Overview

overview

6

Static

static

1

x86.elf

ubuntu-18.04-amd64

6

Analysis

  • max time kernel
    149s
  • max time network
    137s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20260513-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20260513-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    06/08/2026, 10:33

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General

  • Target
    x86.elf
  • Size 145KB
  • Sample260806-mlrd6ayfmd
  • SHA256 9a26c7ac75b0c066341ec9ce7011849025c05b6b97fb7ad8f36ce0f6870b4d37
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
discoveryexecutionpersistenceprivilege_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
  • Modifies rc script 2 TTPs 1 IoCs

    Adding/modifying system rc scripts is a common persistence mechanism.

    persistence
  • 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
  • Changes its process name 5 IoCs
  • Reads runtime system information 7 IoCs

    Reads data from /proc virtual filesystem.

    discovery

Processes

  • /tmp/x86.elf
    /tmp/x86.elf
    1⤵
    • Modifies rc script
    • Modifies systemd
    • Write file to user bin folder
    • Changes its process name
    • Reads runtime system information
    PID:1481
    • /bin/sh
      sh -c "systemctl enable rrz8hi7z9q9.service >/dev/null 2>&1"
      2⤵
        PID:1492
        • /bin/systemctl
          systemctl enable rrz8hi7z9q9.service
          3⤵
          • Reads runtime system information
          PID:1493
      • /bin/sh
        sh -c "(crontab -l 2>/dev/null | grep -qF '/usr/local/bin/lhg395oepqvp4e0') || { (crontab -l 2>/dev/null; echo '@reboot /usr/local/bin/lhg395oepqvp4e0 &') | crontab -; } >/dev/null 2>&1"
        2⤵
          PID:1514
          • /bin/grep
            grep -qF /usr/local/bin/lhg395oepqvp4e0
            3⤵
              PID:1517
            • /usr/bin/crontab
              crontab -l
              3⤵
                PID:1516
              • /usr/bin/crontab
                crontab -
                3⤵
                • Creates/modifies Cron job
                PID:1519
              • /usr/bin/crontab
                crontab -l
                3⤵
                  PID:1520

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  rrz8hi7z9q9.service
                  • Path /etc/systemd/system/rrz8hi7z9q9.service
                  • Size 186B
                  • SHA256 96f0941238212b4c04a48d0164c6c5d2d7055830102ac66cf897147ed1aef368
                  • MD5 SHA1 SHA512 TLSH
                  Submit Download

                  lhg395oepqvp4e0
                  • Path /usr/local/bin/lhg395oepqvp4e0
                  • Size 145KB
                  • SHA256 9a26c7ac75b0c066341ec9ce7011849025c05b6b97fb7ad8f36ce0f6870b4d37
                  • MD5 SHA1 SHA512 SSDEEP TLSH
                  Submit Download

                  tmp.BRY42C
                  • Path /var/spool/cron/crontabs/tmp.BRY42C
                  • Size 216B
                  • SHA256 a43a9155cb6ddd72f4ea3b477a603c73446ddece16088bb332a73600f78a6b2e
                  • MD5 SHA1 SHA512 TLSH
                  Submit Download