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MALPEDIA_Win_Woolger_Auto

autogenerated rule brought to you by yara-signator

MalwareWoolgerMalpedia 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: Woolger.

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

Summary generated from the rule's metadata and condition.

Rule source

win-woolger-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Woolger_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "69dafade-30c5-5734-830c-150b438e6d59"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.woolger"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.woolger_auto.yar#L1-L121"
		license_url = "N/A"
		logic_hash = "a68ced9b21a66c947cc315eb8f76a9ad3604356e88ce1c4ffa9af9c48a2ada10"
		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 = { 46 8b5510 52 6a00 ff15???????? }
		$sequence_1 = { ff15???????? 6800040000 8bf0 e8???????? 83c404 }
		$sequence_2 = { 0f84e6000000 3da5000000 0f84db000000 83f85b 0f84cb000000 }
		$sequence_3 = { 8b07 83f808 750a be???????? e9???????? }
		$sequence_4 = { e9???????? 83f80d 750a be???????? e9???????? 83f814 }
		$sequence_5 = { 750a be???????? e9???????? 83f828 750a be???????? }
		$sequence_6 = { 0f848e000000 56 57 b980000000 8db5fcfdffff bf???????? }
		$sequence_7 = { 57 0fb7d6 6a02 52 ff15???????? }
		$sequence_8 = { be???????? e9???????? 83f809 750a be???????? e9???????? 83f80a }
		$sequence_9 = { 83f828 750a be???????? e9???????? 83f82c 750a be???????? }

	condition:
		7 of them and filesize < 196608
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 46 8b5510 52 6a00 ff15???????? }
$sequence_1hex{ ff15???????? 6800040000 8bf0 e8???????? 83c404 }
$sequence_2hex{ 0f84e6000000 3da5000000 0f84db000000 83f85b 0f84cb000000 }
$sequence_3hex{ 8b07 83f808 750a be???????? e9???????? }
$sequence_4hex{ e9???????? 83f80d 750a be???????? e9???????? 83f814 }
$sequence_5hex{ 750a be???????? e9???????? 83f828 750a be???????? }
$sequence_6hex{ 0f848e000000 56 57 b980000000 8db5fcfdffff bf???????? }
$sequence_7hex{ 57 0fb7d6 6a02 52 ff15???????? }
$sequence_8hex{ be???????? e9???????? 83f809 750a be???????? e9???????? 83f80a }
$sequence_9hex{ 83f828 750a be???????? e9???????? 83f82c 750a be???????? }

Condition

7 of them and filesize < 196608

In plain words (Heuristic)

  • The file must be smaller than 196608 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

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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: 69dafade-30c5-5734-830c-150b438e6d59

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