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MALPEDIA_Win_Hackbrowserdata_Auto

autogenerated rule brought to you by yara-signator

MalwareHackbrowserdataMalpedia 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: Hackbrowserdata.

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

Summary generated from the rule's metadata and condition.

Rule source

win-hackbrowserdata-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Hackbrowserdata_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "92ddeb6c-72b7-57ff-b845-90680cf5da41"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.hackbrowserdata"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.hackbrowserdata_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "3b3248f3d8d67a60a4cecec0e33cdc9a43a8ea275592fdb43271cadfd1931f98"
		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 = { eb2f 488b842478010000 4c89c1 bf01000000 488d358dda9e00 e8???????? 488b942490010000 }
		$sequence_1 = { eb9f 4889f0 4c89c1 e8???????? 0f1f00 e8???????? 4889d9 }
		$sequence_2 = { eb51 488b9c2490010000 488b842488050000 4c89e2 4d89fc 4589cf 4488542447 }
		$sequence_3 = { ff02 488b942440010000 418d5f01 8b12 4c8bbc24d8020000 4d85ff 0f854b020000 }
		$sequence_4 = { ffd1 488b4c2438 48895928 833d????????00 7410 e8???????? 498903 }
		$sequence_5 = { f20f1100 eb08 488b8c24a0000000 4889c8 488b5c2460 8b7c2440 4c8b442448 }
		$sequence_6 = { f20f11442468 4c89842490000000 498b02 4889cb e8???????? 488b4c2440 488b942430010000 }
		$sequence_7 = { eb80 895628 4889da 837a2802 7f64 488b5220 488db3b8020000 }
		$sequence_8 = { ffd6 488b942468010000 48891a 833d????????00 7410 e8???????? 49890b }
		$sequence_9 = { e8???????? 498903 4c8b44daf8 4d894308 ebad 48895c2440 4889542468 }

	condition:
		7 of them and filesize < 42451968
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ eb2f 488b842478010000 4c89c1 bf01000000 488d358dda9e00 e8???????? 488b942490010000 }
$sequence_1hex{ eb9f 4889f0 4c89c1 e8???????? 0f1f00 e8???????? 4889d9 }
$sequence_2hex{ eb51 488b9c2490010000 488b842488050000 4c89e2 4d89fc 4589cf 4488542447 }
$sequence_3hex{ ff02 488b942440010000 418d5f01 8b12 4c8bbc24d8020000 4d85ff 0f854b020000 }
$sequence_4hex{ ffd1 488b4c2438 48895928 833d????????00 7410 e8???????? 498903 }
$sequence_5hex{ f20f1100 eb08 488b8c24a0000000 4889c8 488b5c2460 8b7c2440 4c8b442448 }
$sequence_6hex{ f20f11442468 4c89842490000000 498b02 4889cb e8???????? 488b4c2440 488b942430010000 }
$sequence_7hex{ eb80 895628 4889da 837a2802 7f64 488b5220 488db3b8020000 }
$sequence_8hex{ ffd6 488b942468010000 48891a 833d????????00 7410 e8???????? 49890b }
$sequence_9hex{ e8???????? 498903 4c8b44daf8 4d894308 ebad 48895c2440 4889542468 }

Condition

7 of them and filesize < 42451968

In plain words (Heuristic)

  • The file must be smaller than 42451968 (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: 92ddeb6c-72b7-57ff-b845-90680cf5da41

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