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MALPEDIA_Win_Dramnudge_Auto

autogenerated rule brought to you by yara-signator

MalwareDramnudgeMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2026-05-04
Modified
2026-05-18
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Dramnudge.

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

Summary generated from the rule's metadata and condition.

Rule source

win-dramnudge-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Dramnudge_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "4e1e9905-62de-5567-9ed7-a82928870a8c"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.dramnudge"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.dramnudge_auto.yar#L1-L90"
		license_url = "N/A"
		logic_hash = "221dd8bcd930b6121a924fbe6761de15c83c657ddce0c9178183beb8828f75f7"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20260422"
		malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
		malpedia_version = "20260504"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { 014218 eb18 03c3 8bd3 }
		$sequence_1 = { 000c00 20b140005f5f 7277 7374 }
		$sequence_2 = { 014318 8b430c 2b4308 03c6 }
		$sequence_3 = { 000c00 e0d9 40 007374 }
		$sequence_4 = { 014318 8b4318 8b55f8 03d6 }
		$sequence_5 = { 007374 643a3a 7275 6e }
		$sequence_6 = { 0000 90 000c00 20b140005f5f }
		$sequence_7 = { 014318 eb5b 33f6 eb01 }

	condition:
		7 of them and filesize < 1294336
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 014218 eb18 03c3 8bd3 }
$sequence_1hex{ 000c00 20b140005f5f 7277 7374 }
$sequence_2hex{ 014318 8b430c 2b4308 03c6 }
$sequence_3hex{ 000c00 e0d9 40 007374 }
$sequence_4hex{ 014318 8b4318 8b55f8 03d6 }
$sequence_5hex{ 007374 643a3a 7275 6e }
$sequence_6hex{ 0000 90 000c00 20b140005f5f }
$sequence_7hex{ 014318 eb5b 33f6 eb01 }

Condition

7 of them and filesize < 1294336

In plain words (Heuristic)

  • The file must be smaller than 1294336 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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References

Licence & attribution

Author: Felix Bilstein - yara-signator at cocacoding dot com

Source repository: Malpedia signator rules @ c901f97b7d

Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)

Original rule

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

Rule id: 4e1e9905-62de-5567-9ed7-a82928870a8c

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE