Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20260513-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20260513-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    22/07/2026, 11:16

General

  • Target
    .rsync/b/run
  • Size 73KB
  • Sample260722-nc84aaeb43
  • SHA256 bbcb8075b98d143c022d8ca427a42c439ab72464f5335c10514ae959a4e743ba
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10

Malware Config

Signatures

  • Attempts to change immutable files 2 IoCs

    Modifies inode attributes on the filesystem to allow changing of immutable files.

  • Changes its process name 2 IoCs

Processes

  • /tmp/.rsync/b/run
    /tmp/.rsync/b/run
    1⤵
      PID:1506
      • /bin/sleep
        sleep 5
        2⤵
          PID:1508
        • /usr/bin/nohup
          nohup ./stop
          2⤵
            PID:1507
          • /tmp/.rsync/b/stop
            ./stop
            2⤵
              PID:1507
            • /usr/bin/base64
              base64 --decode
              2⤵
                PID:1517
              • /usr/bin/perl
                perl
                2⤵
                • Changes its process name
                PID:1518
                • /usr/local/sbin/uname
                  uname -a
                  3⤵
                    PID:1519
                  • /usr/local/bin/uname
                    uname -a
                    3⤵
                      PID:1519
                    • /usr/sbin/uname
                      uname -a
                      3⤵
                        PID:1519
                      • /usr/bin/uname
                        uname -a
                        3⤵
                          PID:1519
                        • /sbin/uname
                          uname -a
                          3⤵
                            PID:1519
                          • /bin/uname
                            uname -a
                            3⤵
                              PID:1519
                          • /usr/bin/perl
                            perl
                            2⤵
                            • Changes its process name
                            PID:1523
                            • /usr/local/sbin/uname
                              uname -a
                              3⤵
                                PID:1524
                              • /usr/local/bin/uname
                                uname -a
                                3⤵
                                  PID:1524
                                • /usr/sbin/uname
                                  uname -a
                                  3⤵
                                    PID:1524
                                  • /usr/bin/uname
                                    uname -a
                                    3⤵
                                      PID:1524
                                    • /sbin/uname
                                      uname -a
                                      3⤵
                                        PID:1524
                                      • /bin/uname
                                        uname -a
                                        3⤵
                                          PID:1524
                                      • /usr/bin/base64
                                        base64 --decode
                                        2⤵
                                          PID:1522
                                        • /usr/bin/chattr
                                          chattr -ia -R "~/.ssh"
                                          2⤵
                                          • Attempts to change immutable files
                                          PID:1526
                                        • /usr/bin/chattr
                                          chattr +ia -R "~/.ssh"
                                          2⤵
                                          • Attempts to change immutable files
                                          PID:1527

                                      Network

                                            MITRE ATT&CK Matrix

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