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PUA_DRIVERDOC.GB

August 12, 2016
 Analysis by: Pearl Charlaine Espejo
 ALIASES:

PUA.Driverdoc (Symantec); a variant of Win32/Systweak.H (ESET-NOD32);

 PLATFORM:

Windows

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

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This potentially unwanted application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be manually installed by a user.

  TECHNICAL DETAILS

File Size:

3,441,528 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

14 Jul 2016

Arrival Details

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

It may be manually installed by a user.

Installation

This potentially unwanted application drops the following files:

  • %Application Data%\Solvusoft\solvusoftdd\DriverDoc\ininotfound0.ini
  • %Desktop%\DriverDoc.lnk
  • %Program Files%\DriverDoc\is-{random characters}.tmp
  • %Program Files%\DriverDoc\unins000.dat
  • %Program Files%\DriverDoc\unins000.msg
  • %Program Files%\DriverDoc\updater\amd64Helper\is-{random characters}.tmp
  • %Program Files%\DriverDoc\updater\extract\is-{random characters}.tmp
  • %Start Menu%\Programs\DriverDoc\DriverDoc.lnk
  • %Start Menu%\Programs\DriverDoc\Register DriverDoc.lnk
  • %Start Menu%\Programs\DriverDoc\Uninstall DriverDoc.lnk
  • %User Temp%\is-{random characters}.tmp\{malware filename}.tmp
  • %User Temp%\is-{random characters}.tmp\_isetup\_shfoldr.dll
  • %Windows%\Tasks\DriverDoc_UPDATES.job

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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.. %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in 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.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu 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.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

Other System Modifications

This potentially unwanted application adds the following registry keys:

HKEY_CURRENT_USER\Software\Solvusoft

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd\DriverDoc

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd\DriverDoc\LANG

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc\LANG

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
utm_source = "solvusoft"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
utm_campaign = "default"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
utm_medium = "newbuild"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
BuyNowURL = "http://www.solvusoft.com/{LANG}/driverdoc/purchase/?ver={value}&utm_source=solvusoft&utm_campaign=default&utm_medium=newbuild"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
RenewNowURL = "http://www.solvusoft.com/{LANG}/driverdoc/renew/?ver={value}&utm_source=solvusoft&utm_campaign=default&utm_medium=newbuild"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
CompanyWebsiteURL = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
HelpURLINT = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
HelpURLDE = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
SupportURL = "https://support.solvusoft.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
MaxFixLimit = "50"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc\LANG
LangID = "0"

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd\DriverDoc
StartAutoScanPMUI = "1"

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd\DriverDoc
StartAutoScanOnLaunch = "0"

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd\DriverDoc
StartAutoTutorial = "1"

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd\DriverDoc
TrialType = "0"

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd\DriverDoc\LANG
LangCode = "en"

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd\DriverDoc\LANG
LangID = "0"

HKEY_CURRENT_USER\Software\Solvusoft\
Solvusoftdd\DriverDoc
InstalledPath = "%Program Files%\DriverDoc"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
Solvusoftdd\DriverDoc
InstalledPath = "%Program Files%\DriverDoc"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
Inno Setup: Setup Version = "5.5.1 (u)"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
Inno Setup: App Path = "%Program Files%\DriverDoc"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
InstallLocation = "%Program Files%\DriverDoc\"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
Inno Setup: Icon Group = "DriverDoc"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
Inno Setup: User = "{username}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
Inno Setup: Language = "en"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
DisplayName = "DriverDoc"

DisplayIcon
DisplayIcon = "%Program Files%\DriverDoc\Solvusoftdd.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
UninstallString = ""%Program Files%\DriverDoc\unins000.exe""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
QuietUninstallString = ""%Program Files%\DriverDoc\unins000.exe" /SILENT"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
DisplayVersion = "{version}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
Publisher = "Solvusoft Corporation"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
NoRepair = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
InstallDate = "{Installation Date}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
MajorVersion = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
MinorVersion = "52"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
DriverDoc_is1
UninstallString = ""%Program Files%\DriverDoc\unins000.exe" /silent"

Other Details

This potentially unwanted application connects to the following possibly malicious URL:

  • http://www.{BLOCKED}oft.com/en/driverdoc/install/?ver={value}&utm_term=Setup&page=install&utm_source=solvusoft&utm_campaign=default&utm_medium=newbuild
  • http://static.{BLOCKED}oft.com/{data}
  • https://seal.{BLOCKED}gn.com/getseal?host_name=www.solvusoft.com&size=S&use_flash=NO&use_transparent=YES&lang=en
  • http://www.{BLOCKED}agmanager.com/gtm.js?id={value}

  SOLUTION

Minimum Scan Engine:

9.800

SSAPI PATTERN File:

1.757.00

SSAPI PATTERN Date:

11 Aug 2016

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

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_CURRENT_USER\Software
    • Solvusoft
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
    • DriverDoc_is1
  • In HKEY_LOCAL_MACHINE\SOFTWARE
    • Solvusoft

Step 4

Search and delete this folder

[ 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.
  • %Application Data%\Solvusoft
  • %Program Files%\DriverDoc
  • %Start Menu%\Programs\DriverDoc
  • %User Temp%\is-{random characters}.tmp

Step 5

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.
  • %Desktop%\DriverDoc.lnk
  • %Windows%\Tasks\DriverDoc_UPDATES.job

Step 6

Scan your computer with your Trend Micro product to delete files detected as PUA_DRIVERDOC.GB. 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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