General
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Target
linux_arm6.elf
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Size
5.1MB
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Sample
250320-zssa9aytfx
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MD5
f67aa24729b37795aa19446cdbee03a2
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SHA1
71a70d18dd01cc86e1862f12ba72b35ee38db792
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SHA256
7ad9220841260a3bdb6d1dd1654e2e45bacc53ca2715852a15351f242338b687
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SHA512
c6cb3f269699647ce97667cb83e1bf7b369a7aa59d2421cefc5483dfef75002e6fe4a5f34c9643933ac2689eda7fef1f77b2b6cc3ab2829a7cbf03cd5c0051b2
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SSDEEP
98304:8cSBHdgN2a7JP97kJru8cYWPAXqNu+60:8cS03Fu+6
Behavioral task
behavioral1
Sample
linux_arm6.elf
Resource
debian12-armhf-20240418-en
Malware Config
Extracted
kaiji
156.225.31.175:808
Targets
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Target
linux_arm6.elf
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Size
5.1MB
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MD5
f67aa24729b37795aa19446cdbee03a2
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SHA1
71a70d18dd01cc86e1862f12ba72b35ee38db792
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SHA256
7ad9220841260a3bdb6d1dd1654e2e45bacc53ca2715852a15351f242338b687
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SHA512
c6cb3f269699647ce97667cb83e1bf7b369a7aa59d2421cefc5483dfef75002e6fe4a5f34c9643933ac2689eda7fef1f77b2b6cc3ab2829a7cbf03cd5c0051b2
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SSDEEP
98304:8cSBHdgN2a7JP97kJru8cYWPAXqNu+60:8cS03Fu+6
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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 v15
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