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TSPY_MIRYAGO.B

November 06, 2012
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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

  TECHNICAL DETAILS

File Size:

163840 bytes

File Type:

DLL

Memory Resident:

No

Arrival Details

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

Other System Modifications

This spyware adds the following registry entries:

HKEY_CLASSES_ROOT\Briefcase.Server
DefaultName = "0"

HKEY_CLASSES_ROOT\Briefcase.Server
FriendlyTypeName = "0"

HKEY_CLASSES_ROOT\Briefcase.Server
ar = "{}"

HKEY_LOCAL_MACHINE\SOFTWARE\Briefcase.Server
DefaultName = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Briefcase.Server
FriendlyTypeName = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Briefcase.Server
ar = "{}"

Other Details

This spyware connects to the following possibly malicious URL:

  • www.{BLOCKED}w.com

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.502.03

FIRST VSAPI PATTERN DATE:

02 Nov 2012

VSAPI OPR PATTERN File:

9.503.00

VSAPI OPR PATTERN Date:

03 Nov 2012

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • In HKEY_CLASSES_ROOT\Briefcase.Server
    • DefaultName = "0"
  • In HKEY_CLASSES_ROOT\Briefcase.Server
    • FriendlyTypeName = "0"
  • In HKEY_CLASSES_ROOT\Briefcase.Server
    • ar = "{}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Briefcase.Server
    • DefaultName = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Briefcase.Server
    • FriendlyTypeName = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Briefcase.Server
    • ar = "{}"

Step 3

Scan your computer with your Trend Micro product to delete files detected as TSPY_MIRYAGO.B. 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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