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YARA · ditekSHen detection

DITEKSHEN_INDICATOR_OLE_Remotetemplate

Detects XML relations where an OLE object is refrencing an external target in dropper OOXML documents

Suspicious / huntingditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2020-11-06
Modified
2024-09-06
Score / Quality
75 / 75

What this rule detects

Detects XML relations where an OLE object is refrencing an external target in dropper OOXML documents

It defines 4 patterns (4 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
indicator-ole-remotetemplate.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_OLE_Remotetemplate
{
	meta:
		description = "Detects XML relations where an OLE object is refrencing an external target in dropper OOXML documents"
		author = "ditekSHen"
		id = "fbf40436-fc0a-5e55-89ac-5e1dd93e1833"
		date = "2020-11-06"
		modified = "2024-09-06"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/indicator_office.yar#L691-L702"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "80cc5b1a8a8899f632401956055374d265c734449e56ffeee5f0ba4911050f36"
		score = 75
		quality = 75
		tags = ""

	strings:
		$olerel = "relationships/oleObject" ascii
		$target1 = "Target=\"http" ascii
		$target2 = "Target=\"file" ascii
		$mode = "TargetMode=\"External" ascii

	condition:
		$olerel and $mode and 1 of ( $target* )
}

Strings (4 patterns)

IdentifierTypeValueModifiers
$olereltext"relationships/oleObject"ascii
$target1text"Target=\"http"ascii
$target2text"Target=\"file"ascii
$modetext"TargetMode=\"External"ascii

Condition

$olerel and $mode and 1 of ( $target* )

In plain words (Heuristic)

  • At least 1 patterns in ( $target* ) must match.
  • Pattern $olerel must be present.
  • Pattern $mode must be present.

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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: fbf40436-fc0a-5e55-89ac-5e1dd93e1833

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