Analysis by: Sammy Chua
ALIASES:

Backdoor:Win32/Bedep.A (Microsoft); Trojan.Asprox.B (Symantec); Trojan.Win32.Crypt (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 as a file that exports functions used by other malware. It may be dropped by other malware.

It is a component of other malware.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size: 287,845 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 13 Jan 2015

Arrival Details

This Trojan may arrive as a file that exports functions used by other malware.

It may be dropped by other malware.

Installation

This Trojan is a component of other malware.

Other Details

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

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 11.398.05
FIRST VSAPI PATTERN DATE: 08 Jan 2015
VSAPI OPR PATTERN File: 11.399.00
VSAPI OPR PATTERN Date: 09 Jan 2015

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 and note files detected as TROJ_BEDEP.ACD

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete files detected as TROJ_BEDEP.ACD

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

Step 5

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