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MALPEDIA_Win_Ssload_Auto

autogenerated rule brought to you by yara-signator

MalwareSsloadMalpedia 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: Ssload.

It defines 19 patterns (0 text, 19 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-ssload-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ssload_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "6a7f874c-6610-5162-ba91-1cc1181f5dd9"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ssload"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ssload_auto.yar#L1-L183"
		license_url = "N/A"
		logic_hash = "ad4eafdd7db8d5909c1f0b5f12cdb3737a7d865694dd047c95a4d7271fb85450"
		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 = { f7e1 c1ea03 8d0492 8d0442 }
		$sequence_1 = { 01de 89770c e9???????? 8b770c }
		$sequence_2 = { 85f6 b8ffffffff 0f48f8 81ff01020000 }
		$sequence_3 = { 894dd4 51 8945e0 ff10 83c404 }
		$sequence_4 = { c745d002000000 648b0d00000000 894de8 64a300000000 }
		$sequence_5 = { 8d442408 89e1 ba???????? 68???????? 50 e8???????? }
		$sequence_6 = { 8d4ddc a1???????? 6a00 6a00 68000000c0 }
		$sequence_7 = { 83ec0c 8db53cffffff 8baeb0000000 8b4608 }
		$sequence_8 = { 89d5 57 53 52 e8???????? }
		$sequence_9 = { 8b4f18 0f94c0 83c802 50 }
		$sequence_10 = { 55 83ec10 83c50c 837dd800 }
		$sequence_11 = { 034214 50 8b4df8 51 e8???????? }
		$sequence_12 = { 034228 8945c4 6a00 6a01 6800000010 }
		$sequence_13 = { 0345e8 2b45d4 8945dc e9???????? }
		$sequence_14 = { 034828 8b55fc 894a2c eb0a }
		$sequence_15 = { 034a10 894de0 8b45e0 3b45dc 7606 8b4de0 894ddc }
		$sequence_16 = { ffd1 83c408 ebbc 8b55fc 8b4208 50 e8???????? }
		$sequence_17 = { 03420c 50 ff15???????? 8945f8 837df800 }
		$sequence_18 = { 034110 50 8b550c 52 8b4de8 e8???????? }

	condition:
		7 of them and filesize < 4950016
}

Strings (19 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ f7e1 c1ea03 8d0492 8d0442 }
$sequence_1hex{ 01de 89770c e9???????? 8b770c }
$sequence_2hex{ 85f6 b8ffffffff 0f48f8 81ff01020000 }
$sequence_3hex{ 894dd4 51 8945e0 ff10 83c404 }
$sequence_4hex{ c745d002000000 648b0d00000000 894de8 64a300000000 }
$sequence_5hex{ 8d442408 89e1 ba???????? 68???????? 50 e8???????? }
$sequence_6hex{ 8d4ddc a1???????? 6a00 6a00 68000000c0 }
$sequence_7hex{ 83ec0c 8db53cffffff 8baeb0000000 8b4608 }
$sequence_8hex{ 89d5 57 53 52 e8???????? }
$sequence_9hex{ 8b4f18 0f94c0 83c802 50 }
$sequence_10hex{ 55 83ec10 83c50c 837dd800 }
$sequence_11hex{ 034214 50 8b4df8 51 e8???????? }
$sequence_12hex{ 034228 8945c4 6a00 6a01 6800000010 }
$sequence_13hex{ 0345e8 2b45d4 8945dc e9???????? }
$sequence_14hex{ 034828 8b55fc 894a2c eb0a }
$sequence_15hex{ 034a10 894de0 8b45e0 3b45dc 7606 8b4de0 894ddc }
$sequence_16hex{ ffd1 83c408 ebbc 8b55fc 8b4208 50 e8???????? }
$sequence_17hex{ 03420c 50 ff15???????? 8945f8 837df800 }
$sequence_18hex{ 034110 50 8b550c 52 8b4de8 e8???????? }

Condition

7 of them and filesize < 4950016

In plain words (Heuristic)

  • The file must be smaller than 4950016 (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: 6a7f874c-6610-5162-ba91-1cc1181f5dd9

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