Categories: Security News

More than 75% of Redis Servers Open to Internet are Infected With Malware

New Imperva research report shows more than 75% of Open Redis servers are having the signs of malware infection.

The new crypto-mining attack dubbed RedisWannaMine was initially observed earlier last month targeting Windows Server, Apache Solr, and Redis servers.

More and More Attack on Redis Servers

Attackers compromised the outdated version Redis versions with exploit CVE-2017-9805 and drop ReddisWannaMine that installs cryptocurrency miner.

Imperva sayswe’ve been hearing about more and more attacks on Redis servers”. To determine the significance of the attack researchers deployed a radius server based honeypot and within 24hours the servers registered the first attack.

Attackers set up a value key/ value pair in the memory and save it to the disk and force the file to run and download the file from external source. Imperva noticed the same key/ value pair on multiple servers which are a clear sign of botnet activity.

Also Read Best Way to Accelerate and Secure Your Website From Top Common Web Threats

72K Open Redis servers

According to Shodan Query over port:6379 there are over 73,000 Redis servers were open to the Internet, which allows untrusted clients to access the Redis server.

According to the Imperva scan results, most of the server found to be infected with the malware “more than two-thirds of the open Redis servers contain malicious keys and three-quarters of the servers contain malicious values, suggesting that the server is infected.”

The Redis based honeypot exposed by Imperva target by a medium-sized botnet located at China (86% of IPs). The attacks included SQL injection, cross-site scripting, the malicious file uploads, remote code executions etc.

“We often see issues arise when people don’t read the documentation and migrate services to the cloud, without being aware of the consequences or the adequate measures that are needed to do so.”

Mitigations

  • Don’t expose the Redis instance directly to the internet.
  • Apply Authentication if possible.
  • Don’t store sensitive data in clear text.
  • Check the CPU usage and key values for infection.
  • Make sure you run Redis with the minimal privileges necessary.
Gurubaran

Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Recent Posts

Evasive Panda Attacking Cloud Services To Steal Data Using New Toolkit

The Evasive Panda group deployed a new C# framework named CloudScout to target a Taiwanese…

5 hours ago

Massive Midnight Blizzard Phishing Attack Using Weaponized RDP Files

Researchers warn of ongoing spear-phishing attacks by Russian threat actor Midnight Blizzard targeting individuals in…

6 hours ago

Sophisticated Phishing Attack Targeting Ukraine Military Sectors

The Ukrainian Cyber Emergency Response Team discovered a targeted phishing campaign launched by UAC-0215 against…

6 hours ago

Chinese Hackers Attacking Microsoft Customers With Sophisticated Password Spray Attacks

Researchers have identified a network of compromised devices, CovertNetwork-1658, used by Chinese threat actors to…

6 hours ago

New Windows Zero-Day Vulnerability Let Attackers Steal Credentials From Victim’s Machine

A security researcher discovered a vulnerability in Windows theme files in the previous year, which…

6 hours ago

SYS01 InfoStealer Malware Attacking Meta Business Page To Steal Logins

The ongoing Meta malvertising campaign, active for over a month, employs an evolving strategy to…

6 hours ago