Lightweight_Backdoor_6
YARA-2025-1377
High
general
Active
No description available for this rule
Lightweight_Backdoor_6.yar
Valid Syntax
rule Lightweight_Backdoor_6
{
meta:
author = "US CERT"
reference = "https://www.us-cert.gov/ncas/alerts/TA14-353A"
strings:
$STR1 = "{ 8A 10 80 ?? 4E 80 ?? 79 88 10}"
$STR2 = "{ SA 10 80 ?? 79 80 ?? 4E 88 10}"
condition:
(uint16(0) == 0x5A4D or uint16(0) == 0xCFD0 or uint16(0) == 0xC3D4 or uint32(0) == 0x46445025 or uint32(1) == 0x6674725C) and all of them
}Rule Metadata
author
US CERT
reference
https://www.us-cert.gov/ncas/alerts/TA14-353A
String Definitions
{"name":"$STR1","value":"\"{ 8A 10 80 ?? 4E 80 ?? 79 88 10}\""}
{"name":"$STR2","value":"\"{ SA 10 80 ?? 79 80 ?? 4E 88 10}\""}
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 Lightweight_Backdoor_6.yar /path/to/suspicious/file # Scan a directory recursively yara -r Lightweight_Backdoor_6.yar /path/to/directory/ # Scan with metadata output yara -m Lightweight_Backdoor_6.yar target_file # Scan process memory (Linux) yara Lightweight_Backdoor_6.yar /proc/[pid]/exe
Integration Examples
Python (yara-python)
import yara
rules = yara.compile(filepath='Lightweight_Backdoor_6.yar')
matches = rules.match('/path/to/file')
ClamAV Integration
clamscan --yara-rules=Lightweight_Backdoor_6.yar /path/to/scan
Rule Information
YARA ID
YARA-2025-1377
Author
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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