Ransom.Win64.VICESOCIETY.A

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 encrypts files with specific file extensions. It drops files as ransom note. It avoids encrypting files with the following file extensions.

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:

• {Encrypted Directory}\ALL YOUR FILES ARE ENCRYPTED!!!
• %System Root%\ALL YOUR FILES ARE ENCRYPTED!!!
• %Public%\{random characters} → configuration file
• %Public%\noise.bmp → set as wallpaper

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.)

It adds the following processes:

• "%System%\cmd.exe" /c vssadmin.exe Delete Shadows /All /Quiet
• reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default" /va /f
• reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Servers" /f
• reg add "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Servers"
• cd %userprofile%\documents\
• attrib Default.rdp -s -h
• del Default.rdp
• for /F "tokens=*" %1 in ('wevtutil.exe el') DO wevtutil.exe cl "%1"
• "%System%\cmd.exe" /c del {Malware File Path}\{Malware File Name} > nul → to delete itself

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

Other System Modifications

This Ransomware changes the desktop wallpaper by modifying the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
Wallpaper = %Public%\noise.bmp

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
WallpaperStyle = 4

It sets the system's desktop wallpaper to the following image:

• %Public%\noise.bmp
  

Other Details

This Ransomware does the following:

• It avoids encrypting the following drive types:
  • CR-ROM
  • RAM Disk
• It avoids encrypting files with file size less than or equal to 16 bytes.
• It uses Windows Restart Manager to unlock files it will encrypt.

It accepts the following parameters:

• /f {file to encrypt} → encrypts specific files
• /d {directory to encrypt} → encrypts specific directories
• /s → disables self delete option

Ransomware Routine

This Ransomware encrypts files with the following extensions:

• unlocked using Windows Restart Manager:
  • .$ER
  • .4D
  • .4DD
  • .ABCDDB
  • .ABS
  • .ABX
  • .ACCDB
  • .ACCDC
  • .ACCDE
  • .ACCDR
  • .ACCDT
  • .ACCDW
  • .ACCFT
  • .ADB
  • .ADE
  • .ADF
  • .ADN
  • .ADP
  • .ALF
  • .ASK
  • .BTR
  • .CAT
  • .CDB
  • .CKP
  • .CMA
  • .CPD
  • .CRYPT12
  • .CRYPT5
  • .CRYPT6
  • .CRYPT7
  • .CRYPT8
  • .CRYPT9
  • .DACONNECTIONS
  • .DACPAC
  • .DAD
  • .DADIAGRAMS
  • .DASCHEMA
  • .DB
  • .DB-
  • .DB-SHM
  • .DB-WA
  • .DB.CRYPT
  • .DB.CRYPT12
  • .DB.CRYPT8
  • .DB2
  • .DB3
  • .DBC
  • .DBF
  • .DBS
  • .DBT
  • .DBV
  • .DBX
  • .DCB
  • .DCT
  • .DCX
  • .DD
  • .DLIS
  • .DP1
  • .DQY
  • .DSK
  • .DSN
  • .DTSX
  • .DX
  • .ECO
  • .ECX
  • .EDB
  • .EPIM
  • .ERX
  • .EXB
  • .FCD
  • .FDB
  • .FIC
  • .FLEXOLIBRARY
  • .FM5.
  • .FMP
  • .FMP12
  • .FMPS
  • .FO
  • .FP3
  • .FP4
  • .FP5
  • .FP7
  • .FPT
  • .FRM
  • .GDB
  • .GRDB
  • .GWI
  • .HDB
  • .HIS
  • .IB
  • .IDB
  • .IHX
  • .ITDB
  • .ITW
  • .JET
  • .JTX
  • .KDB
  • .KEXI
  • .KEXIC
  • .KEXIS
  • .LDF
  • .LGC
  • .LWX
  • .MAF
  • .MAQ
  • .MAR
  • .MARSHA
  • .MAS
  • .MAV
  • .MAW
  • .MDB
  • .MDBHTM
  • .MDF
  • .MDN
  • .MDT
  • .MFD
  • .MPD
  • .MRG
  • .MUD
  • .MWB
  • .MYD
  • .NDF
  • .NNT
  • .NRMLIB
  • .NS2
  • .NS3
  • .NS4
  • .NSF
  • .NV
  • .NV2
  • .NWDB
  • .NYF
  • .ODB
  • .OQY
  • .ORA
  • .ORX
  • .OWC
  • .P96
  • .P97
  • .PAN
  • .PDB
  • .PDM
  • .PNZ
  • .QRY
  • .QVD
  • .RBF
  • .RCTD
  • .ROD
  • .RODX
  • .RPD
  • .RSD
  • .SAS7BDAT
  • .SBF
  • .SCX
  • .SDB
  • .SDC
  • .SDF
  • .SIS
  • .SPQ
  • .SQ
  • .SQLITE
  • .SQLITE3
  • .SQLITEDB
  • .TE
  • .TEACHER
  • .TEMX
  • .TMD
  • .TPS
  • .TRC
  • .TRM
  • .UD
  • .UDB
  • .USR
  • .V12
  • .VIS
  • .VPD
  • .VVV
  • .WDB
  • .WMDB
  • .WRK
  • .XDB
  • .XLD
  • .XMLFF

It avoids encrypting files found in the following folders:

• $RECYCLE.BIN
• AVG
• Avast
• Avira
• COMODO
• Chrome
• Common Files
• Common7
• Dr.Web
• ESET
• Firefox
• Install Shield Installation Information
• Intel
• Internet Explorer
• KasperskyLab
• McAfee
• Microsoft
• Microsoft Help
• Microsoft SDKs
• Microsoft Shared
• Microsoft VS Code
• Microsoft Visual Studio
• Microsoft
• NET
• MovieMaker
• Mozilla
• Mozilla Firefox
• NVIDIA Corporation
• Opera
• Package Cache
• Packages
• Reference assemblies
• Spytechsoftware
• Symantec
• Symantec Client Security
• System Volume Information
• Temp
• Windows
• Windows App Certification Kit
• Windows Defender
• Windows Kits
• Windows Mail
• Windows Media Player
• Windows Mult imedia Platform
• Windows NT
• Windows Phone Kits
• Windows Phone Si lverlight Kits
• Windows Photo Viewer
• Windows Portable Devices
• Windows Security
• Windows Sidebar
• WindowsApps
• WindowsPower
• Shell
• Wsus
• Yandex Browser
• sysconfig

It appends the following extension to the file name of the encrypted files:

• .v-s0c13ty

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

• {Encrypted Directory}\ALL YOUR FILES ARE ENCRYPTED!!!
  
• %System Root%\ALL YOUR FILES ARE ENCRYPTED!!!

It avoids encrypting files with the following file extensions:

• .386
• .adv
• .ani
• .bat
• .bin
• .cab
• .cmd
• .com
• .cp
• .cur
• .deskthemepack
• .diagcab
• .diagcfg
• .diagpkg
• .dl
• .drv
• .exe
• .hlp
• .hta
• .ic
• .icns
• .ico
• .ics
• .idx
• .lnk
• .lock
• .mod
• .mpa
• .msc
• .msi
• .msp
• .msstyles
• .msu
• .nls
• .nomedia
• .ocx
• .prf
• .ps1
• .rom
• .rtp
• .scr
• .shs
• .sp
• .sys
• .theme
• .themepack
• .wpx