BKDR_POWPOOL.A
Backdoor.Win32.Agent.mytfgg (Kaspersky)
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Backdoor arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It executes commands from a remote malicious user, effectively compromising the affected system. It connects to a website to send and receive information.
TECHNICAL DETAILS
Arrival Details
This Backdoor arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Backdoor drops the following files:
- {Malware Directory}\proxy.log ← Used to store configuration for setting up Proxy Server
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- MyDemonMutex{0-10}
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Kill Process
- Download File
- Execute File
- Delete File
- Upload File
- Configure Socket Connection
- Take Screenshot
- Execute Command
- List Folders
It connects to the following websites to send and receive information:
- http://run.af{BLOCKED}online.eu/?id={Encrypted Gathered Information}
Information Theft
This Backdoor gathers the following data:
- IP Address
- Language Identifier for the System Locale
- Computer Name
- Username
- OS Version
- Adapter Information
Other Details
This Backdoor connects to the following URL(s) to check for an Internet connection:
- www.bing.com
It connects to the following URL(s) to get the affected system's IP address:
- http://www.l2.io/ip
SOLUTION
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Identify and terminate files detected as BKDR_POWPOOL.A
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 4
Search and delete this file
- {Malware Directory}\proxy.log
Step 5
Scan your computer with your Trend Micro product to delete files detected as BKDR_POWPOOL.A. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:
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