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MALPEDIA_Win_Holerun_Auto

autogenerated rule brought to you by yara-signator

MalwareHolerunMalpedia 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: Holerun.

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

Summary generated from the rule's metadata and condition.

Rule source

win-holerun-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Holerun_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "6500cdb5-87da-5025-a7f6-75e98eb9bc04"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.holerun"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.holerun_auto.yar#L1-L121"
		license_url = "N/A"
		logic_hash = "3839d3ca1765d342b01a09c2ef96808892c400bfc6ae6a3566597677e96041c8"
		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 = { 4989c8 4889c2 b900000000 488b05???????? ffd0 eb19 }
		$sequence_1 = { 488d55ec 4889c1 488b05???????? ffd0 eb1c c745ec34120000 488b4570 }
		$sequence_2 = { 8905???????? 8b15???????? 488b85d8000000 895008 488b85d8000000 48c744242800000000 c744242000000000 }
		$sequence_3 = { 8b85cc030000 4881c458040000 5b 5d }
		$sequence_4 = { e8???????? 488d85b0010000 488d15a57c0000 4889542438 }
		$sequence_5 = { e8???????? 4889c2 488b45d0 8b400c }
		$sequence_6 = { e9???????? 8b85cc020000 4898 488b84c590000000 ba00000000 }
		$sequence_7 = { ffd0 eb1c c745ec34120000 488b4570 ba34120000 4889c1 488b05???????? }
		$sequence_8 = { 488b8de0020000 e8???????? 85c0 750a b800000000 e9???????? }
		$sequence_9 = { 4889c1 e8???????? 488d85b0010000 488d15a57c0000 4889542438 c744243000000000 c744242800010000 }

	condition:
		7 of them and filesize < 156672
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 4989c8 4889c2 b900000000 488b05???????? ffd0 eb19 }
$sequence_1hex{ 488d55ec 4889c1 488b05???????? ffd0 eb1c c745ec34120000 488b4570 }
$sequence_2hex{ 8905???????? 8b15???????? 488b85d8000000 895008 488b85d8000000 48c744242800000000 c744242000000000 }
$sequence_3hex{ 8b85cc030000 4881c458040000 5b 5d }
$sequence_4hex{ e8???????? 488d85b0010000 488d15a57c0000 4889542438 }
$sequence_5hex{ e8???????? 4889c2 488b45d0 8b400c }
$sequence_6hex{ e9???????? 8b85cc020000 4898 488b84c590000000 ba00000000 }
$sequence_7hex{ ffd0 eb1c c745ec34120000 488b4570 ba34120000 4889c1 488b05???????? }
$sequence_8hex{ 488b8de0020000 e8???????? 85c0 750a b800000000 e9???????? }
$sequence_9hex{ 4889c1 e8???????? 488d85b0010000 488d15a57c0000 4889542438 c744243000000000 c744242800010000 }

Condition

7 of them and filesize < 156672

In plain words (Heuristic)

  • The file must be smaller than 156672 (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: 6500cdb5-87da-5025-a7f6-75e98eb9bc04

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