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Following Microsoft's release of out-of-band patches to address multiple zero-day flaws in on-premises versions of Microsoft Exchange Server, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) has  issued  an emergency directive warning of " active exploitation " of the vulnerabilities. The alert comes on the heels of Microsoft's  disclosure  that China-based hackers were exploiting unknown software bugs in Exchange server to steal sensitive data from select targets, marking the second time in four months that the U.S. has scrambled to address a widespread hacking campaign believed to be the work of foreign threat actors. While the company mainly attributed the campaign to a threat group called HAFNIUM, Slovakian cybersecurity firm ESET  said  it found evidence of CVE-2021-26855 being actively exploited in the wild by several cyber espionage groups, including LuckyMouse, Tick, and Calypso targeting servers located in the U.S., Europe, Asi...

Cybercriminals are now deploying remote access Trojans (RATs) under the guise of seemingly innocuous images hosted on infected websites, once again highlighting how threat actors quickly change tactics when their attack methods are discovered and exposed publicly. New research released by Cisco Talos reveals an active malware campaign targeting organizations in South Asia that utilize malicious Microsoft Office documents forged with macros to spread a RAT that goes by the name of  ObliqueRAT . First documented in  February 2020 , the malware has been linked to a threat actor tracked as  Transparent Tribe  (aka Operation C-Major, Mythic Leopard, or APT36), a highly prolific group allegedly of Pakistani origin known for its attacks against human rights activists in the country as well as military and government personnel in India. While the ObliqueRAT modus operandi previously overlapped with another Transparent Tribe campaign in December 2019 to disseminate Crims...

The attack surface is virtually expanding before our eyes. Protecting assets across multiple locations, with multiple solutions from different vendors, has become a daily concern for CISOs globally.  In a new e-book recently published ( download here ), CISOs with small security teams talk about the drivers for replacing their EDR/NGAV solutions with an Autonomous XDR solution and why they believe consolidation provides significant benefits to organization and team.  The first topic discussed is the need to ensure coverage and have optimal visibility in order to uncover even stealthy threats. Organizations keep adding more and more security solutions that extend visibility, yet these solutions need to be maintained, monitored, and managed, taking up quite a bit of the analyst's time. In addition, these systems each provide some visibility leaving the analysts to make contextual connections and create the complete attack storyline. Unfortunately, these processes take time, ...

Microsoft has awarded an independent security researcher $50,000 as part of its bug bounty program for reporting a flaw that could have allowed a malicious actor to hijack users' accounts without their knowledge. Reported by Laxman Muthiyah, the vulnerability aims to brute-force the seven-digit security code that's sent to a user's email address or mobile number to corroborate his (or her) identity before resetting the password in order to recover access to the account. Put differently, the account takeover scenario is a consequence of privilege escalation stemming from an authentication bypass at an endpoint which is used to verify the codes sent as part of the  account recovery process . The company addressed the issue in November 2020, before details of the flaw came to light on Tuesday. Although there are encryption barriers and rate-limiting checks designed to prevent an attacker from repeatedly submitting all the 10 million combinations of the codes in an automa...

Microsoft has  released emergency patches  to address four previously undisclosed security flaws in Exchange Server that it says are being actively exploited by a new Chinese state-sponsored threat actor with the goal of perpetrating data theft. Describing the attacks as "limited and targeted," Microsoft Threat Intelligence Center (MSTIC) said the adversary used these vulnerabilities to access on-premises Exchange servers, in turn granting access to email accounts and paving the way for the installation of additional malware to facilitate long-term access to victim environments. The tech giant primarily attributed the campaign with high confidence to a threat actor it calls HAFNIUM, a state-sponsored hacker collective operating out of China, although it suspects other groups may also be involved. Discussing the tactics, techniques, and procedures (TTPs) of the group for the first time, Microsoft paints HAFNIUM as a "highly skilled and sophisticated actor" that m...

Exactly a month after  patching  an actively exploited zero-day flaw in Chrome, Google today rolled out fixes for yet another zero-day vulnerability in the world's most popular web browser that it says is being abused in the wild. Chrome 89.0.4389.72, released by the search giant for Windows, Mac, and Linux on Tuesday, comes with a total of 47 security fixes, the most severe of which concerns an "object lifecycle issue in audio." Tracked as CVE-2021-21166, the security flaw is one of the two bugs reported last month by Alison Huffman of Microsoft Browser Vulnerability Research on February 11. A separate object lifecycle flaw, also identified in the audio component, was reported to Google on February 4, the same day the stable version of Chrome 88 became available. With no additional details, it's not immediately clear if the two security shortcomings are related. Google acknowledged that an exploit for the vulnerability exists in the wild but stopped short of s...

SunCrypt, a ransomware strain that went on to infect several targets last year, may be an updated version of the QNAPCrypt ransomware, which targeted Linux-based file storage systems, according to new research. "While the two ransomware [families] are operated by distinct different threat actors on the dark web, there are strong technical connections in code reuse and techniques, linking the two ransomware to the same author,"  Intezer Lab  researcher Joakim Kennedy said in a malware analysis published today revealing the attackers' tactics on the dark web. First identified in July 2019,  QNAPCrypt  (or  eCh0raix ) is a ransomware family that was found to target Network Attached Storage (NAS) devices from Taiwanese companies QNAP Systems and Synology. The devices were compromised by brute-forcing weak credentials and exploiting known vulnerabilities with the goal of encrypting files found in the system. The ransomware has since been tracked to a...

A popular jailbreaking tool called "unc0ver" has been updated to support iOS 14.3 and earlier releases, thereby making it possible to unlock almost every single iPhone model using a vulnerability that Apple in January disclosed was actively exploited in the wild. The latest release, dubbed unc0ver v6.0.0, was  released  on Sunday, according to its lead developer Pwn20wnd, expanding its compatibility to jailbreak any device running iOS 11.0 through iOS 14.3 using a kernel vulnerability, including iOS 12.4.9-12.5.1, 13.5.1-13.7, and 14.0-14.3. Tracked as  CVE-2021-1782 , the flaw is a privilege escalation vulnerability in the kernel stemming from a race condition that could cause a malicious application to elevate its privileges. "We wrote our own exploit based on CVE-2021-1782 for #unc0ver to achieve optimal exploit speed and stability," Pwn20wnd  said  in a separate tweet. The vulnerability has since been addressed by Apple as part of its iOS and iPadOS 14...

A framework notorious for delivering a banking Trojan has received a facelift to deploy a wider range of malware, including ransomware payloads. "The  Gootkit  malware family has been around more than half a decade – a mature Trojan with functionality centered around banking credential theft," Sophos researchers Gabor Szappanos and Andrew Brandt  said  in a write-up published today. "In recent years, almost as much effort has gone into improvement of its delivery method as has gone into the NodeJS-based malware itself." Dubbed "Gootloader," the expanded malware delivery system comes amid a surge in the number of infections targeting users in France, Germany, South Korea, and the U.S. First documented in 2014, Gootkit is a Javascript-based malware platform capable of carrying out an array of covert activities, including web injection, capturing keystrokes, taking screenshots, recording videos, as well as email and password theft. Over the years, the ...