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Linux.Siggen.3185

Added to the Dr.Web virus database: 2020-07-02

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/init.d/anacroni
  • /etc/init.d/.depend.boot
  • /etc/init.d/.depend.start
  • /etc/init.d/.depend.stop
Creates or modifies the following symlinks:
  • /etc/rc0.d/K02exim4
  • /etc/rc0.d/K08umountfs
  • /etc/rc0.d/K05umountnfs.sh
  • /etc/rc0.d/K03sendsigs
  • /etc/rc0.d/K04rsyslog
  • /etc/rc0.d/K07networking
  • /etc/rc0.d/K07hwclock.sh
  • /etc/rc0.d/K06rpcbind
  • /etc/rc0.d/K10halt
  • /etc/rc0.d/K09umountroot
  • /etc/rc0.d/K06nfs-common
  • /etc/rc0.d/K01anacroni
  • /etc/rc1.d/K02exim4
  • /etc/rc1.d/K04rsyslog
  • /etc/rc1.d/K06rpcbind
  • /etc/rc1.d/K06nfs-common
  • /etc/rc1.d/K01anacroni
  • /etc/rc2.d/S02anacroni
  • /etc/rc3.d/S02anacroni
  • /etc/rc4.d/S02anacroni
  • /etc/rc5.d/S02anacroni
  • /etc/rc6.d/K02exim4
  • /etc/rc6.d/K08umountfs
  • /etc/rc6.d/K05umountnfs.sh
  • /etc/rc6.d/K03sendsigs
  • /etc/rc6.d/K04rsyslog
  • /etc/rc6.d/K07networking
  • /etc/rc6.d/K07hwclock.sh
  • /etc/rc6.d/K06rpcbind
  • /etc/rc6.d/K09umountroot
  • /etc/rc6.d/K10reboot
  • /etc/rc6.d/K06nfs-common
  • /etc/rc6.d/K01anacroni
Malicious functions:
Launches itself as a daemon
Manages services:
  • update-rc.d anacroni defaults 95
  • systemctl daemon-reload
  • service anacroni start
Launches processes:
  • sh -c cp -f <SAMPLE_FULL_PATH> /bin/anacroni
  • cp -f <SAMPLE_FULL_PATH> /bin/anacroni
  • sh -c touch -r /bin/sh /etc/init.d/anacroni
  • touch -r /bin/sh /etc/init.d/anacroni
  • sh -c chmod 777 /etc/init.d/anacroni
  • chmod 777 /etc/init.d/anacroni
  • sh -c chkconfig --add anacroni
  • sh -c chkconfig anacroni on
  • sh -c update-rc.d anacroni defaults 95
  • /sbin/insserv anacroni
  • sh -c service anacroni start
Performs operations with the file system:
Modifies file access rights:
  • /etc/init.d/anacroni
Creates or modifies files:
  • /bin/anacroni
Deletes files:
  • /etc/rc0.d/K01exim4
  • /etc/rc0.d/K07umountfs
  • /etc/rc0.d/K04umountnfs.sh
  • /etc/rc0.d/K02sendsigs
  • /etc/rc0.d/K03rsyslog
  • /etc/rc0.d/K06networking
  • /etc/rc0.d/K06hwclock.sh
  • /etc/rc0.d/K05rpcbind
  • /etc/rc0.d/K09halt
  • /etc/rc0.d/K08umountroot
  • /etc/rc0.d/K05nfs-common
  • /etc/rc1.d/K01exim4
  • /etc/rc1.d/K03rsyslog
  • /etc/rc1.d/K05rpcbind
  • /etc/rc1.d/K05nfs-common
  • /etc/rc6.d/K01exim4
  • /etc/rc6.d/K07umountfs
  • /etc/rc6.d/K04umountnfs.sh
  • /etc/rc6.d/K02sendsigs
  • /etc/rc6.d/K03rsyslog
  • /etc/rc6.d/K06networking
  • /etc/rc6.d/K06hwclock.sh
  • /etc/rc6.d/K05rpcbind
  • /etc/rc6.d/K08umountroot
  • /etc/rc6.d/K09reboot
  • /etc/rc6.d/K05nfs-common

Curing recommendations

Linux

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