Emerging Threathightest
Ps.exe Renamed SysInternals Tool
Detects renamed SysInternals tool execution with a binary named ps.exe as used by Dragonfly APT group and documented in TA17-293A report
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Launch
Florian Roth (Nextron Systems)Created Sun Oct 22Updated Tue May 0218da1007-3f26-470f-875d-f77faf1cab312017
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
detection:
selection:
CommandLine|contains|all:
- 'ps.exe -accepteula'
- '-s cmd /c netstat'
condition: selectionFalse Positives
Renamed SysInternals tool
References
MITRE ATT&CK
Tactics
Sub-techniques
Groups
CAR Analytics
2013-05-009 · CAR 2013-05-009
Other
detection.emerging-threats
Rule Metadata
Rule ID
18da1007-3f26-470f-875d-f77faf1cab31
Status
test
Level
high
Type
Emerging Threat
Created
Sun Oct 22
Modified
Tue May 02
Path
rules-emerging-threats/2017/TA/Dragonfly/proc_creation_win_apt_ta17_293a_ps.yml
Raw Tags
attack.defense-evasionattack.g0035attack.t1036.003car.2013-05-009detection.emerging-threats