Synopsis
Activation Period |
14 Days |
Training Period |
30 Days |
Test Period |
N/A (single event) |
Deduplication Period |
1 Day |
Required Data |
|
Detection Modules |
|
Detector Tags |
Shell Analytics |
ATT&CK Tactic |
Execution (TA0002) |
ATT&CK Technique |
|
Severity |
Informational |
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Variations
Uncommon Linux shell command execution by a BAS solution
Synopsis
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution disabling firewall
Synopsis
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
High |
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution, possibly running LinPEAS
Synopsis
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
High |
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution using exploitation tool
Synopsis
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution taking a screenshot
Synopsis
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Low |
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution trying to gather information about the system
Synopsis
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Low |
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution loading a kernel module
Synopsis
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Low |
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution, possibly granting file execution permissions
Synopsis
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Low |
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution running a network tool
Synopsis
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Low |
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution setting a scheduled task
Synopsis
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution running a process kill command
Synopsis
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution with su/sudo elevation
Synopsis
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution accessing history (e.g. bash history or login records)
Synopsis
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Informational |
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution from a scripting language interpreter
Synopsis
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.
Uncommon Linux shell command execution executed from within a web server
Synopsis
Description
An unusual process execution of a shell command on Linux. This action may indicate possible exploitation or shell command execution via a backdoor.
Attacker's Goals
An attacker may attempt to execute a malicious shell command on the system.
Investigative actions
- Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.
- Check the executed shell command (and possible child processes) for malicious actions.