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SEKOIA_Keylogger_Win_Donot

Detect the DoNot's keylogger malware

MalwareDonotSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2023-03-20
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

Detect the DoNot's keylogger malware

Associated malware family: Donot.

It defines 2 patterns (2 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

keylogger-win-donot.yarDetection Rule License 1.1
rule SEKOIA_Keylogger_Win_Donot
{
	meta:
		description = "Detect the DoNot's keylogger malware"
		author = "Sekoia.io"
		id = "4f67dda7-da68-4496-a8b4-a8a769ddd763"
		date = "2023-03-20"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/keylogger_win_donot.yar#L1-L16"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "eb935f84335e934346511b4108f70df469deef6ecaaba809c144197c04a28f64"
		score = 75
		quality = 80
		tags = ""
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "iwrct2mTFAu0ew1nyqQgoaNtNo0+52R0XiTKbwy1W48Bn1b2YcNt0+tptyY6oGoAeLDGekM/yHcdikNGi8bLqkUQ8CIdkWeT3QiympOTfjs="
		$ = "ZmVwZW9kbWZ2c24ucHMuZ3h4LngweXBvdWpkYm1qcXE7YnFmVXp1LmZvb3VEcA=="

	condition:
		1 of them
}

Strings (2 patterns)

IdentifierTypeValueModifiers
$text"iwrct2mTFAu0ew1nyqQgoaNtNo0+52R0XiTKbwy1W48Bn1b2YcNt0+tptyY6oGoAeLDGekM/yHcdikNGi8bLqkUQ8CIdkWeT3QiympOTfjs="
$text"ZmVwZW9kbWZ2c24ucHMuZ3h4LngweXBvdWpkYm1qcXE7YnFmVXp1LmZvb3VEcA=="

Condition

1 of them

In plain words (Heuristic)

  • At least 1 patterns in the rule must match.

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References

Licence & attribution

Author: Sekoia.io

Source repository: SEKOIA.IO Community @ a438a5901a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 4f67dda7-da68-4496-a8b4-a8a769ddd763

Metadata

version1.0
classificationTLP:CLEAR

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