CodePage Modification Via MODE.COM To Russian Language
Detects a CodePage modification using the "mode.com" utility to Russian language. This behavior has been used by threat actors behind Dharma ransomware.
Detection logic
Detection requirements
- Platform
- ContainersESXiLinuxmacOSWindows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
- Log source product
- windows
- Log source category
- process_creation
Known benign triggers
- Russian speaking people changing the CodePage
MITRE ATT&CK mappings
0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.
References
| Reference | Cited by |
|---|---|
| learn.microsoft.com/en-us/windows-server/administration/windows-commands/mode | Only this detection cites it |
| learn.microsoft.com/en-us/windows/win32/intl/code-page-identifiers | 2 |
| strontic.github.io/xcyclopedia/library/mode.com-59D1ED51ACB8C3D50F1306FD75F20E99.html | Only this detection cites it |
| www.virustotal.com/gui/file/5e75ef02517afd6e8ba6462b19217dc4a5a574abb33d10eb0f2bab49d8d48c22/behavior | Only this detection cites it |
From the source
- At source
- Open at source
- Upstream identifier
- 12fbff88-16b5-4b42-9754-cd001a789fb3
- Tagged by the source as
- attack.stealth
Licence
- Published under
- Detection Rule License 1.1Read the licence
- Attribution
- Required
Authorship
- Written by
- Published
- Aug 26, 2026
- Version
- 1