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MALPEDIA_Win_Sinowal_Auto

autogenerated rule brought to you by yara-signator

MalwareSinowalMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2026-01-05
Modified
2026-01-06
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Sinowal.

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

Summary generated from the rule's metadata and condition.

Rule source

win-sinowal-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Sinowal_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "1f893f7f-89f2-5c9f-9fc2-27e806579cce"
		date = "2026-01-05"
		modified = "2026-01-06"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sinowal"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sinowal_auto.yar#L1-L118"
		license_url = "N/A"
		logic_hash = "54091d4d3127abdf4debf8514f31e0539d3fa9d766e80cf864467b06870782b4"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20260105"
		malpedia_hash = "19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79"
		malpedia_version = "20251219"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { ff15???????? 85c0 0f85b3000000 837df800 }
		$sequence_1 = { c7854cfdffff28000000 83bd4cfdffff03 7305 e9???????? 8b8d4cfdffff }
		$sequence_2 = { 8b45fc 83c001 8945fc 8b4d0c d1e9 394dfc }
		$sequence_3 = { 33d2 7596 837de800 7417 8b4508 8b08 }
		$sequence_4 = { 8995ecfeffff c785c4feffff00000000 c745fc00000000 c745f800000000 c685f0feffff00 68ff000000 6a00 }
		$sequence_5 = { 50 e8???????? 83c40c c745fc01000000 c745f804010000 8d4df8 }
		$sequence_6 = { 51 ff15???????? 33c0 eb03 83c8ff }
		$sequence_7 = { 52 ff15???????? c745f400000000 eb09 8b45f4 }
		$sequence_8 = { 7405 e9???????? 6830020000 6a00 }
		$sequence_9 = { 8b4dfc 0fb611 33d0 8b45fc 8810 8b4dfc }

	condition:
		7 of them and filesize < 73728
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ ff15???????? 85c0 0f85b3000000 837df800 }
$sequence_1hex{ c7854cfdffff28000000 83bd4cfdffff03 7305 e9???????? 8b8d4cfdffff }
$sequence_2hex{ 8b45fc 83c001 8945fc 8b4d0c d1e9 394dfc }
$sequence_3hex{ 33d2 7596 837de800 7417 8b4508 8b08 }
$sequence_4hex{ 8995ecfeffff c785c4feffff00000000 c745fc00000000 c745f800000000 c685f0feffff00 68ff000000 6a00 }
$sequence_5hex{ 50 e8???????? 83c40c c745fc01000000 c745f804010000 8d4df8 }
$sequence_6hex{ 51 ff15???????? 33c0 eb03 83c8ff }
$sequence_7hex{ 52 ff15???????? c745f400000000 eb09 8b45f4 }
$sequence_8hex{ 7405 e9???????? 6830020000 6a00 }
$sequence_9hex{ 8b4dfc 0fb611 33d0 8b45fc 8810 8b4dfc }

Condition

7 of them and filesize < 73728

In plain words (Heuristic)

  • The file must be smaller than 73728 (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: 1f893f7f-89f2-5c9f-9fc2-27e806579cce

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260105
malpedia_hash19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79
malpedia_version20251219
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE