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MALPEDIA_Win_Remcom_Auto

autogenerated rule brought to you by yara-signator

MalwareRemcomMalpedia 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: Remcom.

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

Summary generated from the rule's metadata and condition.

Rule source

win-remcom-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Remcom_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "b84a5801-d1f4-541d-b920-cf3ad03c0258"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.remcom"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.remcom_auto.yar#L1-L118"
		license_url = "N/A"
		logic_hash = "61721121a39328b4af77849b64350fb63cb71d11024eb5238a5552f7f0ba7bd5"
		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 = { 895de8 c745ec32000000 33f6 885df4 885df5 }
		$sequence_1 = { 5b 8be5 5d c3 8b3d???????? 51 }
		$sequence_2 = { 85c0 75f2 e8???????? 8b0d???????? 51 ff15???????? 5e }
		$sequence_3 = { 50 e8???????? 8d8da0feffff 51 56 }
		$sequence_4 = { a3???????? 52 ff15???????? 85c0 7506 ff15???????? }
		$sequence_5 = { 8b0d???????? 51 ff15???????? 8b15???????? 33c0 }
		$sequence_6 = { 8d4310 8d8974eb4000 5a 668b31 }
		$sequence_7 = { ff15???????? 8b750c 8b7d08 814e2c00010000 83c8ff }
		$sequence_8 = { 51 6a08 8d95e0edffff 52 }
		$sequence_9 = { 83e01f c1f905 8b0c8de0fc4000 c1e006 03c1 f6400401 7524 }

	condition:
		7 of them and filesize < 155648
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 895de8 c745ec32000000 33f6 885df4 885df5 }
$sequence_1hex{ 5b 8be5 5d c3 8b3d???????? 51 }
$sequence_2hex{ 85c0 75f2 e8???????? 8b0d???????? 51 ff15???????? 5e }
$sequence_3hex{ 50 e8???????? 8d8da0feffff 51 56 }
$sequence_4hex{ a3???????? 52 ff15???????? 85c0 7506 ff15???????? }
$sequence_5hex{ 8b0d???????? 51 ff15???????? 8b15???????? 33c0 }
$sequence_6hex{ 8d4310 8d8974eb4000 5a 668b31 }
$sequence_7hex{ ff15???????? 8b750c 8b7d08 814e2c00010000 83c8ff }
$sequence_8hex{ 51 6a08 8d95e0edffff 52 }
$sequence_9hex{ 83e01f c1f905 8b0c8de0fc4000 c1e006 03c1 f6400401 7524 }

Condition

7 of them and filesize < 155648

In plain words (Heuristic)

  • The file must be smaller than 155648 (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: b84a5801-d1f4-541d-b920-cf3ad03c0258

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