Detection rules › Elastic

Potential Memory Dumping via dd

Source
github.com/elastic/protections-artifacts

This rule detects the use of the "dd" command to read from the "/proc/<pid>/mem" file. This activity can be used to dump the memory of a running process, which can potentially include sensitive information such as credentials.

MITRE ATT&CK coverage

Rule body

[rule]
description = """
This rule detects the use of the "dd" command to read from the "/proc/<pid>/mem" file. This activity can be used to dump
the memory of a running process, which can potentially include sensitive information such as credentials.
"""
id = "966563fe-fabd-4e74-a20b-1dfca2218aa2"
license = "Elastic License v2"
name = "Potential Memory Dumping via dd"
os_list = ["linux"]
reference = ["https://github.com/huntergregal/mimipenguin"]
version = "1.0.2"

query = '''
process where event.type == "start" and event.action == "exec" and process.name == "dd" and process.args like "if=/proc/*/mem*"
'''

min_endpoint_version = "7.15.0"
optional_actions = []
[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0

[[actions]]
action = "kill_process"
field = "process.parent.entity_id"
state = 0

[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1003"
name = "OS Credential Dumping"
reference = "https://attack.mitre.org/techniques/T1003/"
[[threat.technique.subtechnique]]
id = "T1003.007"
name = "Proc Filesystem"
reference = "https://attack.mitre.org/techniques/T1003/007/"


[[threat.technique]]
id = "T1212"
name = "Exploitation for Credential Access"
reference = "https://attack.mitre.org/techniques/T1212/"


[threat.tactic]
id = "TA0006"
name = "Credential Access"
reference = "https://attack.mitre.org/tactics/TA0006/"

[internal]
min_endpoint_version = "7.15.0"

Stages and Predicates

Stage 1: process

process where event.type == "start" and event.action == "exec" and process.name == "dd" and process.args like "if=/proc/*/mem*"

Indicators

These rows show field, operator, and value matches.