Ransom.Win32.CRYSIS.TIBGIA

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 does not have any propagation routine.

It does not have any backdoor routine.

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 copies of itself into the affected system:

• %AppDataLocal%\{Malware Filename}.exe
• %Common Startup%\{Malware Filename}.exe

(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Common Startup% is the startup folder for all users, which is usually C:\Documents and Settings\All Users\Start Menu\Programs\Startup on Windows 2000, XP, and Server 2003, or C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, and 8.)

It adds the following processes:

• vssadmin delete shadows /all /quiet
• netsh advfirewall set currentprofile state off
• wmic shadowcopy delete
• netsh firewall set opmode mode=disable
• bcdedit /set {default} bootstatuspolicy ignoreallfailures
• bcdedit /set {default} recoveryenabled no
• wbadmin delete catalog -quiet
• "%System%\mshta.exe" "%Desktop%\info.hta"
• "%System%\mshta.exe" "%Public%\desktop\info.hta"
• "%System%\mshta.exe" "{Drive Letter}\info.hta"

(Note: %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %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.)

Autostart Technique

This Ransomware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
{Malware Filename} = %AppDataLocal%\{Malware Filename}.exe

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{Malware Filename} = %AppDataLocal%\{Malware Filename}.exe

Propagation

This Ransomware does not have any propagation routine.

Backdoor Routine

This Ransomware does not have any backdoor routine.

Rootkit Capabilities

This Ransomware does not have rootkit capabilities.

Process Termination

This Ransomware terminates the following processes if found running in the affected system's memory:

• msftesql.exe
• sqlagent.exe
• sqlbrowser.exe
• sqlservr.exe
• sqlwriter.exe
• oracle.exe
• ocssd.exe
• dbsnmp.exe
• synctime.exe
• agntsvc.exe
• mydesktopqos.exe
• isqlplussvc.exe
• xfssvccon.exe
• mydesktopservice.exe
• ocautoupds.exe
• agntsvc.exe
• agntsvc.exe
• agntsvc.exe
• encsvc.exe
• firefoxconfig.exe
• tbirdconfig.exe
• ocomm.exe
• mysqld.exe
• mysqld-nt.exe
• mysqld-opt.exe
• dbeng50.exe
• sqbcoreservice.exe
• excel.exe
• infopath.exe
• msaccess.exe
• mspub.exe
• onenote.exe
• outlook.exe
• powerpnt.exe
• steam.exe
• thebat.exe
• thebat64.exe
• thunderbird.exe
• visio.exe
• winword.exe
• wordpad.exe

Other Details

This Ransomware does the following:

• It encrypts files from local drives, removable drives, CD-ROM drives, and network shares
• It scans specific database related file extensions
• fdb
• sql
• 4dd
• 4dl
• abs
• abx
• accdb
• accdc
• accde
• adb
• adf
• ckp
• db
• db-journal
• db-shm
• db-wal
• db2
• db3
• dbc
• dbf
• dbs
• dbt
• dbv
• dcb
• dp1
• eco
• edb
• epim
• fcd
• gdb
• mdb
• mdf
• ldf
• myd
• ndf
• nwdb
• nyf
• sqlitedb
• sqlite3
• sqlite

It does not exploit any vulnerability.

Ransomware Routine

This Ransomware avoids encrypting files with the following strings in their file name:

• info.hta
• info.txt
• boot.ini
• bootfont.bin
• ntldr
• ntdetect.com
• io.sys
• config

It avoids encrypting files found in the following folders:

• %Windows%
• %ProgramData%\Microsoft\Windows\Caches

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %ProgramData% is a version of the Program Files folder where any user on a multi-user computer can make changes to programs. This contains application data for all users. This is usually C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit), or C:\Documents and Settings\All Users on Windows Server 2003(32-bit), 2000(32-bit) and XP.)

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

• .id[{Volume Serial ID}-3407].[{BLOCKED}@onionmail.org].Elbie

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

• %Desktop%\info.hta
• %Public%\Desktop\info.hta
• {Drive Letter}\info.hta
  

It leaves text files that serve as ransom notes containing the following text:

• %Desktop%\info.txt
• %Public%\Desktop\info.txt
• {Drive Letter}\info.txt
  

It avoids encrypting files with the following file extensions:

• Elbie
• actin
• DIKE
• Acton
• actor
• Acuff
• FILE
• Acuna
• fullz,
• MMXXII
• duck
• fopra
• unique
• acute
• adage
• make
• Adair
• MLF
• Adame
• banhu
• banjo
• Banks
• Banta
• Barak
• Caleb
• Cales
• Caley
• calix
• Calle
• Calum
• Calvo
• deuce
• Dever
• devil
• Devoe
• Devon
• Devos
• dewar
• eight
• eject
• eking
• Elbie
• elbow
• elder
• phobos
• help
• blend
• bqux
• com
• mamba
• KARLOS
• DDoS
• phoenix
• PLUT
• karma
• bbc
• CAPITAL
• WALLET
• LKS
• tech
• s1g2n3a4l
• MURK
• makop
• ebaka
• jook
• LOGAN
• FIASKO
• GUCCI
• decrypt
• OOH
• Non
• grt
• LIZARD
• FLSCRYPT