Overview

overview

10

Static

static

10

de959af4e1...12f2bb

linux_mipsel

9

Analysis

  • max time kernel
    14105s
  • max time network
    152s
  • platform
    linux_mipsel
  • resource
    debian9-mipsel-en-20211208
  • submitted
    20-05-2022 23:02

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General

  • Target

    de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb

  • Size

    358KB

  • MD5

    639fc83ecdf903c5565b0328d4375e12

  • SHA1

    7cbfed277c84d45641fc19852fd27193de2cffc8

  • SHA256

    de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb

  • SHA512

    3d2b151d71f72dc80db66697a834df6bba4e7a3bfeb048c992ad564dce5b432658b10f50c351b69e6563e75c502440d0d4720ca769d99ae4dd15e45ee7ff1cec

Score
9/10
antivmpersistence

Malware Config

Signatures

  • Attempts to identify hypervisor via CPU configuration 1 TTPs 2 IoCs

    Checks CPU information for indicators that the system is a virtual machine.

    antivm
  • Modifies hosts file 1 IoCs

    Adds to hosts file used for mapping hosts to IP addresses.

  • Writes DNS configuration 1 TTPs 1 IoCs

    Writes data to DNS resolver config file.

  • Modifies init.d 1 TTPs 1 IoCs

    Adds/modifies system service, likely for persistence.

    persistence
  • Modifies rc script 1 TTPs 4 IoCs

    Adding/modifying system rc scripts is a common persistence mechanism.

    persistence
  • Reads runtime system information 8 IoCs

    Reads data from /proc virtual filesystem.

Processes

  • ./de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb
    ./de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb
    1⤵
    • Attempts to identify hypervisor via CPU configuration
    PID:331
    • /bin/sh
      /bin/sh -c "chmod +x /etc/rc.local"
      2⤵
        PID:332
        • /bin/chmod
          chmod +x /etc/rc.local
          3⤵
            PID:333
        • /bin/sh
          /bin/sh -c "mv /tmp/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb /etc/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb"
          2⤵
            PID:334
            • /bin/mv
              mv /tmp/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb /etc/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb
              3⤵
              • Reads runtime system information
              PID:336
          • /bin/sh
            /bin/sh -c "cd /etc;chmod 777 de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb"
            2⤵
              PID:340
              • /bin/chmod
                chmod 777 de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb
                3⤵
                  PID:341
              • /bin/sh
                /bin/sh -c "sed -i -e '/exit/d' /etc/rc.local"
                2⤵
                  PID:342
                  • /bin/sed
                    sed -i -e /exit/d /etc/rc.local
                    3⤵
                    • Modifies rc script
                    • Reads runtime system information
                    PID:343
                • /bin/sh
                  /bin/sh -c "sed -i -e '/^ | | \$/d' /etc/rc.local"
                  2⤵
                    PID:344
                    • /bin/sed
                      sed -i -e "/^ | | \$/d" /etc/rc.local
                      3⤵
                      • Reads runtime system information
                      PID:345
                  • /bin/sh
                    /bin/sh -c "sed -i -e '/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb/d' /etc/rc.local"
                    2⤵
                      PID:346
                      • /bin/sed
                        sed -i -e /de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb/d /etc/rc.local
                        3⤵
                        • Modifies rc script
                        • Reads runtime system information
                        PID:347
                    • /bin/sh
                      /bin/sh -c "sed -i -e '2 i/etc/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb reboot' /etc/rc.local"
                      2⤵
                        PID:348
                        • /bin/sed
                          sed -i -e "2 i/etc/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb reboot" /etc/rc.local
                          3⤵
                          • Modifies rc script
                          • Reads runtime system information
                          PID:349
                      • /bin/sh
                        /bin/sh -c "sed -i -e '2 i/etc/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb start' /etc/rc.d/rc.local"
                        2⤵
                          PID:350
                          • /bin/sed
                            sed -i -e "2 i/etc/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb start" /etc/rc.d/rc.local
                            3⤵
                            • Modifies rc script
                            • Reads runtime system information
                            PID:351
                        • /bin/sh
                          /bin/sh -c "sed -i -e '2 i/etc/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb start' /etc/init.d/boot.local"
                          2⤵
                            PID:352
                            • /bin/sed
                              sed -i -e "2 i/etc/de959af4e13c5a0b9799ffecbbee43a30f21763f784262addc650a41ca12f2bb start" /etc/init.d/boot.local
                              3⤵
                              • Modifies init.d
                              • Reads runtime system information
                              PID:353

                        Network

                        MITRE ATT&CK Matrix ATT&CK v6

                        Initial Access

                        Execution

                        Persistence

                        Boot or Logon Autostart Execution

                        2
                        T1547

                        Privilege Escalation

                        Boot or Logon Autostart Execution

                        2
                        T1547

                        Defense Evasion

                        Virtualization/Sandbox Evasion

                        1
                        T1497

                        Credential Access

                        Discovery

                        Virtualization/Sandbox Evasion

                        1
                        T1497

                        Lateral Movement

                        Collection

                        Exfiltration

                        Command and Control

                        Dynamic Resolution

                        1
                        T1568

                        Impact

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                        Downloads