Overview

overview

6

Static

static

1

S4Cq.elf

debian-12-mipsel

6

Analysis

  • max time kernel
    151s
  • max time network
    154s
  • 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
    04/08/2026, 12:37

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General

  • Target
    S4Cq.elf
  • Size 102KB
  • Sample260804-ptqhyaep9s
  • SHA256 180ffa949c9b8aaf004e0d68bb09feae79e1578ab3df085de22c625aa027b122
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
antivmdiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Signatures

  • 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 running processes

    Discovers information about currently running processes on the system

  • 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
  • Checks CPU configuration 1 TTPs 1 IoCs

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

    antivm
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery

Processes

  • /tmp/S4Cq.elf
    /tmp/S4Cq.elf
    1⤵
    • Creates/modifies Cron job
    • Modifies rc script
    • Modifies systemd
    • Checks CPU configuration
    • Reads runtime system information
    PID:802
    • /usr/local/sbin/systemctl
      systemctl daemon-reload
      2⤵
        PID:821
      • /usr/local/sbin/systemctl
        systemctl enable crond.service
        2⤵
          PID:822
        • /usr/local/bin/systemctl
          systemctl daemon-reload
          2⤵
            PID:821
          • /usr/local/bin/systemctl
            systemctl enable crond.service
            2⤵
              PID:822
            • /usr/sbin/systemctl
              systemctl enable crond.service
              2⤵
                PID:822
              • /usr/sbin/systemctl
                systemctl daemon-reload
                2⤵
                  PID:821
              • /usr/bin/systemctl
                systemctl enable crond.service
                1⤵
                • Reads runtime system information
                PID:822
              • /usr/bin/systemctl
                systemctl daemon-reload
                1⤵
                  PID:821

                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

                      Boot or Logon Initialization Scripts

                      1
                      T1037

                      RC Scripts

                      1
                      T1037.004

                      Create or Modify System Process

                      1
                      T1543

                      Systemd Service

                      1
                      T1543.002

                      Scheduled Task/Job

                      1
                      T1053

                      Cron

                      1
                      T1053.003

                      Privilege Escalation

                      Boot or Logon Autostart Execution

                      2
                      T1547

                      XDG Autostart Entries

                      1
                      T1547.013

                      Boot or Logon Initialization Scripts

                      1
                      T1037

                      RC Scripts

                      1
                      T1037.004

                      Create or Modify System Process

                      1
                      T1543

                      Systemd Service

                      1
                      T1543.002

                      Scheduled Task/Job

                      1
                      T1053

                      Cron

                      1
                      T1053.003

                      Defense Evasion

                      Virtualization/Sandbox Evasion

                      1
                      T1497

                      System Checks

                      1
                      T1497.001

                      Credential Access

                      Discovery

                      Virtualization/Sandbox Evasion

                      1
                      T1497

                      System Checks

                      1
                      T1497.001

                      Lateral Movement

                      Collection

                      Command and Control

                      Exfiltration

                      Impact

                      Replay Monitor

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                      Downloads

                      crond
                      • Path /etc/cron.d/crond
                      • Size 30B
                      • SHA256 14d20e177694dd5f8b8c0fc255b785ec0219eaf765ede56418058330be63097d
                      • MD5 SHA1 SHA512
                      Submit Download

                      rc.local
                      • Path /etc/rc.local
                      • Size 10B
                      • SHA256 a8076d3d28d21e02012b20eaf7dbf75409a6277134439025f282e368e3305abf
                      • MD5 SHA1 SHA512
                      Submit Download

                      rc.local
                      • Path /etc/rc.local
                      • Size 34B
                      • SHA256 2de9229cb679dcd338a57970f2601cbf232d31a1f2600da8d3c317e03a7000d3
                      • MD5 SHA1 SHA512
                      Submit Download

                      crond.service
                      • Path /etc/systemd/system/crond.service
                      • Size 193B
                      • SHA256 c4beb21747a90a5e7a50b7606d29ed5d99f8570792728909619cde5c0b429b53
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download