Stay Ahead of Cyber Threats – Daily Security Insights, Powered by AI
By Securonix Threat Labs, Threat Research: Oleg Kolesnikov, Den Iuzvyk, and Tim Peck
IntroductionOur researchers have identified EnemyBot, a brand new Linux-based botnet. At first glance and by analyzing the initial infection, it appears to cover a wide range of devices and platforms. This report covers technical details including its origin and functionality.…
I came across a fairly interesting VBS-based DanaBot downloader the other day, and I figured it was worth doing a quick write-up on the obfuscation scheme and a few of the other TPPs I observed. The social engineering pretext used in this campaign was interesting as it leveraged an “unclaimed property” themed lure and required user interaction to deliver the first stage payload.…
Over recent months, the CrowdStrike Falcon® OverWatch™ team has tracked an ongoing, widespread intrusion campaign leveraging bundled .msi installers to trick victims into downloading malicious payloads alongside legitimate software. These payloads and scripts were used to perform reconnaissance and ultimately download and execute NIGHT SPIDER’s Zloader trojan, as detailed in CrowdStrike CROWDSTRIKE FALCON® INTELLIGENCE™ Premium reporting.…
CryptBot is back. A new and improved version of the malicious infostealer has been unleashed via compromised pirate sites, which appear to offer “cracked” versions of popular software and video games.
Making news most recently for an outbreak in early 2022, the malware first appeared in the wild in 2019, and it is now actively changing its attack and distribution methods.…
By Edmund Brumaghin, with contributions from Jonathan Byrne, Perceo Lemos and Vasileios Koutsoumpogeras.
This post is also available in:日本語 (Japanese)
Українська (Ukrainian)
Executive SummarySince the beginning of the war in Ukraine, we have observed threat actors using email lures with themes related to the conflict, including humanitarian assistance and various types of fundraising.…The emails can be jarring, but the technique used by Qakbot (aka Qbot) seems to be especially convincing: The email-borne malware has a tendency to spread itself around by inserting malicious replies into the middle of existing email conversations, using the compromised accounts of other infection victims.…
In July of 2021, we identified an infection campaign targeting important European entities. During this investigation we could identify the threat actor behind these attacks as LazyScripter, an emerging APT group pointed by MalwareBytes in February 2021.
Through our analysis, we could track their activity with precise dates in 2021 based on their samples.…
Українська (Ukrainian)
Update March 17, 2022: Cisco Talos has updated the IOC section with additional hashes and ClamAV coverage.
Executive summaryOpportunistic cybercriminals are attempting to exploit Ukrainian sympathizers by offering malware purporting to be offensive cyber tools to target Russian entities.…Adversaries don’t work 9-5 and neither do we. At eSentire, our 24/7 SOCs are staffed with Elite Threat Hunters and Cyber Analysts who hunt, investigate, contain and respond to threats within minutes.
We have discovered some of the most dangerous threats and nation state attacks in our space – including the Kaseya MSP breach and the more_eggs malware.…
The ASEC analysis team has recently discovered an infostealer that is being distributed via YouTube. The attacker disguised the malware as a game hack for Valorant, and uploaded the following video with the download link for the malware, then guided the user to turn off the anti-malware program.…
We recently came across a stealer, called Raccoon Stealer, a name given to it by its author. Raccoon Stealer uses the Telegram infrastructure to store and update actual C&C addresses.
Raccoon Stealer is a password stealer capable of stealing not just passwords, but various types of data, including:
Cookies, saved logins and forms data from browsers Login credentials from email clients and messengers Files from crypto wallets Data from browser plugins and extension Arbitrary files based on commands from C&CIn addition, it’s able to download and execute arbitrary files by command from its C&C.…
Since its reemergence on Nov. 14, 2021, Black Lotus Labs has once again been tracking Emotet, one of the world’s most prolific malware distribution families which previously infected more than 1.6M devices and caused hundreds of millions of dollars in damage across critical infrastructure, healthcare, government organizations and enterprises around the world.…
We analyze RURansom, a malware variant discovered to be targeting Russia. Originally suspected to be a ransomware because of its name, analysis reveals RURansom to be a wiper.
A conflict in cyberspace is unfolding parallel to the conflict between Russia and Ukraine on the ground. Cyberattacks are being lobbed against both Russian and Ukrainian sides, with a new wiper directed against Russia joining the fray.…
For additional information regarding deserialization exploits and our new hunting rule generation tool ‘HeySerial’, read our blog post, Now You Serial, Now You Don’t — Systematically Hunting for Deserialization Exploits.
USAHerds (CVE-2021-44207) Zero-DayIn three investigations from 2021, APT41 exploited a zero-day vulnerability in the USAHerds web application.…
Since the dawn of phishing, fraudulent invoicing and purchasing schemes have been one of the most common lures. The usual modus operandi involves appealing to the recipient’s desire to avoid incurring a debt, especially where a business may be involved.
FortiGuard Labs recently came across an interesting phishing e-mail masquerading as a purchase order addressed to a Ukrainian manufacturing organization that deals with raw materials and chemicals.…
In March 2022, we came across evidence that another, relatively unknown, ransomware known as Nokoyawa is likely connected with Hive, as the two families share some striking similarities in their attack chain, from the tools used to the order in which they execute various steps.
Hive, which is one of the more notable ransomware families of 2021, made waves in the latter half of the year after breaching over 300 organizations in just four months — allowing the group to earn what could potentially be millions of US dollars in profit.…
Recently, Fortinet’s FortiGuard Labs captured more than 500 Microsoft Excel files that were involved in a campaign to deliver a fresh Emotet Trojan onto the victim’s device.
Emotet, known as a modular Trojan, was first discovered in the middle of 2014. Since then, it has become very active, continually updating itself.…
8/24 Editor’s Note: Since the publication, SMTP2Go has updated its security measures.
Key TakeawaysProofpoint researchers have identified ongoing activity by the China-aligned APT actor TA416 in which the group is targeting European diplomatic entities, including an individual involved in refugee and migrant services. This targeting is consistent with other activity reported by Proofpoint, showing an interest in refugee policies and logistics across the APT actor landscape which coincides with increased tensions and now armed conflict between Russia and Ukraine.…By Jake Longden, Cofense Phishing Defense Center
Microsoft Power BI, a popular data-visualization tool, is designed to help users wrangle their data in multiple and more human-friendly formats. As a recognizable application from a commonly used and trusted vendor, Power BI is also a prime target for threat actors to spoof and abuse it for phishing attacks.…