Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Hacksfase_Auto

autogenerated rule brought to you by yara-signator

MalwareHacksfaseMalpedia 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: Hacksfase.

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

Summary generated from the rule's metadata and condition.

Rule source

win-hacksfase-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Hacksfase_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c3914b01-a5ad-5c7f-a735-7dcc2ab34591"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.hacksfase"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.hacksfase_auto.yar#L1-L127"
		license_url = "N/A"
		logic_hash = "c0e0ff5e2fc92b0c1528abf2f97b13e72f28cf3013e9ec1c6c3c66dabce1d837"
		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 = { f7d1 83c108 898da4dfffff b9???????? }
		$sequence_1 = { c744241c44000000 89742420 89742428 89742424 89742438 89742434 89742430 }
		$sequence_2 = { 8d450b 83ec10 8bcc 8965ec 50 68???????? ff15???????? }
		$sequence_3 = { ff75d8 8b35???????? ffd6 8945e0 8b45d0 03c0 50 }
		$sequence_4 = { 85f6 742e b9???????? c745fc00000000 e8???????? 8b0d???????? 8d95ecdfffff }
		$sequence_5 = { 5f 5e 81c434010000 c3 e8???????? 5f }
		$sequence_6 = { 750e 395dfc 7409 ff75fc ff15???????? }
		$sequence_7 = { 6a00 83c660 6a00 56 6a00 ff15???????? }
		$sequence_8 = { e8???????? 83c404 56 57 b940000000 33c0 8d7c2439 }
		$sequence_9 = { 68???????? ff15???????? 8b4dec e8???????? eb02 33c0 834dfcff }

	condition:
		7 of them and filesize < 106496
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ f7d1 83c108 898da4dfffff b9???????? }
$sequence_1hex{ c744241c44000000 89742420 89742428 89742424 89742438 89742434 89742430 }
$sequence_2hex{ 8d450b 83ec10 8bcc 8965ec 50 68???????? ff15???????? }
$sequence_3hex{ ff75d8 8b35???????? ffd6 8945e0 8b45d0 03c0 50 }
$sequence_4hex{ 85f6 742e b9???????? c745fc00000000 e8???????? 8b0d???????? 8d95ecdfffff }
$sequence_5hex{ 5f 5e 81c434010000 c3 e8???????? 5f }
$sequence_6hex{ 750e 395dfc 7409 ff75fc ff15???????? }
$sequence_7hex{ 6a00 83c660 6a00 56 6a00 ff15???????? }
$sequence_8hex{ e8???????? 83c404 56 57 b940000000 33c0 8d7c2439 }
$sequence_9hex{ 68???????? ff15???????? 8b4dec e8???????? eb02 33c0 834dfcff }

Condition

7 of them and filesize < 106496

In plain words (Heuristic)

  • The file must be smaller than 106496 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

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: c3914b01-a5ad-5c7f-a735-7dcc2ab34591

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