Linux.Siggen.640
Added to the Dr.Web virus database:
2018-05-25
Virus description added:
2018-05-25
Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- /var/spool/cron/crontabs/root
- /etc/init.d/sed81iBOp
- /etc/init.d/urandom
Malicious functions:
Launches itself as a daemon
Manages services:
Launches processes:
- sh -c (crontab -l| grep -v c855a922; echo \"*/10 * * * * /root/c855a922 >/dev/null 2>&1\") | crontab -
- crontab -
- crontab -l
- grep -v c855a922
- /root/c855a922
- sh -c service --status-all | grep + | tail -n 1
- grep +
- tail -n 1
- sh -c sed -i 's/.*END.*/&\n\/root\/c855a922/' /etc/init.d/urandom
- sed -i s/.*END.*/&\n\/root\/c855a922/ /etc/init.d/urandom
- sh -c touch --reference=$(which id) /etc/init.d/urandom
- which id
- touch --reference=/usr/bin/id /etc/init.d/urandom
- sh -c netstat -unlt | grep tcp | cut -d \":\" -f2 | awk '{print $1}'| xargs
- grep tcp
- netstat -unlt
- cut -d : -f2
- awk {print $1}
- xargs
- /bin/echo 50794 111 22 25
- sh -c which sh
- which sh
- sh -c which bash
- which bash
Performs operations with the file system:
Modifies file access rights:
- /var/spool/cron/crontabs/tmp.U84twf
- /etc/init.d/sed81iBOp
Creates or modifies files:
- <SAMPLE_FULL_PATH>
- /var/spool/cron/crontabs/tmp.U84twf
Network activity:
Establishes connection:
DNS ASK:
Curing recommendations
Linux
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