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Detects APT10 MenuPass Phishing

yara LOW Yara-Rules
aptcommunityphishing
This rule was pulled from an open-source repository and enriched with AI. Validate in a test environment before deploying to production.
View original rule at Yara-Rules →
Retrieved: 2026-05-11T23:00:00Z · Confidence: medium

Hunt Hypothesis

APT10 adversaries use MenuPass phishing to deliver malicious payloads through compromised email accounts, leveraging social engineering to trick users into executing malicious attachments or links. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate early-stage APT10 campaigns before they escalate to data exfiltration or lateral movement.

YARA Rule

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"
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 5 string patterns in its detection logic.

References

False Positive Guidance

Original source: https://github.com/Yara-Rules/rules/blob/main/maldocs/Maldoc_APT10_MenuPass.yar