Last May, law enforcement authorities around the world scored a key win when they hobbled the infrastructure of Lumma, an infostealer that infected nearly 395,000 Windows computers over just a two-month span leading up to the international operation. Researchers said Wednesday that Lumma is once again “back at scale” in hard-to-detect attacks that pilfer credentials and sensitive files.

Lumma, also known as Lumma Stealer, first appeared in Russian-speaking cybercrime forums in 2022. Its cloud-based malware-as-a-service model provided a sprawling infrastructure of domains for hosting lure sites offering free cracked software, games, and pirated movies, as well as command-and-control channels and everything else a threat actor needed to run their infostealing enterprise. Within a year, Lumma was selling for as much as $2,500 for premium versions. By the spring of 2024, the FBI counted more than 21,000 listings on crime forums. Last year, Microsoft said Lumma had become the “go-to tool” for multiple crime groups, including Scattered Spider, one of the most prolific groups.

Takedowns are hard

The FBI and an international coalition of its counterparts took action early last year. In May, they said they seized 2,300 domains, command-and-control infrastructure, and crime marketplaces that had enabled the infostealer to thrive. Recently, however, the malware has made a comeback, allowing it to infect a significant number of machines again.

Read full article

Comments

Open source packages published on the npm and PyPI repositories were laced with code that stole wallet credentials from dYdX developers and backend systems and, in some cases, backdoored devices, researchers said.

“Every application using the compromised npm versions is at risk ….” the researchers, from security firm Socket, said Friday. “Direct impact includes complete wallet compromise and irreversible cryptocurrency theft. The attack scope includes all applications depending on the compromised versions and both developers testing with real credentials and production end-users."

Packages that were infected were:

Read full article

Comments

Russian-state hackers wasted no time exploiting a critical Microsoft Office vulnerability that allowed them to compromise the devices inside diplomatic, maritime, and transport organizations in more than half a dozen countries, researchers said Wednesday.

The threat group, tracked under names including APT28, Fancy Bear, Sednit, Forest Blizzard, and Sofacy, pounced on the vulnerability, tracked as CVE-2026-21509, less than 48 hours after Microsoft released an urgent, unscheduled security update late last month, the researchers said. After reverse-engineering the patch, group members wrote an advanced exploit that installed one of two never-before-seen backdoor implants.

Stealth, speed, and precision

The entire campaign was designed to make the compromise undetectable to endpoint protection. Besides being novel, the exploits and payloads were encrypted and ran in memory, making their malice hard to spot. The initial infection vector came from previously compromised government accounts from multiple countries and were likely familiar to the targeted email holders. Command and control channels were hosted in legitimate cloud services that are typically allow-listed inside sensitive networks.

Read full article

Comments

Infrastructure delivering updates for Notepad++—a widely used text editor for Windows—was compromised for six months by suspected China-state hackers who used their control to deliver backdoored versions of the app to select targets, developers said Monday.

“I deeply apologize to all users affected by this hijacking,” the author of a post published to the official notepad-plus-plus.org site wrote Monday. The post said that the attack began last June with an “infrastructure-level compromise that allowed malicious actors to intercept and redirect update traffic destined for notepad-plus-plus.org.” The attackers, whom multiple investigators tied to the Chinese government, then selectively redirected certain targeted users to malicious update servers where they received backdoored updates. Notepad++ didn’t regain control of its infrastructure until December.

The attackers used their access to install a never-before-seen payload that has been dubbed Chrysalis. Security firm Rapid 7 descrbed it as a "custom, feature-rich backdoor."

Read full article

Comments

Two security professionals who were arrested in 2019 after performing an authorized security assessment of a county courthouse in Iowa will receive $600,000 to settle a lawsuit they brought alleging wrongful arrest and defamation.

The case was brought by Gary DeMercurio and Justin Wynn, two penetration testers who at the time were employed by Colorado-based security firm Coalfire Labs. The men had written authorization from the Iowa Judicial Branch to conduct “red-team” exercises, meaning attempted security breaches that mimic techniques used by criminal hackers or burglars.

The objective of such exercises is to test the resilience of existing defenses using the types of real-world attacks the defenses are designed to repel. The rules of engagement for this exercise explicitly permitted “physical attacks,” including “lockpicking,” against judicial branch buildings so long as they didn’t cause significant damage.

Read full article

Comments

RAMP—the predominantly Russian-language online bazaar that billed itself as the “only place ransomware allowed”—had its dark web and clear web sites seized by the FBI as the agency tries to combat the growing scourge threatening critical infrastructure and organizations around the world.

Visits to both sites on Wednesday returned pages that said the FBI had taken control of the RAMP domains, which mirrored each other. RAMP has been among the dwindling number of online crime forums to operate with impunity, following the takedown of other forums such as XSS, which saw its leader arrested last year by Europol. The vacuum left RAMP as one of the leading places for people pushing ransomware and other online threats to buy, sell, or trade products and services.

I regret to inform you

“The Federal Bureau of Investigation has seized RAMP,” a banner carrying the seals of the FBI and the Justice Department said. “This action has been taken in coordination with the United States Attorney’s Office for the Southern District of Florida and the Computer Crime and Intellectual Property Section of the Department of Justice.” The banner included a graphic that appeared on the RAMP site, before it was seized, that billed itself as the “only place ransomware allowed.”

Read full article

Comments

There are reports that a legitimate Microsoft email address—which Microsoft explicitly says customers should add to their allow list—is delivering scam spam.

The emails originate from no-reply-powerbi@microsoft.com, an address tied to Power BI. The Microsoft platform provides analytics and business intelligence from various sources that can be integrated into a single dashboard. Microsoft documentation says that the address is used to send subscription emails to mail-enabled security groups. To prevent spam filters from blocking the address, the company advises users to add it to allow lists.

From Microsoft, with malice

According to an Ars reader, the address on Tuesday sent her an email claiming (falsely) that a $399 charge had been made to her. "It provided a phone number to call to dispute the transaction. A man who answered a call asking to cancel the sale directed me to download and install a remote access application, presumably so he could then take control of my Mac or Windows machine (Linux wasn’t allowed)," she said. The email, captured in the two screenshots below, looked like this:

Read full article

Comments