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DITEKSHEN_MALWARE_Win_Parallaxrat

Detects ParallaxRAT

MalwareParallaxratditekSHen 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 ParallaxRAT

Associated malware family: Parallaxrat.

Targets: Windows PE.

It defines 9 patterns (8 text, 1 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-parallaxrat.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Parallaxrat : FILE
{
	meta:
		description = "Detects ParallaxRAT"
		author = "ditekSHen"
		id = "e602b28f-ae5d-52af-b1c5-5c41776dd4c5"
		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#L3311-L3328"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "7fd94dee44079b595b906f1687f44b51b8cebabbeb0900563b8d4fcc0e46bdd0"
		score = 75
		quality = 75
		tags = "FILE"
		clamav_sig = "MALWARE.Win.Trojan.ParallaxRAT"

	strings:
		$s1 = "[Clipboard End]" fullword wide
		$s2 = "[Ctrl +" fullword wide
		$s3 = "[Alt +" fullword wide
		$s4 = "Clipboard Start" wide
		$s5 = "(Wscript.ScriptFullName)" wide
		$s6 = "CSDVersion" fullword ascii
		$s7 = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion" fullword ascii
		$x1 = { 2e 65 78 65 00 00 84 00 00 4d 5a 90 00 }
		$x2 = "This program cannot be run in DOS mode" ascii

	condition:
		(( uint16( 0 ) == 0x5a4d and all of ( $s* ) ) or all of them )
}

Strings (9 patterns)

IdentifierTypeValueModifiers
$s1text"[Clipboard End]"fullword wide
$s2text"[Ctrl +"fullword wide
$s3text"[Alt +"fullword wide
$s4text"Clipboard Start"wide
$s5text"(Wscript.ScriptFullName)"wide
$s6text"CSDVersion"fullword ascii
$s7text"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion"fullword ascii
$x1hex{ 2e 65 78 65 00 00 84 00 00 4d 5a 90 00 }
$x2text"This program cannot be run in DOS mode"ascii

Condition

(( uint16( 0 ) == 0x5a4d and all of ( $s* ) ) or all of them )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • All patterns in ( $s* ) must match.
  • All patterns in the rule 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: e602b28f-ae5d-52af-b1c5-5c41776dd4c5

Metadata

clamav_sigMALWARE.Win.Trojan.ParallaxRAT

Tags:FILE

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