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MALPEDIA_Win_Cheesetray_Auto

autogenerated rule brought to you by yara-signator

MalwareCheesetrayMalpedia 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: Cheesetray.

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

Summary generated from the rule's metadata and condition.

Rule source

win-cheesetray-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Cheesetray_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "0f9c31bc-6e4c-5957-8328-7964b82037be"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.cheesetray"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.cheesetray_auto.yar#L1-L132"
		license_url = "N/A"
		logic_hash = "8cf46f52f456b2b1ef3257774f88a6c406f46d28b5d167cb3590be290b3a7699"
		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 = { e8???????? 83c40c 68c0d40100 6880000000 8d8500ffffff 50 57 }
		$sequence_1 = { e8???????? 83c434 85c0 0f84c7000000 68c0d40100 6800080000 8d85b8eeffff }
		$sequence_2 = { e8???????? 83c410 85c0 0f856affffff 8bc3 5e 5b }
		$sequence_3 = { 5b 8be5 5d c3 33f6 ebd5 }
		$sequence_4 = { c70600000000 8b5d10 89465c 85db 0f8489000000 83f8fc 0f8480000000 }
		$sequence_5 = { 8bc3 897358 e8???????? 83c408 83f8ff 7457 }
		$sequence_6 = { 7403 50 ffd6 8b442430 3bc7 7403 50 }
		$sequence_7 = { 8bc8 c1f905 8b0c8d80ce4400 83e01f c1e006 8d440124 8b4d10 }
		$sequence_8 = { e8???????? 8b45f8 83c40c 53 53 8d4dec 51 }
		$sequence_9 = { 83fe15 7454 85c0 744e 833d????????00 7505 e8???????? }

	condition:
		7 of them and filesize < 8626176
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e8???????? 83c40c 68c0d40100 6880000000 8d8500ffffff 50 57 }
$sequence_1hex{ e8???????? 83c434 85c0 0f84c7000000 68c0d40100 6800080000 8d85b8eeffff }
$sequence_2hex{ e8???????? 83c410 85c0 0f856affffff 8bc3 5e 5b }
$sequence_3hex{ 5b 8be5 5d c3 33f6 ebd5 }
$sequence_4hex{ c70600000000 8b5d10 89465c 85db 0f8489000000 83f8fc 0f8480000000 }
$sequence_5hex{ 8bc3 897358 e8???????? 83c408 83f8ff 7457 }
$sequence_6hex{ 7403 50 ffd6 8b442430 3bc7 7403 50 }
$sequence_7hex{ 8bc8 c1f905 8b0c8d80ce4400 83e01f c1e006 8d440124 8b4d10 }
$sequence_8hex{ e8???????? 8b45f8 83c40c 53 53 8d4dec 51 }
$sequence_9hex{ 83fe15 7454 85c0 744e 833d????????00 7505 e8???????? }

Condition

7 of them and filesize < 8626176

In plain words (Heuristic)

  • The file must be smaller than 8626176 (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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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: 0f9c31bc-6e4c-5957-8328-7964b82037be

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