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MALPEDIA_Win_Ayegent_Auto

autogenerated rule brought to you by yara-signator

MalwareAyegentMalpedia 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: Ayegent.

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

Summary generated from the rule's metadata and condition.

Rule source

win-ayegent-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ayegent_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "ced11e8d-8efd-5b26-929c-fa1cb31d81f3"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ayegent"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ayegent_auto.yar#L1-L127"
		license_url = "N/A"
		logic_hash = "ba5d5de854dff7a7f643a8b1e7c7fe4de58085b126949eb8bd1d550389e21c48"
		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 = { a1???????? 8d542400 52 50 ff15???????? 8b4c2428 8b542424 }
		$sequence_1 = { 51 6804010000 aa e8???????? 83c408 ffd5 }
		$sequence_2 = { 885c2420 f3ab 66ab 8d4c2420 51 6804010000 aa }
		$sequence_3 = { 770e 8088????????20 8ac8 80e920 ebe0 80a0609d400000 40 }
		$sequence_4 = { ff15???????? 8d542420 50 52 8d442428 68???????? }
		$sequence_5 = { 8d7c2421 885c2420 f3ab 66ab 8d4c2420 51 }
		$sequence_6 = { 6808020000 50 53 68???????? 68???????? 885c2428 ffd5 }
		$sequence_7 = { 66ab aa 8d442408 56 50 }
		$sequence_8 = { 53 68???????? 8d4c2428 68???????? 51 68???????? }
		$sequence_9 = { 66ab aa 8d442420 50 6a00 e8???????? }

	condition:
		7 of them and filesize < 90112
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ a1???????? 8d542400 52 50 ff15???????? 8b4c2428 8b542424 }
$sequence_1hex{ 51 6804010000 aa e8???????? 83c408 ffd5 }
$sequence_2hex{ 885c2420 f3ab 66ab 8d4c2420 51 6804010000 aa }
$sequence_3hex{ 770e 8088????????20 8ac8 80e920 ebe0 80a0609d400000 40 }
$sequence_4hex{ ff15???????? 8d542420 50 52 8d442428 68???????? }
$sequence_5hex{ 8d7c2421 885c2420 f3ab 66ab 8d4c2420 51 }
$sequence_6hex{ 6808020000 50 53 68???????? 68???????? 885c2428 ffd5 }
$sequence_7hex{ 66ab aa 8d442408 56 50 }
$sequence_8hex{ 53 68???????? 8d4c2428 68???????? 51 68???????? }
$sequence_9hex{ 66ab aa 8d442420 50 6a00 e8???????? }

Condition

7 of them and filesize < 90112

In plain words (Heuristic)

  • The file must be smaller than 90112 (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: ced11e8d-8efd-5b26-929c-fa1cb31d81f3

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