General
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Target
linux_arm5.elf
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Size
5.1MB
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Sample
241031-znkevavmhq
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MD5
ccd26ce76ba241bb57206af170add530
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SHA1
0456caf337158a5cda120d85133296cf4ffe373a
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SHA256
4f45461d708ccdeb18646b2f7a6003f4f1bf513e86f3a2ea7846ac2f14194c90
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SHA512
b52d897506d5e06f65742ab53d4e369ca5ac68be2c3dad6ea0785c7fbed36ba5bfec90e776f659268bac19da18075c1801ec68f783aadaa7acb312cee8cc9140
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SSDEEP
49152:QtKY0CdO+kBRx0Tg0qTecEG7meYuhL+lYfQMcU1F1:OKY3U+qRxQ3qKRM
Behavioral task
behavioral1
Sample
linux_arm5.elf
Resource
debian12-armhf-20240221-en
Malware Config
Extracted
kaiji
78789.dns.army:808
Targets
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Target
linux_arm5.elf
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Size
5.1MB
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MD5
ccd26ce76ba241bb57206af170add530
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SHA1
0456caf337158a5cda120d85133296cf4ffe373a
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SHA256
4f45461d708ccdeb18646b2f7a6003f4f1bf513e86f3a2ea7846ac2f14194c90
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SHA512
b52d897506d5e06f65742ab53d4e369ca5ac68be2c3dad6ea0785c7fbed36ba5bfec90e776f659268bac19da18075c1801ec68f783aadaa7acb312cee8cc9140
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SSDEEP
49152:QtKY0CdO+kBRx0Tg0qTecEG7meYuhL+lYfQMcU1F1:OKY3U+qRxQ3qKRM
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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