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MALPEDIA_Win_Atmii_Auto

autogenerated rule brought to you by yara-signator

MalwareAtmiiMalpedia 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: Atmii.

It defines 16 patterns (0 text, 16 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-atmii-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Atmii_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c7c01191-50b0-5ad0-a009-fd7f964091d9"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.atmii"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.atmii_auto.yar#L1-L172"
		license_url = "N/A"
		logic_hash = "3f4bd7b8fd71f185a58521e204b622591bcdf21f470e6208d0e56d3beec6c1c2"
		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 = { 57 8b3d???????? 884dfc 8d4dfc 51 68???????? }
		$sequence_1 = { be???????? 8bf8 e8???????? ffd3 }
		$sequence_2 = { ff15???????? 8bf0 68???????? 85f6 0f84c8000000 6879020000 }
		$sequence_3 = { 8b55f8 52 68???????? 68a0000000 }
		$sequence_4 = { 8d56e0 83fa03 0f879b000000 ff249500160010 807df900 8a4dfa 740c }
		$sequence_5 = { 51 e8???????? 8b5608 8b3d???????? 83c414 }
		$sequence_6 = { 760c 2bca 83c104 f7d1 894ded eb08 }
		$sequence_7 = { 5e 8be5 5d c3 33c0 8945dd }
		$sequence_8 = { 68bd000000 8d95dcfbffff 68???????? 52 }
		$sequence_9 = { 68a8000000 8d85dcfbffff 68???????? 50 ffd7 }
		$sequence_10 = { 85c0 7539 68???????? 6882000000 8d8ddcfbffff 68???????? 51 }
		$sequence_11 = { 83c410 8d9d00feffff e8???????? e8???????? 66a3???????? }
		$sequence_12 = { 51 ffd7 85c0 750a 6a01 e8???????? }
		$sequence_13 = { 752e ff15???????? 50 68???????? 688a000000 8d8ddcfbffff }
		$sequence_14 = { 51 6a00 68???????? 68???????? ffd6 8b35???????? 8d95fcfeffff }
		$sequence_15 = { 68???????? 8d45cc 50 eb4e 68???????? 8d4dcc }

	condition:
		7 of them and filesize < 49152
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 57 8b3d???????? 884dfc 8d4dfc 51 68???????? }
$sequence_1hex{ be???????? 8bf8 e8???????? ffd3 }
$sequence_2hex{ ff15???????? 8bf0 68???????? 85f6 0f84c8000000 6879020000 }
$sequence_3hex{ 8b55f8 52 68???????? 68a0000000 }
$sequence_4hex{ 8d56e0 83fa03 0f879b000000 ff249500160010 807df900 8a4dfa 740c }
$sequence_5hex{ 51 e8???????? 8b5608 8b3d???????? 83c414 }
$sequence_6hex{ 760c 2bca 83c104 f7d1 894ded eb08 }
$sequence_7hex{ 5e 8be5 5d c3 33c0 8945dd }
$sequence_8hex{ 68bd000000 8d95dcfbffff 68???????? 52 }
$sequence_9hex{ 68a8000000 8d85dcfbffff 68???????? 50 ffd7 }
$sequence_10hex{ 85c0 7539 68???????? 6882000000 8d8ddcfbffff 68???????? 51 }
$sequence_11hex{ 83c410 8d9d00feffff e8???????? e8???????? 66a3???????? }
$sequence_12hex{ 51 ffd7 85c0 750a 6a01 e8???????? }
$sequence_13hex{ 752e ff15???????? 50 68???????? 688a000000 8d8ddcfbffff }
$sequence_14hex{ 51 6a00 68???????? 68???????? ffd6 8b35???????? 8d95fcfeffff }
$sequence_15hex{ 68???????? 8d45cc 50 eb4e 68???????? 8d4dcc }

Condition

7 of them and filesize < 49152

In plain words (Heuristic)

  • The file must be smaller than 49152 (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: c7c01191-50b0-5ad0-a009-fd7f964091d9

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