YARA · SEKOIA.IO Community
SEKOIA_Apt_Turla_Kazuar_Variant_2023
New variant of Kazuar observed in 2023
- Author
- Sekoia.io
- Date
- 2023-11-03
- Modified
- 2024-12-19
- Score / Quality
- 75 / 80
What this rule detects
New variant of Kazuar observed in 2023
Associated malware family: Kazuar.
Targets: Windows PE.
It defines 3 patterns (3 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
apt-turla-kazuar-variant-2023.yarDetection Rule License 1.1
rule SEKOIA_Apt_Turla_Kazuar_Variant_2023 : FILE
{
meta:
= "New variant of Kazuar observed in 2023"
= "Sekoia.io"
= "51e9de6a-5d8a-4627-8063-b70f78e78726"
= "2023-11-03"
= "2024-12-19"
= "https://github.com/SEKOIA-IO/Community"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_turla_kazuar_variant_2023.yar#L1-L17"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
= "98207fef906c922ff09f72b0dea7103c0fb86c5ec4712a23ecba6840b79b0ad5"
= 75
= 80
= "FILE"
= "1.0"
= "TLP:CLEAR"
strings:
$s1 = "Started from file '" ascii wide
$s2 = "Zombifying user's" ascii wide
$s3 = "Result #{0:X16} already exists in {1}" ascii wide
condition:
uint16( 0 ) == 0x5a4d and 2 of them
}
Strings (3 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s1 | text | "Started from file '" | ascii wide |
| $s2 | text | "Zombifying user's" | ascii wide |
| $s3 | text | "Result #{0:X16} already exists in {1}" | ascii wide |
Condition
uint16( 0 ) == 0x5a4d and 2 of themIn plain words (Heuristic)
- The file must start with “MZ” — a Windows executable (PE).
- At least 2 patterns in the rule must match.
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References
Licence & attribution
Author: Sekoia.io
Source repository: SEKOIA.IO Community @ a438a5901a
Licence: Detection Rule License 1.1 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 51e9de6a-5d8a-4627-8063-b70f78e78726
Metadata
| version | 1.0 |
|---|---|
| classification | TLP:CLEAR |
Tags:FILE
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