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MALPEDIA_Win_Glassrat_Auto

autogenerated rule brought to you by yara-signator

MalwareGlassratMalpedia 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: Glassrat.

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

Summary generated from the rule's metadata and condition.

Rule source

win-glassrat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Glassrat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "f8a6e9f1-2316-5505-905f-c231b2b4c23c"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.glassrat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.glassrat_auto.yar#L1-L119"
		license_url = "N/A"
		logic_hash = "0bec3c726d0ad874e11ab5ede48aa2be068822b1935ab31e541a262f0fd12ab3"
		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 = { ff15???????? 85c0 7f0e 5f }
		$sequence_1 = { 7408 6a00 ff15???????? 8b842424010000 8b8c2420010000 8b942418010000 }
		$sequence_2 = { 895de0 50 56 ff15???????? }
		$sequence_3 = { 68007f0000 53 89442438 ff15???????? 53 89442438 }
		$sequence_4 = { 8b3d???????? 8d542404 56 52 33f6 ffd7 85c0 }
		$sequence_5 = { 8b45cc 50 51 ff15???????? 8b95c4feffff }
		$sequence_6 = { 53 ffd5 8b5e24 8d542410 52 }
		$sequence_7 = { 8bc8 8b4504 83e103 83f8ff f3a4 741a 6a02 }
		$sequence_8 = { 8b5e28 8d442410 50 53 ffd7 85c0 7403 }
		$sequence_9 = { 2bc2 3bc8 b802000000 0f85b4000000 }

	condition:
		7 of them and filesize < 81920
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ ff15???????? 85c0 7f0e 5f }
$sequence_1hex{ 7408 6a00 ff15???????? 8b842424010000 8b8c2420010000 8b942418010000 }
$sequence_2hex{ 895de0 50 56 ff15???????? }
$sequence_3hex{ 68007f0000 53 89442438 ff15???????? 53 89442438 }
$sequence_4hex{ 8b3d???????? 8d542404 56 52 33f6 ffd7 85c0 }
$sequence_5hex{ 8b45cc 50 51 ff15???????? 8b95c4feffff }
$sequence_6hex{ 53 ffd5 8b5e24 8d542410 52 }
$sequence_7hex{ 8bc8 8b4504 83e103 83f8ff f3a4 741a 6a02 }
$sequence_8hex{ 8b5e28 8d442410 50 53 ffd7 85c0 7403 }
$sequence_9hex{ 2bc2 3bc8 b802000000 0f85b4000000 }

Condition

7 of them and filesize < 81920

In plain words (Heuristic)

  • The file must be smaller than 81920 (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.

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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: f8a6e9f1-2316-5505-905f-c231b2b4c23c

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