Overview

overview

10

Static

static

5

sever1078.mpsl.elf

debian-12-mipsel

10

Analysis

  • max time kernel
    56s
  • max time network
    158s
  • platform
    debian-12_mipsel
  • resource
    debian12-mipsel-20260513-en
  • resource tags

    arch:mipselimage:debian12-mipsel-20260513-enkernel:6.1.0-17-4kc-maltalocale:en-usos:debian-12-mipselsystem
  • submitted
    24/09/2026, 04:26

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General

  • Target
    sever1078.mpsl.elf
  • Size 237KB
  • Sample260924-e2ndfayeqh
  • SHA256 64a4961f31e19f9c4c1dc493b40939e00cffcd996f07735c42eeb09a6b919b8e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
botnetdefense_evasiondiscoveryexecutionmiraipersistenceprivilege_escalationupx

Malware Config

Extracted

Family

  • mirai

C2

  • bigbigvol.qd.je

Signatures

  • Family: Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

    botnetmirai
  • Contacts a large (40018) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

    discovery
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

    discovery
  • 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 2 IoCs

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

    executionpersistenceprivilege_escalation
  • 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
  • Writes file to system bin folder 2 IoCs
  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Changes its process name 8 IoCs
  • Reads system network configuration 1 TTPs 1 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery

Processes

  • /tmp/sever1078.mpsl.elf
    /tmp/sever1078.mpsl.elf
    1⤵
    • Executes dropped EXE
    • Modifies systemd
    PID:798
    • /bin/sh
      sh -c "(crontab -l 2>/dev/null | grep -v '/var/tmp/.sysd' | crontab - 2>/dev/null) >/dev/null 2>&1"
      2⤵
        PID:805
        • /usr/bin/crontab
          crontab -
          3⤵
          • Creates/modifies Cron job
          PID:814
        • /usr/bin/crontab
          crontab -l
          3⤵
            PID:811
          • /usr/bin/grep
            grep -v /var/tmp/.sysd
            3⤵
              PID:813
          • /bin/sh
            sh -c "systemctl daemon-reload 2>/dev/null; systemctl enable systemd-network-update.service 2>/dev/null; systemctl start systemd-network-update.service 2>/dev/null"
            2⤵
              PID:819
              • /usr/bin/systemctl
                systemctl daemon-reload
                3⤵
                • Reads runtime system information
                PID:820
              • /usr/bin/systemctl
                systemctl enable systemd-network-update.service
                3⤵
                • Reads runtime system information
                PID:859
              • /usr/bin/systemctl
                systemctl start systemd-network-update.service
                3⤵
                  PID:876
            • /var/tmp/.sysd
              /var/tmp/.sysd
              1⤵
              • Modifies Watchdog functionality
              • Enumerates active TCP sockets
              • Writes file to system bin folder
              • Changes its process name
              • Reads system network configuration
              • Reads runtime system information
              PID:798
              • /bin/sh
                sh -c "(crontab -l 2>/dev/null | grep -v '/var/tmp/.sysd' | crontab - 2>/dev/null) >/dev/null 2>&1"
                2⤵
                  PID:880
                  • /usr/bin/crontab
                    crontab -
                    3⤵
                    • Creates/modifies Cron job
                    PID:884
                  • /usr/bin/crontab
                    crontab -l
                    3⤵
                      PID:882
                    • /usr/bin/grep
                      grep -v /var/tmp/.sysd
                      3⤵
                      • Reads runtime system information
                      PID:883

                Network

                      MITRE ATT&CK Enterprise v16

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                      Downloads

                      systemd-network-update.service
                      • Path /etc/systemd/system/systemd-network-update.service
                      • Size 184B
                      • SHA256 2c0ed8e36e0603c11ba5613314d2bd2605e25777a5179c6264da034367c7c21c
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download

                      tmp.8LK49q
                      • Path /var/spool/cron/crontabs/tmp.8LK49q
                      • Size 175B
                      • SHA256 f7c687b60a786beef7b8564e4e19ca0d9a7c94139e2c0730ff3d4c6cb7a99bd3
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download

                      tmp.YbbgZ8
                      • Path /var/spool/cron/crontabs/tmp.YbbgZ8
                      • Size 175B
                      • SHA256 dd2084f333b828c7b8dc1e493df1febc60bf8db4d1b27e5682744409c5aa24a8
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download

                      .sysd
                      • Path /var/tmp/.sysd
                      • Size 237KB
                      • SHA256 64a4961f31e19f9c4c1dc493b40939e00cffcd996f07735c42eeb09a6b919b8e
                      • MD5 SHA1 SHA512 SSDEEP TLSH
                      Submit Download

                      .sysd.lock
                      • Path /var/tmp/.sysd.lock
                      • Size 4B
                      • SHA256 6ccc3f91fd7ba9e400de51aaf096f2eccfff71a47a594feaf2de59ba99bc3da1
                      • MD5 SHA1 SHA512
                      Submit Download