TAU Threat Intelligence Notification: Spear Phishing Targeting Italy

Summary This campaign is targeting users in Italy with spear phishing email containing malicious attachments. Figure 1: Emails with the malicious XLS attachment The image above show one of the sample has attached in multiple email that has been sent to email address with Italy ccTLD. The attached...

TAU Threat Intelligence Notification: Java Embedded MSI Files

Summary Application whitelisting provides environments with access controls to stop unauthorized software from executing. This is accomplished by utilizing file and folder attributes including but not limited to file path, filename, digital signature, publisher, cryptographic hash and product nam...

New malware found using Google Drive as its command-and-control server

Since most security tools also keep an eye on the network traffic to detect malicious IP addresses, attackers are increasingly adopting infrastructure of legitimate services in their attacks to hide their malicious activities. Cybersecurity researchers have now spotted a new malware attack campai...

Vidar and GandCrab: stealer and ransomware combo observed in the wild

We have been tracking a prolific malvertising campaign for several weeks and captured a variety of payloads, including several stealers. One that we initially identified as Arkei turned out to be Vidar, a new piece of malware recently analyzed in detail by Fumik0 in his post: Let’s dig into Vidar...

Threat Roundup for November 2 to November 9

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Nov. 02 and Nov. 09. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics...

sLoad Banking Trojan Downloader Displays Sophisticated Recon and Targeting

A new PowerShell downloader dubbed sLoad is making the rounds, sporting impressive reconnaissance tactics and a penchant for geofencing, which indicate increasing sophistication when it comes to targeting efforts. First spotted in May 2018, sLoad typically delivers the Ramnit banking trojan but h...

Tracking Tick Through Recent Campaigns Targeting East Asia

This blog post is authored by Ashlee Benge and Jungsoo An, with contributions from Dazhuo Li. Summary Since 2016, an advanced threat group that Cisco Talos is tracking has carried out cyberattacks against South Korea and Japan. This group is known by several different names: Tick, Redbaldknight a...

Active Campaign Exploits Critical Apache Struts 2 Flaw in the Wild

It was only a matter of time before attacks were seen in the wild, and now it’s happened. A known threat actor has mounted a large cryptomining campaign using the recently disclosed Apache Struts 2 critical remote code-execution vulnerability. It uses a new malware designed for persistence and...

Threat Roundup for August 24-31

Today, as we do every week, Talos is giving you a glimpse into the most prevalent threats we’ve observed this week — covering the dates between Aug. 24 and 31. As with previous roundups, this post isn’t meant to be an in-depth analysis. Instead, we will summarize the threats we’ve observed by...

New Actor DarkHydrus Targets Middle East with Open-Source Phishing

Government entities and educational institutions in the Middle East are under attack in an ongoing credential-harvesting campaign, mounted by a newly-named threat group known as DarkHydrus. In a twist on the norm, the group is leveraging the open-source Phishery tool to carry out its dark work. T...

Ramnit Changes Shape with Widespread Black Botnet

The recently uncovered “Black” botnet campaign using the Ramnit malware racked up 100,000 infections in the two months through July– but the offensive could just be a precursor to a much larger attack coming down the pike, according to researchers, thanks to a second-stage malware called Ngioweb...

FELIXROOT Backdoor Resurfaces in Environmental Spam Campaign

After a few months of absence, the FELIXROOT backdoor malware has been spotted in a fresh malspam campaign. The campaign uses weaponized lure documents claiming to contain seminar information on environmental protection efforts. This backdoor has a range of functions, including the ability to...

Shopify: Subdomain Takeover - https://competition.shopify.com/

Dear Shopify Security Team, The Shopify.com subdomain competition.shopify.com was vulnerable to a subdomain takeover as it was pointing to an unclaimed Heroku service through the CNAME competition.shopify.com.herokudns.com, while the custom domain 'competition.shopify.com' was unclaimed in Heroku...

Nocturnal Stealer Lets Low-Skilled Cybercrooks Harvest Sensitive Info

The Nocturnal Stealer malware has crept into the Dark Web like a thief in the night, offering criminals a lucrative payday for a small price — and little effort. It’s a commodity malware, debuting on an underground forum in March for the low price of $25. It steals things, including 28 different...

VPNFilter Malware Infects 500k Routers Including Linksys, MikroTik, NETGEAR

Malware called VPNFilter has infected 500,000 router brands ranging from Linksys, MikroTik, NETGEAR and TP-Link that are mostly used in home offices. Researchers at Cisco Talos said they decided to warn the public of the threat despite the fact the infected devices and malware are still under...

MassMiner Takes a Kitchen-Sink Approach to Cryptomining

Though it falls squarely into the trend of cryptominers setting their sights on the Monero virtual currency, the MassMiner malware family is adding its own special somethin’-somethin’ to the mix. It targets Windows servers with a variety of recent and well-known exploits – all within a single...

Google Play Boots Three Malicious Apps From Marketplace Tied to APTs

Two advanced persistent threat groups managed to sneak apps onto the Google Play marketplace earlier this year. Both were designed to conduct surveillance on targets located in the Middle East region, according to Lookout security researchers. One of the groups, identified as APT-C-23 also known ...

CVE-2018-4878 case: for a Hong Kong Telecommunications Company website is intrusion investigations-vulnerability and early warning-the black bar safety net

! Earlier, a researchers found that a Hong Kong Telecommunications Company website hacking attack, 3 May 21, Morphisec laboratory on the site of attack to carry out the investigation, investigators eventually found that the telecommunications company of the Group's official website was hacked, th...

New Android Malware Secretly Records Phone Calls and Steals Private Data

Security researchers at Cisco Talos have uncovered variants of a new Android Trojan that are being distributed in the wild disguising as a fake anti-virus application, dubbed "Naver Defender." Dubbed KevDroid, the malware is a remote administration tool RAT designed to steal sensitive information...

GoScanSSH Malware Targets SSH Servers, But Avoids Military and .GOV Systems

Researchers have identified a new malware family, dubbed GoScanSSH, that targets public facing SSH servers, but avoids those linked to government and military IP addresses. The malware has been in the wild since June 2017 and exhibits a number of unique characteristics, such as being written in t...