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Linux.Siggen.7665

Added to the Dr.Web virus database: 2024-06-18

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /var/spool/cron/crontabs/root
Malicious functions:
Substitutes application name for:
  • <SAMPLE>
Launches processes:
  • crontab -
  • /bin/sh -c chmod 777 /var/hidden.sh; echo \x27*/5 * * * * /bin/bash /root/hidden.sh\x27 | crontab -
  • chmod 777 /var/hidden.sh
Performs operations with the file system:
Modifies file access rights:
  • /tmp/_MEIg0VMKX/lib-dynload/_bz2.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_cn.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_hk.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_iso2022.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_jp.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_kr.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_tw.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_multibytecodec.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/resource.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/libbz2.so.1.0
  • /tmp/_MEIg0VMKX/libexpat.so.1
  • /tmp/_MEIg0VMKX/libpython3.7m.so.1.0
  • /tmp/_MEIg0VMKX/libz.so.1
  • /tmp/_MEIg0VMKX/base_library.zip
  • /var/hidden.sh
  • /var/spool/cron/crontabs/tmp.Did3A6
Creates folders:
  • /tmp/_MEIg0VMKX
  • /tmp/_MEIg0VMKX/lib-dynload
Deletes folders:
  • /tmp/_MEIg0VMKX/lib-dynload
  • /tmp/_MEIg0VMKX
Creates or modifies files:
  • /tmp/_MEIg0VMKX/lib-dynload/_bz2.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_cn.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_hk.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_iso2022.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_jp.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_kr.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_tw.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_multibytecodec.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/resource.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/libbz2.so.1.0
  • /tmp/_MEIg0VMKX/libexpat.so.1
  • /tmp/_MEIg0VMKX/libpython3.7m.so.1.0
  • /tmp/_MEIg0VMKX/libz.so.1
  • /tmp/_MEIg0VMKX/base_library.zip
  • /var/message.txt
  • /var/hidden.sh
  • /var/spool/cron/crontabs/tmp.Did3A6
  • /root/readme.txt
Deletes files:
  • /tmp/_MEIg0VMKX/libpython3.7m.so.1.0
  • /tmp/_MEIg0VMKX/libexpat.so.1
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_cn.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_hk.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_iso2022.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_jp.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_bz2.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_multibytecodec.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_tw.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/resource.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/lib-dynload/_codecs_kr.cpython-37m-x86_64-linux-gnu.so
  • /tmp/_MEIg0VMKX/libz.so.1
  • /tmp/_MEIg0VMKX/base_library.zip
  • /tmp/_MEIg0VMKX/libbz2.so.1.0
Changes time of creation/access/modification of files:
  • /var/spool/cron/crontabs

Curing recommendations

Linux

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