The detection rule identifies potential obfuscation or encoding techniques commonly used in malicious code to evade basic detection mechanisms. SOC teams should proactively hunt for this behavior in Azure Sentinel to uncover advanced threats that may bypass traditional signature-based detection.
YARA Rule
rule BangatCode
{
meta:
description = "Bangat code features"
author = "Seth Hardy"
last_modified = "2014-07-10"
strings:
// dec [ebp + procname], push eax, push edx, call get procaddress
$ = { FE 4D ?? 8D 4? ?? 50 5? FF }
condition:
any of them
}This YARA rule can be deployed in the following contexts:
Scenario: A system administrator is using PowerShell to automate the deployment of a new application.
Filter/Exclusion: process.name != "powershell.exe" or check for known admin scripts in a trusted directory (e.g., C:\Windows\System32\).
Scenario: A scheduled job runs nightly to clean up temporary files using a script that contains the term “Bangat” in a comment.
Filter/Exclusion: process.name == "schtasks.exe" or check for script paths in the Task Scheduler with known legitimate job names.
Scenario: A developer is using Git Bash to run a build script that includes the word “Bangat” in a placeholder or comment.
Filter/Exclusion: process.name == "bash.exe" or check for script paths in a development directory (e.g., C:\Dev\scripts\).
Scenario: A Windows Update task is running and the update log temporarily contains the term “Bangat” due to a third-party tool’s log entry.
Filter/Exclusion: process.name == "wusa.exe" or filter by log file location (e.g., C:\Windows\WindowsUpdate.log).
Scenario: A backup tool like Veeam or Commvault includes the term “Bangat” in its configuration file or log for internal reference.
Filter/Exclusion: process.name in ("veeam.exe", "cvbackup.exe") or check for file paths in known backup directories (e.g., C:\ProgramData\Backup\).