Ransom_Petya.R002C0DJV19

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 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 creates the following folders:

• %Application Data%\{{GUID}}

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

Dropping Routine

This Ransomware drops the following files:

• %Application Data%\Microsoft\Windows\IETldCache\container.dat
• %AppDataLocal%Low\Microsoft\Internet Explorer\EmieSiteList\container.dat
• %User Temp%\FXSAPIDebugLogFile.txt
• %Application Data%\Microsoft\Windows\DNTException\container.dat
• %Application Data%\Microsoft\Windows\IEDownloadHistory\container.dat
• %AppDataLocal%Low\Microsoft\Internet Explorer\EmieBrowserModeList\container.dat
• %User Temp%\Microsoft .NET Framework 4.5.2 Setup_20161212_135033207-MSI_netfx_Full_GDR_x64.msi.txt
• %Application Data%\{{GUID}}\RCXBA87.tmp
• %Application Data%\Microsoft\Windows\IECompatUACache\Low\container.dat
• %AppDataLocal%Low\Microsoft\Windows\AppCache\LY14JQYG\container.dat
• %AppDataLocal%Low\Microsoft\Internet Explorer\EmieUserList\container.dat
• %Application Data%\Microsoft\Windows\IECompatCache\container.dat
• %AppDataLocal%Low\Microsoft\Windows\AppCache\container.dat
• %Application Data%\Microsoft\Windows\IECompatCache\Low\container.dat
• %Application Data%\Mozilla\Firefox\Profiles\lj5mikyj.default\SecurityPreloadState.txt
• %Application Data%\Mozilla\Firefox\Profiles\lj5mikyj.default\TRRBlacklist.txt
• %Application Data%\{{GUID}}\RunLegacyCPLElevated.exe
• %Application Data%\Microsoft\Windows\PrivacIE\container.dat
• %Application Data%\Mozilla\Firefox\Profiles\lj5mikyj.default\AlternateServices.txt
• %Application Data%\Microsoft\Windows\IECompatUACache\container.dat

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

Ransomware Routine

This Ransomware renames encrypted files using the following names:

• {encrypted file}.u4w4Hxth

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

• YOUR_FILES_ARE_ENCRYPTED.TXT

This report is generated via an automated analysis system.