Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- /var/spool/cron/crontabs/root
Malicious functions:
Launches itself as a daemon
Substitutes application name for:
- nginx
- watchdogd
Launches processes:
- crontab -
- crontab -l
- iptables -I INPUT -p tcp --dport 14921 -j ACCEPT
- echo \x22@reboot <SAMPLE_FULL_PATH>\x22 | crontab -
- /usr/sbin/xtables-nft-multi iptables -I INPUT -p tcp --dport 14921 -j ACCEPT
Kills the following processes:
- <SAMPLE>
Performs operations with the file system:
Modifies file access rights:
- /var/spool/cron/crontabs/tmp.sdwQ03
Creates or modifies files:
- /var/spool/cron/crontabs/tmp.sdwQ03
- /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
Changes time of creation/access/modification of files:
- /var/spool/cron/crontabs
Network activity:
Awaits incoming connections on ports:
- 0.0.0.0:14921
Establishes connection:
- 0.0.0.0:43782
- 45.##.147.236:2137
DNS ASK:
- xm#.#huyal.xyz
- cn#.#huyal.xyz
- c2.##yncfox.xyz
Sends data to the following servers:
- 45.##.147.236:2137
Receives data from the following servers:
- 127.0.0.1:43782
- 45.##.147.236:2137
Other:
Collects CPU information
Collects RAM information
