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.
It connects to certain websites to send and receive information.
It drops files as ransom note.
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:
- {drive}:\test.avg ← deleted right away
It drops and executes the following files:
- %Temp%\{random name} ← a captured screenshot of the infected system
(Note: %Temp% is the Windows temporary folder, where it usually is C:\Windows\Temp on all Windows operating system versions.)
It adds the following mutexes to ensure that only one of its copies runs at any one time:
Other Details
This Ransomware connects to the following website to send and receive information:
- {BLOCKED}thetic-electr.{BLOCKED}hostapp.com
- {BLOCKED}thetic-electr.{BLOCKED}hostapp.com/i.php
It encrypts files with the following extensions:
- .001
- .3ds
- .7zip
- .BESR
- .BIN
- .CDR
- .DAA
- .DMG
- .DRW
- .ISO
- .ISZ
- .MDF
- .NRG
- .PBF
- .SQLITE
- .SQLITE2
- .SQLITE3
- .SQLITEDB
- .SVG
- .UIF
- .WMF
- .abr
- .accdb
- .afi
- .arw
- .asm
- .bkf
- .c4d
- .cab
- .cbm
- .cbu
- .class
- .cls
- .cpp
- .cr2
- .crw
- .csh
- .csv
- .dat
- .dbx
- .dcr
- .dgn
- .djvu
- .dng
- .doc
- .docm
- .docx
- .dwfx
- .dwg
- .dxf
- .fla
- .fpx
- .gdb
- .gho
- .ghs
- .hdd
- .html
- .iso
- .iv2i
- .java
- .key
- .lcf
- .matlab
- .max
- .mdb
- .mdi
- .mrbak
- .mrimg
- .mrw
- .nef
- .odg
- .ofx
- .orf
- .ova
- .ovf
- .pbd
- .pcd
- .pdf
- .php
- .pps
- .ppsx
- .ppt
- .pptx
- .pqi
- .prn
- .psb
- .psd
- .pst
- .ptx
- .pvm
- .pzl
- .qfx
- .qif
- .r00
- .raf
- .rar
- .raw
- .reg
- .rw2
- .s3db
- .skp
- .spf
- .spi
- .sql
- .sqlite-journal
- .stl
- .sup
- .swift
- .tib
- .txf
- .u3d
- .v2i
- .vcd
- .vcf
- .vdi
- .vhd
- .vmdk
- .vmem
- .vmwarevm
- .vmx
- .vsdx
- .xls
- .wallet
- .win
- .xlsm
- .xlsx
- .zip
It checks for the presence of the following antivirus and security applications:
Ransomware Routine
This Ransomware avoids encrypting files with the following strings in their file name:
- bootsect.bak
- boot.ini
- ntldr
- ntdetect.com
- ntuser.dat
- windows
It drops the following file(s) as ransom note:
- {folder containing encrypted files}\FILES.TXT
- {malware path}\HELP.TXT
It leaves text files that serve as ransom notes containing the following text:
- Don't panic, read this and contact someone from IT department.
Your computer has been infected with a virus known as ransomware.
All files including your personal or business documents, backups and projects are encrypted.
Encryption is very sophisticated and without paying a ransom you won't get your files back.
You could be advised not to pay, but you should anyway get in touch with us.
Ransom value for your files is 5000$ to be paid in digital currency called Bitcoin.
If you have questions, write us.
If you have doubts, write us.
If you want to negotiate, write us.
If you want to make sure we can get your files back, write us.
{BLOCKED}ov@protonmail.ch
glushkov@tutanota.de
igor.glushkov.83@mail.ru
In case we don't respond to an email within one day, download application called BitMessage and reach to us for the fastest response.
BitMessage BM-{BLOCKED}Fb5ZRaMuYdryqxsMNxFMudibvnY6
#########################################################################
To someone from IT department
This is custom developed ransomware, decrypter won't be made by an antivirus
company. This one doesn't even have a name. It uses AES-256 for encrypting
files, RSA-2048 for storing encrypted AES-256 password and SHA-2
for keeping the encrypted file integrity. It's written in C++ and have passed
many quality assurance tests. To prevent this next time use offline backups.
#########################################################################
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 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
Restart in Safe Mode
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To restart in Safe Mode:
• For Windows 2000 users
- Restart your computer.
- Press F8 when you see the Starting Windows bar at the bottom of the screen.
- Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.
• For Windows XP users
- Restart your computer.
- Press F8 after the Power-On Self Test (POST) routine is done. If the Windows Advanced Options menu does not appear, try restarting then pressing F8 several times when the POST screen appears.
- Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.
• For Windows Server 2003 users
- Restart your computer.
- Press F8 after Windows starts up. If the Windows Advanced Options menu does not appear, try restarting again and pressing F8 several times afterward.
- On the Windows Advanced Option menu, use the arrow keys to select Safe Mode then press Enter.
• For Windows Vista, Windows 7, and Windows Server 2008 users
- Restart your computer.
- Press F8 after the Power-On Self Test (POST) routine is done. If the Advanced Boot Options menu does not appear, try restarting and then pressing F8 several times after the POST screen is displayed.
- On the Advanced Boot Options menu, use the arrow keys to select the Safe Mode option, and then press Enter.
• For Windows 8, Windows 8.1, and Windows Server 2012 users
- Access the Charms bar by moving your mouse pointer to the upper right corner of the screen.
- Move your mouse pointer down and click Settings>Change your PC Settings.
- In the left panel, click General.
- In the right panel, scroll down to the bottom to find the Advanced startup section, then click the Restart now button and wait for the system to restart.
- In the Advanced Startup menu, click Troubleshoot>Advanced Options>Startup Settings>Restart and wait for the system to restart.
- In the Startup Settings menu, press 4 to enable safe mode.
Step 4
Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_DEFRAY.B. 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 5
Restore encrypted files from backup.
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