TSPY_PLIMROST.NM

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.

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:

• %User Profile%\Windows\BthHFSrv.exe

(Note: %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.)

Other System Modifications

This spyware modifies the following file(s):

• %Application Data%\GDIPFONTCACHEV1.DAT

(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.)

It deletes the following files:

• {malware path and file name}:zone.identifier
• %User Profile%\Windows\NcbService.exe:Zone.Identifier
• %User Temp%\N7Fh1SdZWp.ini
• %User Profile%\Windows\BthHFSrv.exe:Zone.Identifier
• %User Temp%\Yjv4f9ZfV3.ini
• %User Temp%\Fo89OBuLPW.ini
• %User Temp%\chZX4cDepD.ini
• %User Temp%\g7Pdvh6b7y.ini
• %User Temp%\8CzYBn4rs7.ini
• %User Temp%\RX6j13xFc9.ini

(Note: %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.. %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.)

It modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
GDIPlus
FontCachePath = "%Application Data%"

(Note: The default value data of the said registry entry is %User Profile%\Local Settings\Application Data.)

HKEY_CURRENT_USER\Software\Microsoft\
Windows NT\CurrentVersion\Windows
Load = "%User Profile%\Windows\NcbService.exe"

Dropping Routine

This spyware drops the following files:

• %User Profile%\Windows\NcbService.exe
• %User Temp%\HJEqeFbUei.ini
• %User Temp%\6703PjovEF.ini
• %User Temp%\qac8TgTJsz.ini
• %User Temp%\uARzy2xALO.ini
• %User Temp%\sc3Dyq2YQT.ini
• %User Temp%\LdnffgoMVd.ini
• %User Temp%\aMDbD1tquv.ini

(Note: %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.. %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.)

Other Details

This spyware connects to the following possibly malicious URL:

• http://sdutylinkfologs.{BLOCKED}2.com/index.php?{random characters}
• {BLOCKED}.160.189

This report is generated via an automated analysis system.