Analysis by: Cris Nowell Pantanilla
ALIASES:

Win32/Filecoder.Crysis trojan (NOD32)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware.

This is the Trend Micro detection for files that exhibit certain behaviors.

  TECHNICAL DETAILS

File Size: 13,797 bytes
File Type: HTML, HTM
Memory Resident: No
Initial Samples Received Date: 17 Apr 2017

Arrival Details

This Trojan may be dropped by the following malware:

  • Ransom_CRYSIS

Other Details

This is the Trend Micro detection for:

  • Ransom notes dropped by ransomware on affected systems.

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 13.346.06
FIRST VSAPI PATTERN DATE: 17 Apr 2017
VSAPI OPR PATTERN File: 13.347.00
VSAPI OPR PATTERN Date: 18 Apr 2017

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

Scan your computer with your Trend Micro product to delete files detected as HTML_RANSOMNOTE.CRZE. 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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