Potentially Suspicious Ping/Copy Command Combination

Severity: medium
Author: X__Junior (Nextron Systems)
Source: upstream

Detects uncommon and potentially suspicious one-liner command containing both "ping" and "copy" at the same time, which is usually used by malware.

MITRE ATT&CK coverage

Tactic	Techniques
Defense Evasion	`T1070.004` Indicator Removal: File Deletion

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `all of selection_cmd`

or:
Image|endswith: '\cmd.exe'
OriginalFileName: Cmd.Exe

Stage 2: `all of selection_action`

CommandLine|contains: 'copy '
CommandLine|contains: ping

Stage 3: `all of selection_cli_1`

CommandLine|contains: ' -n '

Stage 4: `all of selection_cli_2`

CommandLine|contains: ' -y '

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`CommandLine`	match	`-n` corpus 5 (sigma 5) `-y` `copy` corpus 11 (sigma 11) `ping` corpus 4 (sigma 4)
`Image`	ends_with	`\cmd.exe` corpus 92 (sigma 92)
`OriginalFileName`	eq	`Cmd.Exe` corpus 32 (sigma 30, splunk 2)

Potentially Suspicious Ping/Copy Command Combination

MITRE ATT&CK coverage

Event coverage

Stages and Predicates

Stage 1: all of selection_cmd

Stage 2: all of selection_action

Stage 3: all of selection_cli_1

Stage 4: all of selection_cli_2

Indicators

Stage 1: `all of selection_cmd`

Stage 2: `all of selection_action`

Stage 3: `all of selection_cli_1`

Stage 4: `all of selection_cli_2`