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Maldoc_APT10_MenuPass

YARA-2018-3751 Medium general Active

Detects APT10 MenuPass Phishing

Maldoc_APT10_MenuPass.yar Valid Syntax 
/*
   Yara Rule Set
   Author: Colin Cowie
   Date: 2018-09-13
   Identifier: APT 10 (MenuPass)
   Reference: https://www.us-cert.gov/ncas/alerts/TA17-117A
*/

/* Rule Set ----------------------------------------------------------------- */

import "hash"

rule Maldoc_APT10_MenuPass {
   meta:
      description = "Detects APT10 MenuPass Phishing"
      author = "Colin Cowie"
      reference = "https://www.fireeye.com/blog/threat-research/2018/09/apt10-targeting-japanese-corporations-using-updated-ttps.html"
      date = "2018-09-13"
   strings:
      $s1 = "C:\\ProgramData\\padre1.txt"
      $s2 = "C:\\ProgramData\\padre2.txt"
      $s3 = "C:\\ProgramData\\padre3.txt"
      $s5 = "C:\\ProgramData\\libcurl.txt"
      $s6 = "C:\\ProgramData\\3F2E3AB9"
   condition:
      any of them or
      hash.md5(0, filesize) == "4f83c01e8f7507d23c67ab085bf79e97" or
      hash.md5(0, filesize) == "f188936d2c8423cf064d6b8160769f21" or
      hash.md5(0, filesize) == "cca227f70a64e1e7fcf5bccdc6cc25dd"
}

Rule Metadata

description
Detects APT10 MenuPass Phishing
author
Colin Cowie
reference
https://www.fireeye.com/blog/threat-research/2018/09/apt10-targeting-japanese-corporations-using-updated-ttps.html
date
2018-09-13

String Definitions

{"name":"$s1","value":"\"C:\\\\ProgramData\\\\padre1.txt\""}
{"name":"$s2","value":"\"C:\\\\ProgramData\\\\padre2.txt\""}
{"name":"$s3","value":"\"C:\\\\ProgramData\\\\padre3.txt\""}
{"name":"$s5","value":"\"C:\\\\ProgramData\\\\libcurl.txt\""}
{"name":"$s6","value":"\"C:\\\\ProgramData\\\\3F2E3AB9\""}

Threat Analysis

This YARA rule is designed to detect general threats.

Severity Level: Medium

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 Maldoc_APT10_MenuPass.yar /path/to/suspicious/file

# Scan a directory recursively
yara -r Maldoc_APT10_MenuPass.yar /path/to/directory/

# Scan with metadata output
yara -m Maldoc_APT10_MenuPass.yar target_file

# Scan process memory (Linux)
yara Maldoc_APT10_MenuPass.yar /proc/[pid]/exe

Integration Examples

Python (yara-python)

import yara
rules = yara.compile(filepath='Maldoc_APT10_MenuPass.yar')
matches = rules.match('/path/to/file')

ClamAV Integration

clamscan --yara-rules=Maldoc_APT10_MenuPass.yar /path/to/scan

Rule Information

YARA ID
YARA-2018-3751
Created
August 19, 2025
Last Updated
August 19, 2025
Last Imported
Never

Threat Intelligence

Risk Level Medium
Category general
Detection Confidence Analysis Pending
False Positive Rate Not Available
Last Seen in Wild No Data

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