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MALPEDIA_Win_Wininetloader_Auto

autogenerated rule brought to you by yara-signator

MalwareWininetloaderMalpedia 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: Wininetloader.

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

Summary generated from the rule's metadata and condition.

Rule source

win-wininetloader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Wininetloader_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "a3abc831-3617-5eb4-be31-efdfe45c48fa"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.wininetloader"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.wininetloader_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "86fa7c92cd506c06fe8c95af003b4c9146bc66cb0172f256cc2267584d86db42"
		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 = { 410fb6de ff15???????? 488bc8 8bd3 ff15???????? 488bcf 488b5c2450 }
		$sequence_1 = { e8???????? ffc3 83fb0a 0f8ef8feffff 418bde 83f301 8d145d7c230000 }
		$sequence_2 = { 4d8bf0 eb0b 4c8d3410 4d3bf0 4d0f42f0 4c89742428 498bd6 }
		$sequence_3 = { 771c 4883f901 745b 48ffc9 4883c002 410fb71402 440fb700 }
		$sequence_4 = { 4c8b7537 488b751f 0f1000 0f114597 0f104810 0f114da7 4c897810 }
		$sequence_5 = { e9???????? 488d0d84870400 e9???????? 488d0da8830400 4881c1a8030000 e9???????? 488d0dad870400 }
		$sequence_6 = { 807c243000 741f 48897580 4c8bc3 488bd7 488d8d78010000 e8???????? }
		$sequence_7 = { 7479 4c8d5238 33c9 0f1f8000000000 33c0 488d5260 4d8d5260 }
		$sequence_8 = { 4c8b642450 8b742434 488b4c2448 807c0c6c20 7512 400fb6f6 84db }
		$sequence_9 = { 83e3fb 488d4d98 e8???????? 90 f6c302 740d 83e3fd }

	condition:
		7 of them and filesize < 2659328
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 410fb6de ff15???????? 488bc8 8bd3 ff15???????? 488bcf 488b5c2450 }
$sequence_1hex{ e8???????? ffc3 83fb0a 0f8ef8feffff 418bde 83f301 8d145d7c230000 }
$sequence_2hex{ 4d8bf0 eb0b 4c8d3410 4d3bf0 4d0f42f0 4c89742428 498bd6 }
$sequence_3hex{ 771c 4883f901 745b 48ffc9 4883c002 410fb71402 440fb700 }
$sequence_4hex{ 4c8b7537 488b751f 0f1000 0f114597 0f104810 0f114da7 4c897810 }
$sequence_5hex{ e9???????? 488d0d84870400 e9???????? 488d0da8830400 4881c1a8030000 e9???????? 488d0dad870400 }
$sequence_6hex{ 807c243000 741f 48897580 4c8bc3 488bd7 488d8d78010000 e8???????? }
$sequence_7hex{ 7479 4c8d5238 33c9 0f1f8000000000 33c0 488d5260 4d8d5260 }
$sequence_8hex{ 4c8b642450 8b742434 488b4c2448 807c0c6c20 7512 400fb6f6 84db }
$sequence_9hex{ 83e3fb 488d4d98 e8???????? 90 f6c302 740d 83e3fd }

Condition

7 of them and filesize < 2659328

In plain words (Heuristic)

  • The file must be smaller than 2659328 (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: a3abc831-3617-5eb4-be31-efdfe45c48fa

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