General
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Target
linux_arm7.elf
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Size
5.1MB
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Sample
250419-xg1gdas1at
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MD5
5dc8e25035f2749d4bd8dc919467486d
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SHA1
788a15790150958551beb6001eaaf401db7efd47
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SHA256
e9f39d6ba4d56c27baa6a7206d097874c0cbb996b495745a7b4358c202b16c53
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SHA512
7108353b66bbca7f7168cc61abdcef6db9de6d387312fc9607bce8ef75190347eb381f36cd35c3083fce428b91f9a5221037aa279def52abbb39cc19b1ce5d26
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SSDEEP
49152:f9MwAobUPMcOxhkpKLTk8TBGo0eZYKwrJmpBK+U1F1:VMwAoeixh+KLLTF
Behavioral task
behavioral1
Sample
linux_arm7.elf
Resource
debian12-armhf-20250410-en
Malware Config
Extracted
kaiji
2.59.151.111:8080
Targets
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Target
linux_arm7.elf
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Size
5.1MB
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MD5
5dc8e25035f2749d4bd8dc919467486d
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SHA1
788a15790150958551beb6001eaaf401db7efd47
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SHA256
e9f39d6ba4d56c27baa6a7206d097874c0cbb996b495745a7b4358c202b16c53
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SHA512
7108353b66bbca7f7168cc61abdcef6db9de6d387312fc9607bce8ef75190347eb381f36cd35c3083fce428b91f9a5221037aa279def52abbb39cc19b1ce5d26
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SSDEEP
49152:f9MwAobUPMcOxhkpKLTk8TBGo0eZYKwrJmpBK+U1F1:VMwAoeixh+KLLTF
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Renames multiple (1004) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE
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Modifies Watchdog functionality
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.
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Creates/modifies Cron job
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
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Creates/modifies environment variables
Creating/modifying environment variables is a common persistence mechanism.
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Enumerates running processes
Discovers information about currently running processes on the system
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Modifies systemd
Adds/ modifies systemd service files. Likely to achieve persistence.
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Write file to user bin folder
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Modifies Bash startup script
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MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
3XDG Autostart Entries
1Boot or Logon Initialization Scripts
1RC Scripts
1Create or Modify System Process
1Systemd Service
1Event Triggered Execution
1Unix Shell Configuration Modification
1Hijack Execution Flow
1Path Interception by PATH Environment Variable
1Scheduled Task/Job
1Cron
1Privilege Escalation
Boot or Logon Autostart Execution
3XDG Autostart Entries
1Boot or Logon Initialization Scripts
1RC Scripts
1Create or Modify System Process
1Systemd Service
1Event Triggered Execution
1Unix Shell Configuration Modification
1Hijack Execution Flow
1Path Interception by PATH Environment Variable
1Scheduled Task/Job
1Cron
1