Analysis by: Ryan Paolo Maglaque
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

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

  TECHNICAL DETAILS

File Size: 74,240 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 14 Jun 2017

Arrival Details

This Trojan 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 Trojan drops the following files:

  • {path to malware}\{malware name}.InstallLog ← Log file
  • {path to malware}\InstallUtil.InstallLog ← Log file

Other Details

This Trojan does the following:

  • Accepts the following parameters: -installtheservice and -uninstalltheservice
  • It will try to install the service bmwappushservice after using the first parameter
  • The service installed will do the following:
    • Set the security descriptor of a service
    • Specify the action done by the service in case it fails(restart after one hour)
  • If it run without user interface, it will try to start the service Windows Template Service

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 13.470.03
FIRST VSAPI PATTERN DATE: 14 Jun 2017
VSAPI OPR PATTERN File: 13.471.00
VSAPI OPR PATTERN Date: 15 Jun 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

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

Disable this malware service

[ Learn More ]
  •  bmwappushservice

Step 4

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • {path to malware}\{malware name}.InstallLog
  • {path to malware}\InstallUtil.InstallLog

Step 5

Scan your computer with your Trend Micro product to delete files detected as TROJ_WAPPOME.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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