Coinminer.SH.MALXMR.ATNE
Linux
Threat Type: Coinminer
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet
This Coinminer arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
However, as of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
2,652 bytes
Other
No
09 Oct 2018
Connects to URLs/IPs
Arrival Details
This Coinminer arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Coinminer adds the following processes:
- xm.service
Process Termination
This Coinminer terminates the following processes if found running in the affected system's memory:
- xmrig
- proc
- xmr-stak
- minergate-cli
- bashd.service -> also disabled from starting automatically
Download Routine
This Coinminer accesses the following websites to download files:
- http://{BLOCKED}.{BLOCKED}.219.163/k.php
- http://{BLOCKED}.{BLOCKED}.219.163/data.cfg
- http://{BLOCKED}.{BLOCKED}.219.163/xm
- http://{BLOCKED}.{BLOCKED}.219.163/xm.service
- http://{BLOCKED}.{BLOCKED}.219.163/test.sh
- http://{BLOCKED}.{BLOCKED}.219.163/test3.sh
It saves the files it downloads using the following names:
- {Malware Path}/data.cfg
- {Malware Path}/xm
- {Malware Path}/test.sh
- {Malware Path}/test3.sh
- /etc/systemd/system/xm.service
Other Details
This Coinminer does the following:
- Creates users "richard" and "frank" then grant them root privileges
- Reconfigure the secure socket shell (SSH) daemon to allow password authentication, and restart the SSH daemon
- Make the downloaded scripts executable
- Scan all networks seen from the host w/ scan rate of 50,000 packets per second for open ports 2375 and 2376 and save the result into local.txt file
- Spread laterally by automatically replicating the tools to the hosts found in previous reconnaissance scans
- Check the persistence of the Monero-mining process and start the process, it if it is not running
- Install the following packages:
- systemd
- masscan
- iproute2
However, as of this writing, the said sites are inaccessible.
SOLUTION
9.850
14.554.06
09 Oct 2018
14.555.00
10 Oct 2018
Scan your computer with your Trend Micro product to delete files detected as Coinminer.SH.MALXMR.ATNE. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:
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