Overview

overview

6

Static

static

1

agent_x86

ubuntu-18.04-amd64

6

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20260126-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20260126-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    28/04/2026, 00:23

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General

  • Target
    agent_x86
  • Size 932KB
  • Sample260428-apylesey6n
  • SHA256 813fd49483ea31a14c324083ff4a89bd06cbd6526a58d5eb9228443ccb1cb07f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
defense_evasiondiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Signatures

  • 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 1 IoCs

    Creating/modifying environment variables is a common persistence mechanism.

    persistenceprivilege_escalationdefense_evasion
  • Enumerates active TCP sockets 1 TTPs 1 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

    discovery
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies systemd 2 TTPs 1 IoCs

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

    persistenceprivilege_escalation
  • Write file to user bin folder 1 IoCs
    persistence
  • Modifies Bash startup script 2 TTPs 1 IoCs
    persistence
  • Changes its process name 4 IoCs
  • Reads system network configuration 1 TTPs 2 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery
  • Writes file to tmp directory 2 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/agent_x86
    /tmp/agent_x86
    1⤵
    • Creates/modifies environment variables
    • Enumerates active TCP sockets
    • Modifies systemd
    • Write file to user bin folder
    • Modifies Bash startup script
    • Changes its process name
    • Reads system network configuration
    • Reads runtime system information
    • Writes file to tmp directory
    PID:1506
    • /bin/sh
      sh -c "systemctl daemon-reload 2>/dev/null"
      2⤵
        PID:1509
        • /bin/systemctl
          systemctl daemon-reload
          3⤵
          • Reads runtime system information
          PID:1510
      • /bin/sh
        sh -c "systemctl enable vps-agent 2>/dev/null"
        2⤵
          PID:1534
          • /bin/systemctl
            systemctl enable vps-agent
            3⤵
            • Reads runtime system information
            PID:1535
        • /bin/sh
          sh -c "crontab -l 2>/dev/null"
          2⤵
            PID:1556
            • /usr/bin/crontab
              crontab -l
              3⤵
                PID:1557
            • /bin/sh
              sh -c "(crontab -l 2>/dev/null|grep -v vps-agent|grep -v .syslogd;echo '@reboot /usr/local/bin/.syslogd';echo '*/5 * * * * pgrep -f .syslogd >/dev/null 2>&1||/usr/local/bin/.syslogd &')|crontab - 2>/dev/null"
              2⤵
                PID:1558
                • /usr/bin/crontab
                  crontab -
                  3⤵
                  • Creates/modifies Cron job
                  PID:1560
                • /bin/grep
                  grep -v .syslogd
                  3⤵
                    PID:1563
                  • /bin/grep
                    grep -v vps-agent
                    3⤵
                      PID:1562
                    • /usr/bin/crontab
                      crontab -l
                      3⤵
                        PID:1561
                    • /bin/sh
                      sh -c "cat /var/spool/cron/crontabs/root 2>/dev/null"
                      2⤵
                        PID:1564
                        • /bin/cat
                          cat /var/spool/cron/crontabs/root
                          3⤵
                            PID:1565

                      Network

                            MITRE ATT&CK Enterprise v16

                            Reconnaissance

                            Resource Development

                            Initial Access

                            Execution

                            Scheduled Task/Job

                            1
                            T1053

                            Cron

                            1
                            T1053.003

                            Persistence

                            Boot or Logon Autostart Execution

                            2
                            T1547

                            XDG Autostart Entries

                            1
                            T1547.013

                            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

                            2
                            T1547

                            XDG Autostart Entries

                            1
                            T1547.013

                            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

                            Credential Access

                            Discovery

                            System Network Configuration Discovery

                            1
                            T1016

                            Internet Connection Discovery

                            1
                            T1016.001

                            System Network Connections Discovery

                            1
                            T1049

                            Lateral Movement

                            Collection

                            Command and Control

                            Exfiltration

                            Impact

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            vps-agent
                            • Path /etc/network/if-up.d/vps-agent
                            • Size 36B
                            • SHA256 a9ea462b3df773db181ea45b815febd9d0aab6acc5cc1fdba58bc185065ac979
                            • MD5 SHA1 SHA512
                            Submit Download

                            vpa.sh
                            • Path /etc/profile.d/vpa.sh
                            • Size 71B
                            • SHA256 3294f7928da3e34fe130ddb2f399ef03e982342c1c435d7c6ee4b6bd459c8ad8
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download

                            vps-agent.service
                            • Path /etc/systemd/system/vps-agent.service
                            • Size 203B
                            • SHA256 6dc03d866f8d2a6cc78fd51ebeeebf03f9508dbef7dc00d3c7f5a1cab62bf1ab
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download

                            .vpa.lock
                            • Path /tmp/.vpa.lock
                            • Size 5B
                            • SHA256 6a5363ccbb5df46d01e329a8dbec2db8be94b5ae7d322081b58f32696adc317a
                            • MD5 SHA1 SHA512
                            Submit Download

                            .syslogd
                            • Path /usr/local/bin/.syslogd
                            • Size 932KB
                            • SHA256 813fd49483ea31a14c324083ff4a89bd06cbd6526a58d5eb9228443ccb1cb07f
                            • MD5 SHA1 SHA512 SSDEEP TLSH
                            Submit Download

                            tmp.yEud5m
                            • Path /var/spool/cron/crontabs/tmp.yEud5m
                            • Size 280B
                            • SHA256 91f5b992187c83e176472eb040edbb55fea16b883b7f33b2d2116dfe5849ef16
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download