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MALPEDIA_Win_Mebromi_Auto

autogenerated rule brought to you by yara-signator

MalwareMebromiMalpedia 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: Mebromi.

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

Summary generated from the rule's metadata and condition.

Rule source

win-mebromi-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Mebromi_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "3d64e85a-906f-5ddb-9f75-04eb426f7ebc"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.mebromi"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.mebromi_auto.yar#L1-L119"
		license_url = "N/A"
		logic_hash = "051f5b8119e90ef14be758def00ef62b697ce727969ed9523ac57414d0773faf"
		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 = { 5f eb26 8d4508 8db694702900 6a00 }
		$sequence_1 = { b82c2900d8 2c29 0000 2d29008a46 0323 }
		$sequence_2 = { 8bec 8b4508 ff348520712900 ff15???????? }
		$sequence_3 = { eb0f 0fb6d2 f68201a0290004 7403 }
		$sequence_4 = { 56 ffd7 3bdd 5b }
		$sequence_5 = { 68000000c0 68???????? ff15???????? 8b3d???????? 83f8ff a3???????? 7544 }
		$sequence_6 = { 58 c20c00 ff05???????? 833d????????01 55 56 57 }
		$sequence_7 = { 68???????? ff742410 ff15???????? 8bf0 85f6 7416 57 }
		$sequence_8 = { 8888009f2900 eb1f 83f861 7213 83f87a }
		$sequence_9 = { ff742410 ff15???????? 8bf0 85f6 7416 57 56 }

	condition:
		7 of them and filesize < 106496
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 5f eb26 8d4508 8db694702900 6a00 }
$sequence_1hex{ b82c2900d8 2c29 0000 2d29008a46 0323 }
$sequence_2hex{ 8bec 8b4508 ff348520712900 ff15???????? }
$sequence_3hex{ eb0f 0fb6d2 f68201a0290004 7403 }
$sequence_4hex{ 56 ffd7 3bdd 5b }
$sequence_5hex{ 68000000c0 68???????? ff15???????? 8b3d???????? 83f8ff a3???????? 7544 }
$sequence_6hex{ 58 c20c00 ff05???????? 833d????????01 55 56 57 }
$sequence_7hex{ 68???????? ff742410 ff15???????? 8bf0 85f6 7416 57 }
$sequence_8hex{ 8888009f2900 eb1f 83f861 7213 83f87a }
$sequence_9hex{ ff742410 ff15???????? 8bf0 85f6 7416 57 56 }

Condition

7 of them and filesize < 106496

In plain words (Heuristic)

  • The file must be smaller than 106496 (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.

Open in editor

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: 3d64e85a-906f-5ddb-9f75-04eb426f7ebc

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