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MALPEDIA_Win_Transferloader_Auto

autogenerated rule brought to you by yara-signator

MalwareTransferloaderMalpedia 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: Transferloader.

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

Summary generated from the rule's metadata and condition.

Rule source

win-transferloader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Transferloader_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "6881fadd-235e-58e1-86ed-39c1ca8da641"
		date = "2026-01-05"
		modified = "2026-01-06"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.transferloader"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.transferloader_auto.yar#L1-L121"
		license_url = "N/A"
		logic_hash = "c6b3fd0089b61d2c316b9ea19bd98256a6361edd3a6f033006f4e490787182fc"
		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 = { 0fb609 880c02 e9???????? 48837c244800 7412 4c8b442448 33d2 }
		$sequence_1 = { 4889442438 41b810000000 488b542438 488b4c2430 }
		$sequence_2 = { 88440c20 b801000000 486bc002 b901000000 486bc901 }
		$sequence_3 = { 488d442424 48898424f8000000 488d442420 4889842400010000 }
		$sequence_4 = { b903000000 f3aa 48b8bce015361abafbff 48898424c8000000 c744242c00000000 486344242c }
		$sequence_5 = { 4889842498010000 488b842490010000 4889842468010000 c6442440eb c644244108 c644244248 c644244389 }
		$sequence_6 = { 488b09 4863493c 480308 488bc1 4889442430 488b442430 }
		$sequence_7 = { 4889542410 48894c2408 4881eca8000000 c6442420eb c644242108 }
		$sequence_8 = { 488b442420 4889442428 488b442428 0fb700 3d4d5a0000 7404 32c0 }
		$sequence_9 = { 488b8c2420010000 ff15???????? 4883bc24e000000000 7418 4c8b8424e0000000 33d2 }

	condition:
		7 of them and filesize < 216064
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 0fb609 880c02 e9???????? 48837c244800 7412 4c8b442448 33d2 }
$sequence_1hex{ 4889442438 41b810000000 488b542438 488b4c2430 }
$sequence_2hex{ 88440c20 b801000000 486bc002 b901000000 486bc901 }
$sequence_3hex{ 488d442424 48898424f8000000 488d442420 4889842400010000 }
$sequence_4hex{ b903000000 f3aa 48b8bce015361abafbff 48898424c8000000 c744242c00000000 486344242c }
$sequence_5hex{ 4889842498010000 488b842490010000 4889842468010000 c6442440eb c644244108 c644244248 c644244389 }
$sequence_6hex{ 488b09 4863493c 480308 488bc1 4889442430 488b442430 }
$sequence_7hex{ 4889542410 48894c2408 4881eca8000000 c6442420eb c644242108 }
$sequence_8hex{ 488b442420 4889442428 488b442428 0fb700 3d4d5a0000 7404 32c0 }
$sequence_9hex{ 488b8c2420010000 ff15???????? 4883bc24e000000000 7418 4c8b8424e0000000 33d2 }

Condition

7 of them and filesize < 216064

In plain words (Heuristic)

  • The file must be smaller than 216064 (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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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: 6881fadd-235e-58e1-86ed-39c1ca8da641

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