Analysis by: Joshua Paul Ignacio
ALIASES:

Trojan-PSW.Win32.Vidar.arp (KASPERSKY); TR/Crypt.Agent.icwkb(ANTIVIR)

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  TECHNICAL DETAILS

File Size: 754,176 bytes
File Type: EXE
Initial Samples Received Date: 15 Jul 2019

Installation

This Trojan Spy drops the following files:

  • %All Users Profile%\{Random Characters}\{Random Characters}.zip
  • %All Users Profile%\{Random Characters}\ld
  • %All Users Profile%\{Random Characters}\files\passwords.txt
  • %All Users Profile%\{Random Characters}\files\outlook.txt
  • %All Users Profile%\{Random Characters}\files\information.txt
  • %Temporary Internet Files%\Content.IE5\{Random Characters}\line[1].txt
  • %All Users Profile%\freebl3.dll
  • %All Users Profile%\mozglue.dll
  • %All Users Profile%\mscvp140.dll
  • %All Users Profile%\nss3.dll
  • %All Users Profile%\softokn3.dll
  • %All Users Profile%\vcruntime140.dll

(Note: %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %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).)

It creates the following folders:

  • %All Users Profile%\{Random Characters}
  • %All Users Profile%\{Random Characters}\files
  • %All Users Profile%\{Random Characters}\files\Soft
  • %All Users Profile%\{Random Characters}\files\Soft\Authy

(Note: %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). )

Other Details

This Trojan Spy connects to the following possibly malicious URL:

  • http://{BLOCKED}i.com/line
  • {BLOCKED}y.top/399
  • {BLOCKED}y.top/freelb3.dll
  • {BLOCKED}y.top/mozglue.dll
  • {BLOCKED}y.top/msvcp140.dll
  • {BLOCKED}y.top/nss3.dll
  • {BLOCKED}y.top/softokn3.dll
  • {BLOCKED}y.top/vcruntime140.dll

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 15.578.01
FIRST VSAPI PATTERN DATE: 12 Jul 2019
VSAPI OPR PATTERN File: 15.579.00
VSAPI OPR PATTERN Date: 13 Jul 2019

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.XXPE50FFF033

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

Restart in Safe Mode

[ Learn More ]

Step 5

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %All Users Profile%\{Random Characters}
  • %All Users Profile%\{Random Characters}\files
  • %All Users Profile%\{Random Characters}\files\Soft
  • %All Users Profile%\{Random Characters}\files\Soft\Authy

Step 6

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.
  • %All Users Profile%\{Random Characters}\{Random Characters}.zip
  • %All Users Profile%\{Random Characters}\ld
  • %All Users Profile%\{Random Characters}\files\passwords.txt
  • %All Users Profile%\{Random Characters}\files\outlook.txt
  • %All Users Profile%\{Random Characters}\files\information.txt
  • %Temporary Internet Files%\Content.IE5\{Random Characters}\line[1].txt
  • %All Users Profile%\freebl3.dll
  • %All Users Profile%\mozglue.dll
  • %All Users Profile%\mscvp140.dll
  • %All Users Profile%\nss3.dll
  • %All Users Profile%\softokn3.dll
  • %All Users Profile%\vcruntime140.dll

Step 7

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TrojanSpy.Win32.VIDAR.CBV. 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.


Did this description help? Tell us how we did.