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SEKOIA_Apt_Ta410_Driver_Keylogger

Keylogger TA410

APT / threat actorSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2022-10-11
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

Keylogger TA410

Targets: Windows PE.

It defines 8 patterns (8 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
apt-ta410-driver-keylogger.yarDetection Rule License 1.1
rule SEKOIA_Apt_Ta410_Driver_Keylogger : FILE
{
	meta:
		description = "Keylogger TA410"
		author = "Sekoia.io"
		id = "0cba1b3b-b93e-41e3-a7df-afd306e6b519"
		date = "2022-10-11"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_ta410_driver_keylogger.yar#L1-L23"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "5ed152cc068f194cb7bf8c34744f0f1ebd4f621e6ae47f14bab64b18d94af4c5"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "namedpipe_keymousespy" ascii wide
		$ = "[`LCTRL]" ascii wide
		$ = "[`RCTRL]" ascii wide
		$ = "[`BREAK]" ascii wide
		$ = "[`NUMLOCK]" ascii wide
		$ = "[`L]" ascii wide
		$ = "[`R]" ascii wide
		$ = "[`M]" ascii wide

	condition:
		uint16be( 0 ) == 0x4d5a and filesize < 1MB and 3 of them
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$text"namedpipe_keymousespy"ascii wide
$text"[`LCTRL]"ascii wide
$text"[`RCTRL]"ascii wide
$text"[`BREAK]"ascii wide
$text"[`NUMLOCK]"ascii wide
$text"[`L]"ascii wide
$text"[`R]"ascii wide
$text"[`M]"ascii wide

Condition

uint16be( 0 ) == 0x4d5a and filesize < 1MB and 3 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • The file must be smaller than 1MB (a cheap guard that skips large files).
  • At least 3 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: 0cba1b3b-b93e-41e3-a7df-afd306e6b519

Metadata

version1.0
classificationTLP:CLEAR

Tags:FILE

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