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YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_SUSP_LNX_SH_Cryptominer_Indicators_Dec20_1

Detects helper script used in a crypto miner campaign

Suspicious / huntingSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
Author
Florian Roth (Nextron Systems)
Date
2020-12-31
Modified
2023-12-05
Score / Quality
65 / 85

What this rule detects

Detects helper script used in a crypto miner campaign

It defines 4 patterns (4 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
susp-lnx-sh-cryptominer-indicators-dec20-1.yarDetection Rule License 1.1
rule SIGNATURE_BASE_SUSP_LNX_SH_Cryptominer_Indicators_Dec20_1 : FILE
{
	meta:
		description = "Detects helper script used in a crypto miner campaign"
		author = "Florian Roth (Nextron Systems)"
		id = "e376e0e1-1490-5ad4-8ca2-d28ca1c0b51a"
		date = "2020-12-31"
		modified = "2023-12-05"
		reference = "https://www.intezer.com/blog/research/new-golang-worm-drops-xmrig-miner-on-servers/"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/crime_crypto_miner.yar#L2-L17"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		hash = "3298dbd985c341d57e3219e80839ec5028585d0b0a737c994363443f4439d7a5"
		logic_hash = "4acd1b77307dbf23f95f7a2024209bee714c6931182aff16455ea6b7e4a6f287"
		score = 65
		quality = 85
		tags = "FILE"

	strings:
		$x1 = "miner running" fullword ascii
		$x2 = "miner runing" fullword ascii
		$x3 = " --donate-level 1 "
		$x4 = " -o pool.minexmr.com:5555 " ascii

	condition:
		filesize < 20KB and 1 of them
}

Strings (4 patterns)

IdentifierTypeValueModifiers
$x1text"miner running"fullword ascii
$x2text"miner runing"fullword ascii
$x3text" --donate-level 1 "
$x4text" -o pool.minexmr.com:5555 "ascii

Condition

filesize < 20KB and 1 of them

In plain words (Heuristic)

  • The file must be smaller than 20KB (a cheap guard that skips large files).
  • At least 1 patterns in the rule must match.

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References

Sample hashes

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

  • 3298dbd985c341d57e3219e80839ec5028585d0b0a737c994363443f4439d7a5

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: e376e0e1-1490-5ad4-8ca2-d28ca1c0b51a

Tags:FILE

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