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Linux.Siggen.330

Added to the Dr.Web virus database: 2017-12-23

Virus description added:

Technical Information

Malicious functions:
Gains root privileges
Launches itself as a daemon
Launches processes:
  • /usr/bin/Mail x -s x -c
  • /usr/sbin/sendmail send-mail -i -- x
  • /usr/sbin/exim4 #-E
  • /usr/sbin/exim4 -Mc 1eSmuH-0000BR-E7
Performs operations with the file system:
Modifies file access rights:
  • /var/spool/exim4/input/1eSmuH-0000BR-E7-D
  • /var/spool/exim4/input/hdr.709
  • /var/spool/exim4/msglog/1eSmuH-0000BR-E7
  • /var/spool/exim4/input/1eSmuH-0000BR-E7-J
  • /var/mail/user
Creates symlinks:
  • /var/mail/user.lock"
Creates or modifies files:
  • /tmp/mail.RsXXXXTMqUMw
  • /tmp/mail.RsXXXX0SYYI9
  • /tmp/mail.RsXXXX0SYYI9 (deleted)
  • /var/spool/exim4/input//1eSmuH-0000BR-E7-D
  • /var/spool/exim4/input/1eSmuH-0000BR-E7-D
  • /var/spool/exim4/input//hdr.709
  • /var/spool/exim4/input/hdr.709
  • /var/spool/exim4/msglog//1eSmuH-0000BR-E7
  • /var/spool/exim4/msglog/1eSmuH-0000BR-E7
  • /var/log/exim4/mainlog
  • /root/dead.letter
  • /var/spool/exim4/db/retry.lockfile
  • /var/spool/exim4/input//1eSmuH-0000BR-E7-J
  • /var/mail/user.lock.box-amd64.5a3e87e2.000002c9
  • /var/mail/user
  • /var/spool/exim4/input/1eSmuH-0000BR-E7-J
Deletes files:
  • /tmp/mail.RsXXXXTMqUMw"
  • /tmp/mail.RsXXXX0SYYI9"
  • /var/mail/user.lock.box-amd64.5a3e87e2.000002c9"
  • /var/mail/user.lock"
  • /var/spool/exim4/msglog//1eSmuH-0000BR-E7"
  • /var/spool/exim4/input//1eSmuH-0000BR-E7-D"
  • /var/spool/exim4/input//1eSmuH-0000BR-E7-H"
  • /var/spool/exim4/input//1eSmuH-0000BR-E7-J"
Network activity:
Establishes connection:
  • <LOCAL_DNS_SERVER>
DNS ASK:
  • bo##amd64
Other:
Collects CPU information

Curing recommendations


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