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YARA · ditekSHen detection

DITEKSHEN_MALWARE_Win_UNK04

Detects unknown malware (proxy tool)

MalwareUNK04ditekSHen 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 unknown malware (proxy tool)

Associated malware family: UNK04.

Targets: Windows PE.

It defines 7 patterns (7 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-unk04.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_UNK04 : FILE
{
	meta:
		description = "Detects unknown malware (proxy tool)"
		author = "ditekSHen"
		id = "6a178f37-a9fd-5a83-a550-c6333342ac9b"
		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#L5282-L5296"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "ba6e5bbc1d094b23e3870af963503d1ccbcd56adc24126b4a38b77d4b88b4b67"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$x1 = "127.0.0.1/%d" fullword ascii
		$x2 = "SYSTEM\\CurrentControlSet\\SERVICES\\PORTPROXY\\V4TOV4\\TCP" fullword ascii
		$x3 = "%s rundll32.exe" fullword ascii
		$s1 = "kxetray.exe" fullword ascii
		$s2 = "ksafe.exe" fullword ascii
		$s3 = "Mcshield.exe" fullword ascii
		$s4 = "Miner.exe" fullword ascii

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

Strings (7 patterns)

IdentifierTypeValueModifiers
$x1text"127.0.0.1/%d"fullword ascii
$x2text"SYSTEM\\CurrentControlSet\\SERVICES\\PORTPROXY\\V4TOV4\\TCP"fullword ascii
$x3text"%s rundll32.exe"fullword ascii
$s1text"kxetray.exe"fullword ascii
$s2text"ksafe.exe"fullword ascii
$s3text"Mcshield.exe"fullword ascii
$s4text"Miner.exe"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and all of ( $x* ) and 2 of ( $s* )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • All patterns in ( $x* ) must match.
  • At least 2 patterns in ( $s* ) 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: 6a178f37-a9fd-5a83-a550-c6333342ac9b

Tags:FILE

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