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).

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.