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DITEKSHEN_MALWARE_Win_Xenorat

Detects Blacksuit

MalwareXenoratditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekshen
Date
2020-11-06
Modified
2024-11-01
Score / Quality
75 / 75

What this rule detects

Detects Blacksuit

Associated malware family: Xenorat.

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
malware-win-xenorat.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Xenorat : FILE
{
	meta:
		description = "Detects Blacksuit"
		author = "ditekshen"
		id = "7f27ebef-8a0e-591a-a926-ac950db86053"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L11805-L11820"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "487046464f545fb9e4a1d6e277cdc010eac6886583f0b388555a483d9021191b"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$x1 = "xeno rat client" wide
		$x2 = "xeno_rat_client." ascii
		$x3 = "xeno rat client" ascii
		$s1 = "+<AddToStartupNonAdmin>" ascii
		$s2 = "+<ConnectAndSetupAsync>" ascii
		$s3 = "+<SendUpdateInfo>" ascii
		$s4 = "+<RecvAllAsync_ddos_" ascii
		$s5 = "Plugin.Chromium+<Get" ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( ( 1 of ( $x* ) and 2 of ( $s* ) ) or ( 4 of ( $s* ) ) or ( 2 of ( $x* ) ) )
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$x1text"xeno rat client"wide
$x2text"xeno_rat_client."ascii
$x3text"xeno rat client"ascii
$s1text"+<AddToStartupNonAdmin>"ascii
$s2text"+<ConnectAndSetupAsync>"ascii
$s3text"+<SendUpdateInfo>"ascii
$s4text"+<RecvAllAsync_ddos_"ascii
$s5text"Plugin.Chromium+<Get"ascii

Condition

uint16( 0 ) == 0x5a4d and ( ( 1 of ( $x* ) and 2 of ( $s* ) ) or ( 4 of ( $s* ) ) or ( 2 of ( $x* ) ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 1 patterns in ( $x* ) must match.
  • At least 2 patterns in ( $s* ) must match.
  • At least 4 patterns in ( $s* ) must match.
  • At least 2 patterns in ( $x* ) must match.

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References

Licence & attribution

Author: ditekshen

Source repository: ditekSHen detection @ e76c93dcde

Licence: BSD 2-Clause License (repository licence)

Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).

Original rule

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

Rule id: 7f27ebef-8a0e-591a-a926-ac950db86053

Tags:FILE

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