Lumma Stealer: Breaking down the delivery techniques and capabilities of a prolific infostealer

Over the past year, Microsoft observed the persistent growth and operational sophistication of Lumma Stealer, an infostealer malware used by multiple financially motivated threat actors to target various industries. Our investigation into Lumma Stealer’s distribution infrastructure reveals a...

Key Takeaways from the Take Command Summit 2025: Inside the Mind of an Attacker

In one of the most anticipated sessions of Take Command 2025, Raj Samani, Chief Scientist at Rapid7, sat down with Trent Teyema, former FBI Special Agent and President of CSG Strategies, for a candid conversation on how threat actors are evolving and what defenders must do to keep up. Moderated b...

Key Takeaways from the Take Command Summit 2025: Inside the Mind of an Attacker

In one of the most anticipated sessions of Take Command 2025, Raj Samani, Chief Scientist at Rapid7, sat down with Trent Teyema, former FBI Special Agent and President of CSG Strategies, for a candid conversation on how threat actors are evolving and what defenders must do to keep up. Moderated b...

CVE-2025-4477

The ThreatSonar Anti-Ransomware from TeamT5 has a Privilege Escalation vulnerability, allowing remote attackers with intermediate privileges to escalate their privileges to highest administrator level through a specific API...

LockBit Leak Shows Affiliates Use Pressure Tactics, Rarely Get Paid

Weeks after LockBit ransomware breach, leaked data reveals how affiliates generate ransomware, set ransom demands, and often walk away unpaid...

New Nitrogen Ransomware Targets Financial Firms in the US, UK and Canada

Nitrogen, a ransomware strain, has emerged as a major threat to organizations worldwide, with a particular focus on…...

Ransomware Gangs Use Skitnet Malware for Stealthy Data Theft and Remote Access

Several ransomware actors are using a malware called Skitnet as part of their post-exploitation efforts to steal sensitive data and establish remote control over compromised hosts. "Skitnet has been sold on underground forums like RAMP since April 2024," Swiss cybersecurity company PRODAFT told T...

A week in security (May 12 – May 18)

Last week on Malwarebytes Labs: Data broker protection rule quietly withdrawn by CFPB Meta sent cease and desist letter over AI training Google to pay $1.38 billion over privacy violations Android users bombarded with unskippable ads Last week on ThreatDown: ThreatDown introduces Firewall...

CVE-2025-4477

The ThreatSonar Anti-Ransomware from TeamT5 has a Privilege Escalation vulnerability, allowing remote attackers with intermediate privileges to escalate their privileges to highest administrator level through a specific API...

CVE-2025-4477 TeamT5 ThreatSonar Anti-Ransomware - Privilege Escalation

The ThreatSonar Anti-Ransomware from TeamT5 has a Privilege Escalation vulnerability, allowing remote attackers with intermediate privileges to escalate their privileges to highest administrator level through a specific API...

CVE-2025-4477

CVE-2025-4477 concerns ThreatSonar Anti-Ransomware (TeamT5). Affected component is the API authorization/privilege management, where improper handling of specific API privileges allows remote attackers with intermediate privileges to escalate to administrator level via a particular API. Related e...

PT-2025-21888 · Unknown · Threatsonar Anti-Ransomware

Name of the Vulnerable Software and Affected Versions: ThreatSonar Anti-Ransomware versions up to 3.8.0 Description: The issue allows remote attackers with intermediate privileges to escalate their privileges to the highest administrator level through a specific API. This vulnerability affects th...

Locked Out and Held for Ransom: A City's Battle Against Cybercrime

Read how having a plan and doing some preparation in advance can lessen the severity of a ransomware attack — or prevent one altogether...

5 BCDR Essentials for Effective Ransomware Defense

Ransomware has evolved into a deceptive, highly coordinated and dangerously sophisticated threat capable of crippling organizations of any size. Cybercriminals now exploit even legitimate IT tools to infiltrate networks and launch ransomware attacks. In a chilling example, Microsoft recently...

RaaS Explained: How Cybercriminals Are Scaling Attacks Like Startups

There is a lot of money in cyberattacks like ransomware, and unfortunately for organizations of all sizes, the…...

Moldovan Police Arrest Suspect in €4.5M Ransomware Attack on Dutch Research Agency

Moldovan law enforcement authorities have arrested a 45-year-old foreign man suspected of involvement in a series of ransomware attacks targeting Dutch companies in 2021. "He is wanted internationally for committing several cybercrimes ransomware attacks, blackmail, and money laundering against...

A week in security (May 4 – May 10)

Last week on Malwarebytes Labs: The AI chatbot cop squad is here Lock and Code S06E09 Android fixes 47 vulnerabilities, including one zero-day. Update as soon as you can! "Your privacy is a promise we don’t break": Dating app Raw exposes sensitive user data FBI issues warning as scammers target...

About Elevation of Privilege – Windows Common Log File System Driver (CVE-2025-29824) vulnerability

About Elevation of Privilege - Windows Common Log File System Driver CVE-2025-29824 vulnerability. The vulnerability from the April Microsoft Patch Tuesday allows an attacker operating under a regular user account to escalate their privileges to SYSTEM level. According to Microsoft, the...

ICE’s Deportation Airline Hack Reveals Man ‘Disappeared’ to El Salvador

Plus: A DOGE operative’s laptop reportedly gets infected with malware, Grok AI is used to “undress” women on X, a school software company’s ransomware nightmare returns, and more...

Inside LockBit: Defense Lessons from the Leaked LockBit Negotiations

The LockBit ransomware gang recently suffered a significant data breach. Their dark web affiliate panels were defaced with the message "Don't do crime CRIME IS BAD xoxo from Prague," linking to a MySQL database dump. This archive contains a SQL file from LockBit's affiliate panel database that...