Sigma rule: Password Protected Compressed File Extraction Via 7Zip

Rule

Title

Password Protected Compressed File Extraction Via 7Zip

Status

test

Level

low

Author

Nasreddine Bencherchali (Nextron Systems)

Date

2023-03-10

Modified

2026-06-05

File

rules-threat-hunting/windows/process_creation/proc_creation_win_7zip_password_extraction.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects usage of 7zip utilities (7z.exe, 7za.exe and 7zr.exe) to extract password protected zip files.

Log source

product

windows

category

process_creation

Detection

selection_img:
    - Description|contains: '7-Zip'
    - Image|endswith:
          - '\7z.exe'
          - '\7za.exe'
          - '\7zr.exe'
    - OriginalFileName:
          - '7z.exe'
          - '7za.exe'
          - '7zr.exe'
selection_password:
    CommandLine|contains|all:
        - ' -p'
        - ' x '
        - ' -o'
condition: all of selection_*

False positives (as the rule lists them)

• Legitimate activity is expected since extracting files with a password can be common in some environment.

Tags

• attack.collection
• attack.t1560.001
• detection.threat-hunting

MITRE ATT&CK ids this rule names

• T1560.001

References

• https://blog.cyble.com/2022/06/07/bumblebee-loader-on-the-rise/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-threat-hunting/windows/process_creation/proc_creation_win_7zip_password_extraction.yml