Exposing Fox Tempest: A malware-signing service operation

In this article 1. Fox Tempest’s role and impact 2. Fox Tempest’s malware signing as a service infrastructure 3. Defending against Fox Tempest-enabled attacks 4. Microsoft Defender detections 5. Indicators of compromise Fox Tempest is a financially motivated threat actor that operates a...

Exposing Fox Tempest: A malware-signing service operation

In this article 1. Fox Tempest’s role and impact 2. Fox Tempest’s malware signing as a service infrastructure 3. Defending against Fox Tempest-enabled attacks 4. Microsoft Defender detections 5. Indicators of compromise Fox Tempest is a financially motivated threat actor that operates a...

grub2 security update

2.02-0.87.0.29.el7.14 - Unregister gettext command on module unload CVE-2025-61662Orabug: 39112125 2.02-0.87.0.27.el7.14 - Fix OOB write in grubnetsearchconfigfile CVE-2025-0624 Orabug: 37770226 - Also adds implementation of grubstrlcpy for clean backport 2.02-0.87.0.26.el7.14 - Replace...

grub2 security update

2.06-114.0.1.el97.1 - Update grub2 dependencies to match new Secure Boot certificate chain of trust Orabug: 37766761 - Fix typo in SBAT metadata Orabug: 37693946 - Allow installation of grub2 only with shim-aa64 that allows booting it Orabug: 37693946 - net/dns: Fix removal of DNS server Orabug:...

CVE-2025-66506

A flaw was found in Fulcio, a free-to-use certificate authority. This vulnerability allows a denial of service DoS due to excessive memory allocation when processing a malicious OpenID Connect OIDC identity token containing numerous period characters...

TamperedChef Malware Spreads via Fake Software Installers in Ongoing Global Campaign

Threat actors are leveraging bogus installers masquerading as popular software to trick users into installing malware as part of a global malvertising campaign dubbed TamperedChef. The end goal of the attacks is to establish persistence and deliver JavaScript malware that facilitates remote acces...

EUVD-2013-0024

Malware in sbrugna...

EUVD-2014-4939

Malware in sbrugna...

Oracle Linux 10 : kernel (ELSA-2025-15662)

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-15662 advisory. 6.12.0-55.32.1.0.1 - nvme-pci: remove two deallocate zeroes quirks Orabug: 37756650 - Add new Oracle Linux Driver Signing key 1 certificate Orabug: 37985782 -...

CVE-2025-23364

A vulnerability has been identified in TIA Administrator All versions V3.0.6. The affected application improperly validates code signing certificates. This could allow an attacker to bypass the check and exceute arbitrary code during installations...

CVE-2025-23364

A vulnerability has been identified in TIA Administrator All versions V3.0.6. The affected application improperly validates code signing certificates. This could allow an attacker to bypass the check and exceute arbitrary code during installations...

CVE-2025-23364

A vulnerability has been identified in TIA Administrator All versions V3.0.6. The affected application improperly validates code signing certificates. This could allow an attacker to bypass the check and exceute arbitrary code during installations...

CVE-2020-0601

A spoofing vulnerability exists in the way Windows CryptoAPI Crypt32.dll validates Elliptic Curve Cryptography ECC certificates.An attacker could exploit the vulnerability by using a spoofed code-signing certificate to sign a malicious executable, making it appear the file was from a trusted,...

kernel security update

5.14.0-503.16.15.OL9 - Disable UKI signing Orabug: 36571828 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug:...

Researchers Uncover Hijack Loader Malware Using Stolen Code-Signing Certificates

Cybersecurity researchers have disclosed a new malware campaign that delivers Hijack Loader artifacts that are signed with legitimate code-signing certificates. French cybersecurity company HarfangLab, which detected the activity at the start of the month, said the attack chains aim to deploy an...

Remote Monitoring & Management software used in phishing attacks

Remote Monitoring & Management RMM software, including popular tools like AnyDesk, Atera, and Splashtop, are invaluable for IT administrators today, streamlining tasks and ensuring network integrity from afar. However, these same tools have caught the eye of cybercriminals, who exploit them to...

Microsoft addresses App Installer abuse

28 October 2024 Update Microsoft disabled the ms-appinstaller URI scheme handler by default in App Installer on 28 December 2023 as a security response to protect customers from attackers’ evolving techniques against previous safeguards for CVE-2021-43890. Microsoft is pleased to announce that we...

LUCR-3: Scattered Spider Getting SaaS-y in the Cloud

LUCR-3 overlaps with groups such as Scattered Spider, Oktapus, UNC3944, and STORM-0875 and is a financially motivated attacker that leverages the Identity Provider IDP as initial access into an environment with the goal of stealing Intellectual Property IP for extortion. LUCR-3 targets Fortune 20...

RedLine/Vidar Abuses EV Certificates, Shifts to Ransomware

In this blog, we investigate how threat actors used information-stealing malware with EV code signing certificates and later delivered ransomware payloads to its victims via the same delivery method...

Old certificate, new signature: Open-source tools forge signature timestamps on Windows drivers

Cisco Talos has observed threat actors taking advantage of a Windows policy loophole that allows the signing and loading of cross-signed kernel mode drivers with signature timestamp prior to July 29, 2015. Actors are leveraging multiple open-source tools that alter the signing date of kernel mode...