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YARA · ditekSHen detection

DITEKSHEN_MALWARE_Win_Shellcodedlei

Detects shellcode downloader, executer, injector

MalwareShellcodedleiditekSHen 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 shellcode downloader, executer, injector

Associated malware family: Shellcodedlei.

Targets: Windows PE.

It defines 10 patterns (10 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-shellcodedlei.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Shellcodedlei : FILE
{
	meta:
		description = "Detects shellcode downloader, executer, injector"
		author = "ditekSHen"
		id = "62a4f141-87f8-596a-adf6-5bf9a50c9e91"
		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#L7287-L7304"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "064c17427ae6b33ffb09a14abcb924d20ead44250e8bd03070bf40869f1c812e"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "PPidSpoof" fullword ascii
		$s2 = "ProcHollowing" fullword ascii
		$s3 = "CreateProcess" fullword ascii
		$s4 = "DynamicCodeInject" fullword ascii
		$s5 = "PPIDDynCodeInject" fullword ascii
		$s6 = "MapAndStart" fullword ascii
		$s7 = "PPIDAPCInject" fullword ascii
		$s8 = "PPIDDLLInject" fullword ascii
		$s9 = "CopyShellcode" fullword ascii
		$s10 = "GetEntryFromBuffer" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and filesize < 100KB and 5 of ( $s* )
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$s1text"PPidSpoof"fullword ascii
$s2text"ProcHollowing"fullword ascii
$s3text"CreateProcess"fullword ascii
$s4text"DynamicCodeInject"fullword ascii
$s5text"PPIDDynCodeInject"fullword ascii
$s6text"MapAndStart"fullword ascii
$s7text"PPIDAPCInject"fullword ascii
$s8text"PPIDDLLInject"fullword ascii
$s9text"CopyShellcode"fullword ascii
$s10text"GetEntryFromBuffer"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and filesize < 100KB and 5 of ( $s* )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • The file must be smaller than 100KB (a cheap guard that skips large files).
  • At least 5 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: 62a4f141-87f8-596a-adf6-5bf9a50c9e91

Tags:FILE

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