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MALPEDIA_Win_Scavenger_Auto

autogenerated rule brought to you by yara-signator

MalwareScavengerMalpedia 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: Scavenger.

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

Summary generated from the rule's metadata and condition.

Rule source

win-scavenger-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Scavenger_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "d7bdaeb0-7116-5c13-ae8f-87dbc7dfff1b"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.scavenger"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.scavenger_auto.yar#L1-L118"
		license_url = "N/A"
		logic_hash = "91030dc6d1a65f35e56bdbbd23cb5dd4e96195557b8723c0aba6b4b022191693"
		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 = { 4889842480000000 488d442421 4889842488000000 0fb6442422 88442423 488b442450 }
		$sequence_1 = { 488b9424f8000000 488b8c24e8000000 e8???????? 90 }
		$sequence_2 = { 488bc1 0fb600 85c0 7413 }
		$sequence_3 = { 488b842450010000 488b4c2430 4803c8 488bc1 488b4c2438 0fb6542420 881401 }
		$sequence_4 = { 488908 488b442450 488b4c2428 488908 486b44247820 }
		$sequence_5 = { 4883ec28 488b442430 4889442408 488b442430 488378180f 760a }
		$sequence_6 = { 488bc1 48898424b8000000 488bbc24b8000000 488bb42448010000 488b8c2450010000 f3a4 }
		$sequence_7 = { 4889442450 488b442450 4c8bc0 488b542478 }
		$sequence_8 = { 488b4008 482bc1 48c1f805 4889442440 488b442440 }
		$sequence_9 = { 48c744243000000000 eb35 48817c242800100000 7211 488b4c2428 e8???????? 4889442430 }

	condition:
		7 of them and filesize < 2992128
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 4889842480000000 488d442421 4889842488000000 0fb6442422 88442423 488b442450 }
$sequence_1hex{ 488b9424f8000000 488b8c24e8000000 e8???????? 90 }
$sequence_2hex{ 488bc1 0fb600 85c0 7413 }
$sequence_3hex{ 488b842450010000 488b4c2430 4803c8 488bc1 488b4c2438 0fb6542420 881401 }
$sequence_4hex{ 488908 488b442450 488b4c2428 488908 486b44247820 }
$sequence_5hex{ 4883ec28 488b442430 4889442408 488b442430 488378180f 760a }
$sequence_6hex{ 488bc1 48898424b8000000 488bbc24b8000000 488bb42448010000 488b8c2450010000 f3a4 }
$sequence_7hex{ 4889442450 488b442450 4c8bc0 488b542478 }
$sequence_8hex{ 488b4008 482bc1 48c1f805 4889442440 488b442440 }
$sequence_9hex{ 48c744243000000000 eb35 48817c242800100000 7211 488b4c2428 e8???????? 4889442430 }

Condition

7 of them and filesize < 2992128

In plain words (Heuristic)

  • The file must be smaller than 2992128 (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: d7bdaeb0-7116-5c13-ae8f-87dbc7dfff1b

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