QiAnXin Threat Intelligence Center's RedDrip team tracked the relevant events and discovered a batch of attack samples exploiting the CVE-2023-23397 vulnerability. After analyzing these samples and C2 servers, we believe that the exploitation of this vulnerability in the wild has been ongoing since March 2022. In the later stages of the attack, the attackers used Ubiquiti-EdgeRouter routers as C2 servers, and the victims of the attack activity were from multiple countries.

* Exfiltrated Russian-written documents provide insights into cyber offensive tool projects contracted by Vulkan private firm for the Russian Ministry of Defense. * Scan-AS is a database used to map adversary networks in parallel or prior to cyber operations. Scan-AS is a subsystem of a wider management system used to conduct, manage and capitalize results of cyber operations. * Amezit is an information system aimed at managing the information flow on a limited geographical area. It allows communications interception, analysis and modification, and can create wide information campaigns through social media, email, altered websites or phone networks.

The 3CX VoIP Desktop Application has been compromised to deliver malware via legitimate 3CX updates. Huntress has been investigating this incident and working to validate and assess the current supply chain threat to the security community.

QakBot is a banking trojan that has been evolving since its first version was discovered in 2008. According to the 2022 report published by CISA, it was one of the most active variants in 2021, and during 2022 and so far in 2023 it has remained quite active. Taking a brief look at the latests news of QakBot it has been updating its tactics constantly, for example, using a Windows zero-day to avoid displaying the MoTW or the most recent one, using OneNote files to drop QakBot. In this case we are particularly interested in the anti-analysis techniques used by QakBot during the early stages of its execution. These techniques can make malware analysis harder if they are not known, so learning to identify and bypass them is essential to get to see the malware’s operation at its full potential. Furthermore, there are techniques that can replicate / adopt different types of malware, so knowking them opens the door to the study of different samples.

Dive into the analysis and exploitation of a vulnerability in the Windows Ancillary Function Driver for Winsock for Local Privilege Escalation on Windows 11. More from X-Force Red experts.

The high-profile botnet, focused on mining cryptocurrency, is back with new Linux versions.

Threat actors are taking advantage of Microsoft OneNote's ability to embed files and use social engineering techniques, such as phishing emails and lures inside the OneNote document, to get unsuspecting users to download and open malicious files.

We detail the update that advanced persistent threat (APT) group Iron Tiger made on the custom malware family SysUpdate. In this version, we also found components that enable the malware to compromise Linux systems.

A cryptominer that uses the Invisible Internet protocol, Honkbox variants could still be evading some detection solutions.

Lumma Stealer sellers use the name “LummaC” on an underground forum called XSS, which is based in Russia. The seller has been actively promoting the malware since April 2022. In August of that year…

Menlo Labs has uncovered an unknown threat actor leveraging an evasive threat campaign distributed via Discord featuring the PureCrypter downloader and targeting government entities.

* TA569 leverages many types of injections, traffic distribution systems (TDS), and payloads including, but not limited to, SocGholish. * In addition to serving as an initial access broker, these additional injects imply TA569 may be running a pay-per-install (PPI) service * TA569 may remove injections from compromised websites only to later re-add them to the same websites. * There are multiple opportunities for defense against TA569: educating users about the activity, using Proofpoint’s Emerging Threats ruleset to block the payload domains, and blocking .js files from executing in anything but a text editor.

Executive Summary The CYFIRMA Research team has provided a preliminary analysis of a new post- exploitation framework called EXFILTRATOR-22 a.k.a....

ThreatLabz observed a new campaign targeting a Government organization in which the threat actors utilized a new Command & Control (C2) framework named Havoc

On 02 February 2023, an alert triggered in a Huntress-protected environment. At first glance, the alert itself was fairly generic - a combination of certutil using the urlcache flag to retrieve a remote resource and follow-on scheduled task creation - but further analysis revealed a more interesting set of circumstances. By investigating the event in question and pursuing root cause analysis (RCA), Huntress was able to link this intrusion to a recently-announced vulnerability as well as to a long-running post-exploitation framework linked to prominent ransomware groups.

Sliver is an open-source penetration testing tool developed in the Go programming language. Cobalt Strike and Metasploit are major examples of penetration testing tools used by many threat actors, and various attack cases involving these tools have been covered here on the ASEC blog. Recently, there have been cases of threat actors using Sliver in addition to Cobalt Strike and Metasploit. The ASEC (AhnLab Security Emergency response Center) analysis team is monitoring attacks against systems with either unpatched vulnerabilities or misconfigured settings. During this process, we have recently discovered a Sliver backdoor being installed through what is presumed to be vulnerability exploitation on certain software. Not only did threat actors use the Sliver backdoor, but they also used the BYOVD (Bring Your Own Vulnerable Driver) malware to incapacitate security products and install reverse shells.

NOTES: Zip files are password-protected. If you don't know the password, see the "about" page of this website. IOCs are listed on this page below all of the images.

Cyble analyzes 'InTheBox' as part of its thorough research on Web Injects and their role in targeting Android Banking applications worldwide,

PlugX remains an active threat. A newly discovered variant infects USB devices and a similar variant makes copies of PDF and Microsoft Word files.

The Uptycs threat research team discovered a Titan stealer malware campaign, which is marketed and sold by a threat actor (TA) through a Telegram channel.

While tracking some prevalent commodity malware threat actors, Talos observed the popularization of malicious LNK files as their initial access method to download and execute payloads. A closer look at the LNK files illustrates how their metadata could be used to identify and track new campaigns.

Summary Three key takeaways from our analysis of Vidar infrastructure: Russian VPN gateways are potentially providing anonymity for Vidar operators / customers, making it more challenging for analysts to have a complete overview of this threat. These gateways now appear to be migrating to Tor. Vidar operators appear to be expanding their infrastructure, so analysts need to keep them in their sights. We expect a new wave of customers and as a result, an increase of campaigns in the upcoming weeks

We discuss the Batloader malware campaigns we observed in the last quarter of 2022, including our analysis of Water Minyades-related events (This is the intrusion set we track behind the creation of Batloader).

We recently discovered ransomware, which performs MSDTC service DLL Hijacking to silently execute its payload. We have named this ransomware CatB, based on the contact email that the ransomware group uses. The sample was first uploaded to VT on November 23, 2022 and tagged by the VT community as a possible variant of the Pandora Ransomware. The assumed connection to the Pandora Ransomware was due to some similarities between the CatB and Pandora ransom notes. However, the similarities pretty much end there. The CatB ransomware implements several anti-VM techniques to verify execution on a “real machine”, followed by a malicious DLL drop and DLL hijacking to evade detection.

The ASEC analysis team recently discovered that a Linux malware developed with Shc has been installing a CoinMiner. It is presumed that after successful authentication through a dictionary attack on inadequately managed Linux SSH servers, various malware were installed on the target system. Among those installed were the Shc downloader, XMRig CoinMiner installed through the former, and DDoS IRC Bot, developed with Perl.

A comprehensive analysis of the year's new malware

New YouTube Bot Malware Spotted Stealing User’s Sensitive Information

Italians Users Targeted By PureLogs Stealer Through Spam Campaigns

PrivateLoader is an active malware in the loader market, used by multiple threat actors to deliver various payloads, mainly information stealer. Since our previous investigation, we keep tracking the malware to map its ecosystem and delivered payloads. Starting from this tria.ge submission, we recognized a now familiar first payload, namely PrivateLoader. However, the dropped stealer was not part of our stealer growing collection, notably including RedLine or Raccoon. Eventually SEKOIA.IO realised it was a new undocumented stealer, known as RisePro. This article aims at presenting SEKOIA.IO RisePro information stealer analysis.

In this blog post we will dive into the latest Microsoft Exchange 0-day vulnerability, dubbed #ProxyNotShell, how it relates to other Exchange vulnerabilities and finally demonstrate how ProxyRelay can combined with ProxyNotShell, even with Extended Protection and IIS rewrite rules enabled.