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MALPEDIA_Win_Emdivi_Auto

autogenerated rule brought to you by yara-signator

MalwareEmdiviMalpedia 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: Emdivi.

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

Summary generated from the rule's metadata and condition.

Rule source

win-emdivi-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Emdivi_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "0b250a38-8a48-5c38-8c97-641fef80d82d"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.emdivi"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.emdivi_auto.yar#L1-L119"
		license_url = "N/A"
		logic_hash = "f6e7363d6344c0f3090662aede939b2a7861d4f22a9013a66d4b159511f51ccf"
		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 = { 8d45f8 50 8d45d0 50 8955fc e8???????? }
		$sequence_1 = { 85c9 7405 394df8 7765 ff75f0 e8???????? }
		$sequence_2 = { e8???????? 83c40c eb02 33db 3bdf }
		$sequence_3 = { f7fe 8bc2 03c7 5f 5e }
		$sequence_4 = { 8a0401 3ac3 750a c68415b4fdffff2c eb07 }
		$sequence_5 = { 8bec 83ec18 53 56 57 8bf8 83ff01 }
		$sequence_6 = { f7fb 5b 6a07 03f8 8bc1 99 }
		$sequence_7 = { e8???????? eb1f 8bc6 e8???????? ff7508 }
		$sequence_8 = { 55 8bec 53 56 6a03 5b }
		$sequence_9 = { 8b749104 8bfb c1ef05 8bc6 }

	condition:
		7 of them and filesize < 581632
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8d45f8 50 8d45d0 50 8955fc e8???????? }
$sequence_1hex{ 85c9 7405 394df8 7765 ff75f0 e8???????? }
$sequence_2hex{ e8???????? 83c40c eb02 33db 3bdf }
$sequence_3hex{ f7fe 8bc2 03c7 5f 5e }
$sequence_4hex{ 8a0401 3ac3 750a c68415b4fdffff2c eb07 }
$sequence_5hex{ 8bec 83ec18 53 56 57 8bf8 83ff01 }
$sequence_6hex{ f7fb 5b 6a07 03f8 8bc1 99 }
$sequence_7hex{ e8???????? eb1f 8bc6 e8???????? ff7508 }
$sequence_8hex{ 55 8bec 53 56 6a03 5b }
$sequence_9hex{ 8b749104 8bfb c1ef05 8bc6 }

Condition

7 of them and filesize < 581632

In plain words (Heuristic)

  • The file must be smaller than 581632 (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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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: 0b250a38-8a48-5c38-8c97-641fef80d82d

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