Windows WinDivert Driver Load via Image or Known IMPHASHes
Detects WinDivert-related Windows driver loads using loaded image paths or known IMPHASH values.
- Product
- windows
- Category
- driver_load
- Author
- Florian Roth (Nextron Systems) (SigmaHQ), DRL 1.1
- Published
- 2021-07-30
- Updated
- 2026-07-31
ATT&CK techniques
Defense Evasion → CollectionRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Discovery
Lateral Movement
C2
Exfiltration
Impact
What it detects
This rule flags loading of the WinDivert-related Windows driver by matching the loaded image path names (e.g., WinDivert.sys, WinDivert64.sys and alternate filenames) or known IMPHASH values. Attackers may use this capability for packet capture, modification, blocking, or reinjection to support credential access, collection, or defense impairment. It relies on driver load telemetry that includes the loaded image path and file hashes (IMPHASH) for the kernel driver.
Reporting behind it
Changelog
v2- v2Candidate ingested via manual entry.2026-07-31
- v1No changelog recorded for this version.2026-07-30
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
title: Windows WinDivert Driver Load via Image or Known IMPHASHes
id: a6043d93-90f0-44d6-8784-63e81532370d
status: test
description: This rule flags loading of the WinDivert-related Windows driver by matching the loaded image path names (e.g., WinDivert.sys, WinDivert64.sys and alternate filenames) or known IMPHASH values. Attackers may use this capability for packet capture, modification, blocking, or reinjection to support credential access, collection, or defense impairment. It relies on driver load telemetry that includes the loaded image path and file hashes (IMPHASH) for the kernel driver.
references:
- https://reqrypt.org/windivert-doc.html
- https://rastamouse.me/ntlm-relaying-via-cobalt-strike/
- https://github.com/SigmaHQ/sigma/blob/master/rules/windows/driver_load/driver_load_win_windivert.yml
author: Florian Roth (Nextron Systems), Huntrule Team
date: 2021-07-30
modified: 2024-11-23
tags:
- attack.credential-access
- attack.collection
- attack.defense-impairment
- attack.t1599.001
- attack.t1557.001
logsource:
category: driver_load
product: windows
detection:
selection:
- ImageLoaded|contains:
- \WinDivert.sys
- \WinDivert64.sys
- \NordDivert.sys
- \lingtiwfp.sys
- \eswfp.sys
- Hashes|contains:
- IMPHASH=0604bb7cb4bb851e2168d5c7d9399087
- IMPHASH=2e5f0e649d97f32b03c09e4686d0574f
- IMPHASH=52f8aa269f69f0edad9e8fcdaedce276
- IMPHASH=c0e5d314da39dbf65a2dbff409cc2c76
- IMPHASH=58623490691babe8330adc81cd04a663
- IMPHASH=8ee39b48656e4d6b8459d7ba7da7438b
- IMPHASH=45ee545ae77e8d43fc70ede9efcd4c96
- IMPHASH=a1b2e245acd47e4a348e1a552a02859a
- IMPHASH=2a5f85fe4609461c6339637594fa9b0a
- IMPHASH=6b2c6f95233c2914d1d488ee27531acc
- IMPHASH=9f2fdd3f9ab922bbb0560a7df46f4342
- IMPHASH=d8a719865c448b1bd2ec241e46ac1c88
- IMPHASH=0ea54f8c9af4a2fe8367fa457f48ed38
- IMPHASH=9d519ae0a0864d6d6ae3f8b6c9c70af6
- IMPHASH=a74929edfc3289895e3f2885278947ae
- IMPHASH=a66b476c2d06c370f0a53b5537f2f11e
- IMPHASH=bdcd836a46bc2415773f6b5ea77a46e4
- IMPHASH=c28cd6ccd83179e79dac132a553693d9
condition: selection
falsepositives:
- Legitimate WinDivert driver usage
level: high
license: DRL-1.1
related:
- id: 679085d5-f427-4484-9f58-1dc30a7c426d
type: derived