Overview

overview

6

Static

static

1

amd64.elf

ubuntu-22.04-amd64

6

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • 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
    23/05/2025, 11:42

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General

  • Target
    amd64.elf
  • Size 470KB
  • Sample250523-nt8tvawkt8
  • SHA256 dad97ab00a5e653e6b16b5ffc07a8ab476ab1da821e13c9706d7fdae34b4ad1a
  • MD5 SHA1 SHA512 SSDEEP
Score
6/10
antivmdefense_evasiondiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Signatures

  • Checks hardware identifiers (DMI) 1 TTPs 2 IoCs

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

    antivm
  • Creates/modifies Cron job 1 TTPs 1 IoCs

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

    executionpersistenceprivilege_escalation
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Reads MAC address of network interface 2 TTPs 1 IoCs

    Fetches the MAC address of active network interfaces. May be used to detect known values for hypervisors.

    defense_evasiondiscovery
  • Reads hardware information 1 TTPs 4 IoCs

    Accesses system info like serial numbers, manufacturer names etc.

    discovery
  • Checks CPU configuration 1 TTPs 1 IoCs

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

    antivm
  • Enumerates kernel/hardware configuration 1 TTPs 1 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
  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/amd64.elf
    /tmp/amd64.elf
    1⤵
    • Checks hardware identifiers (DMI)
    • Reads MAC address of network interface
    • Reads hardware information
    • Checks CPU configuration
    • Enumerates kernel/hardware configuration
    • Reads runtime system information
    • Writes file to tmp directory
    PID:1568
    • /bin/sh
      sh -c "crontab -l"
      2⤵
        PID:1569
        • /usr/bin/crontab
          crontab -l
          3⤵
            PID:1570
        • /bin/sh
          sh -c "(crontab -l ; echo \"@reboot /root/.sys/configuration\")| crontab -"
          2⤵
            PID:1571
            • /usr/bin/crontab
              crontab -
              3⤵
              • Creates/modifies Cron job
              PID:1573
            • /usr/bin/crontab
              crontab -l
              3⤵
                PID:1574

          Network

                MITRE ATT&CK Enterprise v16

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                Downloads

                tmp.4nzyCk
                • Path /var/spool/cron/crontabs/tmp.4nzyCk
                • Size 208B
                • SHA256 2484cb26bf32b73241c363655530f68ea4a56e76878092063337016413b9c8f1
                • MD5 SHA1 SHA512
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