Cybercriminals Use Excel Exploit to Spread Fileless Remcos RAT Malware

Cybersecurity researchers have discovered a new phishing campaign that spreads a new fileless variant of known commercial malware called Remcos RAT. Remcos RAT "provides purchases with a wide range of advanced features to remotely control computers belonging to the buyer," Fortinet FortiGuard Lab...

Hackers Use Excel Files to Deliver Remcos RAT Variant on Windows

This article explains the inner workings of the Remcos RAT, a dangerous malware that uses advanced techniques to…...

Unwrapping the emerging Interlock ransomware attack

Cisco Talos Incident Response Talos IR recently observed an attacker conducting big-game hunting and double extortion attacks using the relatively new Interlock ransomware. Our analysis uncovered that the attacker used multiple components in the delivery chain including a Remote Access Tool RAT...

Threat Spotlight: WarmCookie/BadSpace

WarmCookie is a malware family that emerged in April 2024 and has been distributed via regularly conducted malspam and malvertising campaigns. WarmCookie, observed being used for initial access and persistence, offers a means for continuous long-term access to compromised environments and is used...

Gophish Framework Used in Phishing Campaigns to Deploy Remote Access Trojans

Russian-speaking users have become the target of a new phishing campaign that leverages an open-source phishing toolkit called Gophish to deliver DarkCrystal RAT aka DCRat and a previously undocumented remote access trojan dubbed PowerRAT. "The campaign involves modular infection chains that are...

Threat actor abuses Gophish to deliver new PowerRAT and DCRAT

Cisco Talos recently discovered a phishing campaign using an open-source phishing toolkit called Gophish by an unknown threat actor. The campaign involves modular infection chains that are either Maldoc or HTML-based infections and require the victim's intervention to trigger the infection chain...

Russian RomCom Attacks Target Ukrainian Government with New SingleCamper RAT Variant

The Russian threat actor known as RomCom has been linked to a new wave of cyber attacks aimed at Ukrainian government agencies and unknown Polish entities since at least late 2023. The intrusions are characterized by the use of a variant of the RomCom RAT dubbed SingleCamper aka SnipBot or RomCom...

New Malware Campaign Uses PureCrypter Loader to Deliver DarkVision RAT

Cybersecurity researchers have disclosed a new malware campaign that leverages a malware loader named PureCrypter to deliver a commodity remote access trojan RAT called DarkVision RAT. The activity, observed by Zscaler ThreatLabz in July 2024, involves a multi-stage process to deliver the RAT...

GitHub, Telegram Bots, and ASCII QR Codes Abused in New Wave of Phishing Attacks

A new tax-themed malware campaign targeting insurance and finance sectors has been observed leveraging GitHub links in phishing email messages as a way to bypass security measures and deliver Remcos RAT, indicating that the method is gaining traction among threat actors. "In this campaign,...

North Korean Hackers Using New VeilShell Backdoor in Stealthy Cyber Attacks

Threat actors with ties to North Korea have been observed delivering a previously undocumented backdoor and remote access trojan RAT called VeilShell as part of a campaign targeting Cambodia and likely other Southeast Asian countries. The activity, dubbed SHROUDEDSLEEP by Securonix, is believed t...

Cloudflare Warns of India-Linked Hackers Targeting South and East Asian Entities

An advanced threat actor with an India nexus has been observed using multiple cloud service providers to facilitate credential harvesting, malware delivery, and command-and-control C2. Web infrastructure and security company Cloudflare is tracking the activity under the name SloppyLemming, which ...

New Brazilian-Linked SambaSpy Malware Targets Italian Users via Phishing Emails

A previously undocumented malware called SambaSpy is exclusively targeting users in Italy via a phishing campaign orchestrated by a suspected Brazilian Portuguese-speaking threat actor. "Threat actors usually try to cast a wide net to maximize their profits, but these attackers are focused on jus...

Exotic SambaSpy is now dancing with Italian users

Introduction In May 2024, we detected a campaign exclusively targeting victims in Italy. We were rather surprised by this, as cybercriminals typically select a broader target to maximize their profits. For example, a certain type of malware might target users in France and Spain, with the phishin...

In Go before 1.15.13 and 1.16.x before 1.16.5 there can be a panic for a large exponent to the math/big.Rat SetString or UnmarshalText method.

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Blind Eagle Targets Colombian Insurance Sector with Customized Quasar RAT

The Colombian insurance sector is the target of a threat actor tracked as Blind Eagle with the end goal of delivering a customized version of a known commodity remote access trojan RAT referred to as Quasar RAT since June 2024. "Attacks have originated with phishing emails impersonating the...

Malicious npm Packages Mimicking 'noblox.js' Compromise Roblox Developers' Systems

Roblox developers are the target of a persistent campaign that seeks to compromise systems through bogus npm packages, once again underscoring how threat actors continue to exploit the trust in the open-source ecosystem to deliver malware. "By mimicking the popular 'noblox.js' library, attackers...

golang: math/big: uncontrolled memory consumption due to an unhandled overflow via Rat.SetString

A flaw was found in the big package of the math library in golang. The Rat.SetString could cause an overflow, and if left unhandled, it could lead to excessive memory use. This issue could allow a remote attacker to impact the availability of the system...

macOS Version of HZ RAT Backdoor Targets Chinese Messaging App Users

Users of Chinese instant messaging apps like DingTalk and WeChat are the target of an Apple macOS version of a backdoor named HZ RAT. The artifacts "almost exactly replicate the functionality of the Windows version of the backdoor and differ only in the payload, which is received in the form of...

HZ Rat backdoor for macOS attacks users of China’s DingTalk and WeChat

In June 2024, we discovered a macOS version of the HZ Rat backdoor targeting users of the enterprise messenger DingTalk and the social network and messaging platform WeChat. The samples we found almost exactly replicate the functionality of the Windows version of the backdoor and differ only in t...

North Korean Hackers Deploy New MoonPeak Trojan in Cyber Campaign

A new remote access trojan called MoonPeak has been discovered as being used by a state-sponsored North Korean threat activity cluster as part of a new campaign. Cisco Talos attributed the malicious cyber campaign to a hacking group it tracks as UAT-5394, which it said exhibits some level of...