129 matches found
Squirrelwaffle Exploits ProxyShell and ProxyLogon to Hijack Email Chains
Squirrelwaffle is known for using the tactic of sending malicious spam as replies to existing email chains. We look into how by investigating its exploit of Microsoft Exchange Server vulnerabilities, ProxyLogon and ProxyShell...
Microsoft Nov. Patch Tuesday Fixes Six Zero-Days, 55 Bugs
Microsoft reported a total of 55 vulnerabilities, six of which are rated critical, with the remaining 49 being rated important. The flaws are found in Microsoft Windows and Windows Components, Azure, Azure RTOS, Azure Sphere, Microsoft Dynamics, Microsoft Edge Chromium-based, Exchange Server,...
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain...
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain...
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain...
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain...
GhostEmperor: From ProxyLogon to kernel mode
Download GhostEmperors technical details PDF While investigating a recent rise of attacks against Exchange servers, we noticed a recurring cluster of activity that appeared in several distinct compromised networks. This cluster stood out for its usage of a formerly unknown Windows kernel mode...
FamousSparrow APT Spies on Hotels, Governments
A cyberespionage group dubbed “FamousSparrow” by researchers has taken flight, targeting hotels, governments and private organizations around the world with a custom backdoor called, appropriately, “SparrowDoor.” It’s one of the advanced persistent threats APTs that targeted the ProxyLogon...
Microsoft Exchange ‘ProxyToken’ Bug Allows Email Snooping
A serious security vulnerability in Microsoft Exchange Server that researchers have dubbed ProxyToken could allow an unauthenticated attacker to access and steal emails from a target’s mailbox. Microsoft Exchange uses two websites; one, the front end, is what users connect to in order to access...
WARNING: Microsoft Exchange Under Attack With ProxyShell Flaws
The U.S. Cybersecurity and Infrastructure Security Agency is warning of active exploitation attempts that leverage the latest line of "ProxyShell" Microsoft Exchange vulnerabilities that were patched earlier this May, including deploying LockFile ransomware on compromised systems. Tracked as...
Cybercrime Group Asking Insiders for Help in Planting Ransomware
A Nigerian threat actor has been observed attempting to recruit employees by offering them to pay $1 million in bitcoins to deploy Black Kingdom ransomware on companies' networks as part of an insider threat scheme. "The sender tells the employee that if they're able to deploy ransomware on a...
Hackers Actively Searching for Unpatched Microsoft Exchange Servers
Threat actors are actively carrying out opportunistic scanning and exploitation of Exchange servers using a new exploit chain leveraging a trio of flaws affecting on-premises installations, making them the latest set of bugs after ProxyLogon vulnerabilities were exploited en masse at the start of...
Popular Attack Surfaces, August 2021: What You Need to Know
See the Updates section at the end of this post for new information as it comes to light. Whether you attended virtually, IRL, or not at all, Black Hat and DEF CON have officially wrapped, and security folks’ brains are replete with fresh information on new and some not-so-new vulnerabilities and...
LemonDuck no longer settles for breadcrumbs
LemonDuck has evolved from a Monero cryptominer into LemonCat, a Trojan that specializes in backdoor installation, credential and data theft, and malware delivery, according to the Microsoft 365 Defender Threat Intelligence Team, which explained their findings in a two-part story 12 on the...
When coin miners evolve, Part 2: Hunting down LemonDuck and LemonCat attacks
Note: In this two-part blog series, we expose a modern malware infrastructure and provide guidance for protecting against the wide range of threats it enables. Part 1 covered the evolution of the threat, how it spreads, and how it impacts organizations. Part 2 provides a deep dive on the attacker...
Chinese Hackers Implant PlugX Variant on Compromised MS Exchange Servers
A Chinese cyberespionage group known for targeting Southeast Asia leveraged flaws in the Microsoft Exchange Server that came to light earlier this March to deploy a previously undocumented variant of a remote access trojan RAT on compromised systems. Attributing the intrusions to a threat actor...
US, EU, UK, NATO blame china for “reckless” Exchange attacks
Do you remember back when the latest urgent update was a vulnerability in Microsoft Exchange? How is that only four months ago? The trigger for the urgent advice in March was the fact that Microsoft detected multiple zero-day exploits being used to attack on-premises versions of Microsoft Exchang...
Police Grab Slilpp, Biggest Stolen-Logins Market
The U.S. Department of Justice DOJ announced on Thursday that a multinational operation has led to the seizure of Slilpp, a well-known marketplace for selling stolen online logins that offered more than 80 million sets of credentials for sale. Since 2012, Slilpp has been an underground market to...
Microsoft Exchange 2019 - Unauthenticated Email Download (Metasploit)
Exploit Title: Microsoft Exchange 2019 - Unauthenticated Email Download Metasploit Date: 2021-03-02 Exploit Author: RAMELLA Sébastien Vendor Homepage: https://microsoft.com Version: This vulnerability affects Exchange 2013 Versions 'Microsoft Exchange ProxyLogon Collector', 'Description' = %q Thi...
Microsoft Exchange ProxyLogon Collector
Exploit Title: Microsoft Exchange 2019 - Unauthenticated Email Download Metasploit Date: 2021-03-02 Exploit Author: RAMELLA Sébastien Vendor Homepage: https://microsoft.com Version: This vulnerability affects Exchange 2013 Versions 'Microsoft Exchange ProxyLogon Collector', 'Description' = %q Thi...