General
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Target
linux_arm6.elf
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Size
5.1MB
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Sample
241028-es33jaxqep
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MD5
735cd0c7f66c6557ea4220af537430d5
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SHA1
1425a4d8b9a26dd04547d14c4bc74072ff0689f1
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SHA256
dc505dccbcf7701a65a3387ab2ecbb4cb2e5665fbcafc771937e5d37b8b7f3bf
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SHA512
eb097e83f018f7d26ccf3d811ca96424640b839d53670314034c2745ec893c28d4f0581f327fdfa5bcf435d37b4867c431679bcd03bc47ee0a1998ca2dab00c4
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SSDEEP
98304:8cSBHdgN2a7JP97kJru8cYWPAXqIu+60:8cS03Qu+6
Behavioral task
behavioral1
Sample
linux_arm6.elf
Resource
debian12-armhf-20240221-en
Malware Config
Extracted
kaiji
154.12.82.11:808
Targets
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Target
linux_arm6.elf
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Size
5.1MB
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MD5
735cd0c7f66c6557ea4220af537430d5
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SHA1
1425a4d8b9a26dd04547d14c4bc74072ff0689f1
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SHA256
dc505dccbcf7701a65a3387ab2ecbb4cb2e5665fbcafc771937e5d37b8b7f3bf
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SHA512
eb097e83f018f7d26ccf3d811ca96424640b839d53670314034c2745ec893c28d4f0581f327fdfa5bcf435d37b4867c431679bcd03bc47ee0a1998ca2dab00c4
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SSDEEP
98304:8cSBHdgN2a7JP97kJru8cYWPAXqIu+60:8cS03Qu+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