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MALPEDIA_Win_Simplefilemover_Auto

autogenerated rule brought to you by yara-signator

MalwareSimplefilemoverMalpedia 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 / 73

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Simplefilemover.

It defines 22 patterns (0 text, 22 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-simplefilemover-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Simplefilemover_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "fe7f1173-936a-59a5-be67-c1759f3eaafe"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.simplefilemover"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.simplefilemover_auto.yar#L1-L219"
		license_url = "N/A"
		logic_hash = "e98482deeb7c570cb88ff9037be4fb890cd449b80eb64a7d927279cdad8d5053"
		score = 75
		quality = 73
		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 = { 8bfc f3a5 e8???????? 81c420020000 }
		$sequence_1 = { 33c0 e9???????? 6820020000 ff15???????? }
		$sequence_2 = { 81c420020000 85c0 7407 68???????? eb05 68???????? }
		$sequence_3 = { b988000000 8bf3 8bfc f3a5 }
		$sequence_4 = { 7908 4b 81cb00ffffff 43 885c242c 8a5c241c 8b74242c }
		$sequence_5 = { 6a00 8b8504daffff 50 ff15???????? 898510daffff 6a00 }
		$sequence_6 = { e8???????? 8d85a4ddffff 57 50 8d45f8 }
		$sequence_7 = { 7518 6a00 6a00 8d8554daffff 50 8b8d04daffff }
		$sequence_8 = { 8b742410 57 56 50 51 }
		$sequence_9 = { 6a00 6a00 8d8d28daffff 51 }
		$sequence_10 = { 6685c0 7433 8bcb 663d5c00 }
		$sequence_11 = { 8bfa 46 668b4102 83c102 42 6685c0 75ea }
		$sequence_12 = { 6a00 ffd7 ff7508 8d4302 50 ff15???????? ff7604 }
		$sequence_13 = { 8b7c2418 8b5c2428 47 897c2418 0fbfff 3bfb 0f8c54ffffff }
		$sequence_14 = { 8d8d00ffffff 51 e8???????? 83c404 50 }
		$sequence_15 = { bf00010000 99 f7ff 0fb6c2 8945f0 }
		$sequence_16 = { 8a4c242c 5d 5b 5f 889000010000 888801010000 }
		$sequence_17 = { 85f6 7417 8b4c2414 8d447b02 50 }
		$sequence_18 = { 888801010000 5e 83c410 c3 5f 888800010000 }
		$sequence_19 = { 83c404 c78508daffff00000000 e9???????? 6a00 }
		$sequence_20 = { 6a10 50 ff75fc ffd6 83f8ff 7558 ff15???????? }
		$sequence_21 = { 6a01 6a00 8b8508daffff 2b85fcd9ffff 50 }

	condition:
		7 of them and filesize < 57344
}

Strings (22 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8bfc f3a5 e8???????? 81c420020000 }
$sequence_1hex{ 33c0 e9???????? 6820020000 ff15???????? }
$sequence_2hex{ 81c420020000 85c0 7407 68???????? eb05 68???????? }
$sequence_3hex{ b988000000 8bf3 8bfc f3a5 }
$sequence_4hex{ 7908 4b 81cb00ffffff 43 885c242c 8a5c241c 8b74242c }
$sequence_5hex{ 6a00 8b8504daffff 50 ff15???????? 898510daffff 6a00 }
$sequence_6hex{ e8???????? 8d85a4ddffff 57 50 8d45f8 }
$sequence_7hex{ 7518 6a00 6a00 8d8554daffff 50 8b8d04daffff }
$sequence_8hex{ 8b742410 57 56 50 51 }
$sequence_9hex{ 6a00 6a00 8d8d28daffff 51 }
$sequence_10hex{ 6685c0 7433 8bcb 663d5c00 }
$sequence_11hex{ 8bfa 46 668b4102 83c102 42 6685c0 75ea }
$sequence_12hex{ 6a00 ffd7 ff7508 8d4302 50 ff15???????? ff7604 }
$sequence_13hex{ 8b7c2418 8b5c2428 47 897c2418 0fbfff 3bfb 0f8c54ffffff }
$sequence_14hex{ 8d8d00ffffff 51 e8???????? 83c404 50 }
$sequence_15hex{ bf00010000 99 f7ff 0fb6c2 8945f0 }
$sequence_16hex{ 8a4c242c 5d 5b 5f 889000010000 888801010000 }
$sequence_17hex{ 85f6 7417 8b4c2414 8d447b02 50 }
$sequence_18hex{ 888801010000 5e 83c410 c3 5f 888800010000 }
$sequence_19hex{ 83c404 c78508daffff00000000 e9???????? 6a00 }
$sequence_20hex{ 6a10 50 ff75fc ffd6 83f8ff 7558 ff15???????? }
$sequence_21hex{ 6a01 6a00 8b8508daffff 2b85fcd9ffff 50 }

Condition

7 of them and filesize < 57344

In plain words (Heuristic)

  • The file must be smaller than 57344 (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: fe7f1173-936a-59a5-be67-c1759f3eaafe

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