TROJ_AGENT.QPK

May 10, 2013
 ALIASES:

Trojan:Win32/Comproc!rts (Microsoft); Generic Downloader.x (McAfee); Hacktool.Rootkit (Symantec); Trojan-Downloader.Win32.Agent.abqa (Kaspersky); WaveRevenue-McBoo (Sunbelt); Trojan horse Agent.USV (AVG)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan 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:

52,736 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

10 May 2013

Arrival Details

This Trojan 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 drops the following copies of itself into the affected system:

  • %User Temp%\uninstall.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

Other System Modifications

This Trojan deletes the following files:

  • %Program Files%\SpeedRunner\SpeedRunner.exe
  • %Program Files%\SpeedRunner\config.cfg
  • %Program Files%\SpeedRunner\SRUninstall.exe
  • %Program Files%\SpeedRunner\ide21201.vxd
  • %Program Files%\SpeedRunner\License.lnk
  • %Program Files%\SpeedRunner\msvcp60.dll
  • %User Profile%\SpeedRunner\SpeedRunner.exe
  • %User Profile%\SpeedRunner\config.cfg
  • %User Profile%\SpeedRunner\SRUninstall.exe
  • %User Profile%\SpeedRunner\ide21201.vxd
  • %User Profile%\SpeedRunner\License.lnk
  • %User Profile%\SpeedRunner\msvcp60.dll

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

It deletes the following folders:

  • %Program Files%\SpeedRunner
  • %User Profile%\Application Data\SpeedRunner

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion
nrunsr = "1"

It deletes the following registry keys:

HKEY_CURRENT_USER\Software\Classes\
CLSID\{CAFB2180-BA09-11DC-95FF-0800200C9A66}

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Explorer Bars\{CAFB2180-BA09-11DC-95FF-0800200C9A66}

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://www.{BLOCKED}runner.comunin.php

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.300

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

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
    • nrunsr = "1"

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_AGENT.QPK. 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.

Step 4

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • %Program Files%\SpeedRunner\SpeedRunner.exe
  • %Program Files%\SpeedRunner\config.cfg
  • %Program Files%\SpeedRunner\SRUninstall.exe
  • %Program Files%\SpeedRunner\ide21201.vxd
  • %Program Files%\SpeedRunner\License.lnk
  • %Program Files%\SpeedRunner\msvcp60.dll
  • %User Profile%\SpeedRunner\SpeedRunner.exe
  • %User Profile%\SpeedRunner\config.cfg
  • %User Profile%\SpeedRunner\SRUninstall.exe
  • %User Profile%\SpeedRunner\ide21201.vxd
  • %User Profile%\SpeedRunner\License.lnk
  • %User Profile%\SpeedRunner\msvcp60.dll

Step 5

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

  • In HKEY_CURRENT_USER\Software\Classes\CLSID
    • {CAFB2180-BA09-11DC-95FF-0800200C9A66}
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Explorer Bars
    • {CAFB2180-BA09-11DC-95FF-0800200C9A66}


Did this description help? Tell us how we did.