Analysis by: Karen Ivy Titiwa
ALIASES:

Trojan-PSW.Win32.Racealer.dn (KASPERSKY); Gen:Variant.Ulise.101794 (BITDEFENDER)

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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

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.

  TECHNICAL DETAILS

File Size: 551,936 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 05 Mar 2020
Payload: Drops files, Connects to URLs/IPs, Downloads files

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.

Installation

This Trojan Spy adds the following processes:

  • %AppDataLocalLow%\{generated file name}.exe

(Note: %AppDataLocalLow% is the LocalLow Application Data folder, which is usually C:\Users\{user name}\AppData\LocalLow on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following mutexes to ensure that only one of its copies runs at any one time:

  • enote/{username}

Download Routine

This Trojan Spy accesses the following websites to download files:

  • http://{BLOCKED}.{BLOCKED}.{BLOCKED}.60/gate/sqlite3.dll
  • http://{BLOCKED}.{BLOCKED}.125.60/gate/libs.zip
  • http://{BLOCKED}1.site/signed.exe

It saves the files it downloads using the following names:

  • %Temporary Internet Files%\Content.IE5\{generated folder name}\sqlite3[1].dll
  • %AppDataLocalLow%\sqlite3.dll
  • %Temporary Internet Files%\Content.IE5\{generated folder name}\libs[1].zip
  • %AppDataLocalLow%\{generated folder name}\{generated file name}.zip
  • %Temporary Internet Files%\Content.IE5\{generated folder name}\signed[1].exe
  • %AppDataLocalLow%\{generated file name}.exe

(Note: %Temporary Internet Files% is the Temporary Internet Files folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temporary Internet Files on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Microsoft\Windows\Temporary Internet Files on Windows Vista, 7 and 2008(64-bit), or C:\Users\{user name}\AppData\Local\Microsoft\Windows\INetCache on Windows 8, 8.1, 2012(64-bit) and 10(64-bit).. %AppDataLocalLow% is the LocalLow Application Data folder, which is usually C:\Users\{user name}\AppData\LocalLow on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Information Theft

This Trojan Spy gathers the following data:

  • Login Data, Cookies and Web Data from the following browsers:
    • Google Chrome
    • Google Chrome SxS
    • Chromium
    • Xpom
    • Comodo Dragon
    • Amigo
    • Orbitum
    • Bromium
    • Nichrome
    • RockMelt
    • 360Browser
    • Vivaldi
    • Opera
    • Sputnik
    • Kometa
    • Uran
    • QIP Surf
    • Epic Privacy
    • CocCoc
    • CentBrowser
    • 7Star
    • Elements
    • TorBro
    • Suhba
    • Safer Browser
    • Mustang
    • Superbird
    • Chedot
    • Torch
    • QQ Browser
    • UC Browser
    • Mozilla Firefox
    • WaterFox
    • SeaMonkey
    • PaleMoon
    • Tunderbird
  • Machine information:
    • System Language
    • System TimeZone
    • Computer Name
    • Username
    • IP Address
    • Operating System
    • CPU
    • RAM
    • Screen Resolution
    • Display Devices
    • Installed Applications

Other Details

This Trojan Spy drops the following file(s)/component(s):

  • %AppDataLocalLow%\machineinfo.txt -> contains machine information of the affected machine
  • %AppDataLocalLow%\Log.zip -> contains gathered information
  • %AppDataLocalLow%\{generated folder name}\{dll name}.dll

(Note: %AppDataLocalLow% is the LocalLow Application Data folder, which is usually C:\Users\{user name}\AppData\LocalLow on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It deletes the following files to remove its traces in the system:

  • %AppDataLocalLow%\{generated folder name}\{generated file name}.zip
  • %AppDataLocalLow%\machineinfo.txt
  • %AppDataLocalLow%\{generated folder name}\{dll name}.dll
  • %AppDataLocalLow%\sqlite3.dll
  • %AppDataLocalLow%\Log.zip

(Note: %AppDataLocalLow% is the LocalLow Application Data folder, which is usually C:\Users\{user name}\AppData\LocalLow on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 15.740.05
FIRST VSAPI PATTERN DATE: 13 Mar 2020
VSAPI OPR PATTERN File: 15.741.00
VSAPI OPR PATTERN Date: 14 Mar 2020

Step 1

Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:

     
    • Troj.Win32.TRX.XXPE50FFF034

Step 2

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 3

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 4

Identify and terminate files detected as TrojanSpy.Win32.RACEALER.M

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 5

Search and delete these files

[ 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.
  • %Temporary Internet Files%\Content.IE5\{generated folder name}\sqlite3[1].dll
  • %AppDataLocalLow%\sqlite3.dll
  • %Temporary Internet Files%\Content.IE5\{generated folder name}\libs[1].zip
  • %AppDataLocalLow%\{generated folder name}\{generated file name}.zip
  • %Temporary Internet Files%\Content.IE5\{generated folder name}\signed[1].exe
  • %AppDataLocalLow%\{generated file name}.exe
  • %AppDataLocalLow%\machineinfo.txt
  • %AppDataLocalLow%\Log.zip
  • %AppDataLocalLow%\{generated folder name}\{dll name}.dll

Step 6

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.RACEALER.M. 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 the following Trend Micro Support pages for more information:


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