Analysis

  • max time kernel
    149s
  • max time network
    131s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20240226-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20240226-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    04-05-2024 10:08

General

  • Target

    f57f99f56834d73211bac97f4ec2dc5c.elf

  • Size

    1.1MB

  • MD5

    f57f99f56834d73211bac97f4ec2dc5c

  • SHA1

    314fff2c301fb120ce100e812e3ef4b31580551d

  • SHA256

    a7d548bcb9a58a58b5dfb9f059b302131fc0107a094f1fbb53c7d525b9327b60

  • SHA512

    c2785a0b3231ccd5c217f6ec38aa8ca3ece2cc3a3364a3271582ba49cf9ac8a5dfd163765c6284ba72c9bd4e711cc059ba328e6a7ad0b1adeb7e85447b9350a8

  • SSDEEP

    24576:4vRE7caCfKGPqVEDNLFxKsfa1I+gIGYuuCol7r:4vREKfPqVE5jKsfa1RHGVo7r

Malware Config

Signatures

  • MrBlack Trojan

    IoT botnet which infects routers to be used for DDoS attacks.

  • MrBlack trojan 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies init.d 1 TTPs 2 IoCs

    Adds/modifies system service, likely for persistence.

  • Reads system routing table 1 TTPs 1 IoCs

    Gets active network interfaces from /proc virtual filesystem.

  • Write file to user bin folder 1 TTPs 8 IoCs
  • Writes file to system bin folder 1 TTPs 1 IoCs
  • Checks CPU configuration 1 TTPs 2 IoCs

    Checks CPU information which indicate if the system is a virtual machine.

  • Reads system network configuration 1 TTPs 4 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Reads runtime system information 17 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 8 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/f57f99f56834d73211bac97f4ec2dc5c.elf
    /tmp/f57f99f56834d73211bac97f4ec2dc5c.elf
    1⤵
    • Modifies init.d
    • Reads system routing table
    • Write file to user bin folder
    • Checks CPU configuration
    • Reads system network configuration
    • Reads runtime system information
    • Writes file to tmp directory
    PID:1569
    • /bin/sh
      sh -c "ln -s /etc/init.d/VsystemsshMmt /etc/rc1.d/S97VsystemsshMmt"
      2⤵
        PID:1598
        • /bin/ln
          ln -s /etc/init.d/VsystemsshMmt /etc/rc1.d/S97VsystemsshMmt
          3⤵
            PID:1599
        • /bin/sh
          sh -c "ln -s /etc/init.d/VsystemsshMmt /etc/rc2.d/S97VsystemsshMmt"
          2⤵
            PID:1600
            • /bin/ln
              ln -s /etc/init.d/VsystemsshMmt /etc/rc2.d/S97VsystemsshMmt
              3⤵
                PID:1601
            • /bin/sh
              sh -c "ln -s /etc/init.d/VsystemsshMmt /etc/rc3.d/S97VsystemsshMmt"
              2⤵
                PID:1602
                • /bin/ln
                  ln -s /etc/init.d/VsystemsshMmt /etc/rc3.d/S97VsystemsshMmt
                  3⤵
                    PID:1603
                • /bin/sh
                  sh -c "ln -s /etc/init.d/VsystemsshMmt /etc/rc4.d/S97VsystemsshMmt"
                  2⤵
                    PID:1604
                    • /bin/ln
                      ln -s /etc/init.d/VsystemsshMmt /etc/rc4.d/S97VsystemsshMmt
                      3⤵
                        PID:1605
                    • /bin/sh
                      sh -c "ln -s /etc/init.d/VsystemsshMmt /etc/rc5.d/S97VsystemsshMmt"
                      2⤵
                        PID:1606
                        • /bin/ln
                          ln -s /etc/init.d/VsystemsshMmt /etc/rc5.d/S97VsystemsshMmt
                          3⤵
                            PID:1607
                        • /bin/sh
                          sh -c "mkdir -p /usr/bin/bsd-port"
                          2⤵
                            PID:1608
                            • /bin/mkdir
                              mkdir -p /usr/bin/bsd-port
                              3⤵
                              • Reads runtime system information
                              PID:1609
                          • /bin/sh
                            sh -c "cp -f /tmp/f57f99f56834d73211bac97f4ec2dc5c.elf /usr/bin/bsd-port/recei"
                            2⤵
                              PID:1610
                              • /bin/cp
                                cp -f /tmp/f57f99f56834d73211bac97f4ec2dc5c.elf /usr/bin/bsd-port/recei
                                3⤵
                                • Write file to user bin folder
                                • Reads runtime system information
                                PID:1611
                            • /bin/sh
                              sh -c /usr/bin/bsd-port/recei
                              2⤵
                                PID:1613
                                • /usr/bin/bsd-port/recei
                                  /usr/bin/bsd-port/recei
                                  3⤵
                                  • Executes dropped EXE
                                  • Modifies init.d
                                  • Write file to user bin folder
                                  • Checks CPU configuration
                                  • Reads system network configuration
                                  • Reads runtime system information
                                  PID:1614
                                  • /bin/sh
                                    sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
                                    4⤵
                                      PID:1620
                                      • /bin/ln
                                        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
                                        5⤵
                                          PID:1621
                                      • /bin/sh
                                        sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
                                        4⤵
                                          PID:1622
                                          • /bin/ln
                                            ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
                                            5⤵
                                              PID:1623
                                          • /bin/sh
                                            sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
                                            4⤵
                                              PID:1624
                                              • /bin/ln
                                                ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
                                                5⤵
                                                  PID:1625
                                              • /bin/sh
                                                sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
                                                4⤵
                                                  PID:1626
                                                  • /bin/ln
                                                    ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
                                                    5⤵
                                                      PID:1627
                                                  • /bin/sh
                                                    sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
                                                    4⤵
                                                      PID:1628
                                                      • /bin/ln
                                                        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
                                                        5⤵
                                                          PID:1629
                                                      • /bin/sh
                                                        sh -c "mkdir -p /usr/bin/dpkgd"
                                                        4⤵
                                                          PID:1635
                                                          • /bin/mkdir
                                                            mkdir -p /usr/bin/dpkgd
                                                            5⤵
                                                            • Reads runtime system information
                                                            PID:1637
                                                        • /bin/sh
                                                          sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
                                                          4⤵
                                                            PID:1638
                                                            • /bin/cp
                                                              cp -f /bin/ps /usr/bin/dpkgd/ps
                                                              5⤵
                                                              • Write file to user bin folder
                                                              • Reads runtime system information
                                                              PID:1639
                                                          • /bin/sh
                                                            sh -c "mkdir -p /bin"
                                                            4⤵
                                                              PID:1641
                                                              • /bin/mkdir
                                                                mkdir -p /bin
                                                                5⤵
                                                                • Reads runtime system information
                                                                PID:1642
                                                            • /bin/sh
                                                              sh -c "cp -f /usr/bin/bsd-port/recei /bin/ps"
                                                              4⤵
                                                                PID:1644
                                                                • /bin/cp
                                                                  cp -f /usr/bin/bsd-port/recei /bin/ps
                                                                  5⤵
                                                                  • Writes file to system bin folder
                                                                  • Reads runtime system information
                                                                  PID:1645
                                                              • /bin/sh
                                                                sh -c "chmod 0755 /bin/ps"
                                                                4⤵
                                                                  PID:1646
                                                                  • /bin/chmod
                                                                    chmod 0755 /bin/ps
                                                                    5⤵
                                                                      PID:1647
                                                                  • /bin/sh
                                                                    sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
                                                                    4⤵
                                                                      PID:1649
                                                                      • /bin/cp
                                                                        cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
                                                                        5⤵
                                                                        • Write file to user bin folder
                                                                        • Reads runtime system information
                                                                        PID:1650
                                                                    • /bin/sh
                                                                      sh -c "mkdir -p /usr/bin"
                                                                      4⤵
                                                                        PID:1652
                                                                        • /bin/mkdir
                                                                          mkdir -p /usr/bin
                                                                          5⤵
                                                                          • Reads runtime system information
                                                                          PID:1653
                                                                      • /bin/sh
                                                                        sh -c "cp -f /usr/bin/bsd-port/recei /usr/bin/lsof"
                                                                        4⤵
                                                                          PID:1654
                                                                          • /bin/cp
                                                                            cp -f /usr/bin/bsd-port/recei /usr/bin/lsof
                                                                            5⤵
                                                                            • Write file to user bin folder
                                                                            • Reads runtime system information
                                                                            PID:1655
                                                                        • /bin/sh
                                                                          sh -c "chmod 0755 /usr/bin/lsof"
                                                                          4⤵
                                                                            PID:1657
                                                                            • /bin/chmod
                                                                              chmod 0755 /usr/bin/lsof
                                                                              5⤵
                                                                                PID:1658
                                                                            • /bin/sh
                                                                              sh -c "insmod /usr/lib/xpacket.ko"
                                                                              4⤵
                                                                                PID:1659
                                                                                • /sbin/insmod
                                                                                  insmod /usr/lib/xpacket.ko
                                                                                  5⤵
                                                                                  • Reads runtime system information
                                                                                  PID:1661
                                                                          • /bin/sh
                                                                            sh -c "mkdir -p /usr/bin"
                                                                            2⤵
                                                                              PID:1616
                                                                              • /bin/mkdir
                                                                                mkdir -p /usr/bin
                                                                                3⤵
                                                                                • Reads runtime system information
                                                                                PID:1617
                                                                            • /bin/sh
                                                                              sh -c "cp -f /tmp/f57f99f56834d73211bac97f4ec2dc5c.elf /usr/bin/oracle"
                                                                              2⤵
                                                                                PID:1618
                                                                                • /bin/cp
                                                                                  cp -f /tmp/f57f99f56834d73211bac97f4ec2dc5c.elf /usr/bin/oracle
                                                                                  3⤵
                                                                                  • Write file to user bin folder
                                                                                  • Reads runtime system information
                                                                                  PID:1619
                                                                              • /bin/sh
                                                                                sh -c /usr/bin/oracle
                                                                                2⤵
                                                                                  PID:1631
                                                                                  • /usr/bin/oracle
                                                                                    /usr/bin/oracle
                                                                                    3⤵
                                                                                    • Executes dropped EXE
                                                                                    • Writes file to tmp directory
                                                                                    PID:1632
                                                                                • /bin/sh
                                                                                  sh -c "insmod /usr/lib/xpacket.ko"
                                                                                  2⤵
                                                                                    PID:1634
                                                                                    • /sbin/insmod
                                                                                      insmod /usr/lib/xpacket.ko
                                                                                      3⤵
                                                                                      • Reads runtime system information
                                                                                      PID:1636

                                                                                Network

                                                                                MITRE ATT&CK Enterprise v15

                                                                                Replay Monitor

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                                                                                Downloads

                                                                                • /etc/init.d/VsystemsshMmt

                                                                                  Filesize

                                                                                  54B

                                                                                  MD5

                                                                                  780d1e94fbf15a6e57e7ff8d970ee4bf

                                                                                  SHA1

                                                                                  e7d237d21609781d96de3aebc496990290912422

                                                                                  SHA256

                                                                                  ca7a6faf512c369e20446026ac2f5bc03fab12d58e983877bfda2fce483cf512

                                                                                  SHA512

                                                                                  d38c1c89c140b17aa93142440a00a9dc328daf0bbe1c3664cf9c08ddaad1eaf3ae5c2d803b8cc5bfad2c35f80a65cf929335dfe31bd4d1ba1fb3fa51b3c3ed01

                                                                                • /etc/init.d/selinux

                                                                                  Filesize

                                                                                  36B

                                                                                  MD5

                                                                                  57cde9c165195cfb90c212057795ed49

                                                                                  SHA1

                                                                                  d77d9895306eb09ad9b54588fb7998c79c671563

                                                                                  SHA256

                                                                                  3e3488e9c63dfadffd594301e2192418b158238bfb8f83d6702123d72892cf36

                                                                                  SHA512

                                                                                  de9af53a508167cbbb820a99c2742918ec5b8c83877b77e43e4b441019311685647f47fb4666ba53ecef4e6a2d5514eb67981d471ddf173b04848609b3c0c00d

                                                                                • /tmp/Dest.cfg

                                                                                  Filesize

                                                                                  4B

                                                                                  MD5

                                                                                  7bd28f15a49d5e5848d6ec70e584e625

                                                                                  SHA1

                                                                                  d2fce7d4fae7323ea1b94f177e0a41a42fe0dd09

                                                                                  SHA256

                                                                                  aded40e220d2587b0ef1f88302a192d411bc55ddff1c4d818177777d6060a490

                                                                                  SHA512

                                                                                  f0ce80170e4bfc2929af244040c4d5dd5d317e80d3cac9883f162e55478b9825d07aa9114b8bb48f74fe28396ee02a2c59710b9d1109b6456ce4593cb1659d67

                                                                                • /tmp/notify.file

                                                                                  Filesize

                                                                                  41B

                                                                                  MD5

                                                                                  dcde7e8ce1b38785cd5d991edc31fee0

                                                                                  SHA1

                                                                                  857dce373987a8c7483829525c3c2f7b26ee506f

                                                                                  SHA256

                                                                                  cfc55c6c3cb3b4e530b9656b261c18b214c9dfad659c856317b47078e211032b

                                                                                  SHA512

                                                                                  5ee489b47fb04b2742eb61e72d805add50d78caf19b1dd7da4757a9987cd11c9e4028f77881b96888d54139343bf0ece1265da8406cce78424a54bd38201a74d

                                                                                • /usr/bin/bsd-port/recei

                                                                                  Filesize

                                                                                  1.1MB

                                                                                  MD5

                                                                                  f57f99f56834d73211bac97f4ec2dc5c

                                                                                  SHA1

                                                                                  314fff2c301fb120ce100e812e3ef4b31580551d

                                                                                  SHA256

                                                                                  a7d548bcb9a58a58b5dfb9f059b302131fc0107a094f1fbb53c7d525b9327b60

                                                                                  SHA512

                                                                                  c2785a0b3231ccd5c217f6ec38aa8ca3ece2cc3a3364a3271582ba49cf9ac8a5dfd163765c6284ba72c9bd4e711cc059ba328e6a7ad0b1adeb7e85447b9350a8

                                                                                • /usr/bin/dpkgd/lsof

                                                                                  Filesize

                                                                                  159KB

                                                                                  MD5

                                                                                  e093dc78225e2a0a25e3b137c1c1e442

                                                                                  SHA1

                                                                                  c29497cfaae729eb576875e4fdfa400640ab16be

                                                                                  SHA256

                                                                                  1190f4dbc7be174de8fd4096c9bf7a28eebfac937d308b7cc533be4a1240d26e

                                                                                  SHA512

                                                                                  fe1cc7a65327732eaaee89f427c10239ba822430e34177842f4681068d78d404b1830d808a2a71b1efcc5f126c6d8c053512237421173aaa150e215a672da6f0

                                                                                • /usr/bin/dpkgd/ps

                                                                                  Filesize

                                                                                  130KB

                                                                                  MD5

                                                                                  558edc26f8a38fa9788220b9af8a73e7

                                                                                  SHA1

                                                                                  3024d44e580e9c67f32f6c585d50e2a6cc9a7cac

                                                                                  SHA256

                                                                                  b76435c80333d2c1fd18e0e7682f1c9dfb5da8d507e93e3c416f54b481c428d5

                                                                                  SHA512

                                                                                  edaa425b441044f015e8f68fffa1664e42372d00dd0e7b0924d24ce947aa8e5f96b3bdc326fa2f8b978e3fcf638a1ceca45a223735db73f1607df66990feb56f