The Hacker News - Cybersecurity News and Analysis: Malware

Threat actors are abusing Microsoft Build Engine (MSBuild) to filelessly deliver remote access trojans and password-stealing malware on targeted Windows systems. The actively ongoing campaign is said to have emerged last month, researchers from cybersecurity firm Anomali  said  on Thursday, adding the malicious build files came embedded with encoded executables and shellcode that deploy  backdoors , allowing the adversaries to take control of the victims' machines and steal sensitive information. MSBuild is an open-source build tool for .NET and Visual Studio developed by Microsoft that allows for compiling source code, packaging, testing, deploying applications. In using MSBuild to filelessly compromise a machine, the idea is to stay under the radar and thwart detection, as such malware makes use of a legitimate application to load the attack code into memory, thereby leaving no traces of infection on the system and giving attackers a high level of stealth. As of writing, o

Colonial Pipeline on Thursday restored operations to its entire pipeline system nearly a week following a ransomware infection targeting its IT systems, forcing it to reportedly shell out nearly $5 million to regain control of its computer networks. "Following this restart, it will take several days for the product delivery supply chain to return to normal," the company said in a statement on Thursday evening. "Some markets served by Colonial Pipeline may experience, or continue to experience, intermittent service interruptions during this start-up period. Colonial will move as much gasoline, diesel, and jet fuel as is safely possible and will continue to do so until markets return to normal." The company's official website , however, has been taken offline as of writing with an access denied message "This request was blocked by the security rules." Bloomberg, citing "two people familiar with the transaction," said the company made th

The cybercrime syndicate behind Babuk ransomware has leaked more personal files belonging to the Metropolitan Police Department (MPD) after negotiations with the DC Police broke down, warning that they intend to publish all data if their ransom demands are not met. "The negotiations reached a dead end, the amount we were offered does not suit us, we are posting 20 more personal files on officers, you can download this archive, the password will be released tomorrow. if during tomorrow they do not raise the price, we will release all the data," the gang said in a statement on their data leak site. "You still have the ability to stop it," it added. The Babuk group is said to have  stolen 250GB of data , including investigation reports, arrests, disciplinary actions, and other intelligence briefings. Like other ransomware platforms, DarkSide adheres to a practice called double extortion, which involves demanding money in return for unlocking files and servers en

Adobe has released  Patch Tuesday updates  for the month of May with fixes for multiple vulnerabilities spanning 12 different products, including a zero-day flaw affecting Adobe Reader that's actively exploited in the wild. The list of updated applications includes Adobe Experience Manager , Adobe InDesign , Adobe Illustrator , Adobe InCopy , Adobe Genuine Service , Adobe Acrobat and Reader, Magento , Adobe Creative Cloud Desktop Application, Adobe Media Encoder , Adobe After Effects , Adobe Medium, and Adobe Animate. In a security bulletin, the company  acknowledged  it received reports that the flaw "has been exploited in the wild in limited attacks targeting Adobe Reader users on Windows." Tracked as CVE-2021-28550, the zero-day concerns an arbitrary code execution flaw that could allow adversaries to execute virtually any command on target systems. While the targeted attacks took aim at Windows users of Adobe Reader, the issue affects both Windows and macOS ver

Cybersecurity researchers on Monday disclosed a new Android trojan that hijacks users' credentials and SMS messages to facilitate fraudulent activities against banks in Spain, Germany, Italy, Belgium, and the Netherlands. Called " TeaBot " (or Anatsa), the malware is said to be in its early stages of development, with malicious attacks targeting financial apps commencing in late March 2021, followed by a rash of infections in the first week of May against Belgium and Netherlands banks. The first signs of TeaBot activity emerged in January. "The main goal of TeaBot is stealing victim's credentials and SMS messages for enabling frauds scenarios against a predefined list of banks," Italian cybersecurity and online fraud prevention firm Cleafy said in a Monday write-up. "Once TeaBot is successfully installed in the victim's device, attackers can obtain a live streaming of the device screen (on demand) and also interact with it via Accessibility Serv

The ransomware attack  against Colonial Pipeline's networks has prompted the U.S. Federal Motor Carrier Safety Administration (FMCSA) to issue a  regional emergency declaration  in 17 states and the District of Columbia (D.C.). The declaration provides a temporary exemption to Parts 390 through 399 of the Federal Motor Carrier Safety Regulations ( FMCSRs ), allowing alternate transportation of gasoline, diesel, and refined petroleum products to address supply shortages stemming from the attack. "Such [an] emergency is in response to the unanticipated shutdown of the Colonial pipeline system due to network issues that affect the supply of gasoline, diesel, jet fuel, and other refined petroleum products throughout the Affected States," the directive said. "This Declaration addresses the emergency conditions creating a need for immediate transportation of gasoline, diesel, jet fuel, and other refined petroleum products and provides necessary relief." The states

Colonial Pipeline , which carries 45% of the fuel consumed on the U.S. East Coast, on Saturday said it halted operations due to a ransomware attack,  once again demonstrating  how infrastructure is vulnerable to cyber attacks. "On May 7, the Colonial Pipeline Company learned it was the victim of a cybersecurity attack," the company  said  in a statement posted on its website. "We have since determined that this incident involves ransomware. In response, we proactively took certain systems offline to contain the threat, which has temporarily halted all pipeline operations, and affected some of our IT systems." Colonial Pipeline is the largest refined products pipeline in the U.S., a 5,500 mile (8,851 km) system involved in transporting over 100 million gallons from the Texas city of Houston to New York Harbor. Cybersecurity firm FireEye's Mandiant incident response division is said to be assisting with the investigation, according to reports from  Bloomberg

Cyber operatives affiliated with the Russian Foreign Intelligence Service (SVR) have switched up their tactics in response to previous public disclosures of their attack methods, according to a  new advisory  jointly published by intelligence agencies from the U.K. and U.S. Friday. "SVR cyber operators appear to have reacted [...] by changing their TTPs in an attempt to avoid further detection and remediation efforts by network defenders," the National Cyber Security Centre (NCSC)  said . These include the deployment of an open-source tool called  Sliver  to maintain their access to compromised victims as well as leveraging the ProxyLogon flaws in Microsoft Exchange servers to conduct post-exploitation activities. The development follows the  public attribution  of SVR-linked actors to the  SolarWinds  supply-chain attack last month. The adversary is also tracked under different monikers, such as Advanced Persistent Threat 29 (APT29), the Dukes, CozyBear, and Yttrium. T

An unknown threat actor with the capabilities to evolve and tailor its toolset to target environments infiltrated high-profile organizations in Asia and Africa with an evasive Windows rootkit since at least 2018. Called  'Moriya ,' the malware is a "passive backdoor which allows attackers to inspect all incoming traffic to the infected machine, filter out packets that are marked as designated for the malware and respond to them," said Kaspersky researchers Mark Lechtik and Giampaolo Dedola in a Thursday deep-dive. The Russian cybersecurity firm termed the ongoing espionage campaign  'TunnelSnake .' Based on telemetry analysis, less than 10 victims around the world have been targeted to date, with the most prominent targets being two large diplomatic entities in Southeast Asia and Africa. All the other victims were located in South Asia. The first reports of Moriya emerged last November when Kaspersky said it discovered the stealthy implant in the networks

PC maker Dell has issued an update to fix multiple critical privilege escalation vulnerabilities that went undetected since 2009, potentially allowing attackers to gain kernel-mode privileges and cause a denial-of-service condition. The issues, reported to Dell by researchers from SentinelOne on Dec. 1, 2020, reside in a firmware update driver named "dbutil_2_3.sys" that comes pre-installed on its devices. Hundreds of millions of desktops, laptops, notebooks, and tablets manufactured by the company are said to be vulnerable. "Dell dbutil_2_3.sys driver contains an insufficient access control vulnerability which may lead to escalation of privileges, denial-of-service, or information disclosure. Local authenticated user access is required," Dell  said  in an advisory. All five separate flaws have been assigned the CVE identifier CVE-2021-21551 with a CVSS score of 8.8. A breakdown of the shortcomings is as follows -  CVE-2021-21551: Local Elevation Of Privilege

Researchers on Tuesday disclosed a novel malware that uses a variety of tricks to stay under the radar and evade detection, while stealthily capable of executing arbitrary commands on infected systems. Called 'Pingback,' the Windows malware leverages Internet Control Message Protocol ( ICMP ) tunneling for covert bot communications, allowing the adversary to utilize ICMP packets to piggyback attack code, according to an analysis published today by Trustwave. Pingback (" oci.dll ") achieves this by getting loaded through a legitimate service called  MSDTC  (Microsoft Distributed Transaction Coordinator) — a component responsible for handling database operations that are distributed over multiple machines — by taking advantage of a method called  DLL search order hijacking , which involves using a genuine application to preload a malicious DLL file. Naming the malware as one of the plugins required for supporting  Oracle ODBC  interface in MSDTC is key to the atta

Cybersecurity researchers on Monday disclosed a new malspam campaign distributing a fresh variant of a malware loader called "Buer" written in Rust, illustrating how adversaries are constantly honing their malware toolsets to evade analysis. Dubbed "RustyBuer," the malware is propagated via emails masquerading as shipping notices from DHL Support, and is said to have affected no fewer than 200 organizations across more than 50 verticals since early April. "The new Buer variant is written in Rust, an efficient and easy-to-use programming language that is becoming increasingly popular," Proofpoint researchers  said  in a report shared with The Hacker News. "Rewriting the malware in Rust enables the threat actor to better evade existing Buer detection capabilities." First introduced in August of 2019,  Buer  is a modular malware-as-a-service offering that's sold on underground forums and used as a first-stage downloader to deliver additiona

Iran has been linked to yet another state-sponsored ransomware operation through a contracting company based in the country, according to new analysis. "Iran's Islamic Revolutionary Guard Corps ( IRGC ) was operating a state-sponsored ransomware campaign through an Iranian contracting company called 'Emen Net Pasargard' (ENP)," cybersecurity firm Flashpoint  said  in its findings summarizing three documents leaked by an anonymous entity named Read My Lips or Lab Dookhtegan between March 19 and April 1 via its Telegram channel. Dubbed "Project Signal," the initiative is said to have kickstarted sometime between late July 2020 and early September 2020, with ENP's internal research organization, named the "Studies Center," putting together a list of unspecified target websites. A second spreadsheet validated by Flashpoint explicitly spelled out the project's financial motivations, with plans to launch the ransomware operations in late

A threat actor believed to be working on behalf of Chinese state-sponsored interests was recently observed targeting a Russia-based defense contractor involved in designing nuclear submarines for the naval arm of the Russian Armed Forces. The phishing attack, which singled out a general director working at the Rubin Design Bureau, leveraged the infamous "Royal Road" Rich Text Format (RTF) weaponizer to deliver a previously undocumented Windows backdoor dubbed " PortDoor ," according to Cybereason's Nocturnus threat intelligence team. "Portdoor has multiple functionalities, including the ability to do reconnaissance, target profiling, delivery of additional payloads, privilege escalation, process manipulation static detection antivirus evasion, one-byte XOR encryption, AES-encrypted data exfiltration and more," the researchers  said  in a write-up on Friday. Rubin Design Bureau is a submarine design center located in Saint Petersburg, accounting fo

An "aggressive" financially motivated threat group tapped into a zero-day flaw in SonicWall VPN appliances prior to it being patched by the company to deploy a new strain of ransomware called FIVEHANDS. The group, tracked by cybersecurity firm Mandiant as UNC2447, took advantage of an "improper SQL command neutralization" flaw in the SSL-VPN SMA100 product ( CVE-2021-20016 , CVSS score 9.8) that allows an unauthenticated attacker to achieve remote code execution. "UNC2447 monetizes intrusions by extorting their victims first with FIVEHANDS ransomware followed by aggressively applying pressure through threats of media attention and offering victim data for sale on hacker forums," Mandiant researchers  said . "UNC2447 has been observed targeting organizations in Europe and North America and has consistently displayed advanced capabilities to evade detection and minimize post-intrusion forensics." CVE-2021-20016 is the same  zero-day  that the

Click Studios, the Australian software firm which confirmed a  supply chain attack  affecting its Passwordstate password management application, has warned customers of an ongoing phishing attack by an unknown threat actor. "We have been advised a bad actor has commenced a phishing attack with a small number of customers having received emails requesting urgent action," the company  said  in an updated advisory released on Wednesday. "These emails are not sent by Click Studios." Last week, Click Studios said attackers had employed sophisticated techniques to compromise Passwordstate's update mechanism, using it to drop malware on user computers. Only customers who performed In-Place Upgrades between April 20, 8:33 PM UTC, and April 22, 0:30 AM UTC are said to be affected. While Passwordstate serves about 29,000 customers, the Adelaide-based firm maintained that the total number of impacted customers is very low. It's also urging users to refrain from po

An adversary known for its  watering hole attacks  against government entities has been linked to a slew of newly detected intrusions targeting various organizations in Central Asia and the Middle East. The malicious activity, collectively named "EmissarySoldier," has been attributed to a threat actor called LuckyMouse, and is said to have happened in 2020 with the goal of obtaining geopolitical insights in the region. The attacks involved deploying a toolkit dubbed SysUpdate (aka Soldier) in a number of breached organizations, including government and diplomatic agencies, telecom providers, a TV media company, and a commercial bank. LuckyMouse , also referred to as APT27 and Emissary Panda, is a sophisticated cyberespionage group that has a history of breaching multiple government networks in Central Asia and the Middle East. The actor has also been linked to cyberattacks aimed at transnational organizations such as the International Civil Aviation Organization ( ICAO )

Bad actors with suspected ties to China have been behind a wide-ranging cyberespionage campaign targeting military organizations in Southeast Asia for nearly two years, according to new research. Attributing the attacks to a threat actor dubbed " Naikon APT ," cybersecurity firm Bitdefender laid out the ever-changing tactics, techniques, and procedures adopted by the group, including weaving new backdoors named "Nebulae" and "RainyDay" into their data-stealing missions. The malicious activity is said to have been conducted between June 2019 and March 2021. "In the beginning of the operation the threat actors used Aria-Body loader and Nebulae as the first stage of the attack," the researchers  said . "Starting with September 2020, the threat actors included the RainyDay backdoor in their toolkit. The purpose of this operation was cyberespionage and data theft." Naikon (aka Override Panda, Lotus Panda, or Hellsing) has a track recor

A previously undocumented Linux malware with backdoor capabilities has managed to stay under the radar for about three years, allowing the threat actor behind the operation to harvest and exfiltrate sensitive information from infected systems. Dubbed " RotaJakiro " by researchers from Qihoo 360 NETLAB, the backdoor targets Linux X64 machines, and is so named after the fact that "the family uses rotate encryption and behaves differently for root/non-root accounts when executing." The findings come from an analysis of a  malware sample  it detected on March 25, although early versions appear to have been uploaded to VirusTotal as early as May 2018. A  total  of  four   samples  have been found to date on the database, all of which remain undetected by most anti-malware engines. As of writing, only seven security vendors flag the latest version of the malware as malicious. "At the functional level, RotaJakiro first determines whether the user is root or non-

Threat actors are increasingly adopting  Excel 4.0 documents  as an initial stage vector to distribute malware such as  ZLoader  and Quakbot, according to new research. The findings come from an analysis of 160,000 Excel 4.0 documents between November 2020 and March 2021, out of which more than 90% were classified as malicious or suspicious. "The biggest risk for the targeted companies and individuals is the fact that security solutions still have a lot of problems with detecting malicious Excel 4.0 documents, making most of these slip by conventional signature based detections and analyst written YARA rules," researchers from ReversingLabs said in a report  published today . Excel 4.0 macros (XLM), the precursor to Visual Basic for Applications (VBA), is a legacy feature incorporated in Microsoft Excel for backward compatibility reasons. Microsoft warns in its  support document  that enabling all macros can cause "potentially dangerous code" to run. The eve