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YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_APT_MAL_Sandworm_Exaramel_Configuration_File_Plaintext

Detects contents of the configuration file used by Exaramel (plaintext)

APT / threat actorExaramelSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
Author
FR/ANSSI/SDO
Date
2021-02-15
Modified
2024-05-25
Score / Quality
80 / 85

What this rule detects

Detects contents of the configuration file used by Exaramel (plaintext)

Associated malware family: Exaramel.

It defines 1 patterns (0 text, 0 hex, 1 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
apt-mal-sandworm-exaramel-configuration-file-plaintext.yarDetection Rule License 1.1
rule SIGNATURE_BASE_APT_MAL_Sandworm_Exaramel_Configuration_File_Plaintext
{
	meta:
		description = "Detects contents of the configuration file used by Exaramel (plaintext)"
		author = "FR/ANSSI/SDO"
		id = "6f0d834b-e6c8-59e6-bf9a-b4fd9c0b2297"
		date = "2021-02-15"
		modified = "2024-05-25"
		reference = "https://www.cert.ssi.gouv.fr/uploads/CERTFR-2021-CTI-005.pdf"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/apt_sandworm_centreon.yar#L106-L118"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		logic_hash = "536327d5216372a3fd2f4dad0a21be2778ce2930212daf0a8628ecbdab49b46e"
		score = 80
		quality = 85
		tags = ""

	strings:
		$ = /\{"Hosts":\[".{10,512}"\],"Proxy":".{0,512}","Version":".{1,32}","Guid":"/

	condition:
		all of them
}

Strings (1 patterns)

IdentifierTypeValueModifiers
$regex/\{"Hosts":\[".{10,512}"\],"Proxy":".{0,512}","Version":".{1,32}","Guid":"/

Condition

all of them

In plain words (Heuristic)

  • All patterns in the rule must match.

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References

Licence & attribution

Author: FR/ANSSI/SDO

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: 6f0d834b-e6c8-59e6-bf9a-b4fd9c0b2297

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