TrojanSpy.Win32.NEGASTEAL.DYSHFX

March 06, 2023

Analysis by: Bryelle Timothy Nisperos

ALIASES:

Trojan:Win32/Leonem (MICROSOFT), UDS:Trojan-PSW.Win32.Agensla.gen (KASPERSKY)

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: 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.

It connects to a website to send and receive information.

TECHNICAL DETAILS

File Size: 395,349 bytes

File Type: EXE

Memory Resident: Yes

Initial Samples Received Date: 23 Feb 2023

Payload: Drops files, Steals information, 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 drops and executes the following files:

%User Temp%\whgovv.ze
%User Temp%\niiprb.hb
%User Temp%\cyazhw.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Backdoor Routine

This Trojan Spy connects to the following websites to send and receive information:

{BLOCKED}pertsconsultgh.co

Information Theft

This Trojan Spy gathers the following data:

It gathers information from:
- Current Time
- Username
- Computer Name
- OS Version
- CPU Architecture
- Ram
- Browsers
- Emails
- FTPs
- VPNs
- VNCs
- Instant Messaging Applications
- Others

Other Details

This Trojan Spy does the following:

SOLUTION

Minimum Scan Engine: 9.800

FIRST VSAPI PATTERN FILE: 18.296.02

FIRST VSAPI PATTERN DATE: 06 Mar 2023

VSAPI OPR PATTERN File: 18.297.00

VSAPI OPR PATTERN Date: 07 Mar 2023

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:

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

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.

%User Temp%whgovv.ze
%User Temp%niiprb.hb
%User Temp%cyazhw.exe

Step 4

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.NEGASTEAL.DYSHFX. 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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TrojanSpy.Win32.NEGASTEAL.DYSHFX

OVERVIEW

TECHNICAL DETAILS

SOLUTION

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