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WORM_ENCMARUE.HA

October 01, 2013
 Analysis by: Andrei Castillo
 ALIASES:

W32/Injector.JEJN!tr(FORTINET), Trojan-Dropper.Win32.Injector(IKARUS), Trojan-Dropper.Win32.Injector.jejn(KASPERSKY)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW


This worm 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 dropped by other malware.

  TECHNICAL DETAILS

File Size:

270,336 bytes

File Type:

Other

Memory Resident:

Yes

Initial Samples Received Date:

27 Sep 2013

Arrival Details

This worm 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 dropped by the following malware:

  • TROJ_GAMARUE.HO

NOTES:

This Trojan is an encrypted worm. It is downloaded, decrypted, and executed by TROJ_GAMARUE.HO.

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

10.304.06

FIRST VSAPI PATTERN DATE:

27 Sep 2013

VSAPI OPR PATTERN File:

10.305.00

VSAPI OPR PATTERN Date:

28 Sep 2013

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

Remove the malware/grayware file that dropped/downloaded WORM_ENCMARUE.HA

     
    • TROJ_GAMARUE.HO

Step 3

Remove malware/grayware files dropped/downloaded by WORM_ENCMARUE.HA

    • WORM_GAMARUE.HA

Step 4

Scan your computer with your Trend Micro product to delete files detected as WORM_ENCMARUE.HA. 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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