General
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Target
linux_arm6.elf
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Size
2.0MB
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Sample
250420-pvpyssyns2
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MD5
32a62effec59f84ec2c77fed3e1a7e10
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SHA1
ec11f032aa69e12668ed506066dec4b152f62fa0
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SHA256
eb4747754eddec0f52439175148a95860b7804c99d100260bff8444d37357282
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SHA512
419723104b956e7dc07d80c7da42611a5df3e55d8d841ffb7634d325516464f9d2774e4995cadc9aefbc6b118f57f596dd93ab8a239f97392380a64855361f2b
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SSDEEP
24576:WWk1VBrzE64PCK6uiK9Pzd5c8o916IqZa4F9yXcnIm6zVWZLVhS7uofvsQ4XyUta:xxdsU2T1
Behavioral task
behavioral1
Sample
linux_arm6.elf
Resource
debian12-armhf-20240418-en
Malware Config
Extracted
kaiji
154.201.91.52:888
Targets
-
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Target
linux_arm6.elf
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Size
2.0MB
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MD5
32a62effec59f84ec2c77fed3e1a7e10
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SHA1
ec11f032aa69e12668ed506066dec4b152f62fa0
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SHA256
eb4747754eddec0f52439175148a95860b7804c99d100260bff8444d37357282
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SHA512
419723104b956e7dc07d80c7da42611a5df3e55d8d841ffb7634d325516464f9d2774e4995cadc9aefbc6b118f57f596dd93ab8a239f97392380a64855361f2b
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SSDEEP
24576:WWk1VBrzE64PCK6uiK9Pzd5c8o916IqZa4F9yXcnIm6zVWZLVhS7uofvsQ4XyUta:xxdsU2T1
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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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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
Execution
Command and Scripting Interpreter
1Unix Shell
1Scheduled Task/Job
1Cron
1Persistence
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