Threat Encyclopedia

TROJ_EMDIVI.ZJCH-A

Publish date: August 14, 2015

ANALYSIS BY

RonJay Kristoffer Caragay


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:

Downloaded from the Internet, Dropped by other malware


This Trojan may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It does not have any propagation routine.

It requires its main component to successfully perform its intended routine. It is used to load and execute a file.

TECHNICAL DETAILS

File Size:

61,952 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

24 Jul 2015

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

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

Propagation

This Trojan does not have any propagation routine.

Other Details

This Trojan requires its main component to successfully perform its intended routine.

It is used to load and execute the following file:

NOTES:

It requires an specific User SID to decrypt and execute the following file:

  • {malware path}\iusb3mon.dat

SOLUTION

Minimum Scan Engine:

9.750

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 dropped/downloaded by TROJ_EMDIVI.ZJCH-A. (Note: Please skip this step if the threat(s) listed below have already been removed.)

     
    • BKDR_EMDIVI.ZJCH-A

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_EMDIVI.ZJCH-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.


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