arrow_back
search
close

TSPY_DYRE.VCFP

April 04, 2015
 Analysis by: Sammy Chua
 ALIASES:

Infostealer.Dyranges (Symantec); Trojan.Win32.Agent.ietz (Kaspersky); Artemis!E2F5DCD966E2 (McAfee)

 PLATFORM:

Windows

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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.

It deletes the initially executed copy of itself.

  TECHNICAL DETAILS

File Size:

593,408 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

02 Apr 2015

Payload:

Connects to URLs/IPs, Steals information

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.

Installation

This spyware drops the following copies of itself into the affected system and executes them:

  • %Windows%\{random filename}.exe (for Windows XP and lower)
  • %AppDataLocal%\{random filename}.exe (for Windows Vista and higher)

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It drops the following files:

  • %AppDataLocal%\ne9bzef6m8.dlll (for Windows Vista and higher)
  • %System%\config\systemprofile\Application Data\ne9bzef6m8.dll (for Windows XP and lower)

(Note: %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

Other System Modifications

This spyware adds the following registry keys:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\googleupdate (for Windows XP and lower)

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\googleupdate
ImagePath = "%Windows%\{random filename}.exe" (for Windows XP and lower)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
GoogleUpdate = "%AppDataLocal%\{random filename}.exe" (for Windows Vista and higher)

Other Details

This spyware connects to the following possibly malicious URL:

  • {BLOCKED}.{BLOCKED}.228.195:443
  • {BLOCKED}.{BLOCKED}.148.1:443
  • {BLOCKED}.{BLOCKED}.160.107:443
  • {BLOCKED}.{BLOCKED}.55.58:4443
  • {BLOCKED}.{BLOCKED}.149.4:4443
  • {BLOCKED}.{BLOCKED}.49.162:443
  • {BLOCKED}.{BLOCKED}.103.78:443
  • {BLOCKED}.{BLOCKED}.191.70:443
  • {BLOCKED}.{BLOCKED}.190.26:443
  • {BLOCKED}.{BLOCKED}.189.92:443
  • {BLOCKED}.{BLOCKED}.191.217:443
  • {BLOCKED}.{BLOCKED}.181.148:4443
  • {BLOCKED}.{BLOCKED}.12.49:443
  • {BLOCKED}.{BLOCKED}.191.222:443
  • {BLOCKED}.{BLOCKED}.19.156:443
  • {BLOCKED}.{BLOCKED}.204.113:443
  • {BLOCKED}.{BLOCKED}.191.217:443
  • {BLOCKED}.{BLOCKED}.88.150:443
  • {BLOCKED}.{BLOCKED}.249.122:443
  • {BLOCKED}.{BLOCKED}.175.236:443
  • {BLOCKED}.{BLOCKED}.133.237:443
  • {BLOCKED}.{BLOCKED}.104.250:443
  • {BLOCKED}.{BLOCKED}.54.107:443
  • {BLOCKED}.{BLOCKED}.69.144:443
  • {BLOCKED}.{BLOCKED}.53.78:443
  • {BLOCKED}.{BLOCKED}.177.211:4443
  • {BLOCKED}.{BLOCKED}.38.6:4443
  • {BLOCKED}.{BLOCKED}.69.166:4443
  • {BLOCKED}.{BLOCKED}.69.167:4443
  • {BLOCKED}.{BLOCKED}.69.130:443
  • {BLOCKED}.{BLOCKED}.69.132:443
  • {BLOCKED}.{BLOCKED}.69.142:4443
  • {BLOCKED}.{BLOCKED}.90.230:4443
  • {BLOCKED}.{BLOCKED}.14.189:443
  • {BLOCKED}.{BLOCKED}.132.69:443
  • {BLOCKED}.{BLOCKED}1.139.42:4443
  • {BLOCKED}.{BLOCKED}.73.59:4443
  • {BLOCKED}.{BLOCKED}.187.116:443
  • {BLOCKED}.{BLOCKED}.48.173:443
  • {BLOCKED}.{BLOCKED}.213.153:443
  • {BLOCKED}.{BLOCKED}.191.218:443
  • {BLOCKED}.{BLOCKED}.149.39:4443
  • {BLOCKED}.{BLOCKED}.206.42:4443
  • {BLOCKED}.{BLOCKED}.142.227:443
  • {BLOCKED}.{BLOCKED}.69.138:4443
  • {BLOCKED}.{BLOCKED}.48.121:443
  • {BLOCKED}.{BLOCKED}.229.60:443
  • {BLOCKED}.{BLOCKED}.48.121:443
  • {BLOCKED}.{BLOCKED}.48.96:443

It deletes the initially executed copy of itself

  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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Scan your computer with your Trend Micro product and note files detected as TSPY_DYRE.VCFP

Step 4

Restart in Safe Mode

[ Learn More ]

Step 5

Delete this registry key

[ 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_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
    • googleupdate (for Windows XP and lower)

Step 6

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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • GoogleUpdate = "%AppDataLocal%\{random filename}.exe"  (for Windows Vista and higher)

Step 7

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %AppDataLocal%\ne9bzef6m8.dll (for Windows Vista and higher)
  • %System%\config\systemprofile\Application Data\ne9bzef6m8.dll (for Windows XP and lower)

Step 8

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