Analysis
- max time kernel
123s - max time network
154s - platform
debian-12_mipsel - resource
debian12-mipsel-20250619-en - resource tags
- submitted
03/12/2025, 04:39
General
- Target ecco.mpsl.elf
- Size 90KB
- Sample251203-e93hbsvjhp
- SHA256 cd82c602f8aab894ddc1c2a3c55976bbd4dcd8f69979abadaf62b48858a342da
Malware Config
Signatures
- Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
- Mirai family
- Contacts a large (40746) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
- Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
- Deletes Audit logs 1 TTPs 1 IoCs
Deletes logs related to the Linux Audit framework.
- Deletes journal logs 1 TTPs 1 IoCs
Deletes systemd journal logs. Likely to evade detection.
- Modifies Watchdog functionality 1 TTPs 2 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.
- Creates/modifies Cron job 1 TTPs 5 IoCs
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
- 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.
- Modifies rc script 2 TTPs 1 IoCs
Adding/modifying system rc scripts is a common persistence mechanism.
- Writes file to system bin folder 2 IoCs
- UPX packed file 1 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Changes its process name 12 IoCs
- Reads runtime system information 64 IoCs
Reads data from /proc virtual filesystem.
Processes
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/tmp/ecco.mpsl.elf/tmp/ecco.mpsl.elf1⤵
- Deletes Audit logs
- Deletes journal logs
- Modifies Watchdog functionality
- Modifies init.d
- Modifies rc script
- Writes file to system bin folder
- Changes its process name
- Reads runtime system information
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/bin/shsh -c "cp init /usr/bin/.sh"2⤵
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/usr/bin/cpcp init /usr/bin/.sh3⤵
- Reads runtime system information
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/bin/shsh -c "(crontab -l 2>/dev/null; echo \"#reBoot /usr/Bin)\") | crontab - >/dev/null 2>&1"2⤵
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/usr/bin/crontabcrontab -l3⤵
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
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/bin/shsh -c "(crontab -l 2>/dev/null; echo \"#reBoot /usr/Bin)\") | crontab - >/dev/null 2>&1"2⤵
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
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/usr/bin/crontabcrontab -l3⤵
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/bin/shsh -c "(crontab -l 2>/dev/null; echo \"#reBoot /usr/Bin)\") | crontab - >/dev/null 2>&1"2⤵
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/usr/bin/crontabcrontab -l3⤵
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
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/bin/shsh -c "(crontab -l 2>/dev/null; echo \"#reBoot /usr/Bin)\") | crontab - >/dev/null 2>&1"2⤵
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
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/usr/bin/crontabcrontab -l3⤵
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/bin/shsh -c "(crontab -l 2>/dev/null; echo \"#reBoot /usr/Bin)\") | crontab - >/dev/null 2>&1"2⤵
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
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/usr/bin/crontabcrontab -l3⤵
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/bin/shsh -c "(crontab -l 2>/dev/null; echo \"#reBoot /usr/Bin)\") | crontab - >/dev/null 2>&1"2⤵
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/usr/bin/crontabcrontab -l3⤵
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/usr/bin/crontabcrontab -3⤵
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Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Boot or Logon Initialization Scripts
2RC Scripts
2Scheduled Task/Job
1Cron
1Privilege Escalation
Boot or Logon Autostart Execution
2Boot or Logon Initialization Scripts
2RC Scripts
2Scheduled Task/Job
1Cron
1Replay Monitor
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Downloads
sysd
Bin)
tmp.cYe4ce