Exploit for Deserialization of Untrusted Data in Microsoft

CVE-2022-41082-POC PoC for the CVE-2022-41082 NotProxyShell OW...

Rackspace Confirms Play Ransomware Gang Responsible for Recent Breach

Cloud services provider Rackspace on Thursday confirmed that the ransomware gang known as Play was responsible for last month's breach. The security incident, which took place on December 2, 2022, leveraged a previously unknown security exploit to gain initial access to the Rackspace Hosted...

Microsoft Confirms Two 0-Days Being Exploited Against Exchange Servers

By Deeba Ahmed The latest attack against Exchange servers utilizes at least two new flaws CVE-2022-41040, CVE-2022-41082 that have been assigned CVSS scores of 6.3 and 8.8. This is a post from HackRead.com Read the original post: Microsoft Confirms Two 0-Days Being Exploited Against Exchange Serv...

Exchange servers abused for spam through malicious OAuth applications

Microsoft has published a security blog about an investigation into an attack in which threat actors used malicious OAuth applications to abuse Exchange servers for their spam campaign. The threat actor behind this attack has been active for many years, and has been running spam campaigns using...

Hackers Using Malicious OAuth Apps to Take Over Email Servers

Microsoft on Thursday warned of a consumer-facing attack that made use of rogue OAuth applications deployed on compromised cloud tenants to ultimately seize control of Exchange servers and spread spam. "The threat actor launched credential stuffing attacks against high-risk accounts that didn't...

Microsoft: Hackers are Using Malicious IIS Extensions to Backdoor Exchange Servers

By Deeba Ahmed According to Microsoft, hackers are exploiting the IIS web servers to install backdoors and steal credentials in their… This is a post from HackRead.com Read the original post: Microsoft: Hackers are Using Malicious IIS Extensions to Backdoor Exchange Servers...

What Talos Incident Response learned from a recent Qakbot attack hijacking old email threads

By Nate Pors and Terryn Valikodath. Executive summary In a recent malspam campaign delivering the Qakbot banking trojan, Cisco Talos Incident Response CTIR observed the adversary using aggregated, old email threads from multiple organizations that we assess were likely harvested during the 2021...

APT Hackers Targeting Industrial Control Systems with ShadowPad Backdoor

Entities located in Afghanistan, Malaysia, and Pakistan are in the crosshairs of an attack campaign that targets unpatched Microsoft Exchange Servers as an initial access vector to deploy the ShadowPad malware. Russian cybersecurity firm Kaspersky, which first detected the activity in mid-October...

Elusive ToddyCat APT Targets Microsoft Exchange Servers

An advanced persistent threat APT group, dubbed ToddyCat, is believed behind a series of attacks targeting Microsoft Exchange servers of high-profile government and military installations in Asia and Europe. The campaigns, according to researchers, began in December 2020, and have been largely...

APT ToddyCat

ToddyCat is a relatively new APT actor that we have not been able to relate to other known actors, responsible for multiple sets of attacks detected since December 2020 against high-profile entities in Europe and Asia. We still have little information about this actor, but we know that its main...

Hackers Deploy IceApple Exploitation Framework on Hacked MS Exchange Servers

Researchers have detailed a previously undocumented .NET-based post-exploitation framework called IceApple that has been deployed on Microsoft Exchange server instances to facilitate reconnaissance and data exfiltration. "Suspected to be the work of a state-nexus adversary, IceApple remains under...

Microsoft Exposes Evasive Chinese Tarrask Malware Attacking Windows Computers

The Chinese-backed Hafnium hacking group has been linked to a piece of a new malware that's used to maintain persistence on compromised Windows environments. The threat actor is said to have targeted entities in the telecommunication, internet service provider and data services sectors from Augus...

Hackers Hijack Email Reply Chains on Unpatched Exchange Servers to Spread Malware

A new email phishing campaign has been spotted leveraging the tactic of conversation hijacking to deliver the IcedID info-stealing malware onto infected machines by making use of unpatched and publicly-exposed Microsoft Exchange servers. "The emails use a social engineering technique of...

‘Seedworm’ Attackers Target Telcos in Asia, Middle East

Attackers targeting telcos across the Middle East and Asia for the past six months are linked to Iranian state-sponsored hackers, according to researchers. The cyberespionage campaigns leverage a potent cocktail of spear phishing, known malware and legitimate network utilities that are leveraged ...

‘Tortilla’ Wraps Exchange Servers in ProxyShell Attacks

A new-ish threat actor sometimes known as “Tortilla” is launching a fresh round of ProxyShell attacks on Microsoft Exchange servers, this time with the aim of inflicting vulnerable servers with variants of the Babuk ransomware. Cisco Talos researchers said in a Wednesday report that they spotted...

A New APT Hacking Group Targeting Fuel, Energy, and Aviation Industries

A previously undocumented threat actor has been identified as behind a string of attacks targeting fuel, energy, and aviation production industries in Russia, the U.S., India, Nepal, Taiwan, and Japan with the goal of stealing data from compromised networks. Cybersecurity company Positive...

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...

Conti ransomware affiliates hit Exchange Servers with ProxyShell exploits

By Waqas Conti ransomware affiliates are exploiting 3 unpatched vulnerabilities that allow unauthenticated, remote code execution on MS Exchange Servers. This is a post from HackRead.com Read the original post: Conti ransomware affiliates hit Exchange Servers with ProxyShell exploits...

Unpatched Microsoft Exchange servers hit with ProxyShell attack

By Waqas Researchers have identified 140+ webshells launched against 1,900 unpatched Microsoft Exchange servers. This is a post from HackRead.com Read the original post: Unpatched Microsoft Exchange servers hit with ProxyShell attack...

ProxyShell and PetitPotam exploits weaponized by LockFile Ransomware Group

THREAT LEVEL: Red. For a detailed advisory, download the pdf file here. LockFile, a new ransomware gang, has been active since last week. LockFile began by using a publicly disclosed PetitPotam exploit CVE-2021-36942 to compromise Windows Domain Controllers earlier this week. Using ProxyShell...