Tag: IOCs

“IMG_” Malspam Delivers Locky Ransomware. Appending The “.Lukitus” Extension.

I received this malspam sample on Tuesday (8/29/17) from a friend, so it’s already a couple days old. The subject line of the email starts with “IMG_” and ends with four numbers. As you can see from the image below, it doesn’t contain anything in the body. This is very similar to other ransomware distribution campaigns ...

“Roboto Condensed” Social Engineering Attack Targets Both Chrome and Firefox Users.

A couple days ago I found a dozen or so domains using a social engineering attack like that of the RELST and HoeflerText campaigns. This attack, which I call “Roboto Condensed” for reasons that will become obvious, targets both Chrome and Firefox users. Users are likely to be redirected to these social engineering domains via malvertising, hacked ...

The Seamless Campaign Isn’t Losing Any Steam

Some security researchers on Tuesday had noted that their requests for the Seamless gates were failing. However, if there was any noticeable stoppage, it certainly didn’t last very long. Shortly after hearing about this I started checking my logs for any exploit kit activity and, as usual, I found a detection for RIG EK from ...

Seamless Campaign Uses RIG EK to Drop Ramnit Trojan

Below is a partial and edited flowchart of the malvertising chain that I got during this infection: An edited image of the infection chain is shown below: You can see that the Ramnit sample seems to check for Internet connectivity before making DNS queries for ujndhe7382uryhf.com, which resolves to 46.173.214.170. Following the DNS resolutions is ...

Fobos Campaign Using RIG EK to Drop Bunitu Trojan

This campaign has been dubbed “Fobos” because the actors were using the registrant email address fobos@mail.ru. FireEye first published an article back in March 2017, that talked about Fobos in relation to RIG exploit kit called “Still Getting Served: A Look at Recent Malvertising Campaigns Involving Exploit Kits.” The article mentioned that they started tracking ...

Seamless Campaign Uses RIG EK to Drop Ramnit. Ramnit Drops AZORult.

I’m still seeing a lot of Seamless campaign out there. Let’s look at the HTTP requests and DNS queries from my most recent infection: We start out with the request for /usa, which redirects to /usa/ via a 301. /usa/ returns a page containing script that grabs the time zone information from the host. That ...

“IMG_” Malspam Delivers GlobeImposter Ransomware

I received this malspam sample on Saturday from a friend, so it’s already a couple days old. While this is ancient in malspam years I felt like writing up something since I haven’t done a malspam post in quite some time. The subject line of the malspam samples that I received all started with “IMG_” ...

Rulan Campaign Redirects to RIG EK at 188.225.33.43 and Drops a Miner

Watcha know about Mining!? Today I was doing some digging (no pun intended) into numerous domains used during recent malvertising redirection chains. These domains appear to be related to a campaign dubbed “Rulan”. Let’s start off with showing the redirection chain: As you can see from the TCP streams there are a lot of 302 ...

Campaign Leads to RIG EK and Fake Flash Player Update Site. RIG Drops URLZone and Fake Flash Player Update Drops a Miner.

On 08/02/17 I used the domain www2[.]davidhelpling[.]org to redirect my host to a RIG EK landing page located at 188.225.79.139. RIG ended up dropping URLZone, which is a banking Trojan first discovered in 2009. More recently URLZone has been seen targeting Japan via malspam campaigns. You can read more about URLZone at the link below, as ...

Malvertising Chain Leads to the HookAds Campaign. RIG Drops Dreambot.

The site I used for today’s malvertising chain appears to be a legitimate adult website, however, downstream of more popular ones. According to traffic estimates the site has received roughly 637,100 visitors over the last 30 days. Alexa.com currently ranks the site in the top 33,000 globally, with most of its visitors coming from India ...