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BKDR_GOOBOT.A

April 22, 2017
 Analysis by: Cris Nowell Pantanilla
 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware


This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size:

863,232 bytes

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

20 Apr 2017

Payload:

Executes files, Connects to URLs/IPs, Modifies files

Arrival Details

This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Backdoor Routine

This Backdoor connects to the following URL(s) to send and receive commands from a remote malicious user:

  • {BLOCKED}.{BLOCKED}.27.20:443

Other Details

This Backdoor requires its main component to successfully perform its intended routine.

It does the following:

  • Connect to remote site
  • Create a HTTP Proxy
  • Create a Socks Proxy
  • Create a remote shell session
  • It is capable of executing commands:
    • Create/Delete directories
    • Copy/Delete/Rename/Move files
    • Get/Set Date and Time
    • Execute files/command
  • It is capable of the following FTP commands:
    • List/Search files
    • Delete/Rename/Move files
    • Get file size
    • Retrieve/Store files
    • Execute command
  • Terminate services

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.352.07

FIRST VSAPI PATTERN DATE:

20 Apr 2017

VSAPI OPR PATTERN File:

13.353.00

VSAPI OPR PATTERN Date:

21 Apr 2017

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

Scan your computer with your Trend Micro product to delete files detected as BKDR_GOOBOT.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 this Knowledge Base page for more information.


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