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MALPEDIA_Win_Cuegoe_Auto

autogenerated rule brought to you by yara-signator

MalwareCuegoeMalpedia 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: Cuegoe.

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

Summary generated from the rule's metadata and condition.

Rule source

win-cuegoe-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Cuegoe_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "ff6a6411-9fc2-53c9-bcd6-17b55366aeea"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.cuegoe"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.cuegoe_auto.yar#L1-L133"
		license_url = "N/A"
		logic_hash = "1896c3a77b34ee44dfcf57c4b1b5d2256baf5f56cd4b8e2f1d5e8cc492c98b22"
		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 = { 8bf1 897534 8d4500 33ff 50 897dfc e8???????? }
		$sequence_1 = { 8b06 8b4004 c70406???????? c745fc04000000 8b06 8b4004 c70406???????? }
		$sequence_2 = { 39742460 740a ff742460 e8???????? 59 ff742454 89742464 }
		$sequence_3 = { 50 57 e8???????? 8b450c 894730 8b4544 89473c }
		$sequence_4 = { 5f 8b4508 8903 8b450c 894304 8bc3 5e }
		$sequence_5 = { 8b80c8000000 c3 8bff 55 8bec 81ec28030000 }
		$sequence_6 = { b8f8ffffff 5b 83c430 c21800 83fe04 7415 8d44240c }
		$sequence_7 = { 7467 3d00010000 7414 56 ff7510 8d7db0 ff751c }
		$sequence_8 = { 50 e8???????? 5e 5f 5b c9 c3 }
		$sequence_9 = { 8b10 8955f8 85db 7614 52 ff75fc 8bc3 }

	condition:
		7 of them and filesize < 540672
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8bf1 897534 8d4500 33ff 50 897dfc e8???????? }
$sequence_1hex{ 8b06 8b4004 c70406???????? c745fc04000000 8b06 8b4004 c70406???????? }
$sequence_2hex{ 39742460 740a ff742460 e8???????? 59 ff742454 89742464 }
$sequence_3hex{ 50 57 e8???????? 8b450c 894730 8b4544 89473c }
$sequence_4hex{ 5f 8b4508 8903 8b450c 894304 8bc3 5e }
$sequence_5hex{ 8b80c8000000 c3 8bff 55 8bec 81ec28030000 }
$sequence_6hex{ b8f8ffffff 5b 83c430 c21800 83fe04 7415 8d44240c }
$sequence_7hex{ 7467 3d00010000 7414 56 ff7510 8d7db0 ff751c }
$sequence_8hex{ 50 e8???????? 5e 5f 5b c9 c3 }
$sequence_9hex{ 8b10 8955f8 85db 7614 52 ff75fc 8bc3 }

Condition

7 of them and filesize < 540672

In plain words (Heuristic)

  • The file must be smaller than 540672 (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: ff6a6411-9fc2-53c9-bcd6-17b55366aeea

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