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YARA · Volexity threat-intel

VOLEXITY_Apt_Win_Powerstar_Logmessage

Detects interesting log message embedded in memory only version of PowerStar.

APT / threat actorVolexity threat-intelBSD 2-Clause LicenseCompiles with YARA-X
Author
threatintel@volexity.com
Date
2023-05-16
Modified
2023-09-20
Score / Quality
75 / 80

What this rule detects

Detects interesting log message embedded in memory only version of PowerStar.

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

Summary generated from the rule's metadata and condition.

Rule source

apt-win-powerstar-logmessage.yarBSD 2-Clause License
rule VOLEXITY_Apt_Win_Powerstar_Logmessage : CHARMINGKITTEN
{
	meta:
		description = "Detects interesting log message embedded in memory only version of PowerStar."
		author = "threatintel@volexity.com"
		id = "5979c776-5138-50e2-adab-0793ad86ba76"
		date = "2023-05-16"
		modified = "2023-09-20"
		reference = "https://github.com/volexity/threat-intel"
		source_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2023/2023-06-28 POWERSTAR/indicators/rules.yar#L66-L79"
		license_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
		logic_hash = "539c9a8b3de24f2c8058d204900344756a8031822ebebc312612b8fb8422e341"
		score = 75
		quality = 80
		tags = "CHARMINGKITTEN"
		memory_suitable = 1
		license = "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"

	strings:
		$s_1 = "wau, ije ulineun mueos-eul halkkayo?"

	condition:
		all of them
}

Strings (1 patterns)

IdentifierTypeValueModifiers
$s_1text"wau, ije ulineun mueos-eul halkkayo?"

Condition

all of them

In plain words (Heuristic)

  • All patterns in the rule must match.

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References

Licence & attribution

Author: threatintel@volexity.com

Source repository: Volexity threat-intel @ 3a9d0b5245

Licence: BSD 2-Clause License (stated in the rule's own meta)

“See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt”

Copyright notice: Copyright 2022 by Volexity, Inc.

Original rule

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

Rule id: 5979c776-5138-50e2-adab-0793ad86ba76

Metadata

memory_suitable1

Tags:CHARMINGKITTEN