Potential RoboForm.DLL Sideloading — Sigma Rule

Rule metadata and linked tags

Author: X__Junior (Nextron Systems), Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: medium. Source dates: 2023-05-14 / not supplied.

{
  "category": "image_load",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 0960d8b9e2101ba067c88ff010b7fb3162bec990007d3fc2557779c580b22688

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

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

Original YAML and metadata in JSON

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

Source references

• https://twitter.com/StopMalvertisin/status/1648604148848549888
• https://twitter.com/t3ft3lb/status/1656194831830401024
• https://www.roboform.com/