RANSOM_FCPSCARE.A

August 08, 2017
 Analysis by: Martin Xavier Co
 ALIASES:

W32/Cossta.AKDP!tr (Fortinet); Trojan.Win32.Cossta.akdp (Kaspersky)

 PLATFORM:

Windows

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

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet

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.

  TECHNICAL DETAILS

File Size:

1,003,008 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

31 Jul 2017

Payload:

Drops files, Displays graphics/image, Displays message/message boxes, Locks screen

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%\{random characters}.bat
  • %AppDataLocal%\{random characters}.{random characters}\Chinese_national_flag.png
  • %AppDataLocal%\{random characters}.{random characters}\DoNotKillMe.exe
  • %AppDataLocal%\{random characters}.{random characters}\FCP_Decryptor.exe
  • %AppDataLocal%\{random characters}.{random characters}\FCPProtect.exe
  • %AppDataLocal%\{random characters}.{random characters}\READ_ME_HELP_ME.png
  • %AppDataLocal%\{random characters}.{random characters}\READ_ME_HELP_ME.txt
  • %System Root%\FCP_TEMP\temp.txt
  • %System Root%\FCPRAMSOMWARE\shutdown.bat
  • %System Root%\FCPRAMSOMWARE\FCP.exe
  • %System Root%\FCPRAMSOMWARE\FCP_Decryptor.exe
  • %System Root%\FCPRAMSOMWARE\READ_ME_HELP_ME.png
  • %System Root%\FCPRAMSOMWARE\READ_ME_HELP_ME.txt
  • %System Root%\FCPRAMSOMWARE\Chinese_national_flag.png
  • %System Root%\FCPRAMSOMWARE\FCPProtect.exe
  • %System Root%\FCPRAMSOMWARE\DoNotKillMe.exe
  • %Desktop%\FCP_Decryptor.exe
  • %Desktop%\READ_ME_HELP_ME.png
  • %Desktop%\READ_ME_HELP_ME.txt
  • %Desktop%\Chinese_national_flag.png
  • %Startup%\FCP.exe

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

NOTES:

This ransomware does not encrypt any files in the computer. It instead locks the screen and displays the following:

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.566.08

FIRST VSAPI PATTERN DATE:

31 Jul 2017

VSAPI OPR PATTERN File:

13.567.00

VSAPI OPR PATTERN Date:

01 Aug 2017

Step 1

Scan your computer with your Trend Micro product to delete files detected as RANSOM_FCPSCARE.A. 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 2

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.  
  • %User Temp%\{random characters}.bat
  • %AppDataLocal%\{random characters}.{random characters}\Chinese_national_flag.png
  • %AppDataLocal%\{random characters}.{random characters}\DoNotKillMe.exe
  • %AppDataLocal%\{random characters}.{random characters}\FCP_Decryptor.exe
  • %AppDataLocal%\{random characters}.{random characters}\FCPProtect.exe
  • %AppDataLocal%\{random characters}.{random characters}\READ_ME_HELP_ME.png
  • %AppDataLocal%\{random characters}.{random characters}\READ_ME_HELP_ME.txt
  • %System Root%\FCP_TEMP\temp.txt
  • %System Root%\FCPRAMSOMWARE\shutdown.bat
  • %System Root%\FCPRAMSOMWARE\FCP.exe
  • %System Root%\FCPRAMSOMWARE\FCP_Decryptor.exe
  • %System Root%\FCPRAMSOMWARE\READ_ME_HELP_ME.png
  • %System Root%\FCPRAMSOMWARE\READ_ME_HELP_ME.txt
  • %System Root%\FCPRAMSOMWARE\Chinese_national_flag.png
  • %System Root%\FCPRAMSOMWARE\FCPProtect.exe
  • %System Root%\FCPRAMSOMWARE\DoNotKillMe.exe
  • %Desktop%\FCP_Decryptor.exe
  • %Desktop%\READ_ME_HELP_ME.png
  • %Desktop%\READ_ME_HELP_ME.txt
  • %Desktop%\Chinese_national_flag.png
  • %Startup%\FCP.exe

Step 3

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 4

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.


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