This detection identifies potential adversary activity involving specific file artifacts or process behaviors matching the AntiDote12DemoSISTeam signature within the Azure Sentinel environment. Proactive hunting for this indicator is essential to uncover early-stage reconnaissance or lateral movement attempts that may not yet trigger high-severity alerts, allowing the SOC team to validate and respond before an incident escalates.
rule AntiDote12DemoSISTeam
{
meta:
author="malware-lu"
strings:
$a0 = { E8 F7 FE FF FF 05 CB 22 00 00 FF E0 E8 EB FE FF FF 05 BB 19 00 00 FF E0 E8 BD 00 00 00 08 B2 62 00 01 52 17 0C 0F 2C 2B 20 7F 52 79 01 30 07 17 29 4F 01 3C 30 2B 5A 3D C7 26 11 26 06 59 0E 78 2E 10 14 0B 13 1A 1A 3F 64 1D 71 33 57 21 09 24 8B 1B 09 37 08 61 0F 1D 1D 2A 01 87 35 4C 07 39 0B }
condition:
$a0
}This YARA rule can be deployed in the following contexts:
This rule contains 1 string patterns in its detection logic.
Here are 5 specific false positive scenarios for the AntiDote12DemoSISTeam detection rule, along with targeted filtering strategies:
Scenario: The SIEM team’s automated vulnerability scanner (e.g., Tenable Nessus or Qualys) executes a scheduled nightly job that deploys a temporary diagnostic agent to endpoints. This agent matches the YARA signature due to shared code libraries used in the demo environment, triggering alerts during the 2:00 AM – 4:00 AM maintenance window.
TenableAgent.exe or QualysPCAgent.exe) and restrict the rule to trigger only outside of the defined maintenance window (e.g., exclude alerts between 02:00 and 04:00 UTC).Scenario: The DevOps team utilizes Ansible playbooks to deploy a “DemoSISTeam” configuration package to new onboarding servers. During deployment, Ansible extracts the demo binary into a temporary directory (C:\Temp\Deploy), which is immediately scanned by the YARA engine before the file is moved or deleted.
C:\Temp\, D:\Staging\, or specific Ansible working directories, ensuring that files residing in these transient locations do not trigger the rule regardless of their content match.Scenario: The internal IT Security team runs a quarterly “DemoSISTeam” training simulation where analysts manually install and run the demo tool on their own workstations to verify detection capabilities. These manual installations often involve running the executable directly from a network share (\\FileServer\IT_Security\Tools) rather than a standard application directory.