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MALPEDIA_Win_Dlrat_Auto

autogenerated rule brought to you by yara-signator

MalwareDlratMalpedia 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: Dlrat.

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

Summary generated from the rule's metadata and condition.

Rule source

win-dlrat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Dlrat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "7bb91210-a1a6-58a8-9c5b-ff8edf88b110"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.dlrat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.dlrat_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "a3f1e1206cd1c309e34cacc09c3103fc944a2e61c558b93390de2cb1efae2fc5"
		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 = { 488d0de60b1600 e8???????? 488975b0 4989d9 4531c0 baaa020000 488d0dcb0b1600 }
		$sequence_1 = { 488d1df28e0500 48895dc8 48c745c011000000 488d55c0 488d0dcb8e0500 48894dd8 48c745d009000000 }
		$sequence_2 = { e8???????? 85c0 7818 3de4000000 7311 4898 488d0d723b0100 }
		$sequence_3 = { e8???????? 83fb01 7754 488d05aa270b00 488945a8 48c745a000000000 488d55a0 }
		$sequence_4 = { 48ffc0 482bd8 48899df0fcffff 488b9de8fcffff 4803d8 48899df8fcffff 488d0513701600 }
		$sequence_5 = { 488b8d20ffffff 4883ec20 e8???????? 4883c420 4889c2 488d0de71f1800 4883ec20 }
		$sequence_6 = { 41c64424076c 41c644240863 41c644240979 41c644240a39 41c644240b6f 41c644240c5a 41c644240d57 }
		$sequence_7 = { 488b03 488985a0fcffff 488995a8fcffff 488b3d???????? 488b97b0000000 488b87a8000000 488985b0fcffff }
		$sequence_8 = { e8???????? 48c745b000000000 4c8bce 4c8bc3 ba2f070000 488d0d5e411500 e8???????? }
		$sequence_9 = { ffc1 e8???????? 48894580 48895588 488d4580 48898520ffffff 488d1d6a691000 }

	condition:
		7 of them and filesize < 4121600
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 488d0de60b1600 e8???????? 488975b0 4989d9 4531c0 baaa020000 488d0dcb0b1600 }
$sequence_1hex{ 488d1df28e0500 48895dc8 48c745c011000000 488d55c0 488d0dcb8e0500 48894dd8 48c745d009000000 }
$sequence_2hex{ e8???????? 85c0 7818 3de4000000 7311 4898 488d0d723b0100 }
$sequence_3hex{ e8???????? 83fb01 7754 488d05aa270b00 488945a8 48c745a000000000 488d55a0 }
$sequence_4hex{ 48ffc0 482bd8 48899df0fcffff 488b9de8fcffff 4803d8 48899df8fcffff 488d0513701600 }
$sequence_5hex{ 488b8d20ffffff 4883ec20 e8???????? 4883c420 4889c2 488d0de71f1800 4883ec20 }
$sequence_6hex{ 41c64424076c 41c644240863 41c644240979 41c644240a39 41c644240b6f 41c644240c5a 41c644240d57 }
$sequence_7hex{ 488b03 488985a0fcffff 488995a8fcffff 488b3d???????? 488b97b0000000 488b87a8000000 488985b0fcffff }
$sequence_8hex{ e8???????? 48c745b000000000 4c8bce 4c8bc3 ba2f070000 488d0d5e411500 e8???????? }
$sequence_9hex{ ffc1 e8???????? 48894580 48895588 488d4580 48898520ffffff 488d1d6a691000 }

Condition

7 of them and filesize < 4121600

In plain words (Heuristic)

  • The file must be smaller than 4121600 (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: 7bb91210-a1a6-58a8-9c5b-ff8edf88b110

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