TrojanSpy.Win32.AZORULT.UHF

 Analysis by: Wilbert Luy

 ALIASES:

HEUR:RiskTool.Win32.BitCoinMiner.gen (Kaspersky)

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

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.

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

  TECHNICAL DETAILS

File Size:

263,168 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

19 Jul 2019

Payload:

Connects to URLs/IPs

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:

  • {Malware path and File name}.exe

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

  • {Machine GUID Hash}

Other System Modifications

This Trojan Spy deletes the following files:

  • %System%\timeout.exe

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

Backdoor Routine

This Trojan Spy connects to the following URL(s) to send and receive commands from a remote malicious user:

  • {BLOCKED}x.xyz

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

Information Theft

This Trojan Spy gathers the following data:

  • Bitcoin Wallets:
    • Monero
    • Coins
  • FTP and Email Client Credentials:
    • WinSCP
    • Outlook
  • Installed Programs
  • Machine GUID
  • System architecture
  • Screen Resolution
  • System Language
  • Time Zone and Current Computer Time
  • User Name
  • Computer Name
  • OS version
  • CPU Model
  • Keyboard Layout
  • All Drives
  • Running Processes
  • Steam Credentials and Game Data
  • Telegram Credentials
  • Skype Chat History/Messages

Other Details

This Trojan Spy connects to the following URL(s) to get the affected system's IP address:

  • {BLOCKED}.com/json

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.284.03

FIRST VSAPI PATTERN DATE:

07 Aug 2019

VSAPI OPR PATTERN File:

15.285.00

VSAPI OPR PATTERN Date:

08 Aug 2019

Step 1

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 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

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.AZORULT.UHF. 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:

Step 4

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.  

  • %System%\timeout.exe


Did this description help? Tell us how we did.