FBI Releases Indicators of Compromise Associated with Hive Ransomware

The Federal Bureau of Investigation FBI has released a Flash report detailing indicators of compromise IOCs and tactics, techniques, and procedures TTPs associated with ransomware attacks by Hive, a likely Ransomware-as-a-Service organization consisting of a number of actors using multiple...

US government and private sector agree to invest time, money in cybersecurity

In the wake of several high-profile ransomware attacks against critical infrastructure and major organizations in the last few months, President Biden met with private sector and education leaders to discuss a whole-of-nation effort needed to address cybersecurity threats and bolster the nation’s...

Podcast: Ransomware Up x10; Telecoms Uber Walloped

Year-over-year, ransomware spiked more than tenfold in the first half of 2021, researchers report. According to Fortinet’s latest semiannual FortiGuard Labs Global Threat Landscape Report PDF, released on Monday, the telecommunications sector was the most heavily targeted, followed by government,...

Microsoft Breaks Silence on Barrage of ProxyShell Attacks

Microsoft has broken its silence on the recent barrage of attacks on several ProxyShell vulnerabilities in that were highlighted by a researcher at Black Hat earlier this month. The company released an advisory late Wednesday letting customers know that threat actors may use unpatched Exchange...

The Increased Liability of Local In-home Propagation

Today I discuss an attack vector conducive to cross-organizational spread, in-home local propagation. Though often overlooked, this vector is especially relevant today, as many corporate employees remain working from home. In this post, I contrast in-home local propagation with traditional vector...

FBI Releases Indicators of Compromise Associated with OnePercent Group Ransomware

The Federal Bureau of Investigation FBI has released a Flash report detailing indicators of compromise IOCs associated with ransomware attacks by the OnePercent Group, a cyber-criminal organization known since November 2020 for using Cobalt Strike in phishing attacks against U.S. companies. CISA...

Effective Threat-Hunting Queries in a Redacted World

A decade ago, hunting for adversary infrastructure was often as simple as monitoring a domain registrant’s name or phone number in public WHOIS records. As bad actors have moved first toward privacy protection services and then gained further obscurity behind laws such as the General Data...

Researchers Warn of 4 Emerging Ransomware Groups That Can Cause Havoc

Cybersecurity researchers on Tuesday took the wraps off four up-and-coming ransomware groups that could pose a serious threat to enterprises and critical infrastructure, as the ripple effect of a recent spurt in ransomware incidents show that attackers are growing more sophisticated and more...

ProxyShell and PetitPotam exploits weaponized by LockFile Ransomware Group

THREAT LEVEL: Red. For a detailed advisory, download the pdf file here. LockFile, a new ransomware gang, has been active since last week. LockFile began by using a publicly disclosed PetitPotam exploit CVE-2021-36942 to compromise Windows Domain Controllers earlier this week. Using ProxyShell...

ProxyShell Attacks Pummel Unpatched Exchange Servers

Over the weekend, the Cybersecurity & Infrastructure Security Agency CISA issued an urgent alert that attackers are actively attacking ProxyShell vulnerabilities in unpatched Microsoft Exchange Servers, joining researchers in urging organizations to immediately install the latest Microsoft Securi...

Top 15 Vulnerabilities Attackers Exploited Millions of Times to Hack Linux Systems

Close to 14 million Linux-based systems are directly exposed to the Internet, making them a lucrative target for an array of real-world attacks that could result in the deployment of malicious web shells, coin miners, ransomware, and other trojans. That's according to an in-depth look at the Linu...

Patch now! Microsoft Exchange is being attacked via ProxyShell

Last Saturday the Cybersecurity and Infrastructure Security Agency issued an urgent warning that threat actors are actively exploiting three Microsoft Exchange vulnerabilities—CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207. These vulnerabilities can be chained together to remotely execute...

A week in security (August 16 – August 22)

Last week on Malwarebytes Labs: Podcast: Katie Moussouris hacked Clubhouse. Her emails went unanswered for weeks. How to troubleshoot hardware problems that look like malware problems. Analysts “strongly believe” the Russian state colludes with ransomware gangs. macOS 11’s hidden security...

WARNING: Microsoft Exchange Under Attack With ProxyShell Flaws

The U.S. Cybersecurity and Infrastructure Security Agency is warning of active exploitation attempts that leverage the latest line of "ProxyShell" Microsoft Exchange vulnerabilities that were patched earlier this May, including deploying LockFile ransomware on compromised systems. Tracked as...

Nigerian Threat Actors Solicit Employees to Deploy Ransomware for Cut of Profits

Researchers have discovered a Nigerian threat actor trying to turn an organization’s employees into insider threats by soliciting them to deploy ransomware for a cut of the ransom profits. Researchers at Abnormal Security identified and blocked a number of emails sent earlier this month to some i...

Cybercrime Group Asking Insiders for Help in Planting Ransomware

A Nigerian threat actor has been observed attempting to recruit employees by offering them to pay $1 million in bitcoins to deploy Black Kingdom ransomware on companies' networks as part of an insider threat scheme. "The sender tells the employee that if they're able to deploy ransomware on a...

How Ready Are You for a Ransomware Attack?

Determining how hard a target you present for the current wave of human-driven ransomware involves multiple considerations. There are four steps to analyzing how prepared you are for a ransomware attack. Such analysis roughly breaks down as follows: 1 How easy it is to break into your environment...

Wanted: Disgruntled Employees to Deploy Ransomware

Criminal hackers will try almost anything to get inside a profitable enterprise and secure a million-dollar payday from a ransomware infection. Apparently now that includes emailing employees directly and asking them to unleash the malware inside their employers network in exchange for a percenta...

Researchers Find New Evidence Linking Diavol Ransomware to TrickBot Gang

Cybersecurity researchers have disclosed details about an early development version of a nascent ransomware strain called Diavol that has been linked to threat actors behind the infamous TrickBot syndicate. The latest findings from IBM X-Force show that the ransomware sample shares similarities t...

[Security Nation] Daniel Crowley on Running a Cybersecurity Internship

!\Security Nation\ Daniel Crowley on Running a Cybersecurity Internshiphttps://blog.rapid7.com/content/images/2021/08/securitynationlogo-1.jpg On the latest episode of Security Nation, we’re joined by Daniel Crowley, IBM X-Force Red’s Research Director — aka Global Research Baron a title that...