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Linux.Siggen.181

Added to the Dr.Web virus database: 2017-07-13

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/init.d/wipefs
  • /etc/rc.d/rc*.d/S01wipefs
  • /etc/crontab
Creates or modifies the following symlinks:
  • /etc/init.d/wipefs
  • /etc/rc0.d/S01wipefs
  • /etc/rc1.d/S01wipefs
  • /etc/rc2.d/S01wipefs
  • /etc/rc3.d/S01wipefs
  • /etc/rc4.d/S01wipefs
  • /etc/rc5.d/S01wipefs
  • /etc/rc6.d/S01wipefs
Malicious functions:
Launches itself as a daemon
Replaces the following system files:
  • /bin/ss
  • /bin/netstat
Launches processes:
  • sh -c
  • sh -c /tmp/tmpnam_KJpacI upgrade >/dev/null 2>&1; rm /tmp/tmpnam_KJpacI >/dev/null 2>&1
  • /tmp/tmpnam_KJpacI upgrade
  • cp -f <SAMPLE_FULL_PATH> /bin/wipefs
  • /bin/sh ##which ss 1>/dev/null 2>&1
  • which ss
  • /bin/sh ##which ss
  • ln -fs /bin/wipefs /etc/init.d/wipefs
  • ln -fs /etc/init.d/wipefs /etc/rc0.d/S01wipefs
  • ln -fs /etc/init.d/wipefs /etc/rc1.d/S01wipefs
  • ln -fs /etc/init.d/wipefs /etc/rc2.d/S01wipefs
  • ln -fs /etc/init.d/wipefs /etc/rc3.d/S01wipefs
  • ln -fs /etc/init.d/wipefs /etc/rc4.d/S01wipefs
  • /bin/sh ##which netstat 1>/dev/null 2>&1
  • ln -fs /etc/init.d/wipefs /etc/rc5.d/S01wipefs
  • which netstat
  • ln -fs /etc/init.d/wipefs /etc/rc6.d/S01wipefs
  • ln -fs /etc/init.d/wipefs /etc/rc.d/rc0.d/S01wipefs
  • ln -fs /etc/init.d/wipefs /etc/rc.d/rc1.d/S01wipefs
  • /bin/sh ##chattr -i /bin/ddus-uidgen /etc/init.d/acpidtd /etc/rc.d/rc*.d/S01acpidtd /bin/ss /bin/scss /bin/netstat /bin/scnetstat 1>/dev/null 2>&1
  • ln -fs /etc/init.d/wipefs /etc/rc.d/rc2.d/S01wipefs
  • chattr -i /bin/ddus-uidgen /etc/init.d/acpidtd /etc/rc.d/rc*.d/S01acpidtd /bin/ss /bin/scss /bin/netstat /bin/scnetstat
  • ln -fs /etc/init.d/wipefs /etc/rc.d/rc3.d/S01wipefs
  • ln -fs /etc/init.d/wipefs /etc/rc.d/rc4.d/S01wipefs
  • /bin/sh ##chmod +x /bin/scss 1>/dev/null 2>&1;
  • ln -fs /etc/init.d/wipefs /etc/rc.d/rc5.d/S01wipefs
  • chmod +x /bin/scss
  • ln -fs /etc/init.d/wipefs /etc/rc.d/rc6.d/S01wipefs
  • ##cp -f /tmp/tmpnam_KJpacI /bin/ss 1>/dev/null 2>&1;touch -r /bin/sh /bin/ss /bin/scss 1>/dev/null 2>&1;
  • touch -r /bin/sh /bin/wipefs /etc/init.d/wipefs /etc/rc.d/rc*.d/S01wipefs
  • cp -f /tmp/tmpnam_KJpacI /bin/ss
  • sh -c echo '0 */12 * * * root /bin/wipefs' >> /etc/crontab
  • sh -c sysctl -w vm.nr_hugepages=128 >/dev/null 2>&1
  • touch -r /bin/sh /bin/ss /bin/scss
  • sysctl -w vm.nr_hugepages=128
  • sh -c sysctl -p >/dev/null 2>&1
  • sysctl -p
  • /bin/sh ##chattr +i /bin/ddus-uidgen /etc/init.d/acpidtd /etc/rc.d/rc*.d/S01acpidtd /bin/ss /bin/scss /bin/netstat /bin/scnetstat 1>/dev/null 2>&1
  • chattr +i /bin/ddus-uidgen /etc/init.d/acpidtd /etc/rc.d/rc*.d/S01acpidtd /bin/ss /bin/scss /bin/netstat /bin/scnetstat
  • /bin/sh ##chmod +x /bin/scnetstat 1>/dev/null 2>&1;
  • chmod +x /bin/scnetstat
  • ##cp -f /tmp/tmpnam_KJpacI /bin/netstat 1>/dev/null 2>&1;touch -r /bin/sh /bin/netstat /bin/scnetstat 1>/dev/null 2>&1;
  • cp -f /tmp/tmpnam_KJpacI /bin/netstat
  • touch -r /bin/sh /bin/netstat /bin/scnetstat
  • rm /tmp/tmpnam_KJpacI
Performs operations with the file system:
Modifies file access rights:
  • /tmp/tmpnam_KJpacI
  • /bin/scss
  • /bin/scnetstat
Creates or modifies files:
  • /tmp/tmpnam_KJpacI
  • /etc/resolv.conf
  • /bin/wipefs
  • /bin/scss
  • /proc/sys/vm/nr_hugepages
  • /bin/scnetstat
Deletes files:
  • /tmp/tmpnam_KJpacI
Network activity:
Establishes connection:
  • 5.#.##.111:45560
DNS ASK:
  • xm#.###l.minergate.com
Sends data to the following servers:
  • 5.#.##.111:45560
Receives data from the following servers:
  • 5.#.##.111:45560
Other:
Collects CPU information

Curing recommendations


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