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MALPEDIA_Win_Dorshel_Auto

autogenerated rule brought to you by yara-signator

MalwareDorshelMalpedia 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: Dorshel.

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

Summary generated from the rule's metadata and condition.

Rule source

win-dorshel-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Dorshel_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "550d8628-f52a-56de-91a7-ece0c38b96fb"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.dorshel"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.dorshel_auto.yar#L1-L124"
		license_url = "N/A"
		logic_hash = "364203df24c6a83e17731caab6caa244bb9a531055fdc65fef6d763de8c4fb40"
		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 = { 55 8bec 83ec0c 31c0 648b5030 8b520c 8b5214 }
		$sequence_1 = { 8d7708 8b3f 33fb f3a4 5f }
		$sequence_2 = { 03f8 84c0 75f6 81ff5e515e83 7408 81ff36cadb30 75da }
		$sequence_3 = { 83c004 e2f9 58 54 50 }
		$sequence_4 = { 51 8b0f 33cb 51 ff55f8 8b5df4 }
		$sequence_5 = { 54 50 8b4f04 33cb 51 8b0f }
		$sequence_6 = { ffd5 85c0 74cd 8b07 01c3 }
		$sequence_7 = { ac c1cf0d 03f8 84c0 75f6 81ff5e515e83 7408 }
		$sequence_8 = { 57 6800200000 53 56 68129689e2 ffd5 85c0 }
		$sequence_9 = { 5f 8b4704 33c3 83c104 99 }

	condition:
		7 of them and filesize < 24576
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 55 8bec 83ec0c 31c0 648b5030 8b520c 8b5214 }
$sequence_1hex{ 8d7708 8b3f 33fb f3a4 5f }
$sequence_2hex{ 03f8 84c0 75f6 81ff5e515e83 7408 81ff36cadb30 75da }
$sequence_3hex{ 83c004 e2f9 58 54 50 }
$sequence_4hex{ 51 8b0f 33cb 51 ff55f8 8b5df4 }
$sequence_5hex{ 54 50 8b4f04 33cb 51 8b0f }
$sequence_6hex{ ffd5 85c0 74cd 8b07 01c3 }
$sequence_7hex{ ac c1cf0d 03f8 84c0 75f6 81ff5e515e83 7408 }
$sequence_8hex{ 57 6800200000 53 56 68129689e2 ffd5 85c0 }
$sequence_9hex{ 5f 8b4704 33c3 83c104 99 }

Condition

7 of them and filesize < 24576

In plain words (Heuristic)

  • The file must be smaller than 24576 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

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: 550d8628-f52a-56de-91a7-ece0c38b96fb

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