Asian Governments and Organizations Targeted in Latest Cyber Espionage Attacks

Government and state-owned organizations in a number of Asian countries have been targeted by a distinct group of espionage hackers as part of an intelligence gathering mission that has been underway since early 2021. "A notable feature of these attacks is that the attackers leveraged a wide rang...

China-backed APT41 Hackers Targeted 13 Organisations Worldwide Last Year

The Chinese advanced persistent threat APT actor tracked as Winnti has targeted at least 13 organizations geographically spanning across the U.S, Taiwan, India, Vietnam, and China against the backdrop of four different campaigns in 2021. "The targeted industries included the public sector,...

IIS extensions are on the rise as backdoors to servers

The Microsoft 365 Defender Research Team has warned that attackers are increasingly leveraging Internet Information Services IIS extensions as covert backdoors into servers. IIS extensions are able to stay hidden in target environments and as such provide a long-term persistence mechanism for...

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...

Malicious IIS Extensions Gaining Popularity Among Cyber Criminals for Persistent Access

Threat actors are increasingly abusing Internet Information Services IIS extensions to backdoor servers as a means of establishing a "durable persistence mechanism." That's according to a new warning from the Microsoft 365 Defender Research Team, which said that "IIS backdoors are also harder to...

New 'SessionManager' Backdoor Targeting Microsoft IIS Servers in the Wild

A newly discovered malware has been put to use in the wild at least since March 2021 to backdoor Microsoft Exchange servers belonging to a wide range of entities worldwide, with infections lingering in 20 organizations as of June 2022. Dubbed SessionManager, the malicious tool masquerades as a...

The SessionManager IIS backdoor

Following on from our earlier Owowa discovery, we continued to hunt for more backdoors potentially set up as malicious modules within IIS, a popular web server edited by Microsoft. And we didnt come back empty-handed… In 2021, we noticed a trend among several threat actors for deploying a backdoo...

Exploit for Server-Side Request Forgery in Microsoft

ProxyLogon ProxyLogon is the formally generic name for CVE-202...

Exploit for Server-Side Request Forgery in Microsoft

proxylogon my exploit for the proxylogon chain Microsoft Exch...

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...

Growling Bears Make Thunderous Noise

Growling Bears Make Thunderous Noise By Trellix · June 6, 2022 Per public attribution, Russian cybercriminal groups have always been active. Their tactics, techniques, and procedures TTPs have not significantly evolved over time, although some changes have been observed. Lately, the threat...

CISA Alert: Top 15 Routinely Exploited Vulnerabilities

The U.S. Cybersecurity & Infrastructure Security Agency has published its report on the top exploited vulnerabilities of 2021. This blog summarizes the report’s findings and how you can use Qualys VMDR to automatically detect and remediate these risks in your enterprise environment. The...

2021 Top Routinely Exploited Vulnerabilities

Summary This joint Cybersecurity Advisory CSA was coauthored by cybersecurity authorities of the United States, Australia, Canada, New Zealand, and the United Kingdom: the Cybersecurity and Infrastructure Security Agency CISA, National Security Agency NSA, Federal Bureau of Investigation FBI,...

UNC2596 exploits Microsoft’s ProxyShell and ProxyLogon vulnerabilities to distribute Cuba Ransomware

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Microsoft Exchange Server Bugs Exploited by ‘Cuba’ Ransomware Gang

The ransomware gang known as “Cuba” is increasingly shifting to exploiting Microsoft Exchange vulnerabilities – including ProxyShell and ProxyLogon – as initial infection vectors, researchers have found. The group has likely been prying open these chinks in victims’ armor as early as last August,...

Malicious Exchange Server Module Hoovers Up Outlook Credentials

Researchers have uncovered a previously unknown malicious IIS module, dubbed Owowa, that steals credentials when users log into Microsoft Outlook Web Access OWA. Internet Information Services IIS, Microsoft’s web server/web-hosting software suite, can be extended via various add-ons that are know...

Exploit for Server-Side Request Forgery in Microsoft

pocproxylogon Microsoft Exchange ProxyLogon PoC CVE-2021-268...

This Week in Security News - December 3, 2021

This week, learn about how Squirrelwaffle utilized ProxyLogon and ProxyShell to hack email chains. Also, read on a recent data breach of the Los Angeles Planned Parenthood Network...

Attackers Hijack Email Using Proxy Logon/Proxyshell Flaws

Attackers are gnawing on the ProxyLogon and ProxyShell vulnerabilities in Microsoft Exchange Server to hijack email chains, by malspamming replies to ongoing email threads, researchers say. What’s still under discussion: whether the offensive is delivering SquirrelWaffle, the new email loader tha...

Hackers Exploiting ProxyLogon and ProxyShell Flaws in Spam Campaigns

Threat actors are exploiting ProxyLogon and ProxyShell exploits in unpatched Microsoft Exchange Servers as part of an ongoing spam campaign that leverages stolen email chains to bypass security software and deploy malware on vulnerable systems. The findings come from Trend Micro following an...