A week in security (July 22 – July 28)

Last week on Malwarebytes Labs: Meta takes down 63,000 sextortion-related accounts on Instagram Windows update may present users with a BitLocker recovery screen TracFone will pay $16 million to settle FCC data breach investigation Google admits it can’t quite quit third-party cookies Heritage...

Fake Hot Fix for CrowdStrike ”crowdstrike-hotfix.zip” Spreads Remcos RAT

Beware "crowdstrike-hotfix.zip"! This fake file spreads Remcos malware, targeting LatAm CrowdStrike users. Dont download it! Learn how to…...

Cybercriminals Exploit CrowdStrike Update Mishap to Distribute Remcos RAT Malware

Cybersecurity firm CrowdStrike, which is facing the heat for causing worldwide IT disruptions by pushing out a flawed update to Windows devices, is now warning that threat actors are exploiting the situation to distribute Remcos RAT to its customers in Latin America under the guise of providing a...

Hijack Loader Malware Employs Process Hollowing, UAC Bypass in Latest Version

A newer version of a malware loader called Hijack Loader has been observed incorporating an updated set of anti-analysis techniques to fly under the radar. "These enhancements aim to increase the malware's stealthiness, thereby remaining undetected for longer periods of time," Zscaler ThreatLabz...

Ukraine Targeted in Cyberattack Exploiting 7-Year-Old Microsoft Office Flaw

Cybersecurity researchers have discovered a targeted operation against Ukraine that has been found leveraging a nearly seven-year-old flaw in Microsoft Office to deliver Cobalt Strike on compromised systems. The attack chain, which took place at the end of 2023 according to Deep Instinct, employs...

TA558 Hackers Weaponize Images for Wide-Scale Malware Attacks

The threat actor tracked as TA558 has been observed leveraging steganography as an obfuscation technique to deliver a wide range of malware such as Agent Tesla, FormBook, Remcos RAT, LokiBot, GuLoader, Snake Keylogger, and XWorm, among others. "The group made extensive use of steganography by...

Attackers Using Obfuscation Tools to Deliver Multi-Stage Malware via Invoice Phishing

Cybersecurity researchers have discovered an intricate multi-stage attack that leverages invoice-themed phishing decoys to deliver a wide range of malware such as Venom RAT, Remcos RAT, XWorm, NanoCore RAT, and a stealer that targets crypto wallets. The email messages come with Scalable Vector...

Ande Loader Malware Targets Manufacturing Sector in North America

The threat actor known as Blind Eagle has been observed using a loader malware called Ande Loader to deliver remote access trojans RATs like Remcos RAT and NjRAT. The attacks, which take the form of phishing emails, targeted Spanish-speaking users in the manufacturing industry based in North...

New IDAT Loader Attacks Using Steganography to Deploy Remcos RAT

Ukrainian entities based in Finland have been targeted as part of a malicious campaign distributing a commercial remote access trojan known as Remcos RAT using a malware loader called IDAT Loader. The attack has been attributed to a threat actor tracked by the Computer Emergency Response Team of...

Remcos RAT Spreading Through Adult Games in New Attack Wave

The remote access trojan RAT known as Remcos RAT has been found being propagated via webhards by disguising it as adult-themed games in South Korea. WebHard, short for web hard drive, is a popular online file storage system used to upload, download, and share files in the country. While webhards...

Decoding UAC-0050’s Cyber Espionage Playbook

Summary: UAC-0050, a threat actor focused on Ukraine, is using new tactics to spread the Remcos RAT. In their latest move, UAC-0050 shows advanced adaptability by cleverly avoiding detection through a hidden data transfer method and outsmarting EDR systems. Threat Level - Amber | Attack Report Fo...

UAC-0050 Group Using New Phishing Tactics to Distribute Remcos RAT

The threat actor known as UAC-0050 is leveraging phishing attacks to distribute Remcos RAT using new strategies to evade detection from security software. "The group's weapon of choice is Remcos RAT, a notorious malware for remote surveillance and control, which has been at the forefront of its...

Threat Roundup for October 13 to October 20

Today, Talos is publishing a glimpse into the most prevalent threats weve observed between Oct. 13 and Oct. 20. As with previous roundups, this post isnt meant to be an in-depth analysis. Instead, this post will summarize the threats weve observed by highlighting key behavioral characteristics,...

QakBot Resurges Latest Strikes with Ransom Knight and Remcos RAT

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary The QakBot malware has been associated with a persistent phishing campaign since the beginning of August 2023, leading to the deployment of both the Ransom Knight ransomware and the Remcos RAT. To receiv...

QakBot Threat Actors Still in Action, Using Ransom Knight and Remcos RAT in Latest Attacks

Despite the disruption to its infrastructure, the threat actors behind the QakBot malware have been linked to an ongoing phishing campaign since early August 2023 that led to the delivery of Ransom Knight aka Cyclops ransomware and Remcos RAT. This indicates that "the law enforcement operation ma...

Cybercriminals Combine Phishing and EV Certificates to Deliver Ransomware Payloads

The threat actors behind RedLine and Vidar information stealers have been observed pivoting to ransomware through phishing campaigns that spread initial payloads signed with Extended Validation EV code signing certificates. "This suggests that the threat actors are streamlining operations by maki...

Exploit for Insufficient Verification of Data Authenticity in Rarlab Winrar

CVE-2023-38831 - WinRAR File Extension Spoofing Vulnerability...

WinRAR Security Flaw Exploited in Zero-Day Attacks to Target Traders

A recently patched security flaw in the popular WinRAR archiving software has been exploited as a zero-day since April 2023, new findings from Group-IB reveal. The vulnerability, cataloged as CVE-2023-38831, allows threat actors to spoof file extensions, thereby making it possible to launch...

New Attack Alert: Freeze[.]rs Injector Weaponized for XWorm Malware Attacks

Malicious actors are using a legitimate Rust-based injector called Freeze.rs to deploy a commodity malware called XWorm in victim environments. The novel attack chain, detected by Fortinet FortiGuard Labs on July 13, 2023, is initiated via a phishing email containing a booby-trapped PDF file. It...

Rust-Based Injector Deploys XWorm and Remcos RAT in Multi-Stage Attack

By Waqas FortiGuard Labs Reveals Insights into Recent Surge of Cyberattacks Utilizing Rust Programming Language. This is a post from HackRead.com Read the original post: Rust-Based Injector Deploys XWorm and Remcos RAT in Multi-Stage Attack...