Overview

overview

10

Static

static

10

a066a4516c...de.elf

ubuntu-22.04-amd64

10

Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    ubuntu-22.04_amd64
  • resource
    ubuntu2204-amd64-20250307-en
  • resource tags

    arch:amd64arch:i386image:ubuntu2204-amd64-20250307-enkernel:5.15.0-105-genericlocale:en-usos:ubuntu-22.04-amd64system
  • submitted
    22/03/2025, 03:29

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    a066a4516cda5a762adbcd98681d94c3a86451f92c705e8e0ae4a863984b21de.elf

  • Size

    5.2MB

  • MD5

    a7b189688ee7fb703c4885af25bb4702

  • SHA1

    0dd7bb7f5483d7919646189a9dbdc0a1dcfe1d8d

  • SHA256

    a066a4516cda5a762adbcd98681d94c3a86451f92c705e8e0ae4a863984b21de

  • SHA512

    a5c0a16588b5806fe05e8213f8a7cc98fd02cffed04591e9fd53fbb934c2958fff16fc1a877c383abd6567b939e92dabbc09c47462981a20545221a597f4a5a9

  • SSDEEP

    49152:7Xa6xzZWhrb/T4vO90dL3BmAFd4A64nsfJPJ6TdXnT9aqeJaz2xNkapDnYRQoj1q:b2ONLBzSxtSTcElHz

Score
10/10
kaijidefense_evasiondiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Extracted

Family

kaiji

C2

156.225.31.175:808

Signatures

  • Kaiji 1 IoCs

    Kaiji payload

  • Kaiji family
    kaiji
  • kaiji_chaosbot 1 IoCs

    Chaos-variant payload

  • Executes dropped EXE 1 IoCs
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

    Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

    defense_evasion
  • Creates/modifies Cron job 1 TTPs 1 IoCs

    Cron allows running tasks on a schedule, and is commonly used for malware persistence.

    executionpersistenceprivilege_escalation
  • Creates/modifies environment variables 1 TTPs 3 IoCs

    Creating/modifying environment variables is a common persistence mechanism.

    persistenceprivilege_escalationdefense_evasion
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies init.d 2 TTPs 2 IoCs

    Adds/modifies system service, likely for persistence.

    persistence
  • Modifies systemd 2 TTPs 1 IoCs

    Adds/ modifies systemd service files. Likely to achieve persistence.

    persistenceprivilege_escalation
  • Write file to user bin folder 6 IoCs
    persistence
  • Modifies Bash startup script 2 TTPs 3 IoCs
    persistence
  • Changes its process name 1 IoCs
  • Enumerates kernel/hardware configuration 1 TTPs 2 IoCs

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

    discovery
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery
  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

Processes

  • /tmp/a066a4516cda5a762adbcd98681d94c3a86451f92c705e8e0ae4a863984b21de.elf
    /tmp/a066a4516cda5a762adbcd98681d94c3a86451f92c705e8e0ae4a863984b21de.elf
    1⤵
    • Enumerates kernel/hardware configuration
    PID:1570
    • /usr/bin/sh
      sh -c "/etc/32678&"
      2⤵
      • Executes dropped EXE
      PID:1574
    • /usr/sbin/service
      service crond start
      2⤵
        PID:1575
        • /usr/bin/basename
          basename /usr/sbin/service
          3⤵
            PID:1578
          • /usr/bin/basename
            basename /usr/sbin/service
            3⤵
              PID:1580
            • /usr/bin/sed
              sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
              3⤵
                PID:1588
              • /usr/bin/systemctl
                systemctl list-unit-files --full "--type=socket"
                3⤵
                  PID:1587
              • /tmp/a066a4516cda5a762adbcd98681d94c3a86451f92c705e8e0ae4a863984b21de.elf
                /tmp/a066a4516cda5a762adbcd98681d94c3a86451f92c705e8e0ae4a863984b21de.elf " "
                2⤵
                • Modifies Watchdog functionality
                • Creates/modifies environment variables
                • Modifies init.d
                • Modifies systemd
                • Write file to user bin folder
                • Modifies Bash startup script
                • Changes its process name
                • Enumerates kernel/hardware configuration
                • Reads runtime system information
                PID:1577
                • /usr/sbin/update-rc.d
                  update-rc.d linux_kill defaults
                  3⤵
                    PID:1591
                    • /usr/local/sbin/systemctl
                      systemctl daemon-reload
                      4⤵
                        PID:1592
                      • /usr/local/bin/systemctl
                        systemctl daemon-reload
                        4⤵
                          PID:1592
                        • /usr/sbin/systemctl
                          systemctl daemon-reload
                          4⤵
                            PID:1592
                          • /usr/bin/systemctl
                            systemctl daemon-reload
                            4⤵
                              PID:1592
                          • /usr/bin/sh
                            sh -c "cd /boot;systemctl daemon-reload;systemctl enable linux.service;systemctl start linux.service;journalctl -xe --no-pager"
                            3⤵
                              PID:1629
                              • /usr/bin/systemctl
                                systemctl daemon-reload
                                4⤵
                                  PID:1630
                                • /usr/bin/systemctl
                                  systemctl enable linux.service
                                  4⤵
                                    PID:1664
                                  • /usr/bin/systemctl
                                    systemctl start linux.service
                                    4⤵
                                      PID:1698
                                    • /usr/bin/journalctl
                                      journalctl -xe --no-pager
                                      4⤵
                                        PID:1709
                                    • /usr/bin/sh
                                      sh -c "cd /boot;ausearch -c 'System.img.conf' --raw | audit2allow -M my-Systemimgconf;semodule -X 300 -i my-Systemimgconf.pp"
                                      3⤵
                                        PID:1717
                                      • /usr/bin/bash
                                        bash -c "echo \"*/1 * * * * root /.img \" >> /etc/crontab"
                                        3⤵
                                        • Creates/modifies Cron job
                                        PID:1720
                                      • /usr/bin/renice
                                        renice -20 1577
                                        3⤵
                                          PID:1721
                                        • /usr/bin/mount
                                          mount -o bind /tmp/ /proc/1577
                                          3⤵
                                            PID:1722
                                          • /usr/sbin/service
                                            service cron start
                                            3⤵
                                              PID:1724
                                              • /usr/bin/basename
                                                basename /usr/sbin/service
                                                4⤵
                                                  PID:1725
                                                • /usr/bin/basename
                                                  basename /usr/sbin/service
                                                  4⤵
                                                    PID:1726
                                                  • /usr/bin/sed
                                                    sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                                    4⤵
                                                      PID:1729
                                                    • /usr/bin/systemctl
                                                      systemctl list-unit-files --full "--type=socket"
                                                      4⤵
                                                        PID:1728
                                                    • /usr/local/sbin/systemctl
                                                      systemctl start cron.service
                                                      3⤵
                                                        PID:1724
                                                      • /usr/local/bin/systemctl
                                                        systemctl start cron.service
                                                        3⤵
                                                          PID:1724
                                                        • /usr/sbin/systemctl
                                                          systemctl start cron.service
                                                          3⤵
                                                            PID:1724
                                                          • /usr/bin/systemctl
                                                            systemctl start cron.service
                                                            3⤵
                                                            • Reads runtime system information
                                                            PID:1724
                                                          • /usr/bin/systemctl
                                                            systemctl start crond.service
                                                            3⤵
                                                            • Reads runtime system information
                                                            PID:1730
                                                      • /etc/32678
                                                        /etc/32678
                                                        1⤵
                                                          PID:1576
                                                          • /usr/bin/sleep
                                                            sleep 60
                                                            2⤵
                                                              PID:1579
                                                          • /usr/local/sbin/systemctl
                                                            systemctl start crond.service
                                                            1⤵
                                                              PID:1575
                                                            • /usr/local/bin/systemctl
                                                              systemctl start crond.service
                                                              1⤵
                                                                PID:1575
                                                              • /usr/sbin/systemctl
                                                                systemctl start crond.service
                                                                1⤵
                                                                  PID:1575
                                                                • /usr/bin/systemctl
                                                                  systemctl start crond.service
                                                                  1⤵
                                                                    PID:1575

                                                                  Network

                                                                  MITRE ATT&CK Enterprise v15

                                                                  Reconnaissance

                                                                  Resource Development

                                                                  Initial Access

                                                                  Execution

                                                                  Scheduled Task/Job

                                                                  1
                                                                  T1053

                                                                  Cron

                                                                  1
                                                                  T1053.003

                                                                  Persistence

                                                                  Boot or Logon Autostart Execution

                                                                  3
                                                                  T1547

                                                                  XDG Autostart Entries

                                                                  1
                                                                  T1547.013

                                                                  Boot or Logon Initialization Scripts

                                                                  1
                                                                  T1037

                                                                  RC Scripts

                                                                  1
                                                                  T1037.004

                                                                  Create or Modify System Process

                                                                  1
                                                                  T1543

                                                                  Systemd Service

                                                                  1
                                                                  T1543.002

                                                                  Event Triggered Execution

                                                                  1
                                                                  T1546

                                                                  Unix Shell Configuration Modification

                                                                  1
                                                                  T1546.004

                                                                  Hijack Execution Flow

                                                                  1
                                                                  T1574

                                                                  Path Interception by PATH Environment Variable

                                                                  1
                                                                  T1574.007

                                                                  Scheduled Task/Job

                                                                  1
                                                                  T1053

                                                                  Cron

                                                                  1
                                                                  T1053.003

                                                                  Privilege Escalation

                                                                  Boot or Logon Autostart Execution

                                                                  3
                                                                  T1547

                                                                  XDG Autostart Entries

                                                                  1
                                                                  T1547.013

                                                                  Boot or Logon Initialization Scripts

                                                                  1
                                                                  T1037

                                                                  RC Scripts

                                                                  1
                                                                  T1037.004

                                                                  Create or Modify System Process

                                                                  1
                                                                  T1543

                                                                  Systemd Service

                                                                  1
                                                                  T1543.002

                                                                  Event Triggered Execution

                                                                  1
                                                                  T1546

                                                                  Unix Shell Configuration Modification

                                                                  1
                                                                  T1546.004

                                                                  Hijack Execution Flow

                                                                  1
                                                                  T1574

                                                                  Path Interception by PATH Environment Variable

                                                                  1
                                                                  T1574.007

                                                                  Scheduled Task/Job

                                                                  1
                                                                  T1053

                                                                  Cron

                                                                  1
                                                                  T1053.003

                                                                  Defense Evasion

                                                                  Hijack Execution Flow

                                                                  1
                                                                  T1574

                                                                  Path Interception by PATH Environment Variable

                                                                  1
                                                                  T1574.007

                                                                  Impair Defenses

                                                                  1
                                                                  T1562

                                                                  Credential Access

                                                                  Discovery

                                                                  System Information Discovery

                                                                  1
                                                                  T1082

                                                                  Lateral Movement

                                                                  Collection

                                                                  Command and Control

                                                                  Exfiltration

                                                                  Impact

                                                                  Replay Monitor

                                                                  Loading Replay Monitor...

                                                                  Downloads

                                                                  • /.img
                                                                    Filesize

                                                                    33B

                                                                    MD5

                                                                    d73d3376908ea075a939e3871ad0fabe

                                                                    SHA1

                                                                    320ff65831247ba199515f1b94df26cc8a3e5f76

                                                                    SHA256

                                                                    edbdabe30d8236a2c0a4eb89dfd597552130e4c1a4e93f8fe1568920442ad73a

                                                                    SHA512

                                                                    57b83fef88620598beb5d65626bf757d0abef242d2d6a01796a61474dedc5095a4a9d0f292b6abb450cad3d4410ab8456253600f58ddb66cfe6d79e1c8415536

                                                                    Download Submit

                                                                  • /boot/System.img.config
                                                                    Filesize

                                                                    5.2MB

                                                                    MD5

                                                                    a7b189688ee7fb703c4885af25bb4702

                                                                    SHA1

                                                                    0dd7bb7f5483d7919646189a9dbdc0a1dcfe1d8d

                                                                    SHA256

                                                                    a066a4516cda5a762adbcd98681d94c3a86451f92c705e8e0ae4a863984b21de

                                                                    SHA512

                                                                    a5c0a16588b5806fe05e8213f8a7cc98fd02cffed04591e9fd53fbb934c2958fff16fc1a877c383abd6567b939e92dabbc09c47462981a20545221a597f4a5a9

                                                                    Download Submit

                                                                  • /etc/32678
                                                                    Filesize

                                                                    61B

                                                                    MD5

                                                                    768eaf287796da19e1cf5e0b2fb1b161

                                                                    SHA1

                                                                    6a1ce2ee5ccc86d1f33806feb14547b35290df2a

                                                                    SHA256

                                                                    1d22620dfb2a6715e5d745aed5cf841ede0e75e1747f12b9b925a2d346bc7ecb

                                                                    SHA512

                                                                    e6af30c9df4f7f47696069511e64ecbc8e841629d692ee4056503df3533fb7a7a74960698826260355e1dba7b6c562482a27a39bb51a4237473ce4b68472d620

                                                                    Download Submit

                                                                  • /etc/init.d/linux_kill
                                                                    Filesize

                                                                    189B

                                                                    MD5

                                                                    3909975f7cc0d1121c1819b800069f31

                                                                    SHA1

                                                                    3e68de708c2e6c40fab6794afdee3104e5590189

                                                                    SHA256

                                                                    6876dac71f13a068afb863d257134275f2edba43b2acaf4924fabf97c079070b

                                                                    SHA512

                                                                    50600cceeb03b05f45ae61d890caee9f51ff390b6776930866e527e071d65d08241fc66673fd9b99d62fbc77d3c00fc3de4d7378cbc42f5daba5d83072b0906e

                                                                    Download Submit

                                                                  • /etc/profile.d/bash_config.sh
                                                                    Filesize

                                                                    37B

                                                                    MD5

                                                                    cfb4e51061485fe91169381fbdc1538e

                                                                    SHA1

                                                                    9a85b9b766a15b01737a41d680e4593b7a9bde87

                                                                    SHA256

                                                                    897f37267d0ceaa2fbdaa09847f5d08e6f8b01a0348a0d666264b0f10acd0c90

                                                                    SHA512

                                                                    fb154ec711d2090a7461da4db8ddad2b522649a27e74162ecb203f539b1729430288bc02d78d2071bde9c4bbc005693403a57612ef50277d52f816cb94524216

                                                                    Download Submit