Overview

overview

7

Static

static

1

2026-09-04..._mirai

debian-12-armhf

7

Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    debian-12_armhf
  • resource
    debian12-armhf-20260127-en
  • resource tags

    arch:armhfimage:debian12-armhf-20260127-enkernel:6.1.0-17-armmp-lpaelocale:en-usos:debian-12-armhfsystem
  • submitted
    05/09/2026, 13:03

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General

  • Target
    2026-09-04_414134c20616ca4cd9aafc5ce4d40a62_akira_mirai
  • Size 874KB
  • Sample260905-qahjnavfjd
  • SHA256 167696e1dab245c8c1e30067c419af83a7d57e6a87cc5b8bf178c4ea91ceb67d
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
credential_accessdefense_evasiondiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Signatures

  • Deletes itself 2 IoCs
  • Traces itself 5 IoCs

    Traces itself to prevent debugging attempts

  • Unexpected DNS network traffic destination 15 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • 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

  • Modifies init.d 2 TTPs 1 IoCs

    Adds/modifies system service, likely for persistence.

    persistence
  • 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 process memory 1 TTPs 51 IoCs

    Read the memory of a process through the /proc virtual filesystem. This can be used to steal credentials.

    credential_access
  • 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
  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/2026-09-04_414134c20616ca4cd9aafc5ce4d40a62_akira_mirai
    /tmp/2026-09-04_414134c20616ca4cd9aafc5ce4d40a62_akira_mirai
    1⤵
    • Deletes itself
    • Traces itself
    • Modifies init.d
    • Reads MAC address of network interface
    • Reads process memory
    • Changes its process name
    • Enumerates kernel/hardware configuration
    • Reads runtime system information
    • Writes file to tmp directory
    PID:788
    • /usr/local/sbin/crontab
      crontab -l
      2⤵
        PID:802
      • /usr/local/bin/crontab
        crontab -l
        2⤵
          PID:802
        • /usr/sbin/crontab
          crontab -l
          2⤵
            PID:802
          • /usr/bin/crontab
            crontab -l
            2⤵
              PID:802
            • /usr/local/sbin/crontab
              crontab /tmp/.cron_tmp
              2⤵
                PID:806
              • /usr/local/bin/crontab
                crontab /tmp/.cron_tmp
                2⤵
                  PID:806
                • /usr/sbin/crontab
                  crontab /tmp/.cron_tmp
                  2⤵
                    PID:806
                  • /usr/bin/crontab
                    crontab /tmp/.cron_tmp
                    2⤵
                    • Creates/modifies Cron job
                    PID:806

                Network

                      MITRE ATT&CK Enterprise v16

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                      Downloads

                      .kworker
                      • Path /etc/init.d/.kworker
                      • Size 65B
                      • SHA256 41602099ac3b9c7e713fa0d7bf9c6d45ef23feabec6388df7bc24f5069f9b249
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download

                      .cron_tmp
                      • Path /tmp/.cron_tmp
                      • Size 52B
                      • SHA256 ddd3c1932a4d94529c3f6883ead09c1ba051cab02455e2a87206634a40c20d95
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download

                      tmp.9J6wzr
                      • Path /var/spool/cron/crontabs/tmp.9J6wzr
                      • Size 240B
                      • SHA256 a6dafd65be563933a06469253be9ff4c8e03b94dd72032ae19c3b07bc960361b
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download