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SolarWinds SUNBURST Backdoor: Inside the Stealthy APT Campaign
Imagine if everyone with an Amazon Echo in their home had to assume it’s been unlocking their doors and letting a thief inside for the past 6 months. How would you...
November 2020 Malware Trends Report
This Malware Trends Report – November 2020 is a monthly round-up from the Varonis Forensics Team documenting activity observed while responding to incidents, performing forensics, and reverse engineering malware samples....
Threat Update #12 – Does Zerologon Change the Game?
Cybercriminals are using the Zerologon exploit to fast track lateral movement and privilege escalation. If left unpatched, the exploit lets attackers use the password of the primary domain controller to...
October 2020 Malware Trends Report
This report is a monthly round-up from the Varonis Forensics Team documenting activity observed while responding to incidents, performing forensics, and reverse engineering malware samples. This report is intended to...
Threat Update #10
An alert notifies you that something suspicious is going on. Minutes matter, so you call the Varonis Incident Response team to help. Security investigators must act fast, but where do...
Exploiting BGInfo to Infiltrate a Corporate Network
Executive Summary There is a remote code execution attack vector within BGInfo. A clever attacker can embed a path to a malicious script within a BGInfo config file (.bgi). If...
Azure Skeleton Key: Exploiting Pass-Through Auth to Steal Credentials
EDIT: Security researcher Adam Chester had previously written about Azure AD Connect for Red Teamers, talking about hooking the authentication function. Check out his awesome write-up here. Should an attacker...
A Queen’s Ransom: Varonis Uncovers Fast-Spreading “SaveTheQueen” Ransomware
A new strain of ransomware encrypts files and appends them with the extension, “.SaveTheQueen,” and propagates using the SYSVOL share on Active Directory Domain Controllers. Our customers encountered this malware...
Varonis Uncovers Another New Strain of the Qbot Banking Malware
We have discovered and reverse engineered another new strain of Qbot, a sophisticated, well-known type of malware that collects sensitive data, such as browser cookies, digital certificate information, keystrokes, credentials,...
Varonis Uncovers New Malware Strains and a Mysterious Web Shell During a Monero Cryptojacking Investigation
The Varonis Security Research team recently investigated an ongoing cryptomining infection that had spread to nearly every device at a mid-size company. Analysis of the collected malware samples revealed a...