FireEye Breach Detection Guidance

Update 12/14: Cisco Talos has implemented additional blocks in relation to the supply chain attack on SolarWinds® Orion® Platform. The U.S. Cybersecurity and Infrastructure Security Agency has issued Emergency Directive 21-01 due to this campaign. Talos is continuing to investigate this matter. I...

SolarWinds Orion Platform 2019.4 HF5 / 2020.2.x < 2020.2.1 SUNBURST Malware Backdoor

The version of SolarWinds Orion Platform running on the remote host is 2019.4 HF5 or 2020.2.1 prior to 2020.2.1 HF2. It is, therefore, affected by a malware backdoor known as SUNBURST. The file SolarWinds.Orion.Core.BusinessLayer.dll that is included in these versions is known to contain a backdo...

TAU Threat Advisory: Imminent Ransomware threat to U.S. Healthcare and Public Health Sector

The Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency CISA issued a joint alert this week with regards to an imminent cybercrime threat to US hospitals and healthcare providers. The alert was coauthored by CISA, the Federal Bureau of Investigation FBI, and the...

Microsoft Patch Tuesday September 2020: Zerologon and other exploits, RCEs in SharePoint and Exchange

I would like to start this post by talking about Microsoft vulnerabilities, which recently turned out to be much more serious than it seemed at first glance. Older Vulnerabilities with exploits "Zerologon" Netlogon RCE CVE-2020-1472 One of them is, of course, the Netlogon vulnerability from the...

Zerologon Attacks Against Microsoft DCs Snowball in a Week

A spike in exploitation attempts against the Microsoft vulnerability CVE-2020-1472, known as the Zerologon bug, continues to plague businesses. That’s according to researchers from Cisco Talos, who warned that cybercriminals are redoubling their efforts to trigger the elevation-of-privilege bug i...

Detecting and Preventing Critical ZeroLogon Windows Server Vulnerability

If you're administrating Windows Server, make sure it's up to date with all recent patches issued by Microsoft, especially the one that fixes a recently patched critical vulnerability that could allow unauthenticated attackers to compromise the domain controller. Dubbed 'Zerologon' CVE-2020-1472...

DHS Issues Dire Patch Warning for ‘Zerologon’

Federal agencies that haven’t patched their Windows Servers against the ‘Zerologon’ vulnerability by Monday Sept. 21 at 11:59 pm EDT are in violation of a rare emergency directive issued by the Secretary of Homeland Security. With only hours until the deadline for the directive, issued on Friday,...

CISA Releases Emergency Directive on Microsoft Windows Netlogon Remote Protocol

The Cybersecurity and Infrastructure Security Agency CISA has released Emergency Directive ED 20-04 addressing a critical vulnerability— CVE-2020-1472—affecting Microsoft Windows Netlogon Remote Protocol. An unauthenticated attacker with network access to a domain controller could exploit this...

CISA Emergency Directive Orders Immediate Fix of Windows DNS Server Bug

The U.S. Cybersecurity and Infrastructure Security Agency CISA is ordering all federal executive branch offices to apply a patch for a wormable Windows Server bug within 24 hours, warning of a “high potential for compromise of agency information systems.” In an Emergency Directive, the Department...

CISA Releases Emergency Directive on Critical Microsoft Vulnerability

The Cybersecurity and Infrastructure Security Agency CISA has released Emergency Directive 20-03 addressing a critical vulnerability—CVE-2020-1350—affecting all versions of Windows Server with the Domain Name System DNS role enabled. A remote attacker could exploit this vulnerability to take...

CISA Releases Emergency Directive and Activity Alert on Critical Microsoft Vulnerabilities

The Cybersecurity and Infrastructure Security Agency CISA has released an Emergency Directive and Activity Alert addressing critical vulnerabilities affecting Windows CryptoAPI, Windows Remote Desktop Gateway RD Gateway, and Windows Remote Desktop Client. A remote attacker could exploit these...

'Karkoff' Is the New 'DNSpionage' With Selective Targeting Strategy

The cybercriminal group behind the infamous DNSpionage malware campaign has been found running a new sophisticated operation that infects selected victims with a new variant of the DNSpionage malware. First uncovered in November last year, the DNSpionage attacks used compromised sites and crafted...

CISA Releases Blog on Emergency Directive

The U.S. Department of Homeland Security DHS Cybersecurity and Infrastructure Security Agency CISA Director Christopher Krebs, has released a blog, titled “Why CISA Issued Our First Emergency Directive,” to explain considerations in issuing Emergency Directive 19-01 on January 22, 2019. The...

U.S. Gov Issues Urgent Warning of DNS Hijacking Attacks

The Department of Homeland Security is ordering all federal agencies to urgently audit Domain Name System DNS security for their domains in the next 10 business days. The department’s rare “emergency directive,” issued Tuesday, warned that multiple government domains have been targeted by DNS...

DHS Orders U.S. Federal Agencies to Audit DNS Security for Their Domains

The U.S. Department of Homeland Security DHS has today issued an "emergency directive" to all federal agencies ordering IT staff to audit DNS records for their respective website domains, or other agency-managed domains, within next 10 business days. The emergency security alert came in the wake ...

CISA Emergency Directive on DNS Infrastructure Tampering

The U.S. Department of Homeland Security DHS Cybersecurity and Infrastructure Security Agency CISA issued an emergency directive to address ongoing incidents associated with global Domain Name System DNS infrastructure tampering. CISA is aware of multiple executive branch agency domains that were...