YARA · Volexity threat-intel
VOLEXITY_Apt_Win_Powerstar_Lnk
Detects LNK command line used to install PowerStar.
- Author
- threatintel@volexity.com
- Date
- 2023-05-16
- Modified
- 2023-09-20
- Score / Quality
- 75 / 80
What this rule detects
Detects LNK command line used to install PowerStar.
It defines 4 patterns (4 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule VOLEXITY_Apt_Win_Powerstar_Lnk : CHARMINGKITTEN
{
meta:
= "Detects LNK command line used to install PowerStar."
= "threatintel@volexity.com"
= "33f16283-69b9-5109-b723-3ddc8abb8c41"
= "2023-05-16"
= "2023-09-20"
= "https://github.com/volexity/threat-intel"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2023/2023-06-28 POWERSTAR/indicators/rules.yar#L80-L97"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
= "da53aeaf69e80f697068779f4741b8c23cff82dd1bfb0640916a1bcc98c4892f"
= 75
= 80
= "CHARMINGKITTEN"
= 1
= "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
strings:
$p_1 = "-UseBasicParsing).Content; &(gcm i*x)$"
$c_1 = "powershecde43ell.ecde43exe"
$c_2 = "wgcde43eet -Ucde43eri"
$c_3 = "-UseBasicde43ecParsing).Contcde43eent; &(gcm i*x)$"
condition:
any of them
}
Strings (4 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $p_1 | text | "-UseBasicParsing).Content; &(gcm i*x)$" | |
| $c_1 | text | "powershecde43ell.ecde43exe" | |
| $c_2 | text | "wgcde43eet -Ucde43eri" | |
| $c_3 | text | "-UseBasicde43ecParsing).Contcde43eent; &(gcm i*x)$" |
Condition
any of themIn plain words (Heuristic)
- At least one pattern in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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.
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 33f16283-69b9-5109-b723-3ddc8abb8c41
Metadata
| memory_suitable | 1 |
|---|
Tags:CHARMINGKITTEN
Related rules
- APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-05-16
- APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-05-16
- APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-05-16
- APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2021-10-13
- APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-05-16
- APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-07-30
- APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-07-21
- APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-08-17