata• Operationalize,Integrate,andAutomateOSINTanalysis FTW• Definegoals– whattoanalyze,why,how,outputs,etc.

• IndicatorsofCompromise• Datatofeedbackloopsintodefensivetools• Research

• Attribution• Actors,victims,servers,locations,samples,etc.

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OSINTOPSEC(Manual)

• OPSEC:OperationalSecurity• Thetargetcannotknowyourorganizationisactivelyinvestigatingthem…

• UseaUSB-bootableLinuximagesuchasTails– non-persistent• RunbothTORandaVPN(commercialorusecloudsystems)• VirtualPrivateServers(VPS)locatedinothercountries• Payforservicesusingbitcoinand/orpre-paidgiftcards• Regardlessofsolution– understandtheservice’sloggingpolicy,

checkforwarrantcanaries,andknowyourrights…

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WhyTORandVPN?

TOR!=VPN

TOR=Randomizer

VPN=Tunnel

Honestly…Notabigdealunlessyou’replanningtodoillegalthings– Whichyoushouldnotbedoinganyways...

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OSINTOPSEC(Automated– Corporate)

• RegisteraLinuxAmazonEC2box(freetier)withnoelasticIP• PurchaseaDyn DNSaccount– fordynamicDNSregistration• EstablishaPPTPVPNtunneltotheEC2system(s)• Performinvestigativeanalysisfromthesecloud-hostedsystems

and/orlocalboxeswithproperprecautionsinplace• ProxytrafficthroughanduseSSHportforwardingtoaccessservices

• Followingthecompletionoftheanalysis,rebootthesystem.• Bydefault,AWSwillassignanewIPunlessyouuseanelasticIP• ReconfigurethetunnelsandDNSasnecessary(automatethis)

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AutomatingOSINTandResponse

DomainTools

PassiveTotal

VirusTotal

CiscoAMPThreatGRID

Netflow /IDS

Firewalls

Proxy

Endpoint

SIEM

API SecOps Infrastructure

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ManualOSINTAnalysis

• Goal-Oriented• Definespecifictargetandunderstandthedatayouwishtoobtain

• Technical – Accounts,Servers,Services,Software,Integrations• Social – SocialMedia,Photography,WishLists,Email• Physical – Address,HomeIPAddress,Business,Footprint• Logical – Network,OperationalIntelligence,Where,When

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AFewOSINTTools

• Maltego• Transforms!

• PassiveTotal• ThreatIntelandMaltego API!

• DomainToolsIRIS• Whois History,Pivotoffofdatapoints(email,address,phone,etc.)

• Shodan• Thenetworksearchengine– everythingfromopenVNCservicestoC2’s

• Facebook/Linkedin /Spokeo /Pipl /etc.• CreatefakeaccountsanduseAPIintegrationstoautomatesearches

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OSINTTipsandTricks:ShortenedURL’s

Allyouneedis+

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OSINTTipsandTricks:ShortenedURL’s

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OSINTTipsandTricks:ResolveSkypeUsernametoIP

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OSINTTipsandTricks:ResolveSkypeUsernametoIP

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OSINTTipsandTricks:SourceCodeSearch

Nerdydata.com

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OSINTTipsandTricks:SourceCodeSearch

;-)

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Justscratchingthesurface…

CaseStudiesOperationalizationofThreatIntel

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CaseStudy:OperationalizingPOSIntelfromaThreatReport

ThreatReport

SIEM/AnalyticsEngine

Hits,Alarm,SmartResponse

NoHits,NoAlarm,SmartResponse

AutomatedSearchusingHostandNetworkIOCsand/or

BrutPOSbehavior inSIEMandonendpoint

POSNetwork

• Containment• Acquisition• Analysis• Confirmation• Remediation• Metrics/Reporting

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SIEM/AnalyticsEngine

Domainwasopenedinthelast7daysor

registeredbyknownbad…SmartResponse

Domainisreputableorcategorizedasgood

DNSnameisn’trecognizedorpartofknownmaliciousdomainlists…Smart

Response…checkDomainTools

• Containment• Acquisition• Analysis• Confirmation• Remediation• Metrics/Reporting

InternetBrowsing

Internet

CaseStudy:OperationalizingIntelusingThirdPartyIntegrations

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CaseStudy:OperationalizingIntelfromInternalBehaviors/Baselines

Assumecredentialsare

stolen

SIEM/AnalyticsEngine

Detect:Networktraffictovl.ff.avast.com &su.ff.avast.com

Detect: 128BitGUIDcba871fa-80c9-48bc-9836-

8df3a7f67145

Identify:Avast AV

SingleFactor

• Containment• Acquisition• Analysis• Confirmation• Remediation• Metrics/Reporting

SmartResponse:Does ITinventoryhaveanythingother thanMcAfeeorESET?Ifnot,SmartResponseintoIR

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MalwareSandboxe.g.Cuckoo

Historical CaseData

Analyste.g.Malware,Forensics

External Servicese.g.DomainTools,

VirusTotal

ThreatIntelligencee.g.ISACs,

ThreatFeeds,FlashReports

OfferServicestoyourfriendsCollect Intel&Collaborate Vulnerability Intelligence

Ifyoubuildit…theywillcome…

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Isattributionimportant?

• “Ifyouknowtheenemyandknowyourselfyouneednotfeartheresultsofahundredbattles”– SunTzu

• “Allwarfareisbasedondeception.Hence,whenweareabletoattackwemustseemunable,whenusingourforcewemustappearinactive,whenwearenearwemustmaketheenemybelievewearefaraway,whenwearefarawaywemustmakehimbelievewearenear”– SunTzu

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• Whodidit?• Whydidtheydoit?• Whatweretheyafter?• Couldwehavepreventedit?

• APT,China• China5yrplan,don’tknow• Researchdata,intellectual

property, Idon’tknow• No,notwithoutmore

budget

“Chinastoleit,specificallyanAPTgroupoutofAprovince.ThedatawasthentransferredtopersonB,locatedinprovinceC.ThenpersonBsentittopersonDinRussia.OnceinRussia,thestolendataendeduponpersonE’stable.”

Whatifattributionwasreal’ized?

DocumentBuggingandWebTracingTrackingpeopleofinterestandmappingouttheirdigitalfootprints

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HoneyTokensandDocumentBugging

Tracking file access, modification, exfiltration, etc…

• Use File Integrity Monitoring to track file interactions

• Any predefined item, instrumented to generate a unique log

• Strings, Drives, Directories, Hashes, ‘employees’

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File Integrity Monitoring – Built in to Windows Logging

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DocumentBugging– HowTo

• WebBug Background Information:

http://ha.ckers.org/webbug.html

• WebBug Server:

https://bitbucket.org/ethanr/webbugserver

• Bugged Files – Is Your Document Telling on You?

Daniel Crowley and Damon Smith (Chaos Communication Camp 2015)

https://www.youtube.com/watch?v=j5cjFul4ZIc

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DocumentTracking

Same tricks used by Marketing / Sales for years. Normally for tracking emails, clicks, downloads, etc.

Why loading external images within email is risky…

CompanyConfidentialhttps://github.com/gfoss/misc/tree/master/Bash/webbug

Documentscanbetrackedinthesamewayasemail/web

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IssueswithDocumentTracking

When a document is opened up offline, it is possible that information will be divulged about the tracking service itself. Be cognizant of this when bugging documents.

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IssueswithDocumentTracking

Visiting the site directly

Dead giveaway that something phishy is up…

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IssueswithDocumentTracking

You may even get your domain flagged

This can hinder your tracking ability

Ensure that you check regularly…

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Takingitastepfurther…• Honeybadger, Flash, Java, Client Side Code

If you are able to execute code on the endpoint, you can uncover the true location, regardless of proxy

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Nohelpincourt…

• Evidenceobtainedviawebbugs,tracing,orsimilarformsoftrackingmaynotbeadmissibleincourt,asthiscouldbeconsideredentrapment.• FBICase– OperationTorpedo• https://www.wired.com/2014/08/operation_torpedo/

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LegalitiesofDocumentBugging

• Isitspying?• Canyoureallygetintroublefortrackingyourownthings?• Allboilsdowntointent…verygreyarea.

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BuggedDocumentsInPractice

ReversePhishing

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Hewasevenkindenoughtocompletetheformandsenditback!

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BuggedDocuments– InPractice

CaptureTheFlag– LogRhythmChallenge.com

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InPractice

BuggingtheCTFinstructions…

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BuggedDocuments– InPractice

“Weneedyourslides9-monthsaheadoftimeforthisindustry-leadingcybersecurityevent”– RandomConference

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USBDrop– SecurityAwarenessCaseStudy

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BuildingaBelievableCampaign

USBHumanInterfaceDevice(HID)attacksaretooobvious.Adeadgiveawaythatthetargetjustcompromisedtheirsystem.+Expensive.

http://hakshop.myshopify.com/products/usb-rubber-ducky-deluxe?variant=353378649

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BuildingaBelievableCampaign

Userealisticfileswithsomewhatrealisticdata

Stagedapproachtotrackfileaccessandexploitation

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README.doc

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TrackingFileAccess

Buggeddocumentopenedwithinthecorporatenetwork?

Correlateaccesslogswithnetworkflowanalysistofindthevictim

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WhoOpenedTheFile?

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Competitive-Business-Analysis.xlsm

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PowerShellMacro

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PowerShellPrompt

PowerShellEmpire– Invoke-Prompt

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Step1– CompressPowerShellScript

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Step2– BuildtheMacroandInjectPowerShellScript

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Step3-CustomizetheMacro

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Step4- Profit

SendanemailwhentheMacroisrun…

Useabogusemail(unlikeIdidhere)– Iknow,Iknow.BadOpSec.

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Tools\calculator.exe

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Yep…Theyranit

“Nobody’sgoingtorunanexecutablefromsomerandomUSB”-- Greg

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Nowwehaveourfoothold…

Fortunatelytheydidn’trunthisasanadmin

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MacroAttackDetection

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MalwareBeaconing

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Conclusion

• DevelopingandleveragingactionableOSINTdatacanhelpoperationalizeThreatIntelligence

• DevelopacyclicalThreatIntelligenceecosystemandimplementautomatedresponses toknownthreats

• Takeproactivemeasuresbylayingtrapsandvariousflagsthatwillnotify theSOCtoanomalousactivity

• Useactivedefensetechniques tolearnmoreabouttheadversaryandattempttogainattribution

• Understandtheshortcomings ofattributionanddocumentbugging toavoidcommonpitfalls

• Communicateacrossvariousdepartmentsandcoordinatedefensiveefforts

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James [email protected]

CISO | VP LogRhythm Labs

Greg [email protected]

Global Security Operations Team Lead

Thank You!