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BKDR_LISUIFE.A

June 24, 2015
 Analysis by: Cris Nowell Pantanilla
 ALIASES:

Trojan-Downloader.Win32.Agent.abder (Kaspersky), Backdoor:Win32/Lisuife.B!dha (Microsoft)

 PLATFORM:

Windows

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

This backdoor is implicated in the 2015 compromise of the German parliament, also known as Bundestag. This malware connects to a specific C&C server that we believe was controlled by Operation Pawn Storm during extended periods from February 2014 - February 2015.

To get a one-glance comprehensive view of the behavior of this Backdoor, refer to the Threat Diagram shown below.

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 is a component of other malware.

It connects to a website to send and receive information. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

1,048,064 bytes

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

30 Apr 2015

Payload:

Connects to URLs/IPs

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.

Installation

This backdoor is a component of other malware.

Backdoor Routine

This backdoor connects to the following websites to send and receive information:

  • {BLOCKED}.{BLOCKED}.112.10

However, as of this writing, the said sites are inaccessible.

NOTES:

This backdoor is capable of receiving arbitrary commands from a remote attacker that may be executed on the affected system.

  SOLUTION

Minimum Scan Engine:

9.750

FIRST VSAPI PATTERN FILE:

11.720.08

FIRST VSAPI PATTERN DATE:

30 Apr 2015

VSAPI OPR PATTERN File:

11.721.00

VSAPI OPR PATTERN Date:

01 May 2015

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_LISUIFE.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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