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BREX_BANKER.ACD

September 11, 2017
 Analysis by: Oliver Ramirez
 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet


This Trojan Spy arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It arrives as a component bundled with malware/grayware packages. It may be manually installed by a user.

  TECHNICAL DETAILS

File Size:

2,811 bytes

File Type:

JS

Memory Resident:

Yes

Initial Samples Received Date:

21 Aug 2017

Payload:

Connects to URLs/IPs, Steals information

Arrival Details

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

It arrives as a component bundled with malware/grayware packages.

It may be manually installed by a user.

NOTES:

This Trojan Spy sends the gathered information via HTTP POST to the following URL(s):

  • https://suporteinfo.{BLOCKED}o.org

This is a Google browser extension named Interface Online.

The extension monitors all web accesses. Malicious code activates only for the following url:

  • *://*.santandernetibe.com.br/*

It searches for the following strings to start its spyware routine:

  • "NIB_Inicial.asp"

It only accepts accounts with a password length of 11 characters or more.

It has the capability to gather the following information:

  • Username
  • Password

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.608.05

FIRST VSAPI PATTERN DATE:

21 Aug 2017

VSAPI OPR PATTERN File:

13.609.00

VSAPI OPR PATTERN Date:

22 Aug 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 BREX_BANKER.ACD. 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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