Nahidul Kibria

Co-Leader, OWASP Bangladesh Chapter,Principal Software Engineer, Orbitax Bangladesh Ltd.

Writing code for fun and food. Security enthusiastic.

Twitter:@nahidupa

About OWASPOWASP’s mission is “to make application security visible, so

that people and organizations can make informed decisions about true application”

Attacker not use black art to exploit your application

www.owasp.org

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Bangladesh Chapter

Financial Malware: ZeuS zombies are using in online banking theft.

Process of login your banking account getting more and more complicated.

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Extra pin code

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Show picture in login window

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All of this is to save you …

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ZeuS and Spy Eye

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Zeus modify Bank financial statement

ZombiesIn computer science, a zombie is

a computer connected to the Internet that has been compromised.

Zombies are part of botnet

What Is a Botnet?

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What Does a Botnet Do?

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First Generation

Internet Relay Chat (IRC) Protocol

Second Generation

Peer-to-Peer (P2P) Protocol

Third Generation

Hyper Text Transfer Protocol (HTTP)

Hybrid

Mix of characteristics of different generations

of botnets

Botnet evolution

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So how ZeuS bypass your in

placed security mechanism?

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Classical defense does not

work

How financial malware bypass anti virus ?

Lets look at how most of anti virus work.

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Match the signature

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Zeus variant

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It’s take time to analyze new binary

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Two-factor authentication

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We move to pin code generator device

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Bypasses two-factor authentication

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Evil VS Good

Bot Spreading Mechanisms

• Browser Exploit Packs

• Drive-by-Download frameworks

• Spreaders

• USB Spreading

• Install-by-Install

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Top 10 Web Threats

Prevalence Chart Q3 2012

Propagations tactics

Facebook update scam leading to Zeus Trojan

Bogus SEO result for ‘MailMarshal

Exploiting Web Hosting

Several websites are hosted on a single server sharing IP address

– DNS names are mapped virtually to the same IP

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Exploitation

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Exploiting Browsers/HTTP

– Man in the Browser

– Form grabbing

– Web Injects

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Exploit Kit(s)

Lifecycle of a vulnerability

Symantec's chart shows a distribution of zero-day exploits based on how long they persist

before being discovered. The average is close to 10 months.

Persistence and hiding activity

Files and Directories

Processes

Registry Keys

Services

TCP/UPD ports

Communication hiding (• Covert Channels)

Technical name is rootkit

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File hiding

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Hiding the network traffic

Cryptography - Make message unreadable

Stegonography - Hide the message in another message

Metaferography - Hide the message in the carrier

Easy to design, hard to detect

Covert Channels

• Clever measure of network protocols

• Nearly undetectable

“They’ll never see me coming!”

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So malware can become FUD (Fully undetected )

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Now you may think!!!

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Mule Recruiting• “Work From Home” scam

• Person is told they are working in a customer service

or billing position

• Person uses their personal checking account to

receive funds

• And after they do the wire transfer and are burned…

• …their identity is sold on the black market and they

get burned a second time

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I’m Copying images from Google search

thanks all.

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