Skip to content
NewA calmer, faster ZeroHour

Are Your Nagios XI Servers Turning Into Cryptocurrency Miners for Attackers?

Palo Alto Unit 42by Haozhe Zhang, Vaibhav Singhal, Zhibin Zhang, Qi Deng ()5 min read3 · 1 read
Analyze CVE-2021-25296 with Vani AIImpact, affected versions, exploitation, mitigations and detection

Vulnerabilities mentioned

All
CVEVulnerabilityCVSSEPSSSignalsPublished
CVE-2021-25296
Authenticated OS Command Injection in Nagios XI 5.7.5 Windows WMI Wizard
8.872%KEVPoC ×3
KEV

Indicators of compromise

auto-extracted · verify before use · export allAll
TypeIndicatorContext
ipv4118.107.43.174e a malicious bash script fetched from the malicious server 118[.]107[.]43[.]174 . One of the observed payloads is shown in Figure 1.
sha2562c923d8b553bde8ce3167fe83f35a40a712e2bed2b76ebaf5e3e63642d551389g.json http://118[.]107[.]43[.]174/upload/files/config.json 2c923d8b553bde8ce3167fe83f35a40a712e2bed2b76ebaf5e3e63642d551389 run.sh http://118[.]107[.]43[.]174/upload/files/run.sh c711
sha2564079b3b34caa86dce0edc923a3292f5814dd555f28e8e6ec4c879a2c50a80787ar.gz http://118[.]107[.]43[.]174/upload/files/xmrig.tar.gz 4079b3b34caa86dce0edc923a3292f5814dd555f28e8e6ec4c879a2c50a80787
sha25654b45e93cee8f08a97b86afa78a78bc070b6167dcc6cdc735bd167af076cb5b3SHA256 xmrig http://118[.]107[.]43[.]174/upload/files/xmrig 54b45e93cee8f08a97b86afa78a78bc070b6167dcc6cdc735bd167af076cb5b3 config.json http://118[.]107[.]43[.]174/upload/files/config
sha256c711bb6cf918b1f140f4162daab37844656eba2e16c25c429606e4c69c990f991389 run.sh http://118[.]107[.]43[.]174/upload/files/run.sh c711bb6cf918b1f140f4162daab37844656eba2e16c25c429606e4c69c990f99 xmrig.tar.gz http://118[.]107[.]43[.]174/upload/files/xmrig

From the original article

5 min read at unit42.paloaltonetworks.com

On March 16, 2021, Unit 42 researchers observed an attacker targeting Nagios XI software to exploit the vulnerability CVE-2021-25296 , a remote command injection vulnerability impacting Nagios XI version 5. 7. 5, to conduct a cryptojacking attack and deploy the XMRig coinminer on victims’ devices.

Palo Alto Unit 42

By Haozhe Zhang, Vaibhav Singhal, Zhibin Zhang, Qi Deng · unit42.paloaltonetworks.com

Read the full article at Palo Alto Unit 42

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.