Profiling DEV-0270: PHOSPHORUS’ ransomware operations
Microsoft threat intelligence teams have been tracking multiple ransomware campaigns tied to DEV-0270, also known as Nemesis Kitten, a sub-group of Iranian actor PHOSPHORUS.
Vulnerability in TikTok Android app could lead to one-click account hijacking
Microsoft discovered a high-severity vulnerability in the TikTok Android application, now identified as CVE-2022-28799 and fixed by TikTok, which could have allowed attackers to compromise users’ accounts with a single click.
Cyber Signals: 3 strategies for protection against ransomware
New Cyber Signals shows more than 80 percent of ransomware attacks can be traced to common configuration errors. Here’s how we can get ahead of these attacks together as a cyber defender community.
MERCURY leveraging Log4j 2 vulnerabilities in unpatched systems to target Israeli organizations
Microsoft detected an Iran-based threat actor the Microsoft Threat Intelligence Center (MSTIC) tracks as MERCURY leveraging exploitation of Log4j 2 vulnerabilities in SysAid applications against organizations located in Israel.
MagicWeb: NOBELIUM’s post-compromise trick to authenticate as anyone
Microsoft security researchers have discovered a post-compromise capability we’re calling MagicWeb, which is used by a threat actor we track as NOBELIUM to maintain persistent access to compromised environments.
Looking for the ‘Sliver’ lining: Hunting for emerging command-and-control frameworks
Threat actors evade detection by adopting the Sliver command-and-control (C2) framework in intrusion campaigns.
Uncovering a ChromeOS remote memory corruption vulnerability
Microsoft discovered a memory corruption vulnerability in a ChromeOS component that could have been triggered remotely, allowing attackers to perform either a denial-of-service (DoS) or, in extreme cases, remote code execution (RCE).
Hardware-based threat defense against increasingly complex cryptojackers
To provide advanced protection against increasingly complex and evasive cryptojackers, Microsoft Defender Antivirus integrates with Intel® Threat Detection Technology (TDT) that applies machine learning to low-level CPU telemetry in detecting cryptojackers, even when the malware is obfuscated and can evade security tools.
Disrupting SEABORGIUM’s ongoing phishing operations
The Microsoft Threat Intelligence Center (MSTIC) has observed and taken actions to disrupt campaigns launched by SEABORGIUM in campaigns involve persistent phishing and credential theft campaigns leading to intrusions and data theft.
Untangling KNOTWEED: European private-sector offensive actor using 0-day exploits
MSTIC and MSRC disclose technical details of a private-sector offensive actor (PSOA) tracked as KNOTWEED using multiple Windows and Adobe 0-day exploits, including one for the recently patched CVE-2022-22047, in limited and targeted attacks against European and Central American customers.
Malicious IIS extensions quietly open persistent backdoors into servers
Attackers are increasingly leveraging managed IIS extensions as covert backdoors into servers, providing a durable persistence mechanism for attacks.
North Korean threat actor targets small and midsize businesses with H0lyGh0st ransomware
A group of actors originating from North Korea that MSTIC tracks as DEV-0530 has been developing and using ransomware in attacks since June 2021. This group, which calls itself H0lyGh0st, utilizes a ransomware payload with the same name.