backdoor
YARA-2025-0597
High
general
Active
This rule detects fake samples with a backdoor/dropper
backdoor.yar
Valid Syntax
/*
This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and
open to any user or organization, as long as you use it under this license.
*/
/*
Androguard module used in this rule file is under development by people at https://koodous.com/.
You can get it, along with installation instructions, at https://github.com/Koodous/androguard-yara
*/
import "androguard"
rule backdoor: dropper
{
meta:
author = "Antonio Sanchez <asanchez@koodous.com>"
description = "This rule detects fake samples with a backdoor/dropper"
sample = "0c3bc51952c71e5bb05c35346005da3baa098faf3911b9b45c3487844de9f539"
source = "https://koodous.com/rulesets/1765"
condition:
androguard.url("http://sys.wksnkys7.com")
or androguard.url("http://sys.hdyfhpoi.com")
or androguard.url("http://sys.syllyq1n.com")
or androguard.url("http://sys.aedxdrcb.com")
or androguard.url("http://sys.aedxdrcb.com")
}Rule Metadata
author
Antonio Sanchez <asanchez@koodous.com>
description
This rule detects fake samples with a backdoor/dropper
sample
0c3bc51952c71e5bb05c35346005da3baa098faf3911b9b45c3487844de9f539
source
https://koodous.com/rulesets/1765
Tags
dropper
Threat Analysis
This YARA rule is designed to detect general threats.
Severity Level: High
The rule uses pattern matching to identify specific byte sequences, strings, or behavioral patterns associated with malicious activity.
Detection Capabilities
- File-based detection for executables and documents
- Memory scanning for running processes
- Network traffic analysis support
Command Line Usage
# Scan a single file yara backdoor.yar /path/to/suspicious/file # Scan a directory recursively yara -r backdoor.yar /path/to/directory/ # Scan with metadata output yara -m backdoor.yar target_file # Scan process memory (Linux) yara backdoor.yar /proc/[pid]/exe
Integration Examples
Python (yara-python)
import yara
rules = yara.compile(filepath='backdoor.yar')
matches = rules.match('/path/to/file')
ClamAV Integration
clamscan --yara-rules=backdoor.yar /path/to/scan
Rule Information
YARA ID
YARA-2025-0597
Repository
Created
August 19, 2025
Last Updated
August 19, 2025
Last Imported
Never
Threat Intelligence
Risk Level
High
Category
general
Detection Confidence
Analysis Pending
False Positive Rate
Not Available
Last Seen in Wild
No Data
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