Analysis by: Arianne Grace Dela Cruz
ALIASES:

HackTool:Win32/Passview (MICROSOFT); PUA.PSWTool.Credentialsfileview (IKARUS)

 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

This Hacking Tool 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: 148,992 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 29 Apr 2021
Payload: Displays windows

Arrival Details

This Hacking Tool 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 Hacking Tool drops the following files:

  • {Malware Path}\{Malware Name}.cfg - configuration file

Other Details

This Hacking Tool does the following:

  • It is used to decrypt passwords and data stored in the following Windows credentials folder:
    • %Application Data%\Microsoft\Credentials\
    • %AppDataLocal%\Microsoft\Credentials\
    • %System%\config\systemprofile\AppData\Local\Microsoft\Credentials\
  • It can also be used to decrypt passwords and data stored on external hard drive.
  • It displays the following upon execution to allow the user to choose credential decryption options:
  • It displays the following data:
    • Filename
    • Windows Version
    • Decrypted Data Size
    • Modified Time
    • Entry Type
    • Persist
    • Entry Name
    • Username
    • Decrypted Password
    • Full Path
    • File Size
    • File Modified Time
    • File Created Time

  • It can be ran as it is, or with the following arguments:
    • /StartDecrypt - start the program with default configuration
    • /deleteregkey
    • /nosaveload - start the program and set the configuration
    • /savelangfile - export the language file as {filename}_lng.ini

  SOLUTION

Minimum Scan Engine: 9.800
SSAPI PATTERN File: 2.285.00
SSAPI PATTERN Date: 07 May 2020

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

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.  
  • {Malware Path}\{Malware Name}.cfg

Step 4

Scan your computer with your Trend Micro product to delete files detected as HackTool.Win64.NirSoftPT.SM. 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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