Detection rules › Sigma
Potential RoboForm.DLL Sideloading
Detects potential DLL sideloading of "roboform.dll", a DLL used by RoboForm Password Manager
Known false positives
- If installed on a per-user level, the path would be located in "AppData\Local". Add additional filters to reflect this mode of installation
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | |
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 7: Image loaded |
Rule body
title: Potential RoboForm.DLL Sideloading
id: f64c9b2d-b0ad-481d-9d03-7fc75020892a
status: test
description: Detects potential DLL sideloading of "roboform.dll", a DLL used by RoboForm Password Manager
references:
- https://twitter.com/StopMalvertisin/status/1648604148848549888
- https://twitter.com/t3ft3lb/status/1656194831830401024
- https://www.roboform.com/
author: X__Junior (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-14
tags:
- attack.persistence
- attack.privilege-escalation
- attack.execution
- attack.stealth
- attack.t1574.001
logsource:
category: image_load
product: windows
detection:
selection:
ImageLoaded|endswith:
- '\roboform.dll'
- '\roboform-x64.dll'
filter_main_path:
Image|startswith:
- ' C:\Program Files (x86)\Siber Systems\AI RoboForm\'
- ' C:\Program Files\Siber Systems\AI RoboForm\'
Image|endswith:
- '\robotaskbaricon.exe'
- '\robotaskbaricon-x64.exe'
condition: selection and not 1 of filter_main_*
falsepositives:
- If installed on a per-user level, the path would be located in "AppData\Local". Add additional filters to reflect this mode of installation
level: medium
Stages and Predicates
Stage 0: condition
selection and not 1 of filter_main_*Stage 1: selection
selection:
ImageLoaded|endswith:
- '\roboform.dll'
- '\roboform-x64.dll'
Stage 2: not filter_main_path
filter_main_path:
Image|startswith:
- ' C:\Program Files (x86)\Siber Systems\AI RoboForm\'
- ' C:\Program Files\Siber Systems\AI RoboForm\'
Image|endswith:
- '\robotaskbaricon.exe'
- '\robotaskbaricon-x64.exe'
Exclusions
The rule actively suppresses these predicates.
| Field | Kind | Excluded values | Search |
|---|---|---|---|
Image | ends_with | \robotaskbaricon-x64.exe | excludes:Image field:"Image" value:"\robotaskbaricon-x64.exe" |
Image | ends_with | \robotaskbaricon.exe | excludes:Image field:"Image" value:"\robotaskbaricon.exe" |
Image | starts_with | C:\Program Files (x86)\Siber Systems\AI RoboForm\ | excludes:Image field:"Image" value:" C:\Program Files (x86)\Siber Systems\AI RoboForm\" |
Image | starts_with | C:\Program Files\Siber Systems\AI RoboForm\ | excludes:Image field:"Image" value:" C:\Program Files\Siber Systems\AI RoboForm\" |
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
ImageLoaded | ends_with |
| field:"ImageLoaded" kind:ends_with |