Microsoft Exchange Server Remote Code Execution Vulnerability
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
microsoft exchange server 2016 |
||
microsoft exchange server 2013 |
||
microsoft exchange server 2019 |
Exbyte is the latest tool developed by ransomware attackers to expedite data theft from victims.
Posted: 21 Oct, 20228 Min ReadThreat Intelligence SubscribeFollowtwitterlinkedinExbyte: BlackByte Ransomware Attackers Deploy New Exfiltration ToolExbyte is the latest tool developed by ransomware attackers to expedite data theft from victims.Symantec’s Threat Hunter Team has discovered that at least one affiliate of the BlackByte ransomware (Ransom.Blackbyte) operation has begun using a custom data exfiltration tool during their attacks. The malware (...
Governments and state-owned organizations are the latest targets of a well-established threat actor.
Posted: 13 Sep, 202212 Min ReadThreat Intelligence SubscribeFollowtwitterlinkedinNew Wave of Espionage Activity Targets Asian GovernmentsGovernments and state-owned organizations are the latest targets of a well-established threat actor.A distinct group of espionage attackers who were formerly associated with the ShadowPad remote access Trojan (RAT) has adopted a new, diverse toolset to mount an ongoing campaign against a range of government and state-ow...
Two-factor or multi-factor authentication is used to secure organizations and accounts from attackers, making it a problem for malicious actors. Recent attacks show how they are attempting to bypass or avoid it completely.
Posted: 5 May, 20218 Min ReadThreat Intelligence SubscribeMulti-Factor Authentication: Headache for Cyber Actors Inspires New Attack TechniquesTwo-factor or multi-factor authentication is used to secure organizations and accounts from attackers, making it a problem for malicious actors. Recent attacks show how they are attempting to bypass or avoid it completely.In recent years two-factor or multi-factor authentication (MFA) has been touted as the way to...
Latest tools, tactics, and procedures being used by the Hive, Conti, and AvosLocker ransomware operations.
Posted: 28 Apr, 20228 Min ReadThreat Intelligence SubscribeFollowtwitterlinkedinRansomware: How Attackers are Breaching Corporate NetworksLatest tools, tactics, and procedures being used by the Hive, Conti, and AvosLocker ransomware operations.Targeted ransomware attacks continue to be one of the most critical cyber risks facing organizations of all sizes. The tactics used by ransomware attackers are continually evolving, but by identifying the most freq...
Symantec's Intrusion Protection technology will block all attempted exploits of critical vulnerabilities.
Posted: 8 Mar, 20214 Min ReadThreat Intelligence SubscribeHow Symantec Stops Microsoft Exchange Server AttacksSymantec's Intrusion Protection technology will block all attempted exploits of critical vulnerabilities. Users of Microsoft Exchange Server are advised to update to the latest version immediately, as a growing number of attackers are attempting to exploit four recently patched zero-day vulnerabilities in the software. Microsoft released emergenc...
Introduction Knowledge is our best weapon in the fight against cybercrime. An understanding of how various gangs operate and what tools they use helps build competent defenses and investigate incidents. This report takes a close look at the history of the Cuba group, and their attack tactics, techniques and procedures. We hope this article will help you to stay one step ahead of threats like this one. Cuba ransomware gang Cuba data leak site The group’s offensives first got on our radar in lat...
Get our weekly newsletter Multi-use toolkit deployed on victims' networks across Asia, North America
ESET and TrendMicro have identified a novel and sophisticated backdoor tool that miscreants have slipped onto compromised Windows computers in companies mostly in Asia but also in North America. As usual in the infosec world, the pair of security outfits can't agree on a name for this remote-access module. ESET refers to the malware as SideWalk and to the group responsible as SparklingGoblin; TrendMicro prefers ScrambleCross and calls the threat actor Earth Baku, even as it acknowledges that the...
Funny how code that targets Redmond vanishes while tons of others menacing other vendors remain Beware the IDEs of March: Microsoft's latest monthly fixes land after frantic Exchange Server updates
On Wednesday, shortly after security researcher Nguyen Jang posted a proof-of-concept exploit on GitHub that abuses a Microsoft Exchange vulnerability revealed earlier this month, GitHub, which is owned by Microsoft, removed code, to the alarm of security researchers. The PoC code, something short of an actual functioning exploit, consisted of a 169-line Python file. It took advantage of CVE-2021-26855, a Microsoft Exchange Server flaw that allows an attacker to bypass authentication and act wit...
Bugs in Visual Studio, Visual Studio Code are the least of it US National Security Council urges review of Exchange Servers in wake of Hafnium attack Delayed, overbudget and broken. Of course Microsoft's finest would be found in NASA's Orion
Patch Tuesday A week after Microsoft warned that four zero-day flaws and three others in its Exchange Server were being actively exploited and issued out-of-band remediation, the cloudy Windows biz has delivered software fixes to address 82 other vulnerabilities as part of its monthly Patch Tuesday ritual. All told, that makes 89 CVEs for the month, 14 of which have been deemed critical. Microsoft says two of these vulnerabilities (CVE-2021-26411 and CVE-2021-27077) are publicly known and five a...
Topics Security Off-Prem On-Prem Software Offbeat Vendor Voice Vendor Voice Resources Malicious cyber actors go after 2021's biggest misses, spend less time on the classics
Security flaws in Log4j, Microsoft Exchange, and Atlassian's workspace collaboration software were among the bugs most frequently exploited by "malicious cyber actors" in 2021 , according to a joint advisory by the Five Eyes nations' cybersecurity and law enforcement agencies. It's worth noting that 11 of the 15 flaws on the list were disclosed in 2021, as previous years' lists often found miscreants exploiting the older vulns for which patches had been available for years. Of course, the US Cyb...
Topics Security Off-Prem On-Prem Software Offbeat Vendor Voice Vendor Voice Resources Tell us it’s Russia without telling us it’s Russia
Spies for months hid inside a US military contractor's enterprise network and stole sensitive data, according to a joint alert from the US government's Cybersecurity and Infrastructure Security Agency (CISA), the FBI, and NSA. The intruders somehow broke into the defense org's Microsoft Exchange Server – the Feds still aren't sure how – and rummaged through mailboxes for hours and used a compromised admin account to query Exchange via its EWS API. The snoops also ran Windows commands to lear...
Topics Security Off-Prem On-Prem Software Offbeat Vendor Voice Vendor Voice Resources Now that's sticker shock
Internet snoops has been caught concealing spyware in an old Windows logo in an attack on governments in the Middle East. The Witchetty gang used steganography to stash backdoor Windows malware, dubbed Backdoor.Stegmap, in the bitmap image. "Although rarely used by attackers, if successfully executed, steganography can be leveraged to disguise malicious code in seemingly innocuous-looking image files," researchers at Symantec's Threat Hunter Team wrote this week. "Disguising the payload in this ...
Topics Security Off-Prem On-Prem Software Offbeat Vendor Voice Vendor Voice Resources Now that's sticker shock
Internet snoops have been caught concealing spyware in an old Windows logo in an attack on governments in the Middle East. The Witchetty gang used steganography to stash backdoor Windows malware – dubbed Backdoor.Stegmap – in the bitmap image. "Although rarely used by attackers, if successfully executed, steganography can be leveraged to disguise malicious code in seemingly innocuous-looking image files," researchers at Symantec's Threat Hunter Team wrote this week. "Disguising the payload i...
Vulmon