Security-Portal.cz je internetový portál zaměřený na počítačovou bezpečnost, hacking, anonymitu, počítačové sítě, programování, šifrování, exploity, Linux a BSD systémy. Provozuje spoustu zajímavých služeb a podporuje příznivce v zajímavých projektech.

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Phishers Swim Around 2FA in Coinbase Account Heists

Threatpost - 13 min 12 sek zpět
Attackers are spoofing the widely used cryptocurrency exchange to trick users into logging in so they can steal their credentials and eventually their funds.
Kategorie: Hacking & Security

New Orchard Botnet Uses Bitcoin Founder’s Account Info to Generate Malicious Domains

The Hacker News - 1 hodina 44 min zpět
A new botnet named Orchard has been observed using Bitcoin creator Satoshi Nakamoto's account transaction information to generate domain names to conceal its command-and-control (C2) infrastructure. "Because of the uncertainty of Bitcoin transactions, this technique is more unpredictable than using the common time-generated [domain generation algorithms], and thus more difficult to defend Ravie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security

The Benefits of Building a Mature and Diverse Blue Team

The Hacker News - 1 hodina 56 min zpět
A few days ago, a friend and I were having a rather engaging conversation that sparked my excitement. We were discussing my prospects of becoming a red teamer as a natural career progression. The reason I got stirred up is not that I want to change either my job or my position, as I am a happy camper being part of Cymulate's blue team. What upset me was that my friend could not grasp the idea The Hacker Newshttp://www.blogger.com/profile/16801458706306167627noreply@blogger.com
Kategorie: Hacking & Security

Researchers Uncover Classiscam Scam-as-a-Service Operations in Singapore

The Hacker News - 2 hodiny 2 min zpět
A sophisticated scam-as-a-service operation dubbed Classiscam has now infiltrated into Singapore, more than 1.5 years after expanding to Europe. "Scammers posing as legitimate buyers approach sellers with the request to purchase goods from their listings and the ultimate aim of stealing payment data," Group-IB said in a report shared with The Hacker News. The cybersecurity firm called the Ravie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security

Brave vs. Tor: Which Browser Offers More Security and Privacy?

LinuxSecurity.com - 4 hodiny 39 min zpět
Brave and Tor are two of the most secure web browsers you can use, but which one comes out on top?
Kategorie: Hacking & Security

Tenhle čip proslavila omezení spojená s Windows 11. Co byste měli vědět o TPM

Zive.cz - bezpečnost - 4 hodiny 54 min zpět
** Windows 11 budou požadovat, aby měl počítač TPM ** K čemu slouží, jak zjistit, zda jej v počítači máte? **Jak jeho případnou absenci vyřešit?
Kategorie: Hacking & Security

Targeted attack on industrial enterprises and public institutions

Kaspersky Securelist - 7 hodin 39 min zpět

In January 2022, Kaspersky ICS CERT experts detected a wave of targeted attacks on military industrial complex enterprises and public institutions in several countries. In the course of our research, we were able to identify over a dozen of attacked organizations. The attack targeted industrial plants, design bureaus and research institutes, government agencies, ministries and departments in several East European countries (Belarus, Russia, and Ukraine), as well as Afghanistan.

The attackers were able to penetrate dozens of enterprises and even hijack the IT infrastructure of some, taking control of systems used to manage security solutions.

An analysis of information obtained while investigating the incidents indicates that cyberespionage was the goal of this series of attacks.

Initial infection

The attackers penetrated the enterprise network using carefully crafted phishing emails, some of which use information that is specific to the organization under attack and is not publicly available. This could indicate that the attackers did preparatory work in advance (they may have obtained the information in earlier attacks on the same organization or its employees, or on other organizations or individuals associated with the victim organization).

Microsoft Word documents attached to the phishing emails contained malicious code that exploits the CVE-2017-11882 vulnerability. The vulnerability enables an attacker to execute arbitrary code (in the attacks analyzed, the main module of the PortDoor malware) without any additional user activity.

An earlier series of attacks in which the PortDoor malware was also used was described by Cybereason experts. A new version of PortDoor was identified in the course of our research.

Initial infection of a system

After being launched, PortDoor collects general information on the infected system and sends it to the malware command-and-control (CnC) server. In cases where an infected system is of interest to the attackers, they use the PortDoor functionality to control the system remotely and install additional malware.

Additional malware

The attackers used five different backdoors at the same time – probably to set up redundant communication channels with infected systems in case one of the malicious programs was detected and removed by a security solution. The backdoors used provide extensive functionality for controlling infected systems and collecting confidential data.

Of the six backdoors identified on infected systems, five (PortDoor, nccTrojan, Logtu, Cotx, and DNSep) have been used earlier in attacks attributed by other researchers to APT TA428. The sixth backdoor is new and has not been observed in other attacks.

Lateral movement

After gaining a foothold on the initial system, the attackers attempt to spread the malware to other computers on the enterprise network. To gain access to those computers, the attackers use network scanning results, as well as user credentials stolen earlier.

The Ladon hacking utility (which is popular in China) is used as the main lateral movement tool. It combines network scanning, vulnerability search and exploitation, password attack, and other functionality. The attackers also extensively use standard utilities that are part of the Microsoft Windows operating system.

The attack’s final stage involves hijacking the domain controller and gaining full control of all of the organization’s workstations and servers.

The attackers used DLL hijacking and process hollowing techniques extensively in the attack to prevent security software from detecting the malware.

Data theft

After gaining domain administrator privileges, the attackers searched for and exfiltrated documents and other files that contained the attacked organization’s sensitive data to their servers hosted in different countries. These servers were also used as stage one CnC servers.

The attackers compressed stolen files into encrypted and password-protected ZIP archives. After receiving the data collected, the stage one CnC servers forwarded the archives received to a stage two server located in China.

Transfer of stolen data from infected systems

Who is behind the attack?

Significant overlaps in tactics, techniques, and procedures (TTPs) have been observed with APT TA428 activity.

The research identified malware and CnC servers previously used in attacks attributed by other researchers to TA428 APT group.

Some indirect evidence also supports our conclusion.

We believe that the series of attacks that we have identified is highly likely to be an extension of a known campaign that has been described in Cybereason, DrWeb, and NTTSecurity research and has been attributed with a high degree of confidence to APT TA428 activity.

Conclusion

The findings of our research show that spear phishing remains one of the most relevant threats to industrial enterprises and public institutions. In the course of the attack, the attackers used mostly known backdoor malware, as well as standard lateral movement techniques and methods designed to evade detection by security solutions.

The attack series that we have identified is not the first in the campaign. Given that the attackers have had some success, we believe it is highly likely that similar attacks will occur again in the future. Industrial enterprises and public institutions should do a great deal of work to successfully thwart such attacks.

Technical details of the attacks, as well as recommendations and indicators of compromise, can be found in the full public version of the article on the Kaspersky ICS CERT website.

A private version of the article has been published on Kaspersky Threat Intelligence.

We are not wrapping up our investigation as yet and will release information on new findings as they appear. For more information, you can contact ics-cert@kaspersky.com.

Češi budou bojovat proti kyberútokům, které šifrují data

Novinky.cz - bezpečnost - 7 hodin 1 min zpět
V Česku vznikla nová softwarová firma Callisto Security, která bude poskytovat služby při řešení hackerských útoků. Společnost patřící do skupiny Invictus Development podnikatele Vladimíra Vencálka se chce zaměřit hlavně na útoky takzvaného typu ransomware, které šifrují data a následně požadují výkupné. Podobným útokům nedávno čelily i státní instituce jako například Ředitelství silnic a dálnic (ŘSD).
Kategorie: Hacking & Security

Meta Cracks Down on Cyber Espionage Operations in South Asia Abusing Facebook

The Hacker News - 8 hodin 39 min zpět
Facebook parent company Meta disclosed that it took action against two espionage operations in South Asia that leveraged its social media platforms to distribute malware to potential targets. The first set of activities is what the company described as "persistent and well-resourced" and undertaken by a hacking group tracked under the moniker Bitter APT (aka APT-C-08 or T-APT-17) targeting Ravie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security

New IoT RapperBot Malware Targeting Linux Servers via SSH Brute-Forcing Attack

The Hacker News - 7 Srpen, 2022 - 06:29
A new IoT botnet malware dubbed RapperBot has been observed rapidly evolving its capabilities since it was first discovered in mid-June 2022. "This family borrows heavily from the original Mirai source code, but what separates it from other IoT malware families is its built-in capability to brute force credentials and gain access to SSH servers instead of Telnet as implemented in Mirai," Ravie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security

Hackers Exploit Twitter Vulnerability to Exposes 5.4 Million Accounts

The Hacker News - 6 Srpen, 2022 - 11:10
Twitter on Friday revealed that a now-patched zero-day bug was used to link phone numbers and emails to user accounts on the social media platform. "As a result of the vulnerability, if someone submitted an email address or phone number to Twitter's systems, Twitter's systems would tell the person what Twitter account the submitted email addresses or phone number was associated with, if any," Ravie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security

Slack Resets Passwords After a Bug Exposed Hashed Passwords for Some Users

The Hacker News - 6 Srpen, 2022 - 10:44
Slack said it took the step of resetting passwords for about 0.5% of its users after a flaw exposed salted password hashes when creating or revoking shared invitation links for workspaces. "When a user performed either of these actions, Slack transmitted a hashed version of their password to other workspace members," the enterprise communication and collaboration platform said in an alert on 4thRavie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security

Traffic Light Protocol for cybersecurity responders gets a revamp

Sophos Naked Security - 5 Srpen, 2022 - 18:57
Traffic lights make a handy global metaphor for denoting the sensitivity of cybersecurity threat data - three colours that everyone knows.

Iranian Hackers Likely Behind Disruptive Cyberattacks Against Albanian Government

The Hacker News - 5 Srpen, 2022 - 16:37
A threat actor working to further Iranian goals is said to have been behind a set of damaging cyberattacks against Albanian government services in mid-July 2022. Cybersecurity firm Mandiant said the malicious activity against a NATO state represented a "geographic expansion of Iranian disruptive cyber operations." The July 17 attacks, according to Albania's National Agency of Information SocietyRavie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security

Open Redirect Flaw Snags Amex, Snapchat User Data

Threatpost - 5 Srpen, 2022 - 15:17
Separate phishing campaigns targeting thousands of victims impersonate FedEx and Microsoft, among others, to trick victims.
Kategorie: Hacking & Security

Windows Subsystem for Linux 0.65.1 is now live for all Insiders

LinuxSecurity.com - 5 Srpen, 2022 - 13:54
Windows Subsystem for Linux (WSL) is a powerful piece of software wizardry that allows users to run GNU/Linux environments directly in Windows without requiring virtual machines (VMs) or dual-boot configurations. Available for both Windows 10 and Windows 11 , it's a very handy utility, especially for cross-platform development and testing. Microsoft regularly updates WSL with new features and capabilities. Today, it has announced WSL version 0.65.1 for Insiders.
Kategorie: Hacking & Security

Emergency Alert System Flaws Could Let Attackers Transmit Fake Messages

The Hacker News - 5 Srpen, 2022 - 12:24
The U.S. Department of Homeland Security (DHS) has warned of critical security vulnerabilities in Emergency Alert System (EAS) encoder/decoder devices. If left unpatched, the issues could allow an adversary to issue fraudulent emergency alerts over TV, radio, and cable networks. The August 1 advisory comes courtesy of DHS' Federal Emergency Management Agency (FEMA). CYBIR security researcher KenRavie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security

Resolving Availability vs. Security, a Constant Conflict in IT

The Hacker News - 5 Srpen, 2022 - 12:20
Conflicting business requirements is a common problem – and you find it in every corner of an organization, including in information technology. Resolving these conflicts is a must, but it isn’t always easy – though sometimes there is a novel solution that helps. In IT management there is a constant struggle between security and operations teams. Yes, both teams ultimately want to have secure The Hacker Newshttp://www.blogger.com/profile/16801458706306167627noreply@blogger.com
Kategorie: Hacking & Security

A Growing Number of Malware Attacks Leveraging Dark Utilities 'C2-as-a-Service'

The Hacker News - 5 Srpen, 2022 - 12:06
A nascent service called Dark Utilities has already attracted 3,000 users for its ability to provide command-and-control (C2) services with the goal of commandeering compromised systems. "It is marketed as a means to enable remote access, command execution, distributed denial-of-service (DDoS) attacks and cryptocurrency mining operations on infected systems," Cisco Talos said in a report shared Ravie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security

CISA Adds Zimbra Email Vulnerability to its Exploited Vulnerabilities Catalog

The Hacker News - 5 Srpen, 2022 - 07:54
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a recently disclosed high-severity vulnerability in the Zimbra email suite to its Known Exploited Vulnerabilities Catalog, citing evidence of active exploitation. The issue in question is CVE-2022-27924 (CVSS score: 7.5), a command injection flaw in the platform that could lead to the execution of arbitrary Ravie Lakshmananhttp://www.blogger.com/profile/10975661172932160797noreply@blogger.com
Kategorie: Hacking & Security
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