Analysis by: RonJay Kristoffer Caragay
ALIASES:

PWS:Win32/Zbot.gen!GO (Microsoft); Upatre-Enc.a (McAfee); Trojan-PWS.Win32.Zbot (Ikarus);

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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 is a component of other malware.

  TECHNICAL DETAILS

File Size: 672,350 bytes
File Type: Other
Memory Resident: No
Initial Samples Received Date: 08 Sep 2014

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.

Installation

This Trojan is a component of other malware.

NOTES:

This file is a component of TROJ_UPATRE malware family. It is the downloaded packed file that will decompressed by TROJ_UPATRE into another malware.

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 11.136.05
FIRST VSAPI PATTERN DATE: 08 Sep 2014
VSAPI OPR PATTERN File: 11.137.00
VSAPI OPR PATTERN Date: 08 Sep 2014

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 TROJ_UPTRENC.SM. 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.


Did this description help? Tell us how we did.