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Category — Proofpoint
Cyberattackers Exploit Google Sheets for Malware Control in Likely Espionage Campaign

Cyberattackers Exploit Google Sheets for Malware Control in Likely Espionage Campaign

Aug 30, 2024 Malware / Threat Intelligence
Cybersecurity researchers have uncovered a novel malware campaign that leverages Google Sheets as a command-and-control (C2) mechanism. The activity, detected by Proofpoint starting August 5, 2024, impersonates tax authorities from governments in Europe, Asia, and the U.S., with the goal of targeting over 70 organizations worldwide by means of a bespoke tool called Voldemort that's equipped to gather information and deliver additional payloads. Targeted sectors include insurance, aerospace, transportation, academia, finance, technology, industrial, healthcare, automotive, hospitality, energy, government, media, manufacturing, telecom, and social benefit organizations.  The suspected cyber espionage campaign has not been attributed to a specific named threat actor. As many as 20,000 email messages have been sent as part of the attacks. These emails claim to be from tax authorities in the U.S., the U.K., France, Germany, Italy, India, and Japan, alerting recipients about chan...
NSA, FBI Alert on N. Korean Hackers Spoofing Emails from Trusted Sources

NSA, FBI Alert on N. Korean Hackers Spoofing Emails from Trusted Sources

May 03, 2024 Email Security / Malware
The U.S. government on Thursday published a new cybersecurity advisory warning of North Korean threat actors' attempts to send emails in a manner that makes them appear like they are from legitimate and trusted parties. The joint bulletin was published by the National Security Agency (NSA), the Federal Bureau of Investigation (FBI), and the Department of State. "The DPRK [Democratic People's Republic of Korea] leverages these spear-phishing campaigns to collect intelligence on geopolitical events, adversary foreign policy strategies, and any information affecting DPRK interests by gaining illicit access to targets' private documents, research, and communications," the NSA  said . The technique specifically concerns exploiting improperly configured DNS Domain-based Message Authentication, Reporting, and Conformance ( DMARC ) record policies to conceal social engineering attempts. In doing so, the threat actors can send spoofed emails as if...
Cyber Story Time: The Boy Who Cried "Secure!"

Cyber Story Time: The Boy Who Cried "Secure!"

Nov 21, 2024Threat Detection / Pentesting
As a relatively new security category, many security operators and executives I've met have asked us "What are these Automated Security Validation (ASV) tools?" We've covered that pretty extensively in the past, so today, instead of covering the " What is ASV?" I wanted to address the " Why ASV?" question. In this article, we'll cover some common use cases and misconceptions of how people misuse and misunderstand ASV tools daily (because that's a lot more fun). To kick things off, there's no place to start like the beginning. Automated security validation tools are designed to provide continuous, real-time assessment of an organization's cybersecurity defenses. These tools are continuous and use exploitation to validate defenses like EDR, NDR, and WAFs. They're more in-depth than vulnerability scanners because they use tactics and techniques that you'll see in manual penetration tests. Vulnerability scanners won't relay hashes or combine vulnerabilities to further attacks, whic
Cybercriminals Renting WikiLoader to Target Italian Organizations with Banking Trojan

Cybercriminals Renting WikiLoader to Target Italian Organizations with Banking Trojan

Aug 01, 2023 Cyber Attack / Malware
Organizations in Italy are the target of a new phishing campaign that leverages a new strain of malware called  WikiLoader  with an ultimate aim to install a banking trojan, stealer, and spyware referred to as  Ursnif  (aka Gozi). "It is a sophisticated downloader with the objective of installing a second malware payload," Proofpoint  said  in a technical report. "The malware uses multiple mechanisms to evade detection and was likely developed as a malware that can be rented out to select cybercriminal threat actors." WikiLoader is so named due to the malware making a request to Wikipedia and checking that the response has the string "The Free." The enterprise security firm said it first detected the malware in the wild on December 27, 2022, in connection with an intrusion set mounted by a threat actor it tracks as  TA544 , which is also known as Bamboo Spider and Zeus Panda. The campaigns are centered around the use of emails containing either M...
cyber security

Creating, Managing and Securing Non-Human Identities

websitePermisoCybersecurity / Identity Security
A new class of identities has emerged alongside traditional human users: non-human identities (NHIs). Permiso Security's new eBook details everything you need to know about managing and securing non-human identities, and strategies to unify identity security without compromising agility.
Winter Vivern APT Targets European Government Entities with Zimbra Vulnerability

Winter Vivern APT Targets European Government Entities with Zimbra Vulnerability

Mar 31, 2023 Cyber Espionage / APT
The advanced persistent threat (APT) actor known as Winter Vivern is now targeting officials in Europe and the U.S. as part of an ongoing cyber espionage campaign. "TA473 since at least February 2023 has continuously leveraged an unpatched Zimbra vulnerability in publicly facing webmail portals that allows them to gain access to the email mailboxes of government entities in Europe," Proofpoint  said  in a new report. The enterprise security firm is tracking the activity under its own moniker  TA473  (aka UAC-0114), describing it as an adversarial crew whose operations align with that of Russian and Belarussian geopolitical objectives. What it lacks in sophistication, it makes up for in persistence. In recent months, the group has been linked to attacks targeting  state authorities of Ukraine and Poland  as well as  government officials in India, Lithuania, Slovakia, and the Vatican . The NATO-related intrusion wave entails the exploitation of CVE...
Hack-for-Hire Group Targets Travel and Financial Entities with New Janicab Malware Variant

Hack-for-Hire Group Targets Travel and Financial Entities with New Janicab Malware Variant

Dec 10, 2022 Hack-for-Hire / Threat Intelligence
Travel agencies have emerged as the target of a hack-for-hire group dubbed  Evilnum  as part of a broader campaign aimed at legal and financial investment institutions in the Middle East and Europe. The attacks, which took place during 2020 and 2021 and likely went as far back as 2015, involved a revamped variant of a malware called Janicab that leverages a number of public services like WordPress and YouTube as  dead drop resolvers , Kaspersky  said  in a technical report published this week. Janicab infections comprise a diverse set of victims located in Egypt, Georgia, Saudi Arabia, the UAE, and the U.K. The development marks the first time legal organizations in Saudi Arabia have been targeted by this group. Also tracked as DeathStalker, the threat actor is known to deploy  backdoors  like Janicab, Evilnum, Powersing, and PowerPepper to exfiltrate confidential corporate information. "Their interest in gathering sensitive business information ...
Russian Hackers Spotted Targeting U.S. Military Weapons and Hardware Supplier

Russian Hackers Spotted Targeting U.S. Military Weapons and Hardware Supplier

Dec 07, 2022 Password Security / Cyber Threat
A state-sponsored hacking group with links to Russia has been linked to attack infrastructure that spoofs the Microsoft login page of Global Ordnance, a legitimate U.S.-based military weapons and hardware supplier. Recorded Future attributed the new infrastructure to a threat activity group it tracks under the name  TAG-53 , and is broadly known by the cybersecurity community as Blue Callisto , Callisto, COLDRIVER, SEABORGIUM, and TA446. "Based on historical public reporting on overlapping TAG-53 campaigns, it is likely that this credential harvesting activity is enabled in part through phishing," Recorded Future's Insikt Group  said  in a report published this week. The cybersecurity firm said it discovered 38 domains, nine of which contained references to companies like UMO Poland, Sangrail LTD, DTGruelle, Blue Sky Network, the Commission for International Justice and Accountability (CIJA), and the Russian Ministry of Internal Affairs. It's suspected that the t...
Nighthawk Likely to Become Hackers' New Post-Exploitation Tool After Cobalt Strike

Nighthawk Likely to Become Hackers' New Post-Exploitation Tool After Cobalt Strike

Nov 23, 2022
A nascent and legitimate penetration testing framework known as Nighthawk is likely to gain threat actors' attention for its Cobalt Strike-like capabilities. Enterprise security firm Proofpoint said it detected the use of the software in mid-September 2022 by a red team with a number of test emails sent using generic subject lines such as "Just checking in" and "Hope this works2." However, there are no indications that a leaked or cracked version of Nighthawk is being weaponized by threat actors in the wild, Proofpoint researcher Alexander Rausch  said  in a write-up. Nighthawk, launched in December 2021 by a company called MDSec, is analogous to its counterparts  Cobalt Strike ,  Sliver , and  Brute Ratel , offering a red team toolset for adversary threat simulation. It's licensed for £7,500 (or $10,000) per user for a year. "Nighthawk is the most advanced and evasive command-and-control framework available on the market," MDSec  notes . ...
A Microsoft Office 365 Feature Could Help Ransomware Hackers Hold Cloud Files Hostage

A Microsoft Office 365 Feature Could Help Ransomware Hackers Hold Cloud Files Hostage

Jun 16, 2022
A "dangerous piece of functionality" has been discovered in Microsoft 365 suite that could be potentially abused by a malicious actor to mount attacks on cloud infrastructure and ransom files stored on SharePoint and OneDrive. The cloud ransomware attack makes it possible to launch file-encrypting malware to "encrypt files stored on SharePoint and OneDrive in a way that makes them unrecoverable without dedicated backups or a decryption key from the attacker," Proofpoint  said  in a report published today. The infection sequence can be carried out using a combination of Microsoft APIs, command-line interface (CLI) scripts, and PowerShell scripts, the enterprise security firm added. The attack, at its core, hinges on a Microsoft 365 feature called AutoSave that creates copies of older file versions as and when users make edits to a file stored on OneDrive or SharePoint Online. It commences with gaining unauthorized access to a target user's SharePoint Online...
Iranian Hackers Posing as Scholars Target Professors and Writers in Middle-East

Iranian Hackers Posing as Scholars Target Professors and Writers in Middle-East

Jul 13, 2021
A sophisticated social engineering attack undertaken by an Iranian-state aligned actor targeted think tanks, journalists, and professors with an aim to solicit sensitive information by masquerading as scholars with the University of London's School of Oriental and African Studies (SOAS). Enterprise security firm Proofpoint attributed the campaign — called " Operation SpoofedScholars " — to the advanced persistent threat tracked as  TA453 , which is also known by the aliases APT35 (FireEye), Charming Kitten (ClearSky), and Phosphorous (Microsoft). The government cyber warfare group is suspected to carry out intelligence efforts on behalf of the Islamic Revolutionary Guard Corps (IRGC). "Identified targets included experts in Middle Eastern affairs from think tanks, senior professors from well-known academic institutions, and journalists specializing in Middle Eastern coverage," the researchers said in a technical write-up shared with The Hacker News. "T...
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