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Resubmissions

22/03/2024, 16:06

240322-tkbewafh2t 10

22/03/2024, 16:03

240322-thwb9sfg8t 10

22/03/2024, 08:44

240322-km5xtsae28 10

Analysis

  • max time kernel
    127s
  • max time network
    154s
  • 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
    22/03/2024, 16:06

General

  • Target

    9c65f61859b4b8ae00c79ddd63abf60d.elf

  • Size

    1.2MB

  • MD5

    9c65f61859b4b8ae00c79ddd63abf60d

  • SHA1

    ddf2c1d0abdef832ec746004dcdfd0cd800048ae

  • SHA256

    fab8944e3f0541c0ff149306ea74137f7c1e9c081670906844769a45aa7171b4

  • SHA512

    ed39ef838a9cdff65e891f65a98800ebd282645e13d9f83a6b620e3bc573a3fae8e5f312136b970977a4cdbdf5a0e600be401cf425a2d673d30c715562ab163e

  • SSDEEP

    24576:e845rGHu6gVJKG75oFpA0VWeX4a2y1q2rJp0:745vRVJKGtSA0VWeoZu9p0

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
  • Checks CPU configuration 1 TTPs 1 IoCs

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

  • Modifies init.d 1 TTPs 2 IoCs

    Adds/modifies system service, likely for persistence.

  • Write file to user bin folder 1 TTPs 8 IoCs
  • Writes file to system bin folder 1 TTPs 2 IoCs
  • Reads system network configuration 1 TTPs 1 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Reads runtime system information 22 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 4 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/9c65f61859b4b8ae00c79ddd63abf60d.elf
    /tmp/9c65f61859b4b8ae00c79ddd63abf60d.elf
    1⤵
      PID:1521
    • /bin/sh
      sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
      1⤵
        PID:1544
        • /bin/ln
          ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
          2⤵
            PID:1545
        • /bin/sh
          sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
          1⤵
            PID:1546
            • /bin/ln
              ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
              2⤵
                PID:1547
            • /bin/sh
              sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
              1⤵
                PID:1548
                • /bin/ln
                  ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
                  2⤵
                    PID:1549
                • /bin/sh
                  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
                  1⤵
                    PID:1550
                    • /bin/ln
                      ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
                      2⤵
                        PID:1551
                    • /bin/sh
                      sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
                      1⤵
                        PID:1552
                        • /bin/ln
                          ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
                          2⤵
                            PID:1553
                        • /bin/sh
                          sh -c "mkdir -p /usr/bin/bsd-port"
                          1⤵
                            PID:1670
                            • /bin/mkdir
                              mkdir -p /usr/bin/bsd-port
                              2⤵
                              • Reads runtime system information
                              PID:1671
                          • /bin/sh
                            sh -c "mkdir -p /usr/bin/bsd-port"
                            1⤵
                              PID:1672
                              • /bin/mkdir
                                mkdir -p /usr/bin/bsd-port
                                2⤵
                                • Reads runtime system information
                                PID:1673
                            • /bin/sh
                              sh -c "cp -f /tmp/9c65f61859b4b8ae00c79ddd63abf60d.elf /usr/bin/bsd-port/getty"
                              1⤵
                                PID:1674
                                • /bin/cp
                                  cp -f /tmp/9c65f61859b4b8ae00c79ddd63abf60d.elf /usr/bin/bsd-port/getty
                                  2⤵
                                  • Write file to user bin folder
                                  • Reads runtime system information
                                  PID:1675
                              • /bin/sh
                                sh -c /usr/bin/bsd-port/getty
                                1⤵
                                  PID:1885
                                  • /usr/bin/bsd-port/getty
                                    /usr/bin/bsd-port/getty
                                    2⤵
                                    • Executes dropped EXE
                                    PID:1886
                                • /bin/sh
                                  sh -c "mkdir -p /usr/bin"
                                  1⤵
                                    PID:1917
                                    • /bin/mkdir
                                      mkdir -p /usr/bin
                                      2⤵
                                      • Reads runtime system information
                                      PID:1918
                                  • /bin/sh
                                    sh -c "mkdir -p /usr/bin"
                                    1⤵
                                      PID:1919
                                      • /bin/mkdir
                                        mkdir -p /usr/bin
                                        2⤵
                                        • Reads runtime system information
                                        PID:1920
                                    • /bin/sh
                                      sh -c "cp -f /tmp/9c65f61859b4b8ae00c79ddd63abf60d.elf /usr/bin/.sshd"
                                      1⤵
                                        PID:1921
                                        • /bin/cp
                                          cp -f /tmp/9c65f61859b4b8ae00c79ddd63abf60d.elf /usr/bin/.sshd
                                          2⤵
                                          • Write file to user bin folder
                                          • Reads runtime system information
                                          PID:1922
                                      • /bin/sh
                                        sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
                                        1⤵
                                          PID:1923
                                          • /bin/ln
                                            ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
                                            2⤵
                                              PID:1924
                                          • /bin/sh
                                            sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
                                            1⤵
                                              PID:1925
                                              • /bin/ln
                                                ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
                                                2⤵
                                                  PID:1926
                                              • /bin/sh
                                                sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
                                                1⤵
                                                  PID:1927
                                                  • /bin/ln
                                                    ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
                                                    2⤵
                                                      PID:1928
                                                  • /bin/sh
                                                    sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
                                                    1⤵
                                                      PID:1929
                                                      • /bin/ln
                                                        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
                                                        2⤵
                                                          PID:1933
                                                      • /bin/sh
                                                        sh -c /usr/bin/.sshd
                                                        1⤵
                                                          PID:1931
                                                          • /usr/bin/.sshd
                                                            /usr/bin/.sshd
                                                            2⤵
                                                            • Executes dropped EXE
                                                            PID:1932
                                                        • /bin/sh
                                                          sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
                                                          1⤵
                                                            PID:1934
                                                            • /bin/ln
                                                              ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
                                                              2⤵
                                                                PID:1935
                                                            • /bin/sh
                                                              sh -c "mkdir -p /usr/bin/dpkgd"
                                                              1⤵
                                                                PID:1936
                                                                • /bin/mkdir
                                                                  mkdir -p /usr/bin/dpkgd
                                                                  2⤵
                                                                  • Reads runtime system information
                                                                  PID:1937
                                                              • /bin/sh
                                                                sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
                                                                1⤵
                                                                  PID:1938
                                                                  • /bin/cp
                                                                    cp -f /bin/ps /usr/bin/dpkgd/ps
                                                                    2⤵
                                                                    • Write file to user bin folder
                                                                    • Reads runtime system information
                                                                    PID:1939
                                                                • /bin/sh
                                                                  sh -c "mkdir -p /bin"
                                                                  1⤵
                                                                    PID:1940
                                                                    • /bin/mkdir
                                                                      mkdir -p /bin
                                                                      2⤵
                                                                      • Reads runtime system information
                                                                      PID:1941
                                                                  • /bin/sh
                                                                    sh -c "mkdir -p /bin"
                                                                    1⤵
                                                                      PID:1942
                                                                      • /bin/mkdir
                                                                        mkdir -p /bin
                                                                        2⤵
                                                                        • Reads runtime system information
                                                                        PID:1943
                                                                    • /bin/sh
                                                                      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
                                                                      1⤵
                                                                        PID:1944
                                                                        • /bin/cp
                                                                          cp -f /usr/bin/bsd-port/getty /bin/ps
                                                                          2⤵
                                                                          • Writes file to system bin folder
                                                                          • Reads runtime system information
                                                                          PID:1945
                                                                      • /bin/sh
                                                                        sh -c "chmod 0755 /bin/ps"
                                                                        1⤵
                                                                          PID:1946
                                                                          • /bin/chmod
                                                                            chmod 0755 /bin/ps
                                                                            2⤵
                                                                              PID:1947
                                                                          • /bin/sh
                                                                            sh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"
                                                                            1⤵
                                                                              PID:1948
                                                                              • /bin/cp
                                                                                cp -f /bin/ss /usr/bin/dpkgd/ss
                                                                                2⤵
                                                                                • Write file to user bin folder
                                                                                • Reads runtime system information
                                                                                PID:1949
                                                                            • /bin/sh
                                                                              sh -c "mkdir -p /bin"
                                                                              1⤵
                                                                                PID:1950
                                                                                • /bin/mkdir
                                                                                  mkdir -p /bin
                                                                                  2⤵
                                                                                  • Reads runtime system information
                                                                                  PID:1951
                                                                              • /bin/sh
                                                                                sh -c "mkdir -p /bin"
                                                                                1⤵
                                                                                  PID:1952
                                                                                  • /bin/mkdir
                                                                                    mkdir -p /bin
                                                                                    2⤵
                                                                                    • Reads runtime system information
                                                                                    PID:1953
                                                                                • /bin/sh
                                                                                  sh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"
                                                                                  1⤵
                                                                                    PID:1954
                                                                                    • /bin/cp
                                                                                      cp -f /usr/bin/bsd-port/getty /bin/ss
                                                                                      2⤵
                                                                                      • Writes file to system bin folder
                                                                                      • Reads runtime system information
                                                                                      PID:1955
                                                                                  • /bin/sh
                                                                                    sh -c "chmod 0755 /bin/ss"
                                                                                    1⤵
                                                                                      PID:1956
                                                                                      • /bin/chmod
                                                                                        chmod 0755 /bin/ss
                                                                                        2⤵
                                                                                          PID:1957
                                                                                      • /bin/sh
                                                                                        sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
                                                                                        1⤵
                                                                                          PID:1958
                                                                                          • /bin/cp
                                                                                            cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
                                                                                            2⤵
                                                                                            • Write file to user bin folder
                                                                                            • Reads runtime system information
                                                                                            PID:1959
                                                                                        • /bin/sh
                                                                                          sh -c "mkdir -p /usr/bin"
                                                                                          1⤵
                                                                                            PID:1960
                                                                                            • /bin/mkdir
                                                                                              mkdir -p /usr/bin
                                                                                              2⤵
                                                                                              • Reads runtime system information
                                                                                              PID:1961
                                                                                          • /bin/sh
                                                                                            sh -c "mkdir -p /usr/bin"
                                                                                            1⤵
                                                                                              PID:1962
                                                                                              • /bin/mkdir
                                                                                                mkdir -p /usr/bin
                                                                                                2⤵
                                                                                                • Reads runtime system information
                                                                                                PID:1963
                                                                                            • /bin/sh
                                                                                              sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
                                                                                              1⤵
                                                                                                PID:1964
                                                                                                • /bin/cp
                                                                                                  cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
                                                                                                  2⤵
                                                                                                  • Write file to user bin folder
                                                                                                  • Reads runtime system information
                                                                                                  PID:1965
                                                                                              • /bin/sh
                                                                                                sh -c "chmod 0755 /usr/bin/lsof"
                                                                                                1⤵
                                                                                                  PID:1966
                                                                                                  • /bin/chmod
                                                                                                    chmod 0755 /usr/bin/lsof
                                                                                                    2⤵
                                                                                                      PID:1967
                                                                                                  • /bin/sh
                                                                                                    sh -c "insmod /usr/bin/bsd-port/xpacket.ko"
                                                                                                    1⤵
                                                                                                      PID:1970
                                                                                                      • /sbin/insmod
                                                                                                        insmod /usr/bin/bsd-port/xpacket.ko
                                                                                                        2⤵
                                                                                                        • Reads runtime system information
                                                                                                        PID:1971

                                                                                                    Network

                                                                                                    MITRE ATT&CK Enterprise v15

                                                                                                    Replay Monitor

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                                                                                                    Downloads

                                                                                                    • /etc/init.d/DbSecuritySpt

                                                                                                      Filesize

                                                                                                      54B

                                                                                                      MD5

                                                                                                      c72f90e3e98d1e442f1c67250d65462e

                                                                                                      SHA1

                                                                                                      1226c9d54cd8f96cd14bdb3145b8e8feb552fac5

                                                                                                      SHA256

                                                                                                      933e302e728da769ffdf8f69c9dd2ed8519ef8bd832c94804446b4ad95f1b55e

                                                                                                      SHA512

                                                                                                      25e3d20741be4ceca8e8320e7853ece8224895f6b7ec3d624b84cb37c7989aff6d9ee83331f55ea42bd07a71840176fe0058c23ea25c792de5ad583d012e58ca

                                                                                                    • /etc/init.d/selinux

                                                                                                      Filesize

                                                                                                      36B

                                                                                                      MD5

                                                                                                      993cc15058142d96c3daf7852c3d5ee8

                                                                                                      SHA1

                                                                                                      0950b8b391b04dd3895ea33cd3141543ebd2525d

                                                                                                      SHA256

                                                                                                      8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

                                                                                                      SHA512

                                                                                                      0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

                                                                                                    • /tmp/gates.lod

                                                                                                      Filesize

                                                                                                      4B

                                                                                                      MD5

                                                                                                      3fb451ca2e89b3a13095b059d8705b15

                                                                                                      SHA1

                                                                                                      c718aa30a6ff882b7087ce4f1567e335ea77186e

                                                                                                      SHA256

                                                                                                      ff231d4dee9c91e9ead0253639c25479b934a352b052aa23ad05f6b79efa137b

                                                                                                      SHA512

                                                                                                      2a884cd727e33e07069954b36adfcf7444b94695a26af2410c66758b9412af486952e61193fac69ad338270598b10e2920b1f25563545280e3e87d678cbb7e25

                                                                                                    • /tmp/moni.lod

                                                                                                      Filesize

                                                                                                      4B

                                                                                                      MD5

                                                                                                      98c7242894844ecd6ec94af67ac8247d

                                                                                                      SHA1

                                                                                                      72a9500430e3b5bd0680cbdedd4ae13de468c35a

                                                                                                      SHA256

                                                                                                      a48622b535728587fd351763d1296c7ec9cb5bc6743d5f22b011d5b5c3ef688f

                                                                                                      SHA512

                                                                                                      7f0effe68daaf9bfa852d061f7b5c682e5da8707ee480c2c3b47838958bd45f2387cb4127aaa6342389894ec7cc4502c36ea6812ad96d335b62165f8bd9ba161

                                                                                                    • /tmp/notify.file

                                                                                                      Filesize

                                                                                                      41B

                                                                                                      MD5

                                                                                                      aada6ae77c35c99d34d3c1fa2bc89bd4

                                                                                                      SHA1

                                                                                                      eef93661c4caa0a32ec663a0462718d60d279fee

                                                                                                      SHA256

                                                                                                      55578939d73ca332c68f76d7e88818a529fee6990dfa757a9bf41a9735a56deb

                                                                                                      SHA512

                                                                                                      781ed7115d089dc7f57e85d2396da1c23041e5738d6e800393b80d2b4971dfcffabec57b1ee06c87228eee832b658a57dfc20cd5a534bd765760cd3d85526d85

                                                                                                    • /usr/bin/bsd-port/getty

                                                                                                      Filesize

                                                                                                      1.2MB

                                                                                                      MD5

                                                                                                      9c65f61859b4b8ae00c79ddd63abf60d

                                                                                                      SHA1

                                                                                                      ddf2c1d0abdef832ec746004dcdfd0cd800048ae

                                                                                                      SHA256

                                                                                                      fab8944e3f0541c0ff149306ea74137f7c1e9c081670906844769a45aa7171b4

                                                                                                      SHA512

                                                                                                      ed39ef838a9cdff65e891f65a98800ebd282645e13d9f83a6b620e3bc573a3fae8e5f312136b970977a4cdbdf5a0e600be401cf425a2d673d30c715562ab163e

                                                                                                    • /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

                                                                                                    • /usr/bin/dpkgd/ss

                                                                                                      Filesize

                                                                                                      136KB

                                                                                                      MD5

                                                                                                      1dc929b5f2cd12fe6a2fe71140d2a9e3

                                                                                                      SHA1

                                                                                                      f9995a92bb201b1b7738a39a38570ef0c40b52d2

                                                                                                      SHA256

                                                                                                      418aae1da62554afe9f260866267af328fd761b3fd6f90f0ea53d543e2fefc38

                                                                                                      SHA512

                                                                                                      fbed011c595084548db440dfbe485b7d27032a44a6ae9e141fe43f31c8c524ff9347135ab035deb441fca99e5a3794f7bb9194f148aa2f60f1547a7c67d47373