Agent.BAO

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Classification

Category:

Malware-Downloader

Type:

-

Platform:

W32

Aliases:

Agent.BAO

Summary

Agent.BAO, a variant of Agent, is a Trojan. Agent.BAO downloads different trojans and backdoors and activate them on an affected system without user's approval.

Removal

Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

Suspect a file is incorrectly detected (a False Positive)?

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note You need administrative rights to change the settings.

Find out more

Knowledge Base

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User Guide

See the user guide for your product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

Agent.BAO is a trojan downloader. It connects to a specified site on the Internet and gets more malicious download links.

Upon execution, it drops a copy of itself from the following location:

  • %sysdir%\SVCH0ST.exe

It also creates a service with the following service name:

  • 000Kendy Demo Service

It adds the following service registry entry:

  • [HKLM\System\CurrentControlSet\Services\000Kendy Service]ImagePath=%sysdir%\svch0st.exe

It downloads a text file from the following site:

  • https://kkpic.net/ggg/adc/[REMOVED].txt

This text file contains download links of other malware.

Below is the list of some of the download sites gathered and the corresponding detection name of the downloaded files:

  • http://222.220.16.185/data6/j[REMOVED].exe - Packed.Win32.NSAnti.b
  • https://222.220.16.185/data6/w[REMOVED].exe - Trojan-PSW.Win32.Lmir.bdb
  • https://222.220.16.185/data6/m[REMOVED].exe - Trojan-Downloader.Win32.Small.bxa
  • https://222.220.16.185/data6/w[REMOVED].exe - Trojan-PSW.Win32.Agent.im
  • https://222.220.16.185/data6/m[REMOVED].exe - Trojan-PSW.Win32.Delf.fz
  • https://222.220.16.185/data6/j[REMOVED].exe - Backdoor.Win32.Agent.aex
  • https://222.220.16.185/data6/w[REMOVED].exe - Backdoor.Win32.Agent.aex
  • https://222.220.16.185/data6/z[REMOVED].exe - Trojan-PSW.Win32.WOW.qm
  • https://222.220.16.185/data6/q[REMOVED].exe - Trojan-PSW.Win32.QQPass.hn
  • https://222.220.16.185/data6/c[REMOVED].exe - Trojan-Dropper.Win32.Agent.ayv

Note: The download links may vary depending on the content of the downloaded text file.

Moreover, Agent.BAO also creates a file named autorun.inf in the directory where the copy of the trojan is located. This is used to automatically execute the trojan when the folder is opened.