Analysis
- max time kernel
149s - max time network
153s - platform
debian-12_armhf - resource
debian12-armhf-20260127-en - resource tags
- submitted
13/08/2026, 12:20
General
- Target xd.arm
- Size 578KB
- Sample260813-phv92syshx
- SHA256 fd0e6eb71c4cd3349b08e529f4b323f1012b4643533ced1dd5de0ccdf9451245
Malware Config
Signatures
- Contacts a large (43745) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
- Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
- Deletes itself 2 IoCs
- Modifies Watchdog functionality 1 TTPs 2 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.
- Traces itself 1 IoCs
Traces itself to prevent debugging attempts
- Creates/modifies Cron job 1 TTPs 1 IoCs
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
- Enumerates active TCP sockets 1 TTPs 1 IoCs
Gets active TCP sockets from /proc virtual filesystem.
- Modifies init.d 2 TTPs 1 IoCs
Adds/modifies system service, likely for persistence.
- Modifies rc script 2 TTPs 1 IoCs
Adding/modifying system rc scripts is a common persistence mechanism.
- Changes its process name 1 IoCs
- Reads CPU attributes 1 TTPs 1 IoCs
- Reads system network configuration 1 TTPs 1 IoCs
Uses contents of /proc filesystem to enumerate network settings.
- Reads runtime system information 25 IoCs
Reads data from /proc virtual filesystem.
- Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.
Processes
-
/tmp/xd.arm/tmp/xd.arm1⤵
- Deletes itself
- Modifies Watchdog functionality
- Traces itself
- Creates/modifies Cron job
- Enumerates active TCP sockets
- Modifies init.d
- Modifies rc script
- Changes its process name
- Reads CPU attributes
- Reads system network configuration
- Reads runtime system information
- Writes file to tmp directory
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Boot or Logon Initialization Scripts
2RC Scripts
2Scheduled Task/Job
1Cron
1Privilege Escalation
Boot or Logon Autostart Execution
2Boot or Logon Initialization Scripts
2RC Scripts
2Scheduled Task/Job
1Cron
1Replay Monitor
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Downloads
sysnetd
root