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| Src | Date (GMT) | Titre | Description | Tags | Stories | Notes |
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2023-12-04 07:10:47 | Arrêt de cybersécurité du mois: Utilisation de l'IA comportementale pour écraser le détournement de la paie Cybersecurity Stop of the Month: Using Behavioral AI to Squash Payroll Diversion (lien direct) |
This blog post is part of a monthly series exploring the ever-evolving tactics of today\'s cybercriminals. Cybersecurity Stop of the Month focuses on the critical first steps in the attack chain – stopping the initial compromise-in the context of email threats. The series is designed to help you understand how to fortify your defenses to protect people and defend data against emerging threats in today\'s dynamic threat landscape. The first three steps of the attack chain: stop the initial compromise. In our previous posts, we have covered these attack types: Supplier compromise EvilProxy SocGholish E-signature phishing QR code phishing Telephone-oriented attack delivery (TOAD) In this installment we examine a payroll diversion threat that Proofpoint detected during a recent threat assessment. We also cover the typical attack sequence of payroll fraud and explain how Proofpoint uses multiple signals to detect and prevent these threats for our customers. Background Business email compromise (BEC) continues to grow in popularity and sophistication. The 2022 FBI Internet Crime Report notes that BEC attacks cost U.S. businesses $2.7 billion last year. The global figure is no doubt much higher. Ransomware victims, in contrast, lost just $34 million. Payroll diversion is a form of BEC. Typically, employees who have direct access to fulfilling payroll-related requests are prime targets. In these attacks, a bad actor pretends to be an employee who needs to update their direct deposit information. The new information is for an account that the bad actor owns. Once the fraudulent request is complete, the lost funds cannot be retrieved by the business. Payroll diversion fraud isn\'t a new form of BEC, but the frequency of this type of attack is on the rise. Proofpoint continues to see this type of threat getting through the defenses of other email security tools. Across all of our October 2023 threat assessments, we found that more than 400 of these threats got past 12 other email security tools. There are a few reasons why it\'s difficult for a lot of email security tools to detect or remediate these threats. The primary reason is because they don\'t usually carry malicious payloads like attachments or URLs. They also tend to be sent from personal email services-like Google, Yahoo and iCloud-and target specific users. Notably, API-based email security tools that scan for threats post-delivery are the most susceptible to not being able to detect or remediate this type of threat. This partly comes down to how they work. In order for them to be effective, they need security and IT teams to manually populate them with a dictionary of possible display names of all employees, which is a very time-consuming effort that is hard to scale. To avoid this, many organizations simply choose to enable display name prevention for their senior executives only. But bad actors behind payroll diversion don\'t just impersonate executives, they target anyone in the organization who can access corporate funds. In our example below, an attacker took advantage of this exact weakness. The scenario Proofpoint detected a payroll diversion attempt where the attacker posed as a non-executive employee. The email was sent to the director of human resources (HR) at a 300-person company in the energy and utilities industry. The company\'s incumbent email security tool delivered the message, and its API-based post-delivery remediation tool failed to detect and retract it. The threat: How did the attack happen? Here is a closer look at how this payroll diversion scam unfolded: 1. The deceptive message: The attacker sent a request to update their direct deposit information from an account that appeared to be a legitimate employee\'s personal email account. The original malicious message delivered to the recipient\'s inbox. 2. Payroll diversion attack sequence: If the recipient had engaged, the attacker\'s goal would have been to convince them to trans | Ransomware Tool Threat | Yahoo | ★★ |
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2023-10-11 17:00:26 | Google et Yahoo ont défini un court terme pour répondre aux nouvelles exigences d'authentification par e-mail.Es-tu prêt? Google and Yahoo Set a Short Timeline to Meet New Email Authentication Requirements. Are You Ready? (lien direct) |
If you have a Gmail or Yahoo account, you probably know how cluttered your inbox can get with unsolicited email and other email that is clearly trying to defraud you. If you have ever thought to yourself “why can\'t these companies do a better job blocking these fraudulent messages and make it easier for me to receive less unsolicited mail?”, you are not alone. The good news is: Google and Yahoo are doing something about it, and things are about to change. The bad news is: If your company sends email to Google and Yahoo users, you may have some work to do and not a lot of time to do it. Google has announced that starting February 2024, Gmail will require email authentication to be in place when sending messages to Gmail accounts. If you\'re a bulk sender who sends more than 5,000 emails per day to Gmail accounts, you\'ll have even more requirements to meet. You\'ll also need to have a DMARC policy in place, ensure SPF or DKIM alignment, and you\'ll need to make it easy for recipients to unsubscribe (one-click unsubscribe). (You can access Google\'s detailed Email Sender Guidelines here.) Yahoo is rolling out similar requirements. The company recently announced that it will require strong email authentication to be in place by early 2024 to help stem the flow of malicious messages and reduce the amount of low value emails cluttering users\' inboxes. Are you prepared to meet these requirements? Here\'s what you should know. New Google and Yahoo email requirements The new requirements are broken down into two categories. All senders will need to follow the first set. Depending on how much email you send per day, there are also additional rules. Applicable to all senders: Email authentication. This is a critical measure to help prevent threat actors from sending email under the pretense of being from your organization. This tactic is referred to as domain spoofing and, if left unprotected, allows cyber criminals to weaponize sending domains for malicious cyber attacks. SPF is an email authentication protocol designed to prevent email spoofing, a common technique used in phishing attacks and email spam. As an integral part of email cybersecurity, SPF enables the receiving mail server to check whether incoming email comes from an IP address authorized by that domain\'s administrator. DKIM is a protocol that allows an organization to take responsibility for transmitting a message by signing it in a way that mailbox providers can verify. DKIM record verification is made possible through cryptographic authentication. Low SPAM rates. If recipients report your messages as SPAM at a rate that exceeds the new .3% requirement, your messages could be blocked or sent directly to a SPAM Folder. Requirements for senders of more than 5,000 messages per day: SPF and DKIM must be in place. Companies that send to Gmail or Yahoo must have Sender Policy Framework (SPF) or DomainKeys Identified Mail (DKIM) authentication methods implemented. Companies must have a DMARC policy in place. DMARC, which stands for Domain-based Message Authentication, Reporting and Conformance, is an email authentication standard that provides domain-level protection of the email channel. DMARC authentication detects and prevents email spoofing techniques used in phishing, business email compromise (BEC) and other email-based attacks. DMARC builds on the existing standards of Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM). It is the first and only widely deployed technology that can make the header “from” domain trustworthy. The domain owner can publish a DMARC record in the Domain Name System (DNS) and create a policy to tell receivers what to do with emails that fail authentication Messages must pass DMARC alignment. This means that the sending Envelope From domain is the same as the Header From domain, or that the DKIM domain is the same as the Header From domain. Messages must include one-click unsubscribe. For s | Spam Threat | Yahoo | ★★ |
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2023-05-24 12:49:28 | Annonçant le lancement de Guac V0.1 Announcing the launch of GUAC v0.1 (lien direct) |
Brandon Lum and Mihai Maruseac, Google Open Source Security TeamToday, we are announcing the launch of the v0.1 version of Graph for Understanding Artifact Composition (GUAC). Introduced at Kubecon 2022 in October, GUAC targets a critical need in the software industry to understand the software supply chain. In collaboration with Kusari, Purdue University, Citi, and community members, we have incorporated feedback from our early testers to improve GUAC and make it more useful for security professionals. This improved version is now available as an API for you to start developing on top of, and integrating into, your systems.The need for GUACHigh-profile incidents such as Solarwinds, and the recent 3CX supply chain double-exposure, are evidence that supply chain attacks are getting more sophisticated. As highlighted by the | Tool Vulnerability Threat | Yahoo | ★★ |
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2022-10-18 08:41:18 | The benefits of taking an intent-based approach to detecting Business Email Compromise (lien direct) |  By Abhishek Singh.BEC is a multi-stage attack. Adversaries first identify targets, then they establish rapport with the victim before exploiting them for whatever their end goal is. In the case of BEC, a threat actor can impersonate any employee in the organization to trick targets. A policy that checks for authorized email addresses of the sender can prevent BEC attacks. However, scaling the approach for every employee in a large organization is a challenge. Building an executive profile based on email analysis using a machine learning model and scanning emails against that profile will detect BEC. Data collection for building and training machine learning algorithms can take time, though, opening a window of opportunity for threat actors to exploit. Detection of exploitation techniques such as lookalike domains and any differences in the email addresses in the "From" and "Reply-to" fields can also detect BEC messages. However, the final verdict cannot account for the threat actor's intent. The intent-based approach detects BEC and then classifies it into the type of scam. It catches BEC messages, irrespective of whether a threat actor is impersonating a C-level executive or any employee in an organization. Classification based on the type of scam can help identify which segment of an organization was targeted and which employees were being impersonated by the threat actor. The additional information will further assist in better designing preventive features to stop BEC. Business email compromise (BEC) is one of the most financially damaging online crimes. As per the internet crime 221 report, the total loss in 2021 due to BEC is around 2.4 billion dollars. Since 2013, BEC has resulted in a 43 billion dollars loss. The report defines BEC as a scam targeting businesses (not individuals) working with foreign suppliers and companies regularly performing wire transfer payments. Fraudsters carry out these sophisticated scams to conduct the unauthorized transfer of funds. This introduces the challenge of how to detect and block these campaigns as they continue to compromise organizations successfully. There are a variety of approaches to identifying BEC email messages, such as using policy to allow emails from authorized email addresses, detecting exploitation techniques used by threat actors, building profiles by analysis of emails, and validating against the profile to detect BEC. These approaches have a variety of limitations or shortcomings. Cisco Talos is taking a different approach and using an intent-based model to identify and block BEC messages. Before we get too deep into the intent-based model, take a deeper look at the commonly used approaches to block BEC from the simplistic through machine learning (ML) approaches. Policy-based detection The first place to start is with policy-based detection as it is one of the most common and simplistic approaches to blocking BEC campaigns. Let's start by looking at an example of a BEC email. |
Threat Medical Cloud | Yahoo Uber APT 38 APT 37 APT 29 APT 19 APT 15 APT 10 | |
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2022-09-07 15:00:00 | Anomali Cyber Watch: EvilProxy Defeats Second Factor, Ragnar Locker Ransomware Hits Critical Infrastructure, Montenegro Blames Russia for Massive Cyberattack, and More (lien direct) | The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: Critical infrastructure, Crypto mining, Delayed execution, Phishing, Ransomware, Reverse proxy, Russia, and Steganography. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity.
Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed.
Trending Cyber News and Threat Intelligence
EvilProxy Phishing-As-A-Service With MFA Bypass Emerged In Dark Web
(published: September 5, 2022)
Resecurity researchers analyzed EvilProxy, a phishing kit that uses reverse proxy and cookie injection methods to bypass two-factor authentication (2FA). EvilProxy uses extensive virtual machine checks and browser fingerprinting. If the victim passes the checks, Evilproxy acts as a proxy between the victim and the legitimate site that asks for credentials. EvilProxy is being sold as a service on the dark web. Since early May 2022, Evilproxy enables phishing attacks against customer accounts of major brands such as Apple, Facebook, GoDaddy, GitHub, Google, Dropbox, Instagram, Microsoft, Twitter, Yahoo, Yandex, and others.
Analyst Comment: EvilProxy is a dangerous automation tool that enables more phishing attacks. Additionally, EvilProxy targeting GitHub and npmjs accounts increases risks of follow-up supply-chain attacks. Anomali platform has historic EvilProxy network indicators that can help when investigating incidents affecting 2FA. With 2FA bypass, users need to be aware of phishing risks and pay even more attention to domains that ask for their credentials and 2FA codes.
MITRE ATT&CK: [MITRE ATT&CK] Phishing - T1566 | [MITRE ATT&CK] Proxy - T1090 | [MITRE ATT&CK] Supply Chain Compromise - T1195
Tags: EvilProxy, Phishing, Phishing-as-s-service, Reverse proxy, Cookie injection, 2FA, MFA, Supply chain
Ragnar Locker Ransomware Targeting the Energy Sector
(published: September 1, 2022)
Cybereason researchers investigated the Ragnar Locker ransomware that was involved in cyberattack on DESFA, a Greek pipeline company. On August 19, 2022, the Ragnar Locker group listed DESFA on its data leak site. The group has been active since 2019 and it is not the first time it targets critical infrastructure companies with the double-extortion scheme. Their Ragnar Locker ransomware shows the typical abilities of modern ransomware including system information and location collection, deleting shadow copies, identifying processes (antiviruses, backup solutions, IT remote management solutions, and virtual-based software), and encrypting the system with the exception list in mind.
Analyst Comment: Ragnar Locker appears to be an aggressive ransomware group that is not shy attacking critical infrastructure as far as they are not in the Commonwealth of Independent States (Russia and associated countries). Always be on high alert while reading emails, in particular those with attachments, URL redirection, false sense of urgency or poor grammar. Use anti-spam and antivirus protection, and avoid opening email from untrusted or unverified senders. Additionally, it is important to have a comprehensive and teste |
Ransomware Malware Tool Threat Patching Guideline | Yahoo | |
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2022-08-30 08:00:09 | ModernLoader delivers multiple stealers, cryptominers and RATs (lien direct) |  By Vanja SvajcerCisco Talos recently observed three separate, but related, campaigns between March and June 2022 delivering a variety of threats, including the ModernLoader bot, RedLine information-stealer and cryptocurrency-mining malware to victims. The actors use PowerShell, .NET assemblies, and HTA and VBS files to spread across a targeted network, eventually dropping other pieces of malware, such as the SystemBC trojan and DCRAT, to enable various stages of their operations. The attackers' use of a variety of off-the-shelf tools makes it difficult to attribute this activity to a specific adversary.The final payload appears to be ModernLoader, which acts as a remote access trojan (RAT) by collecting system information and deploying various modules. In the earlier campaigns from March, we also observed the attackers delivering the cryptocurrency mining malware XMRig. The March campaigns appeared to be targeting Eastern European users, as the constructor utility we analyzed had predefined script templates written in Bulgarian, Polish, Hungarian and Russian.The actors are attempting to compromise vulnerable web applications to serve malware and deliver threats via files masquerading as fake Amazon gift cards. Technical detailsInitial findingsIn June 2022, Cisco Talos identified an unusual command line execution in our telemetry. The decoded base64 command is below: Initial finding: A command executed on the system.The 31.41.244[.]231 IP is a Russian IP and hosts several other URLs with similar naming conventions. Autostart commandFollowing the discovery of the initial command, we identified two other command lines. They are a result of an autorun registered executable and the execution of a scheduled task. |
Malware Tool Threat | Yahoo | |
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2022-08-23 07:50:00 | Google Uncovers Tool Used by Iranian Hackers to Steal Data from Email Accounts (lien direct) | The Iranian government-backed actor known as Charming Kitten has added a new tool to its malware arsenal that allows it to retrieve user data from Gmail, Yahoo!, and Microsoft Outlook accounts. Dubbed HYPERSCRAPE by Google Threat Analysis Group (TAG), the actively in-development malicious software is said to have been used against less than two dozen accounts in Iran, with the oldest known | Malware Tool Threat Conference | Yahoo APT 35 | |
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2022-07-26 02:00:00 | How a sex worker became a defense contractor employee -- and an insider threat (lien direct) | The headline read, “How an unqualified sex worker allegedly infiltrated a top Air Force lab” and our eyes immediately rolled as we read the bizarre case of Dr. James Gord. He maneuvered a 32-year-old sex worker into a position of trust within Spectral Energies, a government contractor associated with the U.S. Air Force Research Laboratory located at Wright Paterson Air Force Base. His motivation? He wished to keep his sexual liaison sub rosa.Stuff right out of Ripley's Believe It or Not. While we sit and smirk at the ridiculousness of the situation, a deeper dive gives CISOs and their organizations food for thought as we dissect how Gord was able to manipulate his business partner and others to successfully place an individual within his company who had no business being there. Specifically, it underscores the value of background checks on individuals being placed into sensitive roles.To read this article in full, please click here | Threat | Yahoo | |
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2022-06-21 15:03:00 | Anomali Cyber Watch: GALLIUM Expands Targeting Across Telecommunications, Government and Finance Sectors With New PingPull Tool, DragonForce Malaysia OpsPatuk / OpsIndia and More (lien direct) | The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: APT35, CrescentImp, Follina, Gallium, Phosphorous, and Sandworm. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity.
Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed.
Trending Cyber News and Threat Intelligence
Update: The Phish Goes On - 5 Million Stolen Credentials and Counting
(published: June 16, 2022)
PIXM researchers describe an ongoing, large-scale Facebook phishing campaign. Its primary targets are Facebook Messenger mobile users and an estimated five million users lost their login credentials. The campaign evades Facebook anti-phishing protection by redirecting to a new page at a legitimate service such as amaze.co, famous.co, funnel-preview.com, or glitch.me. In June 2022, the campaign also employed the tactic of displaying legitimate shopping cart content at the final page for about two seconds before displaying the phishing content. The campaign is attributed to Colombian actor BenderCrack (Hackerasueldo) who monetizes displaying affiliate ads.
Analyst Comment: Users should check what domain is asking for login credentials before providing those. Organizations can consider monitoring their employees using Facebook as a Single Sign-On (SSO) Provider.
MITRE ATT&CK: [MITRE ATT&CK] Phishing - T1566 | [MITRE ATT&CK] User Execution - T1204
Tags: Facebook, Phishing, Facebook Messenger, Social networks, Mobile, Android, iOS, Redirect, Colombia, source-country:CO, BenderCrack, Hackerasueldo
F5 Labs Investigates MaliBot
(published: June 15, 2022)
F5 Labs researchers describe a novel Android trojan, dubbed MaliBot. Based on re-written SOVA malware code, MaliBot is maintaining its Background Service by setting itself as a launcher. Its code has some unused evasion portions for emulation environment detection and setting the malware as a hidden app. MaliBot spreads via smishing, takes control of the device and monetizes using overlays for certain Italian and Spanish banks, stealing cryptocurrency, and sometimes sending Premium SMS to paid services.
Analyst Comment: Users should be wary of following links in unexpected SMS messages. Try to avoid downloading apps from third-party websites. Be cautious with enabling accessibility options.
MITRE ATT&CK: [MITRE ATT&CK] System Network Configuration Discovery - T1016 | [MITRE ATT&CK] User Execution - T1204
Tags: MaliBot, Android, MFA bypass, SMS theft, Premium SMS, Smishing, Binance, Trust wallet, VNC, SOVA, Sality, Cryptocurrency, Financial, Italy, target-country:IT, Spain, target-country:ES
Extortion Gang Ransoms Shoprite, Largest Supermarket Chain in Africa
(published: June 15, 2022)
On June 10, 2022, the African largest supermarket chain operating in twelve countries, Shoprite Holdings, announced a possible cybersecurity incident. The company notified customers in E |
Ransomware Malware Tool Vulnerability Threat Guideline Conference | Yahoo APT 35 | |
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2021-12-24 11:24:05 | New CoinSpot phishing campaign discovered (lien direct) | A new phishing campaign is targeting CoinSpot cryptocurrency exchange users in order to steal two-factor authentication (2FA) codes. The threat actors are sending emails from a Yahoo email address, which replicates CoinSpot emails, asking recipients to cancel or confirm a withdrawal transaction. The researchers who discovered the campaign said “the threat actor observed here been […] | Threat | Yahoo Yahoo | |
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2020-11-09 12:00:00 | SecTor 2020, Canada\'s Biggest Cybersecurity Event: Day Two (lien direct) |
This blog was written by an independent guest blogger.
Even though SecTor had to be entirely online this year due to our unusual international circumstances, there have been plenty of excellent talks from many experienced cybersecurity professionals. The talks took place over the course of two days, October 21st and 22nd. Last time I covered the talks I attended on day one. Interestingly enough, the talks all had to do with threat detection and analysis. Maybe that’s just what I’m fixated on these days.
The talks I attended on the second day all covered matters businesses must be aware of these days and well into the future. On day two, I learned a lot about how to talk to non-technical executives about security, the unique challenges of cloud security, and the legal implications of cyber threats. Enjoy!
How to Talk to the Board About Cybersecurity
The first talk I attended on the second day was presented by Jeff Costlow, a CISO with nearly 25 years of industry experience. This is the description of the talk from SecTor’s web app:
“With the sudden shift of the global workforce from in-office to remote, IT teams quickly transformed their operations to accommodate the new realities of business — including large-scale adoption of work-from-home technologies, heightened activity on customer-facing networks, and greater use of online services. While these examples of agility allowed business to continue, they also greatly increased the risk of misconfigurations and cyberthreats. Now, it’s looking like they could be here to stay for a while. On top of that, bad actors have wasted no time trying to exploit new vulnerabilities. In the past several weeks, we’ve seen ransomware attacks affect several major organizations. These attacks come on the tail of a surge of attacks across the board brought on during the pandemic, as hackers scanned and took advantage of new workloads, and vulnerable VPN connections and misconfigurations left the gates to the network open.
When attacks like these make headlines, panicked board members have one question for CISOs: how can we be sure that won’t happen to us? Drawing from nearly 25 years of experience in the security industry, Jeff Costlow, CISO at ExtraHop, will share his top strategies for CISOs to lead board-level conversations about risk management amidst the stark new realities of IT.”
When risk enters an organization through devices that the IT department cannot control, securing a network becomes very difficult. Any devices and applications that connect to the network that administrators can’t administrate are considered to be “shadow IT.” This is often a consequence of bring-your-own-device habits, but not always.
Costlow discussed the implications of shadow IT:
“All you have to do is Google or use the search engine of your choice. Search ‘shadow IT horror stories,’ and you will find a ton of these. There is the laptop that runs underneath someone's desk. It turns out it's a business critical piece of software that everyone's using, and it's just running on a laptop under a desk somewhere.
There are also plenty of stories. These are some of my favorites the ones about somebody just wanted to get their job done. And so they started forwarding all their business email to their Google account or their Yahoo account or something like that. Or maybe a personal Dropbox use. One of my favorites is unapproved chat clients. Or an even worse, operating those chat rooms. This is sometimes called ChatOps. We're inside a chat r |
Ransomware Vulnerability Threat Guideline | Yahoo | |
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2020-07-16 05:43:03 | CIA covert operations likely behind attacks against APT34 and FSB (lien direct) | CIA orchestrated dozens of hacking operations against targets worldwide, including APT34 and FSB hacks, states an exclusive report from Yahoo News. In 2018, US President Trump gave to the Central Intelligence Agency (CIA) more powers to conduct covert offensive cyber operations against hostile threat actors, including Iranian and Russian APT groups and intelligence agencies. In […] | Threat | Yahoo APT 34 | |
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2019-10-10 08:37:46 | Smashing Security #149: Falling in love with fraudsters (lien direct) | We take a trip to Staten Island, New York, to hear how a case of cyberstalking resulted in the arrest of 20 alleged mobsters, learn about the nude photo-loving insider threat at Yahoo, and discover how fraudsters might be boosting Match.com’s profits. All this and much more is discussed in the latest edition of the award-winning “Smashing Security” podcast by Graham Cluley and Carole Theriault, joined this week by Ran Levi of “Malicious Life.” | Threat | Yahoo | |
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2019-03-11 03:32:00 | Unintended inferences: The biggest threat to data privacy and cybersecurity (lien direct) | Find out why data privacy breaches and scandals (think Facebook, Marriott, and Yahoo), artificial intelligence, and analytics have implications for how your business manages cybersecurity and privacy. | Threat | Yahoo | |
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2018-12-25 20:14:03 | Hackers launched phishing attacks aimed at bypassing Gmail, Yahoo 2FA at scale (lien direct) | Amnesty International warns of threat actors that are launching phishing attacks aimed at bypassing Gmail, Yahoo 2FA at scale Amnesty International published a report that details how threat actors are able to bypass 2FA authentication that leverages text message as a second factor. Attackers are using this tactic to break into Gmail and Yahoo accounts […] | Threat | Yahoo |
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