Sophos: Conti Ransomware Hacks Microsoft Exchange Servers

Share post:

Conti Ransomware gang is in the midst of hacking into Microsoft Exchange servers and breaching corporate networks.

Sophos, a British security and hardware company, discovered the hacks after analyzing an attack in which the Conti Ransomware gang has encrypted a customer.

According to Sophos, threat actors compromise the system by exploiting the recently revealed Microsoft Exchange ProxyShell vulnerabilities, which were achieved after the threat actors initially dropped web shells used to execute commands, download software, and further compromise the server.

Once complete control of the server is achieved, Sophos noted what comes next: “Within 48 hours of gaining this initial access, the attackers had exfiltrated about 1 terabyte of data.”

During the intrusion, the Conti affiliates installed no less than seven backdoors in the network: two web shells, Cobalt Strike, and four commercial remote access tools.

The web shells were mainly used for initial access, with Cobalt Strike and Any Desk used as the primary tools for the rest of the attack.

For more information, read the original story in Bleeping Computer.

Featured Tech Jobs

SUBSCRIBE NOW

Related articles

Google Play introduces new biometric verification with a user warning

Google has recently announced updates to the biometric verification process for Google Play purchases, aiming to bolster security...

Cyber Security Today, Week in Review for week ending Friday April 19, 2024

On this episode Jen Ellis, co-chair of the Ransomware Task Force, talks about ways of fighting one of the biggest cyber threats to IT d

Cyber Security Today, April 19, 2024 – Police bust phishing rental platform, a nine-year old virus found on Ukrainian computers, and more

This episode reports on a threat actor targeting governments in the Middle East with a novel way of hiding malware is going international

Controversial expansion of US surveillance powers nears Senate vote

The US Senate is poised to vote on a significant expansion of Section 702 of the Foreign Intelligence...

Become a member

New, Relevant Tech Stories. Our article selection is done by industry professionals. Our writers summarize them to give you the key takeaways