MD5: 4e3b886ef4ca0b1b073d9e0f168226d3
SHA1: e92a141228f20ac953cc1d5cb4f0890e6ba417fc
SHA256: b40ad45dda7aefe3e74376aff69640469dcbde431a6204d1ea431c96893ec5ec
SSDeep: 24576:WRmJkcoQricOIQxiZY1iahNtjmtUwqzX2BoRCcFY2Ywxy21cFe:zJZoQrbTFZY1iahNt8K6OUcFuwXcFe
Size: 1184034 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2012-01-29 23:32:28
Analyzed on: WindowsXP SP3 32-bit

Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

schtasks.exe:1920
schtasks.exe:508
schtasks.exe:1448

The Trojan injects its code into the following process(es):

%original file name%.exe:1524

Mutexes

The following mutexes were created/opened:
No objects were found.

File activity

The process %original file name%.exe:1524 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\4e3b886ef4ca0b1b073d9e0f168226d3.lnk (533 bytes)
C:\AppData.ini (481488 bytes)
C:\libmysql.dll (268248 bytes)
C:\AppInfo.ini (1209 bytes)
C:\ActiveX.ini (392 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OHYRGXIJ\libmysql[1].dll (1020410 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (3 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\89AJKDYV\7zip32[1].dll (114345 bytes)
C:\7zip32.dll (30724 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (1176 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OX6J4PMZ\7zip32[1].dll (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OX6J4PMZ\libmysql[1].dll (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (0 bytes)

Registry activity

The process %original file name%.exe:1524 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 28 00 00 00 01 00 00 00 00 00 00 00"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Start Menu" = "%Documents and Settings%\All Users\Start Menu"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"GlobalUserOffline" = "0"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"CommonMusic" = "%Documents and Settings%\All Users\Documents\My Music"
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

"Desktop" = "%Documents and Settings%\%current user%\Desktop"

[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"My Pictures" = "%Documents and Settings%\%current user%\My Documents\My Pictures"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKLM\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3]
"SecuritySafe" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Start Menu" = "%Documents and Settings%\%current user%\Start Menu"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"CommonVideo" = "%Documents and Settings%\All Users\Documents\My Videos"
"CommonPictures" = "%Documents and Settings%\All Users\Documents\My Pictures"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B4 6C 6B B6 B7 1B 39 89 B1 73 66 B8 78 47 47 34"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"

The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"

The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

"ProxyBypass" = "1"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"RegAiD" = "C:\%original file name%.exe"

The Trojan deletes the following value(s) in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyOverride"
"ProxyServer"

"AutoConfigURL"

The Trojan disables automatic startup of the application by deleting the following autorun value:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"BonUpdate.exe"

"GridMember"

"Pinomate"

"GameMon.exe"

"QAutoUP.exe"

The process schtasks.exe:1920 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "78 A6 3E 7E 4A 25 04 17 B1 05 93 BF 56 45 2A D7"

The process schtasks.exe:508 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C1 B8 CC B3 28 F1 65 EE C2 4F 4F AD F1 9B DF 97"

The process schtasks.exe:1448 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D1 82 62 6A ED 1C F7 F7 72 79 A8 B8 3F 18 2B 24"

Dropped PE files

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

VersionInfo

Company Name:
Product Name:
Product Version: 3.3.8.1
Legal Copyright: Copyright ?2012-2015 AiDSoftware Corporation, All Rights reserved.
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 4.9.2.2018
File Description: ?????4
Comments: ????? ????? ?? ? ?? ??? ????
Language: Russian (Russia)

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL	IP
hxxp://211.230.103.120/regaid/7zip32.dll
hxxp://www.regaid.co.kr/regaid/7zip32.dll
regaid.co.kr	211.230.103.120

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET POLICY Autoit Windows Automation tool User-Agent in HTTP Request - Possibly Hostile
ET TROJAN VMProtect Packed Binary Inbound via HTTP - Likely Hostile

Traffic

GET /regaid/7zip32.dll HTTP/1.1

User-Agent: AutoIt

Host: VVV.regaid.co.kr

Cache-Control: no-cache

HTTP/1.1 200 OK

Date: Tue, 23 Jun 2015 03:48:35 GMT

Server: Apache

Last-Modified: Mon, 22 Jun 2015 14:23:33 GMT

ETag: "3ac00-5191c04c21aa6"

Accept-Ranges: bytes

Content-Length: 240640

Content-Type: application/x-msdownload
MZ......................@.............................................
..!..L.!This program cannot be run in DOS mode....$.........t.........
....................l...........................#...l.G...............
..i...(...............Rich............PE..L......D...........!........
. ... .......0........................................................
..................t...t.......l.......................................
......................................................................
......UPX0..... ..............................UPX1.........0..........
[email protected].... ..........................@.................
......................................................................
......................................................................
......................................................................
......................................................................
......................................................................
.......2.00.UPX!.....>m4.'s.............&.......V.t$...~.j ........
.2Nu.^...U.......E.S.].Ju.W s.3. .t.Ht.Hu......w..... ........}B....3.
.....s .V..$_^[]......\0.W....... SWd....~Z.V.p..M.j...F..n...v..e..".
.E)[email protected].....^.M._[d.........
.3.j....m.N...A.A.t....^..q.....Y.2.3.9_.~/^GF4............>.u.....
..F..QP0.e.C;Z|.?.^.^.y1U{.3.9..4.n.~.j-.E;"|.{].o..|.D$..8.u..x...j.X
...o..R.h(Sf>@t...foh.h...P......}.....V.....u?B.PV...eh.H.h.a..,..
.Z..PWp....t.$P...5E.C.J.U..^~.......8B...y.SVW.M.......H..X.:..A.
<<< skipped >>>

GET /regaid/7zip32.dll HTTP/1.1

User-Agent: AutoIt

Host: VVV.regaid.co.kr

Cache-Control: no-cache

HTTP/1.1 200 OK

Date: Tue, 23 Jun 2015 03:48:36 GMT

Server: Apache

Last-Modified: Mon, 22 Jun 2015 14:23:33 GMT

ETag: "3ac00-5191c04c21aa6"

Accept-Ranges: bytes

Content-Length: 240640

Content-Type: application/x-msdownload
MZ......................@.............................................
..!..L.!This program cannot be run in DOS mode....$.........t.........
....................l...........................#...l.G...............
..i...(...............Rich............PE..L......D...........!........
. ... .......0........................................................
..................t...t.......l.......................................
......................................................................
......UPX0..... ..............................UPX1.........0..........
[email protected].... ..........................@.................
......................................................................
......................................................................
......................................................................
......................................................................
......................................................................
.......2.00.UPX!.....>m4.'s.............&.......V.t$...~.j ........
.2Nu.^...U.......E.S.].Ju.W s.3. .t.Ht.Hu......w..... ........}B....3.
.....s .V..$_^[]......\0.W....... SWd....~Z.V.p..M.j...F..n...v..e..".
.E)[email protected].....^.M._[d.........
.3.j....m.N...A.A.t....^..q.....Y.2.3.9_.~/^GF4............>.u.....
..F..QP0.e.C;Z|.?.^.^.y1U{.3.9..4.n.~.j-.E;"|.{].o..|.D$..8.u..x...j.X
...o..R.h(Sf>@t...foh.h...P......}.....V.....u?B.PV...eh.H.h.a..,..
.Z..PWp....t.$P...5E.C.J.U..^~.......8B...y.SVW.M.......H..X.:..A.
<<< skipped >>>

The Trojan connects to the servers at the folowing location(s):

.text

`.rdata

@.data

.rsrc

s%j.Zf

8crtsu

:crts

crts

GetProcessWindowStation

operator

This is a compiled AutoIt script. AV researchers please email [email protected] for support.

uxtheme.dll

kernel32.dll

operand of unlimited repeat could match the empty string

POSIX named classes are supported only within a class

erroffset passed as NULL

POSIX collating elements are not supported

this version of PCRE is not compiled with PCRE_UTF8 support

PCRE does not support \L, \l, \N{name}, \U, or \u

support for \P, \p, and \X has not been compiled

this version of PCRE is not compiled with PCRE_UCP support

ICMP.DLL

advapi32.dll

RegDeleteKeyExW

Error text not found (please report)

WSOCK32.dll

VERSION.dll

WINMM.dll

COMCTL32.dll

MPR.dll

InternetCrackUrlW

HttpQueryInfoW

HttpOpenRequestW

HttpSendRequestW

FtpOpenFileW

FtpGetFileSize

InternetOpenUrlW

WININET.dll

PSAPI.DLL

USERENV.dll

GetProcessHeap

CreatePipe

GetWindowsDirectoryW

KERNEL32.dll

OpenWindowStationW

SetProcessWindowStation

CloseWindowStation

MapVirtualKeyW

EnumChildWindows

EnumWindows

VkKeyScanW

GetKeyState

GetKeyboardState

SetKeyboardState

GetAsyncKeyState

keybd_event

EnumThreadWindows

ExitWindowsEx

UnregisterHotKey

RegisterHotKey

GetKeyboardLayoutNameW

USER32.dll

SetViewportOrgEx

GDI32.dll

COMDLG32.dll

RegOpenKeyExW

RegCloseKey

RegCreateKeyExW

RegEnumKeyExW

RegDeleteKeyW

ADVAPI32.dll

ShellExecuteW

SHFileOperationW

ShellExecuteExW

SHELL32.dll

ole32.dll

OLEAUT32.dll

GetCPInfo

zcÁ

<requestedExecutionLevel level="asInvoker" uiAccess="false"></requestedExecutionLevel>

<assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" language="*" processorArchitecture="*" publicKeyToken="6595b64144ccf1df"></assemblyIdentity>

mscoree.dll

nKERNEL32.DLL

- Attempt to initialize the CRT more than once.

- CRT not initialized

- floating point support not loaded

WUSER32.DLL

>>>AUTOIT NO CMDEXECUTE<<<

CMDLINERAW

CMDLINE

/AutoIt3ExecuteLine

/AutoIt3ExecuteScript

%s (%d) : ==> %s.:

Line %d:

Line %d (File "%s"):

%s (%d) : ==> %s:

AutoIt script files (*.au3, *.a3x)

*.au3;*.a3x

All files (*.*)

#NoAutoIt3Execute

APPSKEY

04090000

%u.%u.%u.%u

0.0.0.0

Mddddd

%s (%d) : ==> %s:

UDPSTARTUP

UDPSHUTDOWN

UDPSEND

UDPRECV

UDPOPEN

UDPCLOSESOCKET

UDPBIND

TRAYGETMSG

TCPSTARTUP

TCPSHUTDOWN

TCPSEND

TCPRECV

TCPNAMETOIP

TCPLISTEN

TCPCONNECT

TCPCLOSESOCKET

TCPACCEPT

SHELLEXECUTEWAIT

SHELLEXECUTE

REGENUMKEY

MSGBOX

ISKEYWORD

HTTPSETUSERAGENT

HTTPSETPROXY

HOTKEYSET

GUIREGISTERMSG

GUIGETMSG

GUICTRLSENDMSG

GUICTRLRECVMSG

FTPSETPROXY

\??\%s

GUI_RUNDEFMSG

SendKeyDelay

SendKeyDownDelay

TCPTimeout

AUTOITCALLVARIABLE%d

255.255.255.255

Keyword

AutoIt.Error

Null Object assignment in FOR..IN loop

Incorrect Object type in FOR..IN loop

HOTKEYPRESSED

AUTOITEXE

WINDOWSDIR

3, 3, 8, 1

HKEY_LOCAL_MACHINE

HKEY_CLASSES_ROOT

HKEY_CURRENT_CONFIG

HKEY_CURRENT_USER

HKEY_USERS

%d/d/d

c:\%original file name%.exe

:C:\%original file name%.exe

AutoIt supports the __stdcall (WINAPI) and __cdecl calling conventions. The __stdcall (WINAPI) convention is used by default but __cdecl can be used instead. See the DllCall() documentation for details on changing the calling convention.

Missing operator in expression."Unbalanced brackets in expression.

Error parsing function call.0Incorrect number of parameters in function call.'"ReDim" used without an array variable.>Illegal text at the end of statement (one statement per line).1"If" statement has no matching "EndIf" statement.1"Else" statement with no matching "If" statement.2"EndIf" statement with no matching "If" statement.7Too many "Else" statements for matching "If" statement.3"While" statement has no matching "Wend" statement.4"Wend" statement with no matching "While" statement.%Variable used without being declared.XArray variable has incorrect number of subscripts or subscript dimension range exceeded.)Array variable subscript badly formatted.'Subscript used with non-Array variable.&Too many subscripts used for an array.0Missing subscript dimensions in "Dim" statement.NNo variable given for "Dim", "Local", "Global", "Struct" or "Const" statement.0Expected a "=" operator in assignment statement.*Invalid keyword at the start of this line.

Invalid element in a DllStruct.*Unknown option or bad parameter specified.&Unable to load the internet libraries./"Struct" statement has no matching "EndStruct".HUnable to open file, the maximum number of open files has been exceeded.K"ContinueLoop" statement with no matching "While", "Do" or "For" statement.

Invalid file filter given.*Expected a variable in user function call.1"Do" statement has no matching "Until" statement.2"Until" statement with no matching "Do" statement.#"For" statement is badly formatted.2"Next" statement with no matching "For" statement.N"ExitLoop/ContinueLoop" statements only valid from inside a For/Do/While loop.1"For" statement has no matching "Next" statement.@"Case" statement with no matching "Select"or "Switch" statement.:"EndSelect" statement with no matching "Select" statement.ORecursion level has been exceeded - AutoIt will quit to prevent stack overflow.&Cannot make existing variables static.4Cannot make static variables into regular variables.

3This keyword cannot be used after a "Then" keyword.>"Select" statement is missing "EndSelect" or "Case" statement. "If" statements must have a "Then" keyword. Badly formated Struct statement."Cannot assign values to constants..Cannot make existing variables into constants.9Only Object-type variables allowed in a "With" statement.v"long_ptr", "int_ptr" and "short_ptr" DllCall() types have been deprecated. Use "long*", "int*" and "short*" instead.-Object referenced outside a "With" statement.)Nested "With" statements are not allowed."Variable must be of type "Object".1The requested action with this object has failed.8Variable appears more than once in function declaration.2ReDim array can not be initialized in this manner.1An array variable can not be used in this manner.

Can not redeclare a constant.5Can not redeclare a parameter inside a user function.HCan pass constants by reference only to parameters with "Const" keyword.*Can not initialize a variable with itself.$Incorrect way to use this parameter.:"EndSwitch" statement with no matching "Switch" statement.>"Switch" statement is missing "EndSwitch" or "Case" statement.H"ContinueCase" statement with no matching "Select"or "Switch" statement.

String missing closing quote.!Badly formated variable or macro.*Missing separator character after keyword.

4.9.2.2018

3.3.8.1

Remove it with Ad-Aware

1. Click (here) to download and install Ad-Aware Free Antivirus.
2. Update the definition files.
3. Run a full scan of your computer.

Manual removal*

1. Terminate malicious process(es) (How to End a Process With the Task Manager):
   

   schtasks.exe:1920
   schtasks.exe:508
   schtasks.exe:1448
   

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:
   

   C:\4e3b886ef4ca0b1b073d9e0f168226d3.lnk (533 bytes)
   C:\AppData.ini (481488 bytes)
   C:\libmysql.dll (268248 bytes)
   C:\AppInfo.ini (1209 bytes)
   C:\ActiveX.ini (392 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OHYRGXIJ\libmysql[1].dll (1020410 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (3 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\89AJKDYV\7zip32[1].dll (114345 bytes)
   C:\7zip32.dll (30724 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (1176 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):
   

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "RegAiD" = "C:\%original file name%.exe"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "ctfmon.exe" = "%System%\ctfmon.exe"

5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
6. Reboot the computer.
   

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.