Analysis by: Jeanne Jocson
ALIASES:

Win32/Korplug.HT(NOD32),Trojan.Win32.Korplug(Ikarus)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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 may be manually installed by a user.

  TECHNICAL DETAILS

File Size: 1,040,896 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 01 Mar 2016

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.

It may be manually installed by a user.

Other Details

This backdoor connects to the following possibly malicious URL:

  • http://bkmail.{BLOCKED}s.com/{random 48 alphanumeric characters}
  • http://sswwmail.{BLOCKED}s.com/{random 48 alphanumeric characters}

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 12.374.04
FIRST VSAPI PATTERN DATE: 01 Mar 2016
VSAPI OPR PATTERN File: 12.375.00
VSAPI OPR PATTERN Date: 02 Mar 2016

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_PLUGX.DUKOP. 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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