Sigma rule: Potential 7za.DLL Sideloading

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-dbea922c33c4, updated 2023-06-09T00:00:00.000Z.

Rule

Title
Potential 7za.DLL Sideloading
Status
test
Level
low
Author
X__Junior
Date
2023-06-09
File
rules/windows/image_load/image_load_side_load_7za.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects potential DLL sideloading of "7za.dll"

Log source

product
windows
category
image_load

Detection

selection:
    ImageLoaded|endswith: '\7za.dll'
filter_main_legit_path:
    Image|startswith:
        - 'C:\Program Files (x86)\'
        - 'C:\Program Files\'
    ImageLoaded|startswith:
        - 'C:\Program Files (x86)\'
        - 'C:\Program Files\'
condition: selection and not 1 of filter_main_*

False positives (as the rule lists them)

  • Legitimate third party application located in "AppData" may leverage this DLL to offer 7z compression functionality and may generate false positives. Apply additional filters as needed.

Tags

  • attack.persistence
  • attack.privilege-escalation
  • attack.execution
  • attack.stealth
  • attack.t1574.001

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/image_load/image_load_side_load_7za.yml

Sources and licences

  • SigmaHQ

    "Potential 7za.DLL Sideloading" by X__Junior (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/image_load/image_load_side_load_7za.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Potential 7za.DLL Sideloading",
entity page, dataset version ref-dbea922c33c4, updated 2023-06-09T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/4f6edb78-5c21-42ab-a558-fd2a6fc1fd57 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 4f6edb78-5c21-42ab-a558-fd2a6fc1fd57, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.