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    Archive for the ‘Spam’ Category




    Online banking users in Europe and North America are experiencing the upsurge of DYRE, a malware family notorious for the multiple ways it steals data and its ties to parcel mule scams, among others. There has been a 125% increase of DYRE-related infections worldwide this quarter compared to the last, proving that cybercriminal interest in online banking has only continued to grow. Figure 1. DYRE-related infections (values are rounded off to the nearest thousand) Roughly 7 in 10 users infected during the ...

    Posted in Malware, Spam |



    Cybercriminals have been taking advantage of tax season for years. While we have seen tax seasons involving countries like Australia and the U.K., it appears that cybercriminals tend to heavily favor the use of Internal Revenue Service (IRS) scams, especially during the US tax season. Over the years, the attackers’ means may have evolved but their goal remains the same—to trick victims into giving out personal information or money. Our new research paper, A Profile of IRS Scammers: Behind Tax Fraud, takes an ...

    Posted in Malware, Spam | Comments Off on Behind Tax Fraud: A Profile of 3 IRS Scammers



    Recently, we’ve come across an interesting spam campaign aimed at French users. The campaign itself uses a well-crafted lure that is likely to catch the attention of its would-be victims. In addition, the malware used - the GootKit backdoor - contains several unusual technical characteristics. Both of these highlight how this campaign was quite well thought-out on the part of the attackers. Spam: Using the French Ministry of Justice This campaign starts with email in French that uses varying subject lines: Copy du jugement (translated ...

    Posted in Malware, Spam | 1 TrackBack »



    Early this year Microsoft reported an increase in macro-related threats being used to spread malware via spam. Similarly, we’ve been seeing a drastic increase in spammed emails with attached Microsoft Word documents and Microsoft Excel spreadsheets that come with embedded macros. Macros are a set of commands or code that are meant to help automate certain tasks, but recently the bad guys have yet again been utilizing this heavily to automate their malware-related tasks as well. Here are some recent blog ...

    Posted in Malware, Spam | 1 TrackBack »


    Mar23
    11:19 am (UTC-7)   |    by

    Recently I discussed how TorrentLocker spam was using email authentication for its spam runs. At the time, I suggested that these spam runs were using email authentication to gather information about victim networks and potentially improve the ability to evade spam filters. DomainKeys Identified Mail's (DKIM) own specification mentions the possibility of messages with from “trusted sources” and with a valid signature being whitelisted. Since then, we’ve received several replies that differ with our findings. One of these was Martijn Grooten at Virus Bulletin, who argued that ...

    Posted in Spam | TrackBacks (2) »


     

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