Cybersecurity Weekly: Exchange malware, Trickbot surges, new Nim malware
Hackers are targeting Microsoft Exchange servers with ransomware. TrickBot takes over after cops kneecap Emotet. Researchers spotted malware written in Nim programming language. All this, and more, in this week’s edition of Cybersecurity Weekly.
1. Hackers targeting Microsoft Exchange servers with ransomware
Intelligence agencies and cybersecurity researchers warn that unpatched Exchange Servers could open the pathway for ransomware infections in the wake of swift escalation of the attacks since last week. Cybercriminals are now leveraging the heavily exploited ProxyLogon Exchange Server flaws to install a new strain of ransomware called DearCry.
2. TrickBot takes over after cops kneecap Emotet
A massive malicious spam campaign, along with the global takedown of Emotet, vaulted the TrickBot trojan to the top of the Check Point’s list of the most popular malware among cybercriminals for February. Following the worldwide law-enforcement effort to take down Emotet in January, cybercriminals pivoted to TrickBot.
3. Researchers spotted malware written in Nim programming language
Cybersecurity researchers unwrapped an interesting email campaign undertaken by a threat actor that has taken to distributing a new malware written in Nim programming language. Dubbed NimzaLoader by researchers, the development marks one of the rare instances of Nim malware discovered in the threat landscape.
4. New browser attack allows tracking users with JavaScript disabled
Researchers discovered a new side-channel that can be reliably exploited to leak information from web browsers that could then be leveraged to track users even when JavaScript is completely disabled. This is a side-channel attack which doesn't require any JavaScript to run, which means script blockers cannot stop it.
5. ProxyLogon PoC exploit released
The U.S. CISA and the FBI on Wednesday issued a joint advisory warning of active exploitation of vulnerabilities in Microsoft Exchange on-premises products by nation-state actors and cybercriminals. The attacks have primarily targeted local governments, academic institutions, non-governmental organizations and businesses.
6. Critical preauth RCE flaw found in F5 Big-IP platform
Last week, F5 Networks published an advisory warning of four critical vulnerabilities impacting multiple products that could result in a denial of service attack and even unauthenticated remote code execution on target networks. The four critical flaws affect BIG-IP versions 11.6 or 12.x and newer.
7. Molson Coors brewing operations disrupted by cyberattack
In a Form-8K filed with the SEC last week, Molson Coors disclosed that they suffered a cyberattack on March 11th, causing significant disruption to their operations, including the production and shipment of beer. Although the company is actively managing this cybersecurity incident, it caused a delay to parts of the company’s business.
8. OVH data center fire likely caused by faulty UPS power supply
Last week, OVH founder and chairman Octave Klaba provided an explanation for the fire that had burned down OVH data centers in Strasbourg, France. OVH customers were advised at the time to enact their disaster recovery plans after the fire had rendered multiple data centers unserviceable, impacting websites around the world.
9. Another Google Chrome zero-day bug found actively exploited in the wild
Google has addressed yet another actively exploited zero-day in Chrome browser, marking the second such fix released by the company within a month. While the update contains a total of five security fixes, the most important flaw rectified by Google concerns a use after free vulnerability in its Blink rendering engine.
10. Malspam campaign uses icon files to delivers NanoCore RAT
Researchers at Trustwave spotted a new malspam campaign that is abusing icon files to trick victims into executing the NanoCore remote access Trojan. The messages claim to be from a purchase manager of organizations that are being spoofed by attackers, and they use an attachment named NEW PURCHASE ORDER.pdf*.zipx which is actually an image binary file.
In this Series
- Cybersecurity Weekly: Exchange malware, Trickbot surges, new Nim malware
- Canada Flipper Zero ban and new RustDoor macOS malware
- AnyDesk hack and iPhone patched kernel flaw
- Tesla Pwn2Own hacks and iOS push alerts abuse
- TeamViewer breach and Atlassian Jira outage
- Moscow ISP revenge hack and Microsoft Sharepoint bug warning
- X verified accounts hack and SpectralBlur macOS malware
- CISA default password alert and SOHO KV-botnet campaign
- New 5G modem flaws and Apple’s data breach report
- Staples cyberattack, Agent Racoon backdoor and other news
- British Library ransomware attack, Windows fingerprint authentication bypass
- Samsung UK data breach and ransomware actor’s SEC complaint
- ICBC ransomware attack and ChatGPT outage
- Boeing Lockbit ransomware attack, Apple’s vulnerability and WhatsApp mods spyware
- Octo Tempest hacking group and new iLeakage attack
- Okta support system breach and Google Ads fake KeePass campaign
- Skype DarkGate malware, Shadow PC breach and AvosLocker ransomware warning
- 23andMe data theft, MGM’s $100M ransomware loss and the Azure VM breach
- Malicious Bing Chat ads and FBI’s dual ransomware warning
- T-Mobile app glitch and fake Booking.com pages
- Airbus data leak, Cisco Webex ad malware and €345 million TikTok fine
- New Apple iMessage exploit and CISA’s Apache RocketMQ warning
- Forever 21 data breach and Android BadBazaar espionage
- Duolingo data leak and the Met Police IT hack
- Discord.io data breach and Ivanti Avalanche vulnerabilities
- UK Electoral Commission hack and Microsoft’s role in China email breach
- Salesforce email zero-day exploit and Microsoft Power Platform criticism
- Airlines disclose pilot data breach and the Microsoft Teams bug
- GravityRAT Android Trojan and new MOVEit Transfer flaw
- University of Manchester hack and Honda API flaws
- MOVEit zero-day exploit and the U.S. iPhone hack accusation
- Daam Android virus and Barracuda zero-day flaw
- TP-Link router exploit and 18-year-old charged with hacking DraftKings accounts
- Discord support hack and Toyota location data leak
- Twitter private tweets bug and Cisco phone router vulnerabilities
- Cisco XSS zero-day flaw and PaperCut vulnerabilities
- 3CX hackers hit critical infrastructure and secondhand routers cause security concerns
- Hyundai data breach and Microsoft’s warning to accountants
- Western Digital cloud breach and the MSI ransomware hack
- TMX loan data breach, Italy bans ChatGPT and WordPress Elementor Pro exploit
- ChatGPT data leak and Gmail message theft by North Korean hackers
- U.S. federal agency hack and the return of FakeCalls Android malware
- Massive AT&T data breach and fake jobs targeting security researchers
- U.S. Marshals service breach and TPM 2.0 security flaws
- Dangerous ChatGPT apps and food giant Dole ransomware attack
- GoDaddy malware installations, record-breaking DDoS attack and the new WhiskerSpy malware
- Reddit’s employees phished, healthcare firms targeted and the new Screenshotter malware
- JD Sports data breached, VMware ESXi servers attacked and the HeadCrab malware
- Yandex source code leaked, 4500+ WordPress sites hacked and the new SwiftSlicer malware
- PayPal accounts breached, Fortinet VPN flaw exploited, and the new Hook malware
- Twitter users’ emails leaked, ChatGPT used to write malware and Slack’s repository breach
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