YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_APT_LNX_Academic_Camp_May20_Loader_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-loader-1.yarDetection Rule License 1.1

rule SIGNATURE_BASE_APT_LNX_Academic_Camp_May20_Loader_1 : FILE
{
	meta:
		description = "Detects malware used in attack on academic data centers"
		author = "Florian Roth (Nextron Systems)"
		id = "cda65abd-d918-5ee6-8f4a-554d47532d76"
		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#L20-L35"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		hash = "0efdd382872f0ff0866e5f68f0c66c01fcf4f9836a78ddaa5bbb349f20353897"
		logic_hash = "a73883f9fdf3d53694d9f9efec5f8f15994c5fd80c5f2a87b1741db6b954a023"
		score = 75
		quality = 85
		tags = "FILE"

	strings:
		$sc1 = { C6 45 F1 00 C6 45 F2 0A C6 45 F3 0A C6 45 F4 4A 
               C6 45 F5 04 C6 45 F6 06 C6 45 F7 1B C6 45 F8 01 }
		$sc2 = { 01 48 39 EB 75 EA 48 83 C4 08 5B 5D 41 5C 41 5D }

	condition:
		uint16( 0 ) == 0x457f and filesize < 10KB and all of them
}

Strings (2 patterns)

Identifier	Type	Value	Modifiers
$sc1	hex	{ C6 45 F1 00 C6 45 F2 0A C6 45 F3 0A C6 45 F4 4A C6 45 F5 04 C6 45 F6 06 C6 45 F7 1B C6 45 F8 01 }
$sc2	hex	{ 01 48 39 EB 75 EA 48 83 C4 08 5B 5D 41 5C 41 5D }

Condition

uint16( 0 ) == 0x457f and filesize < 10KB and all of them

In plain words (Heuristic)

The file must be smaller than 10KB (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).

0efdd382872f0ff0866e5f68f0c66c01fcf4f9836a78ddaa5bbb349f20353897

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: cda65abd-d918-5ee6-8f4a-554d47532d76

Tags:FILE

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