General
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Target
bash.bash
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Size
151B
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Sample
240405-q4b9qseb64
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MD5
7cdd8218f26a5273f0170722a81c3777
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SHA1
90efe0e89d58371a2db1ce44e5db7ca6de49f70a
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SHA256
4092787392d3d1fed1202cceb033bc55d112018a6de7fc3d35ad3a2181ddfa69
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SHA512
7bd633f12945f659bf86130d4cae6a1d5c78f0e13bdbd8ad2e3347da9cbbf4a823c01f0c551333dd86aefde097c96d9a60ad633320bba3de2f7c75968bf9b0ec
Static task
static1
Behavioral task
behavioral1
Sample
bash.bash
Resource
ubuntu2004-amd64-20240221-en
Malware Config
Targets
-
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Target
bash.bash
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Size
151B
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MD5
7cdd8218f26a5273f0170722a81c3777
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SHA1
90efe0e89d58371a2db1ce44e5db7ca6de49f70a
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SHA256
4092787392d3d1fed1202cceb033bc55d112018a6de7fc3d35ad3a2181ddfa69
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SHA512
7bd633f12945f659bf86130d4cae6a1d5c78f0e13bdbd8ad2e3347da9cbbf4a823c01f0c551333dd86aefde097c96d9a60ad633320bba3de2f7c75968bf9b0ec
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Modifies initial root filesystem image
Overwrites initrd/ initramfs image in the /boot mountpoint.
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Changes its process name
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Executes dropped EXE
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Modifies PAM framework files
Modifies Linux PAM framework files, possibly to intercept credentials.
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Modifies Polkit authorization policy
Modifies rule/ action files in Polkit, possibly to grant additional privileges.
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Reads EFI boot settings
Reads EFI boot settings from the efivars filesystem, may contain security secrets or sensitive data.
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Checks mountinfo of local process
Checks mountinfo of running processes which indicate if it is running in chroot jail.
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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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Deletes log files
Deletes log files on the system.
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Enumerates running processes
Discovers information about currently running processes on the system
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Reads CPU attributes
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Reads list of loaded kernel modules
Reads the list of currently loaded kernel modules, possibly to detect virtual environments.
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Write file to user bin folder
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Writes file to system 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
2Hijack Execution Flow
3Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
2Hijack Execution Flow
3Scheduled Task/Job
1