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Fake ASIC Renewal Spam Delivers Malware to Australian Companies

The Australian Securities and Investment Commission (ASIC) is an independent government agency that is Australia's corporate, market and financial services regulator. ASIC provides several services including registration services for Australian companies. Opportunist Scammers taking advantage of the new year, leveraged...

Fake Power and Broadband Utility Bills serve Banking Trojans to Aussies

Authors: Dr. Fahim Abbasi, Nicholas Ramos, Rodel Mendrez and Gerald Carsula In our previous blog we highlighted how a group of scammers were targeting financial software customers by spamming out Microsoft Sharepoint URLs that lead the target to fake invoices...

VAT Return with a Vengeance

Authors: Dr. Fahim Abbasi, Gerald Carsula and Rodel Mendrez Scam Overview Her Majesty's Revenue & Customs (HMRC) is the UK department responsible for collecting taxes and other tax related services like VAT returns. On 6th September, 2017, scammers launched a...

Emotet lives another day using Fake O2 invoice notifications

Authors: Dr. Fahim Abbasi and Nicholas Ramos We witnessed a widespread phishing campaign targeting O2 customers, that surfaced on 18th August, 2017 and continued intermittently until 21st August, 2017. Telefonica UK Limited, trading as O2, is a major telco provider...

Malware Xeroing in on Cloud Accounting Customers

Authors: Dr. Fahim Abbasi and Rodel Mendrez We witnessed a sophisticated phishing campaign on 16th August 2017, targeting victims by sending spoofed phishing email messages appearing to come from Xero. Xero is a New Zealand-based software company that develops cloud-based...

Tale of the Two Payloads – TrickBot and Nitol

A couple of weeks ago, we observed the Necurs botnet distributing a new malware spam campaign with a payload combo that includes Trickbot and Nitol. Trickbot is a banking trojan that first appeared late last year targeting banks in Europe,...

Necurs Recurs

The Necurs botnet, which was responsible for millions of malicious spam messages last year, has recently been extremely active again. For the past three weeks it has spammed emails with a malicious PDF attachment that drops a word document with...

Understanding and Discovering Open Redirect Vulnerabilities

One of the most common and largely overlooked vulnerabilities by web developers is Open Redirect (also known as "Unvalidated Redirects and Forwards"). A website is vulnerable to Open Redirect when parameter values (the portion of URL after "?") in an...

How I Cracked a Keylogger and Ended Up in Someone's Inbox

It all started from a spam campaign. Figure 1 shows a campaign we picked up recently from our spam traps with a suspicious document file attachment. Notice how poor the English is; this shall serve as a sign of warning...

Malware Authors Adopt CEO Fraud Techniques

CEO Fraud scams, a type of Business Email Compromise (BEC), have gained popularity among scammers recently. These scams use the power of the CEO's name to try and elicit a response from a targeted employee of an organization. For more...

CEO Fraud Scams and How to Deal With Them at the Email Gateway

Email scams known as "CEO Fraud" are very common right now. They are a type of "Business Email Compromise" (BEC). There have been numerous recent cases reported in the media, and we too, are seeing many reports by our customers....

Suzy’s Phishing Season

Although most SWG-related blogs talk about exploit kits and malicious code, today we would like to discuss something else in the form of a phishing campaign we recently spotted. Phishing often receives less attention from the InfoSec industry because unlike...

Cryptowall and phishing delivered through JavaScript Attachments

While most emails with malicious attachments seem to be zipped Windows executables or exploited Microsoft Office documents, there are still some spammers using regular old JavaScript attachments to do their dirty work. Here are two recent examples. We recently noticed...

Deobfuscating Malicious Macros Using Python

Over the past few weeks, we've observed cybercriminals spamming users, particularly in the UK, using document files embedded with malicious macros masquerading as invoices. The attachment is either a Word or an Excel document file. Here are some examples incorporating...

Reflected File Download - A New Web Attack Vector

PLEASE NOTE: As promised, I've published a full white paper that is now available for download: White paper "Reflected File Download: A New Web Attack Vector" by Oren Hafif. On October 2014 as part of my talk at the Black...

Hacking a Reporter: UK Edition

Over the summer, a U.K. journalist asked the Trustwave SpiderLabs team to target her with an online attack. You might remember that we did the same in 2013 by setting our sites on a U.S.-based reporter. This scenario, however, would...

Powerpoint Vulnerability (CVE-2014-4114) used in Malicious Spam

Following last week’s announcement of a zero-day vulnerability for PowerPoint (CVE-2014-4114), we suspected it would not be too long before we saw this attack being used via email attachments. So when this email with a PowerPoint attachment appeared in our...

Stupid Spammer Tricks – Reversing Characters

Spammers engaged in phishing attacks constantly try to get their emails past spam filters. They try many different tactics, and these can include taking advantage of HTML coding characteristics. These HTML tricks can make the email look normal when rendered...

Analysis of a New Banking Trojan Spammed by Cutwail

The Cutwail spambot has a long history of sending spam with attached malicious files such as Zbot, Blackhole Exploit Kit and Cryptolocker. Another trick in Cutwail’s portfolio is to use links pointing to popular file hosting services. Over the past...

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