Detection rules › Sigma
Sysprep on AppData Folder
Detects suspicious sysprep process start with AppData folder as target (as used by Trojan Syndicasec in Thrip report by Symantec)
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | T1059 Command and Scripting Interpreter |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
| Security-Auditing | Event ID 4688 | A new process has been created. |
Rule body yaml
title: Sysprep on AppData Folder
id: d5b9ae7a-e6fc-405e-80ff-2ff9dcc64e7e
status: test
description: Detects suspicious sysprep process start with AppData folder as target (as used by Trojan Syndicasec in Thrip report by Symantec)
references:
- https://www.symantec.com/blogs/threat-intelligence/thrip-hits-satellite-telecoms-defense-targets
- https://app.any.run/tasks/61a296bb-81ad-4fee-955f-3b399f4aaf4b
author: Florian Roth (Nextron Systems)
date: 2018-06-22
modified: 2021-11-27
tags:
- attack.execution
- attack.t1059
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith: '\sysprep.exe'
CommandLine|contains: '\AppData\'
condition: selection
falsepositives:
- False positives depend on scripts and administrative tools used in the monitored environment
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '\sysprep.exe'
CommandLine|contains: '\AppData\'
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 |
|
Image | ends_with |
|