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Linux.Packed.63

Added to the Dr.Web virus database: 2018-04-16

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/init.d/VsystemsshMdt
  • /etc/init.d/selinux
Creates or modifies the following symlinks:
  • /etc/rc1.d/S97VsystemsshMdt"
  • /etc/rc2.d/S97VsystemsshMdt"
  • /etc/rc3.d/S97VsystemsshMdt"
  • /etc/rc4.d/S97VsystemsshMdt"
  • /etc/rc5.d/S97VsystemsshMdt"
  • /etc/rc1.d/S99selinux"
  • /etc/rc2.d/S99selinux"
  • /etc/rc3.d/S99selinux"
  • /etc/rc4.d/S99selinux"
  • /etc/rc5.d/S99selinux"
Malicious functions:
Launches itself as a daemon
Replaces the following system files:
  • /bin/netstat
  • /bin/ps
  • /usr/bin/lsof
Launches processes:
  • sh -c ln -s /etc/init.d/VsystemsshMdt /etc/rc1.d/S97VsystemsshMdt
  • ln -s /etc/init.d/VsystemsshMdt /etc/rc1.d/S97VsystemsshMdt
  • sh -c ln -s /etc/init.d/VsystemsshMdt /etc/rc2.d/S97VsystemsshMdt
  • ln -s /etc/init.d/VsystemsshMdt /etc/rc2.d/S97VsystemsshMdt
  • sh -c ln -s /etc/init.d/VsystemsshMdt /etc/rc3.d/S97VsystemsshMdt
  • ln -s /etc/init.d/VsystemsshMdt /etc/rc3.d/S97VsystemsshMdt
  • sh -c ln -s /etc/init.d/VsystemsshMdt /etc/rc4.d/S97VsystemsshMdt
  • ln -s /etc/init.d/VsystemsshMdt /etc/rc4.d/S97VsystemsshMdt
  • sh -c ln -s /etc/init.d/VsystemsshMdt /etc/rc5.d/S97VsystemsshMdt
  • ln -s /etc/init.d/VsystemsshMdt /etc/rc5.d/S97VsystemsshMdt
  • sh -c mkdir -p /usr/bin/bsd-port
  • mkdir -p /usr/bin/bsd-port
  • sh -c cp -f <SAMPLE_FULL_PATH> /usr/bin/bsd-port/knerl
  • cp -f <SAMPLE_FULL_PATH> /usr/bin/bsd-port/knerl
  • sh -c /usr/bin/bsd-port/knerl
  • /usr/bin/bsd-port/knerl
  • sh -c mkdir -p /usr/bin
  • mkdir -p /usr/bin
  • sh -c cp -f <SAMPLE_FULL_PATH> /usr/bin/pythno
  • cp -f <SAMPLE_FULL_PATH> /usr/bin/pythno
  • sh -c /usr/bin/pythno
  • /usr/bin/pythno
  • sh -c insmod /usr/lib/xpacket.ko
  • insmod /usr/lib/xpacket.ko
  • sh -c ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
  • ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
  • sh -c ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
  • ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
  • sh -c ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
  • ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
  • sh -c ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
  • ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
  • sh -c ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
  • ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
  • sh -c mkdir -p /usr/bin/dpkgd
  • mkdir -p /usr/bin/dpkgd
  • sh -c cp -f /bin/netstat /usr/bin/dpkgd/netstat
  • cp -f /bin/netstat /usr/bin/dpkgd/netstat
  • sh -c mkdir -p /bin
  • mkdir -p /bin
  • sh -c cp -f /usr/bin/bsd-port/knerl /bin/netstat
  • cp -f /usr/bin/bsd-port/knerl /bin/netstat
  • sh -c chmod 0755 /bin/netstat
  • chmod 0755 /bin/netstat
  • sh -c cp -f /bin/ps /usr/bin/dpkgd/ps
  • cp -f /bin/ps /usr/bin/dpkgd/ps
  • sh -c cp -f /usr/bin/bsd-port/knerl /bin/ps
  • cp -f /usr/bin/bsd-port/knerl /bin/ps
  • sh -c chmod 0755 /bin/ps
  • chmod 0755 /bin/ps
  • sh -c cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
  • cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
  • sh -c cp -f /usr/bin/bsd-port/knerl /usr/bin/lsof
  • cp -f /usr/bin/bsd-port/knerl /usr/bin/lsof
  • sh -c chmod 0755 /usr/bin/lsof
  • chmod 0755 /usr/bin/lsof
Performs operations with the file system:
Modifies file access rights:
  • /bin/netstat
  • /bin/ps
  • /usr/bin/lsof
Creates folders:
  • /usr/bin/bsd-port
  • /usr/bin/dpkgd
Creates or modifies files:
  • /root/vga.conf
  • /usr/bin/bsd-port/knerl
  • /tmp/notify.file
  • /usr/bin/pythno
  • /usr/bin/bsd-port/knerl.conf
  • /root/conf.n
  • /usr/bin/dpkgd/netstat
  • /usr/bin"/idus.log
  • /root/idus.log
  • /usr/bin/dpkgd/ps
  • /usr/bin/dpkgd/lsof
Deletes files:
  • /root/apsh.conf"
  • /usr/bin/bsd-port/udevd.conf"
  • /tmp/notify.file"
Network activity:
Establishes connection:
  • 11#.##.197.229:685
DNS ASK:
  • td####10.gnway.cc
  • sh###aozhe.com
Sends data to the following servers:
  • 11#.##.197.229:685
Other:
Collects OS information
Collects CPU information
Collects RAM information
Collects information about network activity

Curing recommendations


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