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HTML_RANSOM.JNP

October 30, 2012
 Analysis by: Rhena Inocencio
 ALIASES:

Trojan:HTML/Weelsof.A (Microsoft), HTML/Ransom.B trojan (ESET)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan is an HTML version of a Ransomware malware.

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 may be hosted on a website and run when a user accesses the said website.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

HTML, HTM

Initial Samples Received Date:

21 Aug 2012

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.

It may be hosted on a website and run when a user accesses the said website.

NOTES:

This Trojan is an HTML version of a Ransomware malware.

It locks the user's computer, which prevents the user to gain control of the computer.

It demands the users to pay an amount in order to reverse the effect.

It displays the following ransom message:

IP: {User's IP address}
Location: Germany
Language: {English or Deutch}
Unlock computer via Ukash
{€50 or €100} value
[Enter your Ukash voucher]
Code is not valid
1 2 3 4 5 6 7 8 9 0 Delete
For security reasons enter code using virtual keyboard
SUBMIT CODE
Your computer is locked
Your computer has been locked by the automated information control system (AICS)

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.338.04

FIRST VSAPI PATTERN DATE:

21 Aug 2012

VSAPI OPR PATTERN File:

9.339.00

VSAPI OPR PATTERN Date:

22 Aug 2012

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Scan your computer with your Trend Micro product and note files detected as HTML_RANSOM.JNP

Step 4

Search and delete the file detected as HTML_RANSOM.JNP

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.

Step 5

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


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