Analysis by: Arvin Roi Macaraeg

ALIASES:

Trojan-Banker.Win32.Jimmy.ery(KASPERSKY); Trojan:Win32/CryptInject!MSR(Microsoft)

 PLATFORM:

Windows

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

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Ransomware 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.

It drops files as ransom note.

  TECHNICAL DETAILS

File Size: 318,976 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 24 Sep 2019

Arrival Details

This Ransomware 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 Ransomware drops the following files:

  • %User Temp%\11c950.bmp
  • {encrypted folder}\{random characters}-readme.txt

(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).)

It adds the following processes:

  • powershell -e {Base-64 encoded}

Other System Modifications

This Ransomware adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
ZXQ = {hex values}

HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
E9OI = {hex values}

HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
uvm9h = {hex values}

HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
PNjp30 = {hex values}

HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
lYBttLJ = .{encrypted extension}

HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
FK8LfRFZ = {hex values}

It modifies the following registry entries:

HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = %User Temp%\11c950.bmp

Other Details

This Ransomware connects to the following possibly malicious URL:

  • {BLOCKED}s.ca
  • {BLOCKED}uck.de
  • {BLOCKED}ttabordeaux.fr
  • {BLOCKED}god.be
  • {BLOCKED}veloper.com
  • {BLOCKED}consultingcompany.com
  • {BLOCKED}natblago.ru
  • {BLOCKED}sconsult.com
  • {BLOCKED}art.com
  • {BLOCKED}abasin.com
  • {BLOCKED}sale.com
  • {BLOCKED}lacemag.com
  • {BLOCKED}nmice.com
  • {BLOCKED}addfr4ahr.{BLOCKED}p.ua
  • {BLOCKED}-reinigen.com
  • {BLOCKED}t.online
  • {BLOCKED}n.com
  • {BLOCKED}ivadigital.com
  • {BLOCKED}ttelhanna.com
  • {BLOCKED}nforensic.com
  • {BLOCKED}yn.com
  • {BLOCKED}siness.com
  • {BLOCKED}tcleaning.net
  • {BLOCKED}l.co.za
  • {BLOCKED}onshosting.co.uk
  • {BLOCKED}rome.eu
  • www.{BLOCKED}biz.com
  • {BLOCKED}tordallas.com
  • {BLOCKED}burgcottage.com
  • {BLOCKED}cave.com
  • {BLOCKED}ov.com
  • {BLOCKD}l.de
  • {BLOCKED}ingplanet.com
  • {BLOCKED}iznes.com
  • {BLOCKED}ia-conseil.fr
  • {BLOCKED}udible.com
  • {BLOCKED}tter.nl
  • {BLOCKED}are.com
  • {BLOCKED}rardon.com
  • {BLOCKED}go.eu
  • {BLOCKED}n.nl
  • {BLOCKED}kniksipil.com
  • {BLOCKED}i.eus
  • {BLOCKED}ficial.nl
  • {BLOCKED}oomequipment.ie
  • www.{BLOCKED}oomequipment.ie
  • {BLOCKED}lay.ca
  • {BLOCKED}dwifery.com
  • {BLOCKED}o.org
  • {BLOCKED}ndustries.com
  • {BLOCKED}rom.com
  • {BLOCKED}andliebe.de
  • {BLOCKED}aard.dk
  • {BLOCKED}ter-p.net
  • {BLOCKED}eszczecin.pl
  • {BLOCKED}eupetel.fr
  • {BLOCKED}image.ae
  • {BLOCKED}rn.co.uk
  • {BLOCKED}ublog.wordpress.com
  • {BLOCKED}amedispa.com
  • {BLOCKED}s.dk
  • {BLOCKED}fer.fr
  • {BLOCKED}mbv.nl
  • {BLOCKED}apernambuco.com
  • {BLOCKED}elers.com
  • {BLOCKED}o.com
  • {BLOCKED}iatonaggelon.gr
  • {BLOCKED}owersandrakes.com
  • {BLOCKED}s.{BLOCKED}a.it
  • {BLOCKED}ttagaite.fr
  • {BLOCKED}n.sparen-it.de
  • {BLOCKED}collectivites.com

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

    Ransomware Routine

    This Ransomware appends the following extension to the file name of the encrypted files:

    • .{random characters}

    It drops the following file(s) as ransom note:

    • {Every Path}\{encrypted extension}-readme.txt

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 15.384.02
FIRST VSAPI PATTERN DATE: 23 Sep 2019
VSAPI OPR PATTERN File: 15.385.00
VSAPI OPR PATTERN Date: 24 Sep 2019

Step 1

Trend Micro products with the XGen technology detect this malware as

[ Learn More ]
 
  • Troj.Win32.TRX.XXPE50FFF031P0005

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

Identify and terminate files detected as Ransom.Win32.SODINOKIBI.NL

[ 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 6

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
    • ZXQ = {hex values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
    • E9OI = {hex values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
    • uvm9h = {hex values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
    • PNjp30 = {hex values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
    • lYBttLJ = .{encrypted extension}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows
    • FK8LfRFZ = {hex values}

Step 7

Restore this modified registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Control Panel\Desktop
    • From: Wallpaper = %User Temp%\11c950.bmp
      To: Wallpaper = {User's choice for wallpaper}

Step 8

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.
  • {Every Path}\{encrypted extension}-readme.txt
  • %User Temp%\11c950.bmp

Step 9

Reset your Desktop properties

[ Learn More ]

Step 10

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.SODINOKIBI.NL. 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.

Step 11

Restore encrypted files from backup.


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