Office process spawned with suspicious command-line arguments

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	XDR Agent
ATT&CK Tactic	Stealth (TA0005)
ATT&CK Technique	Process Injection: Process Hollowing (T1055.012)
Severity	Low

Description

An Office process was executed with LOLBIN-like command-line arguments. This behavior is exhibited in the VBA-RunPE tool that executes executables from the memory of Word/Excel/PowerPoint.

Attacker's Goals

Execute arbitrary code or run malicious applications undetected.

Investigative actions

Check the file that spawns the office application and search for macros, formulas, or scripts.

Variations

Masqueraded office process spawned with suspicious command-line arguments

Synopsis

Field	Value
ATT&CK Tactic	Stealth (TA0005)
ATT&CK Technique	Process Injection: Process Hollowing (T1055.012), Masquerading (T1036)
Severity	Medium

Description

An executable masquerading an office process was executed with LOLBIN-like command-line arguments.

Attacker's Goals

Execute arbitrary code or run malicious applications undetected.

Investigative actions

Check the file that spawns the office application and search for macros, formulas, or scripts.

PowerPoint process accesses a suspicious PPAM file

Synopsis

Field	Value
ATT&CK Tactic	Stealth (TA0005)
ATT&CK Technique	Process Injection: Process Hollowing (T1055.012)
Severity	Low

Description

A PowerPoint process opened a PPAM file which might be used to execute malicious code.

Attacker's Goals

Execute arbitrary code or run malicious applications undetected.

Investigative actions

Check the file that spawns the office application and search for macros, formulas, or scripts.