NSA, CISA, FBI Warn of Custom Exfiltration Tools Being Used Against Defense Industrial Base Organization

FORT MEADE, Md. — The National Security Agency (NSA), the Cybersecurity and Infrastructure Security Agency (CISA), and the FBI released a Cybersecurity Advisory today that details the tactics, techniques and procedures (TTPs) that likely multiple advanced persistent threat (APT) groups Read More …

Witchetty: Group Uses Updated Toolset in Attacks on Governments in Middle East

The Witchetty espionage group (aka LookingFrog) has been progressively updating its toolset, using new malware in attacks on targets in the Middle East and Africa. Among the new tools being used by the group is a backdoor Trojan (Backdoor.Stegmap) that Read More …

Squirrelwaffle, Microsoft Exchange Server vulnerabilities exploited for financial fraud

The combination of Squirrelwaffle, ProxyLogon, and ProxyShell against Microsoft Exchange Servers is being used to conduct financial fraud through email hijacking. On Tuesday, researchers from Sophos revealed a recent incident in which a Microsoft Exchange Server, which had not been Read More …

Attackers Hijack Email Threads Using ProxyLogon/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 Read More …

APT41 Resurfaces as Earth Baku With New Cyberespionage Campaign

Trend Micro researchers have uncovered a cyberespionage campaign being perpetrated by Earth Baku, an advanced persistent threat (APT) group with a known history of carrying out cyberattacks under the alias APT41. This is not the group’s first foray into cyberespionage, Read More …

‘DeadRinger’ Targeted Exchange Servers Long Before Discovery

Threat actors linked to China exploited the notorious Microsoft Exchange ProxyLogon vulnerabilities long before they were publicly disclosed, in attacks against telecommunications companies aimed at stealing sensitive customer data and maintaining network persistence, researchers have found. Researchers from Cybereason have Read More …

Lemon Duck hacking group adopts Microsoft Exchange Server vulnerabilities in new attacks

Researchers have explored the latest activities of the Lemon Duck hacking group, including the leverage of Microsoft Exchange Server vulnerabilities and the use of decoy top-level domains. The active exploit of zero-day Microsoft Exchange Server vulnerabilities in the wild was Read More …

FBI nuked web shells from hacked Exchange Servers without telling owners

A court-approved FBI operation was conducted to remove web shells from compromised US-based Microsoft Exchange servers without first notifying the servers’ owners. On March 2nd, Microsoft released a series of Microsoft Exchange security updates for vulnerabilities actively exploited by a Read More …