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Detection rules › Sigma

PCRE.NET Package Image Load

Status
test
Severity
high
Log source
category image_load, product windows
Author
Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
Source
github.com/SigmaHQ/sigma

Detects processes loading modules related to PCRE.NET package

MITRE ATT&CK coverage

TacticTechniques
Execution

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 7: Image loaded

Rule body

title: PCRE.NET Package Image Load
id: 84b0a8f3-680b-4096-a45b-e9a89221727c
status: test
description: Detects processes loading modules related to PCRE.NET package
references:
    - https://twitter.com/rbmaslen/status/1321859647091970051
    - https://twitter.com/tifkin_/status/1321916444557365248
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020-10-29
modified: 2022-10-09
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: image_load
    product: windows
detection:
    selection:
        ImageLoaded|contains: \AppData\Local\Temp\ba9ea7344a4a5f591d6e5dc32a13494b\
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    ImageLoaded|contains: \AppData\Local\Temp\ba9ea7344a4a5f591d6e5dc32a13494b\

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
ImageLoadedmatch
  • \AppData\Local\Temp\ba9ea7344a4a5f591d6e5dc32a13494b\
field:"ImageLoaded" kind:match value:"\AppData\Local\Temp\ba9ea7344a4a5f591d6e5dc32a13494b\"