YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_APT_LNX_Academic_Camp_May20_Eraser_1

Detects malware used in attack on academic data centers

APT / threat actorSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X

Author: Florian Roth (Nextron Systems)
Date: 2020-05-16
Modified: 2023-12-05
Score / Quality: 75 / 85

What this rule detects

Detects malware used in attack on academic data centers

It defines 2 patterns (0 text, 2 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

apt-lnx-academic-camp-may20-eraser-1.yarDetection Rule License 1.1

rule SIGNATURE_BASE_APT_LNX_Academic_Camp_May20_Eraser_1 : FILE
{
	meta:
		description = "Detects malware used in attack on academic data centers"
		author = "Florian Roth (Nextron Systems)"
		id = "36d17887-9844-5fa4-8a0d-89cc41b2d876"
		date = "2020-05-16"
		modified = "2023-12-05"
		reference = "https://csirt.egi.eu/academic-data-centers-abused-for-crypto-currency-mining/"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/crime_academic_data_centers_camp_may20.yar#L1-L18"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		hash = "552245645cc49087dfbc827d069fa678626b946f4b71cb35fa4a49becd971363"
		logic_hash = "9a0410e86fa8fb8b599e5b8a6508d6889eb6e26600f0ecf222561ac4a169676d"
		score = 75
		quality = 85
		tags = "FILE"

	strings:
		$sc2 = { E6 FF FF 48 89 45 D0 8B 45 E0 BA 00 00 00 00 BE
               00 00 00 00 89 C7 E8 }
		$sc3 = { E6 FF FF 89 45 DC 8B 45 DC 83 C0 01 48 98 BE 01
               00 00 00 48 89 C7 E8 }

	condition:
		uint16( 0 ) == 0x457f and filesize < 60KB and all of them
}

Strings (2 patterns)

Identifier	Type	Value	Modifiers
$sc2	hex	{ E6 FF FF 48 89 45 D0 8B 45 E0 BA 00 00 00 00 BE 00 00 00 00 89 C7 E8 }
$sc3	hex	{ E6 FF FF 89 45 DC 8B 45 DC 83 C0 01 48 98 BE 01 00 00 00 48 89 C7 E8 }

Condition

uint16( 0 ) == 0x457f and filesize < 60KB and all of them

In plain words (Heuristic)

The file must be smaller than 60KB (a cheap guard that skips large files).
All patterns in the rule must match.

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References

https://csirt.egi.eu/academic-data-centers-abused-for-crypto-currency-mining/

Sample hashes

Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).

552245645cc49087dfbc827d069fa678626b946f4b71cb35fa4a49becd971363

Licence & attribution

Author: Florian Roth (Nextron Systems)

Source repository: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 36d17887-9844-5fa4-8a0d-89cc41b2d876

Tags:FILE

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