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W4SP Stealer Stings Python Developers in Supply Chain Attack

Dark Reading

Threat actors continue to push malicious Python packages to the popular PyPI service, striking with typosquatting, authentic sounding file names, and hidden imports to fool developers and steal their information

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Email Campaign Spreads StrRAT Fake-Ransomware RAT

Threatpost

Microsoft Security discovered malicious PDFs that download Java-based StrRAT, which can steal credentials and change file names but doesn't actually encrypt.

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Fortinet fixes critical vulnerabilities in FortiNAC and FortiWeb

Security Affairs

The two vulnerabilities, tracked as CVE-2022-39952 and CVE-2021-42756 , are respectively an external control of file name or path in Fortinet FortiNAC and a collection of stack-based buffer overflow issues in the proxy daemon of FortiWeb.

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PlugX malware delivered by exploiting flaws in Chinese programs

Security Affairs

The PlugX backdoor has been used since 2008 by multiple China-linked APT groups, including Mustang Panda , Winnti , and APT41 In the attacks observed by ASEC, once exploited the vulnerability, threat actors executed a PowerShell command to create a file named esetservice.exe.

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Fortinet FortiNAC CVE-2022-39952 flaw exploited in the wild hours after the release of PoC exploit

Security Affairs

The two vulnerabilities, tracked as CVE-2022-39952 and CVE-2021-42756 , are respectively an external control of file name or path in Fortinet FortiNAC and a collection of stack-based buffer overflow issues in the proxy daemon of FortiWeb.

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Malicious file analysis – Example 01

Security Affairs

Cyber Security Specialist Zoziel Pinto Freire shows an example of malicious file analysis presented during his lecture on BSides-Vitória 2022. My objective with this series of articles is to show examples of malicious file analysis that I presented during my lecture on BSides-Vitória 2022.

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Qakbot operations continue to evolve to avoid detection

Security Affairs

“Most recently, threat actors have transformed their techniques to evade detection by using ZIP file extensions, enticing file names with common formats, and Excel (XLM) 4.0

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New DeadBolt Ransomware Targets NAT Devices

Schneier on Security

There’s a new ransomware that targets NAT devices made by QNAP: The attacks started today, January 25th, with QNAP devices suddenly finding their files encrypted and file names appended with a.deadbolt file extension.

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Apple Mail Now Blocks Email Trackers

Schneier on Security

Most email newsletters you get include an invisible “image,” typically a single white pixel, with a unique file name. Apple Mail now blocks email trackers by default.

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Experts warn of attacks on sites using flawed Kaswara Modern WPBakery Page Builder Addons

Security Affairs

Threat actors are attempting to exploit an arbitrary file upload vulnerability tracked as CVE-2021-24284. An attacker can trigger the issue to upload malicious PHP files to a website using the vulnerable component, leading to code execution and potentially take over the site.

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STRRAT RAT spreads masquerading as ransomware

Security Affairs

Microsoft warns of a malware campaign that is spreading a RAT dubbed named STRRAT masquerading as ransomware. This RAT is infamous for its ransomware-like behavior of appending the file name extension.crimson to files without actually encrypting them.

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Details of the REvil Ransomware Attack

Schneier on Security

After writing a base-64-encoded payload to a file named agent.crt the dropper executed it. […]. The ransomware dropper Agent.exe is signed with a Windows-trusted certificate that uses the registrant name “PB03 TRANSPORT LTD.”

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FBI published a flash alert on Mamba Ransomware attacks

Security Affairs

Mamba ransomware is one of the first malware that encrypted hard drives rather than files that was detected in public attacks. Mamba leverages a disk-level encryption strategy instead of the conventional file-based one. Payment does not guarantee files will be recovered.

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Hack of DNA website exposes data from 92M accounts

Information Management Resources

MyHeritage received a message from a researcher who unearthed a file named 'myheritage' containing email addresses and encrypted passwords of nearly all of its users on a private server outside the company. Hacking Data security Cyber security Cyber attacks

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Nemty ransomware “LOVE_YOU” malspam campaign

Security Affairs

“Attached to each email is a ZIP archive with a name formatted as with only the #s changing,” reads the advisory published by IBM X-Force IRIS. The ransomware deletes shadow copies of encrypted files to make in impossible any recovery procedure.

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Cuba ransomware affiliate targets Ukraine, CERT-UA warns

Security Affairs

Upon clicking the “DOWNLOAD” button, the executable file named “AcroRdrDCx642200120169_uk_UA.exe” will be downloaded to the machine. Running the above executable will decode and run the “rmtpak.dll” DLL file which is the ROMCOM RAT.

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New COVID19 wiper overwrites MBR making computers unusable

Security Affairs

Upon execution, the wiper drops a series of helper files into a temporary folder, including a BAT file named “coronovirus Installer,” which is responsible for most of the setup work. The BAT file creates a hidden folder named COVID-19, then move the dropped files to it.

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Russia-linked Gamaredon APT targets Ukrainian authorities with new malware

Security Affairs

The attack chain starts with spear-phishing messages with a.RAR attachment named “12-1-125_09.01.2023.” The.RAR archive contains the.LNK file named “Запит Служба безпеки України 12-1-125 від 09.01.2023.lnk” (“Request of the Security Service of Ukraine 12-1-125 dated 09.01.2023.lnk”).

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B1txor20 Linux botnet use DNS Tunnel and Log4J exploit

Security Affairs

The malware was first spotted on February 9, 2022, when 360Netlab’s honeypot system captured an unknown ELF file that was spreading by exploiting the Log4J vulnerability. Researchers uncovered a new Linux botnet, tracked as B1txor20, that exploits the Log4J vulnerability and DNS tunnel.

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New Sophisticated Malware

Schneier on Security

Customized versions of the backdoor that use file names and creation dates that are similar to legitimate files used on a specific infected device. Mandiant is reporting on a new botnet.

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Emsisoft releases free decryptor for the victims of the Diavol ransomware

Security Affairs

Cybersecurity firm Emsisoft released a free decryptor that allows the victims of the Diavol ransomware to recover their files without paying a ransom. Cybersecurity firm Emsisoft has released a free decryption tool to help Diavol ransomware victims recover their files without paying a ransom.

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Vice Society ransomware gang is using a custom locker

Security Affairs

The new variant, dubbed “PolyVice”, was used in a recent attack and appended the file extension “ ViceSociety” to all encrypted files. The malware dropped ransom notes with the file name “AllYFilesAE” in each encrypted directory.

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Russia-linked Armageddon APT targets Ukrainian state organizations, CERT-UA warns

Security Affairs

The messages use the HTML-file “War criminals of the Russian Federation.htm” as attachment. Upon opening the file, a RAR-archive named “Viyskovi_zlochinci_RU.rar” is created. .

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Sony Bravia Smart TVs affected by a critical vulnerability

Security Affairs

“This application handles file names incorrectly when the user uploads a media file. ” The third flaw directory-traversal vulnerability tracked as CVE-2018-16594 that relates to the way the Photo Sharing Plus app handles file names. The application handles file names incorrectly when receiving a user’s input file via uploading a URL. A attacker can upload an arbitrary file with a crafted file name (e.g.: /./)

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Another Ransomware For Linux Likely In Development

Security Affairs

The Uptycs Threat Research team recently observed an Executable and Linkable Format ( ELF ) ransomware which encrypts the files inside Linux systems based on the given folder path. Once the folder path is given, it starts encrypting files present inside the folder.

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0Patch released unofficial security patch for new DogWalk Windows zero-day

Security Affairs

The flaw is a path traversal flaw that can be exploited to save any files to any locations on the file system (in line with the permissions of the current user) before the integrity of the package is checked. diagcab files at all, so users of these services could be potential targets.

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Night Sky, a new ransomware operation in the threat landscape

Security Affairs

Once encrypted a file, the ransomware appends the ‘ nightsky ‘ extension to encrypted file names. The gang has also set up a leak site on the Tor network where it will publish files stolen to the victims that will not pay the ransom.

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China-linked Budworm APT returns to target a US entity

Security Affairs

The binary, which has the default name vf_host.exe, is usually renamed by the attackers in order to masquerade as a more innocuous file. Masqueraded names included securityhealthservice.exe, secu.exe, vfhost.exe, vxhost.exe, vx.exe, and v.exe.”

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APT29 abused the Windows Credential Roaming in an attack against a diplomatic entity

Security Affairs

” The researchers discovered an Arbitrary File Write vulnerability, an attacker can exploit the issue to control the msPKIAccountCredentials LDAP attribute and add a malicious Roaming Token entry where the identifier string contains directory traversal characters.

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RedAlert, LILITH, and 0mega, 3 new ransomware in the wild 

Security Affairs

Cyble researchers warn of three new ransomware operations named Lilith, RedAlert and 0mega targeting organizations worldwide. Researchers from threat intelligence firm Cyble warn of new ransomware gangs that surfaced recently, named Lilith, RedAlert, and 0mega. log), swap files(.vswp),

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China-linked APT41 group targets Hong Kong with Spyder Loader

Security Affairs

To prevent analysis, the malware also cleans up created artifacts, overwriting the content of the dropped wlbsctrl.dll file before deleting it. China-linked threat actors APT41 (a.k.a. Winnti ) targeted organizations in Hong Kong, in some cases remaining undetected for a year.

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Evil Corp rebrands their ransomware, this time is the Macaw Locker

Security Affairs

The Macaw Locker ransomware encrypts victims’ files and append the .macaw macaw extension to the file name of the encrypted files.

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Obtaining Buy-In: Record Creators and Users

The Texas Record

It is important for you to understand their role, department’s functions, and workflow, because you can utilize the information when developing a newly-structured filing system. By considering their workflow you can setup a structure that mimics their functions and by considering their role’s responsibilities you can create a file naming setup that is relatable. ” Remember who utilizes the file structure every day.

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Proactively Protecting Your Sensitive Information for Remote Workers

AIIM

This strategy can help keep project files organized among team members and aid in the disposition of documents once a project has been completed. Discovering content on an employee’s workstation by examining meta-data criteria such as file name, type, or age.

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Atlassian Confluence bug CVE-2022-26134 exploited in cryptocurrency mining campaign

Security Affairs

The script also downloads a binary file named ko, which exploits the PwnKit vulnerability to escalate the privilege to the root user, while the binary file downloads the ap.sh shell script for the next actions.

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Monero Cryptocurrency campaign exploits ProxyLogon flaws

Security Affairs

“The attack begins with a PowerShell command to retrieve a file named win_r.zip from another compromised server’s Outlook Web Access logon path (/owa/auth).”

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Highly Sophisticated Malware Attacks Home and Small Office Routers

eSecurity Planet

The name “ZuoRAT” is based on the Chinese word for “left” (after the actor’s file name, “asdf.a”, which suggests a keyboard progression of the left hand).

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T95 Android TV Box sold on Amazon hides sophisticated malware

Security Affairs

In order to determine if s T95 Android TV Box has been infected, the researcher recommends checking the presence of a folder named: /data/system/Corejava. and a file named.

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Cisco confirms that data leaked by the Yanluowang ransomware gang were stolen from its systems

Security Affairs

“On September 11, 2022, the bad actors who previously published a list of file names from this security incident to the dark web, posted the actual contents of the same files to the same location on the dark web.

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Korean cybersecurity agency released a free decryptor for Hive ransomware

Security Affairs

In February a team of researchers from Kookmin University (South Korea) discovered a flaw in the encryption algorithm used by Hive ransomware that allowed them to decrypt data without knowing the private key used by the gang to encrypt files.