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MALPEDIA_Win_Acridrain_Auto

autogenerated rule brought to you by yara-signator

MalwareAcridrainMalpedia 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: Acridrain.

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

Summary generated from the rule's metadata and condition.

Rule source

win-acridrain-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Acridrain_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "bd7afc4a-96c3-5173-9061-d80706c78002"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.acridrain"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.acridrain_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "b936b14efcd9e67414b3e4178fdfe38c1b2878195b522144a7e2ed6b607e702b"
		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 = { ff37 e8???????? 83c40c 8945e4 85c0 7421 6a30 }
		$sequence_1 = { ff8f00010000 8b8528ffffff 89b714010000 5f 5e 5b 8b4dfc }
		$sequence_2 = { ff248d20cb4800 ff742410 ff742410 ff7008 e8???????? 83c40c 5e }
		$sequence_3 = { ff742434 8b4634 57 ff760c ff742424 ffd0 83c410 }
		$sequence_4 = { ff75a4 ff7584 50 57 56 e8???????? 83c420 }
		$sequence_5 = { ffd0 83c414 3bc7 7406 5f 33c0 5e }
		$sequence_6 = { ffd0 8b8dccfdffff 8985d4fdffff 8a85affdffff 57 ffb5d0fdffff 884146 }
		$sequence_7 = { f6412210 0f85de000000 80792600 8b5724 8955e8 7569 f6c240 }
		$sequence_8 = { ff770c 53 e8???????? 8bf0 8d45f4 50 ff7710 }
		$sequence_9 = { 740c 50 e8???????? 8b45d8 83c404 8b5da4 f6431880 }

	condition:
		7 of them and filesize < 2244608
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ ff37 e8???????? 83c40c 8945e4 85c0 7421 6a30 }
$sequence_1hex{ ff8f00010000 8b8528ffffff 89b714010000 5f 5e 5b 8b4dfc }
$sequence_2hex{ ff248d20cb4800 ff742410 ff742410 ff7008 e8???????? 83c40c 5e }
$sequence_3hex{ ff742434 8b4634 57 ff760c ff742424 ffd0 83c410 }
$sequence_4hex{ ff75a4 ff7584 50 57 56 e8???????? 83c420 }
$sequence_5hex{ ffd0 83c414 3bc7 7406 5f 33c0 5e }
$sequence_6hex{ ffd0 8b8dccfdffff 8985d4fdffff 8a85affdffff 57 ffb5d0fdffff 884146 }
$sequence_7hex{ f6412210 0f85de000000 80792600 8b5724 8955e8 7569 f6c240 }
$sequence_8hex{ ff770c 53 e8???????? 8bf0 8d45f4 50 ff7710 }
$sequence_9hex{ 740c 50 e8???????? 8b45d8 83c404 8b5da4 f6431880 }

Condition

7 of them and filesize < 2244608

In plain words (Heuristic)

  • The file must be smaller than 2244608 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

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: bd7afc4a-96c3-5173-9061-d80706c78002

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

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