detection.wiki

Detection rules › Sigma

Network Connection Initiated By Eqnedt32.EXE

Status
test
Severity
high
Log source
product windows, category network_connection
Author
Max Altgelt (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects network connections from the Equation Editor process "eqnedt32.exe".

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1203 Exploitation for Client Execution

Event coverage

ProviderEventTitle
SysmonEvent ID 3Network connection

Rule body yaml

title: Network Connection Initiated By Eqnedt32.EXE
id: a66bc059-c370-472c-a0d7-f8fd1bf9d583
status: test
description: Detects network connections from the Equation Editor process "eqnedt32.exe".
references:
    - https://twitter.com/forensicitguy/status/1513538712986079238
    - https://forensicitguy.github.io/xloader-formbook-velvetsweatshop-spreadsheet/
    - https://news.sophos.com/en-us/2019/07/18/a-new-equation-editor-exploit-goes-commercial-as-maldoc-attacks-using-it-spike/
author: Max Altgelt (Nextron Systems)
date: 2022-04-14
modified: 2024-05-31
tags:
    - attack.execution
    - attack.t1203
logsource:
    category: network_connection
    product: windows
detection:
    selection:
        Image|endswith: '\eqnedt32.exe'
    condition: selection
falsepositives:
    - Unlikely
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    Image|endswith: '\eqnedt32.exe'

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.

FieldKindValues
Imageends_with
  • \eqnedt32.exe corpus 6 (sigma 6)