YARA · SEKOIA.IO Community
SEKOIA_Loader_Win_Ninerat
Detect the NineRAT instrumentator
- Author
- Sekoia.io
- Date
- 2023-12-12
- Modified
- 2024-12-19
- Score / Quality
- 75 / 80
What this rule detects
Detect the NineRAT instrumentator
Associated malware family: Ninerat.
Targets: Windows PE.
It defines 2 patterns (2 text, 0 hex, 0 regex). YARA modules used: pe, hash.
YARA-X says: warning[deprecated_field]: field `number_of_sections` is deprecated
Summary generated from the rule's metadata and condition.
Rule source
Includes the imports needed to compile it on its own.
import "pe"
import "hash"
rule SEKOIA_Loader_Win_Ninerat
{
meta:
= "Detect the NineRAT instrumentator"
= "Sekoia.io"
= "b9aa3ddc-7892-402f-b045-182884ee9bad"
= "2023-12-12"
= "2024-12-19"
= "https://blog.talosintelligence.com/lazarus_new_rats_dlang_and_telegram/"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/loader_win_ninerat.yar#L4-L37"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
= "ba8cd92cc059232203bcadee260ddbae273fc4c89b18424974955607476982c4"
= "5b02fc3cfb5d74c09cab724b5b54c53a7c07e5766bffe5b1adf782c9e86a8541"
= "eab81277a2ffe926c2d9f990ee2e36f0e5f27a14d3048c50d31952d90ce7ab0b"
= 75
= 80
= ""
= "1.0"
= "TLP:CLEAR"
strings:
$ = "TelegramRat\\lastest\\Dropper"
$ = "\\Release\\ServiceMid.pdb"
condition:
all of them or pe.imphash ( ) == "104a3dc970a385f64de39e0dad61a9a2" or hash.md5 ( pe.rich_signature.clear_data ) == "aab0aa6b89d883e42be8b65a4e41a139" or for any i in ( 0 .. pe.number_of_sections -1 ) : ( hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "827d5fd4b1a0426037529ee9bba48da0" or hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "82354f92508dcb33acda01c226de2975" or hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "ccd0f5d837a6cc05a861f040cbdfe080" or hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "8d2c169356afe8b53b0ecb83de3084b9" )
}
Strings (2 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $ | text | "TelegramRat\\lastest\\Dropper" | |
| $ | text | "\\Release\\ServiceMid.pdb" |
Condition
all of them or pe.imphash ( ) == "104a3dc970a385f64de39e0dad61a9a2" or hash.md5 ( pe.rich_signature.clear_data ) == "aab0aa6b89d883e42be8b65a4e41a139" or for any i in ( 0 .. pe.number_of_sections -1 ) : ( hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "827d5fd4b1a0426037529ee9bba48da0" or hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "82354f92508dcb33acda01c226de2975" or hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "ccd0f5d837a6cc05a861f040cbdfe080" or hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "8d2c169356afe8b53b0ecb83de3084b9" )In plain words (Heuristic)
- All patterns in the rule must match.
- A for-loop checks a property over several matches or items.
- Uses the pe module.
- Uses the hash module.
- Compares a hash of the file or a part of it.
- Checks the PE import hash (imphash).
- Checks PE sections (names, count or properties).
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
Sample hashes
Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).
- ba8cd92cc059232203bcadee260ddbae273fc4c89b18424974955607476982c4
- 5b02fc3cfb5d74c09cab724b5b54c53a7c07e5766bffe5b1adf782c9e86a8541
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: b9aa3ddc-7892-402f-b045-182884ee9bad
Metadata
| version | 1.0 |
|---|---|
| classification | TLP:CLEAR |
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