NOTES:

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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.

Although Flash Player reached end of life for macOS in 2020, this has not stopped Shlayer operators from continuing to abuse it for malvertising campaigns.

While conducting routine threat hunting for macOS malware on Ad networks, I stumbled upon an unusual Shlayer sample. Upon further analysis, it became clear that this variant was different from the known Shlayer variants such as OSX/Shlayer.D, OSX/Shlayer.E, or ZShlayer. We have dubbed it OSX/Shlayer.F.

As more and more users adopt new versions of Microsoft Office, it is likely that threat actors will turn away from VBA-based malicious documents to other formats such as XLLs or rely on exploiting newly discovered vulnerabilities to launch malicious code.

We found samples of the Raspberry Robin malware spreading in telecommunications and government office systems beginning September. The main payload itself is packed with more than 10 layers for obfuscation and is capable of delivering a fake payload once it detects sandboxing and security analytics tools.

New PolyVice ransomware is likely in use by multiple threat actors building re-branded payloads with the same custom encryption scheme.

Cluster25 researchers analyzed several campaigns (also publicly reported by CERT-AGID) that used phishing emails to spread an InfoStealer malware written in .NET through an infection chain that involves Windows Shortcut (LNK) files and Batch Scripts (BAT). Taking into account the used TTPs and extracted evidence, the attacks seem perpetrated by the same adversary (internally named AUI001).