June 17, 2013 | Alberto Ortega

Urausy ransomware family, a quick internals overview

Ransomware is popular among bad actors. Reveton malware family (based on Citadel) made a difference last year, now it is loosing popularity in favor of Urausy, just another lock-screen ransomware. There are a plenty of them living in the wild, but in this post we are going to focus on Urausy.These malware families are being spread by using exploit…

May 23, 2013 | Jaime Blasco

Yara rules and network detection for Operation Hangover

Last week, our friends from Norman published a great report on a cyber espionage campaign named Operation Hangover. We have released some Yara rules to detect most of the payloads mentioned on the paper. You can download the rules from our Github space:On the other hand the Hangover attackers have been using several payloads with network capabilities to steal…

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May 5, 2013 | Jaime Blasco

New Internet Explorer zeroday was used in the DoL Watering Hole campaign

In our first analysis we reported that the exploited vulnerability was CVE-2012-4792 . Further analysis showed that the vulnerability exploited wasn’t CVE-2012-4792 but a new zeroday vulnerability affecting Internet Explorer 8 (CVE-2013-1347). It was confirmed by Microsoft that released a Security Advisory on Friday as well as FireEye.In addition we have…

May 1, 2013 | Jaime Blasco

U.S. Department of Labor website hacked and redirecting to malicious code

During the last few hours we have identified that one the U.S. Department of Labor website has been hacked and it is serving malicious code.Clarification:The website affected is the The Department of Labor (DOL) Site Exposure Matrices (SEM) Website “The Department of Labor (DOL) Site Exposure Matrices (SEM) Website is a repository…

April 29, 2013 | Eduardo De la Arada

UrlQuery Chrome Extension

UrlQuery is a service for detecting and analyzing web-based malware, claims its website, this service is very useful and provides a detailed report of the submitted webpage. We use these services a lot in the lab, so we’ve decided to make our lives easier by developing a simple context menu extension which automatically sends urls to the service.The…

April 16, 2013 | Jaime Blasco

How cybercriminals are exploiting Bitcoin and other virtual currencies

- What is Bitcoin?Bitcoin is an online decentralised virtual currency based on an open source, P2P protocol. Bitcoins can be transferred using a computer without relying on a financial institution.If you haven’t heard about Bitcoin I recommend you watch the following video:Both the Bitcoin creation and transfer is performed by computers called “miners…

March 21, 2013 | Jaime Blasco

New Sykipot developments

SummaryDuring the last few years, we have been publishing about a group of hackers who have focused on targeting DIB (Defence Industrial Base) and other government organizations:- Another Sykipot sample likely targeting US federal agencies- Are the Sykipot’s authors obsessed with next generation US drones?- Sykipot variant hijacks DOD and Windows smart cards-…

March 20, 2013 | Jaime Blasco

A theory on the South Korean attacks

During the day I’ve been thinking about what have just happened in South Korea.It is a very simple piece of code that overwrites the MBR (Master Boot Record) making the affected system unable to start after reboot.Other companies have published information about the wiper payloads but anyone is giving information about how the attackers gained…

March 20, 2013 | Jaime Blasco

Information about the South Korean banks and media systems attacks

As many of you would probably know several South Korean banks and media companies have been affected by an attack that has wiped several systems.It seems the South Korean security company Nshc has published more details on his Facebook PageBased on the samples we collected, the malware overwrites the MBR (Master Boot Record) of the system. After reboot…

March 14, 2013 | Jaime Blasco

Latest Adobe PDF exploit used to target Uyghur and Tibetan activists

Last month Adobe released a fix to patch a vulnerability that was being exploited in the wild. Kaspersky found that the 0day was being used by a very sophisthicated group to target different governments  using a malware called MiniDuke.Alienvault Labs have detected that a different group of attackers have been using this vulnerability to target non-governmental and…

February 20, 2013 | Jaime Blasco

Yara rules for APT1/Comment Crew malware arsenal

I’m sure all of you have heard about Mandiant’s APT1 report published yesterday. As many of you probably know we have been tracking and exposing this group for a long time as well as other individuals and companies in the security industry. A couple of examples are:http://labs.alienvault.com/labs/index.php/2012/win32coswid/…

February 13, 2013 | Jaime Blasco

Cyber espionage campaign against the Uyghur community, targeting MacOSX systems

During the last few days together with our colleagues from Kaspersky Lab we have been investigating a new strain of spearphishing mails sent to the Uyghur community. You can read their analysis here.The mails sent contain a Microsoft Office .doc file that exploits MS09-027 affecting Microsoft Office for Mac, this is the same…

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