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MALPEDIA_Win_Devopt_Auto

autogenerated rule brought to you by yara-signator

MalwareDevoptMalpedia 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: Devopt.

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

Summary generated from the rule's metadata and condition.

Rule source

win-devopt-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Devopt_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c196c87a-940f-5170-bdeb-5480f0772987"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.devopt"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.devopt_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "d44283c361e67f2f245bfc24e6c20517af3480cb8098b2e4e26bd4743afb76d5"
		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 = { eb47 8b45fc 0fb6809e030000 50 8b45fc 8a889d030000 8b45fc }
		$sequence_1 = { ff15???????? 8b45f4 8d4060 50 6863090000 6a00 6a09 }
		$sequence_2 = { eb0f 8b45fc 8b4050 8b55fc 8b4dfc ff514c 89ec }
		$sequence_3 = { f77dac 0fb755cc 8d0410 66894588 0fb745c6 0fb755ce 29d0 }
		$sequence_4 = { eb36 807dd8b3 7530 0fb645d4 2d80000000 83f824 7322 }
		$sequence_5 = { ff526c 8845f0 660fb645f0 66250100 66a9ffff 7502 eb09 }
		$sequence_6 = { eb2a 6a00 8d45e8 50 66b90000 66ba0000 66b80000 }
		$sequence_7 = { eb46 8b45fc 8b4034 8b55fc 8b4dfc 8b4934 ff91fc000000 }
		$sequence_8 = { e8???????? 8d7600 b801000000 89f1 d3e0 8d50ff 21da }
		$sequence_9 = { ff75c0 8b4dbc 8b55c4 8d45ec e8???????? 84c0 7509 }

	condition:
		7 of them and filesize < 4645888
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ eb47 8b45fc 0fb6809e030000 50 8b45fc 8a889d030000 8b45fc }
$sequence_1hex{ ff15???????? 8b45f4 8d4060 50 6863090000 6a00 6a09 }
$sequence_2hex{ eb0f 8b45fc 8b4050 8b55fc 8b4dfc ff514c 89ec }
$sequence_3hex{ f77dac 0fb755cc 8d0410 66894588 0fb745c6 0fb755ce 29d0 }
$sequence_4hex{ eb36 807dd8b3 7530 0fb645d4 2d80000000 83f824 7322 }
$sequence_5hex{ ff526c 8845f0 660fb645f0 66250100 66a9ffff 7502 eb09 }
$sequence_6hex{ eb2a 6a00 8d45e8 50 66b90000 66ba0000 66b80000 }
$sequence_7hex{ eb46 8b45fc 8b4034 8b55fc 8b4dfc 8b4934 ff91fc000000 }
$sequence_8hex{ e8???????? 8d7600 b801000000 89f1 d3e0 8d50ff 21da }
$sequence_9hex{ ff75c0 8b4dbc 8b55c4 8d45ec e8???????? 84c0 7509 }

Condition

7 of them and filesize < 4645888

In plain words (Heuristic)

  • The file must be smaller than 4645888 (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: c196c87a-940f-5170-bdeb-5480f0772987

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