Analysis
- max time kernel
111s - max time network
150s - platform
ubuntu-18.04_amd64 - resource
ubuntu1804-amd64-20250619-en - resource tags
- submitted
03/12/2025, 04:32
General
- Target ecco.x86.elf
- Size 210KB
- Sample251203-e52egaeq31
- SHA256 adc9e93d5f38ae028ea783883fd0caaf8eb29ae582d5a04d115bf1048229997b
Malware Config
Extracted
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mirai
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LZRD
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draft21.redirectme.net
Signatures
- Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
- Mirai family
- Contacts a large (49274) 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.
- 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 6 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
- Changes its process name 14 IoCs
- Reads runtime system information 64 IoCs
Reads data from /proc virtual filesystem.
Processes
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/tmp/ecco.x86.elf/tmp/ecco.x86.elf1⤵
- 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 login /usr/bin/.sh"2⤵
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/bin/cpcp login /usr/bin/.sh3⤵
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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 -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 -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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Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Boot or Logon Initialization Scripts
2RC Scripts
2Scheduled Task/Job
1Cron
1Replay Monitor
Loading Replay Monitor...
Downloads
sysd
Bin)
tmp.1WmFoo
tmp.1XI2uS
tmp.Jbwuxk
tmp.TSCuBn
tmp.cKn9uQ
tmp.qyQZ5T