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RANSOM_JACKPOT.A

November 01, 2016
 Analysis by: Homer Pacag
 ALIASES:

Win32/Filecoder.JackPot.A (ESET-NOD32); Ransom.JackPot (Malwarebytes)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet


This Trojan 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 a website to send and receive information.

  TECHNICAL DETAILS

File Size:

3,610,624 bytes

Memory Resident:

Yes

Initial Samples Received Date:

28 Oct 2016

Payload:

Connects to URLs/IPs, Displays graphics/image, Encrypts files

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other System Modifications

This Trojan modifies the following file(s):

  • It encrypts files and appends the extension .coin

Backdoor Routine

This Trojan connects to the following websites to send and receive information:

  • http://{BLOCKED}.{BLOCKED}55.93/Insert.php?HWInfo={Computer Name}&Time={Time and Date Stamp}
  • http://{BLOCKED}.{BLOCKED}.55.93/Ask.php?HWInfo={Computer Name}

NOTES:

This ransomware only encrypts files in the following folders:

  • %Desktop%
  • %User Profile%\My Documents
  • %User Profile%\My Pictures
  • %User Profile%\My Music
  • %User Profile%\My Videos

This ransomware locks the computer screen as shown below:

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

12.864.02

FIRST VSAPI PATTERN DATE:

28 Oct 2016

VSAPI OPR PATTERN File:

12.865.00

VSAPI OPR PATTERN Date:

28 Oct 2016

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

[ Learn More ]

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_JACKPOT.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 5

Restore encrypted files from backup.


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