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MALPEDIA_Win_Ramdo_Auto

autogenerated rule brought to you by yara-signator

MalwareRamdoMalpedia 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: Ramdo.

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

Summary generated from the rule's metadata and condition.

Rule source

win-ramdo-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ramdo_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "821106b8-bc4c-5bc5-966d-53c11374d99b"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ramdo"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ramdo_auto.yar#L1-L104"
		license_url = "N/A"
		logic_hash = "84d0d18c827e8f979b1dc908e8f3c43f305076e36c820030e03c36d7f9376b49"
		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 = { 687e1ca712 6a03 6a00 e8???????? }
		$sequence_1 = { 688fe57c18 6a03 6a00 e8???????? }
		$sequence_2 = { 68b900308a 6a01 6a00 e8???????? }
		$sequence_3 = { 685448005b 6a00 6a00 e8???????? }
		$sequence_4 = { 682c7206cb 6a00 6a00 e8???????? }
		$sequence_5 = { 68f53f0367 6a03 6a00 e8???????? }
		$sequence_6 = { 6805c7a481 6a00 6a00 e8???????? }
		$sequence_7 = { 68bb3d230a 6a05 6a00 e8???????? }
		$sequence_8 = { 68e9b528b6 6a03 6a00 e8???????? }
		$sequence_9 = { 685ce91101 6a03 6a00 e8???????? }

	condition:
		7 of them and filesize < 548864
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 687e1ca712 6a03 6a00 e8???????? }
$sequence_1hex{ 688fe57c18 6a03 6a00 e8???????? }
$sequence_2hex{ 68b900308a 6a01 6a00 e8???????? }
$sequence_3hex{ 685448005b 6a00 6a00 e8???????? }
$sequence_4hex{ 682c7206cb 6a00 6a00 e8???????? }
$sequence_5hex{ 68f53f0367 6a03 6a00 e8???????? }
$sequence_6hex{ 6805c7a481 6a00 6a00 e8???????? }
$sequence_7hex{ 68bb3d230a 6a05 6a00 e8???????? }
$sequence_8hex{ 68e9b528b6 6a03 6a00 e8???????? }
$sequence_9hex{ 685ce91101 6a03 6a00 e8???????? }

Condition

7 of them and filesize < 548864

In plain words (Heuristic)

  • The file must be smaller than 548864 (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: 821106b8-bc4c-5bc5-966d-53c11374d99b

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