BKDR_TRUVASYS.A


 PLATFORM:

Windows

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This backdoor 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:

3,787,064 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

01 Mar 2017

Arrival Details

This backdoor 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 backdoor creates the following folders:

  • %User Temp%\Microsoft
  • %User Temp%\Microsoft\IKE
  • %Program Files%\WinRAR
  • %Start Menu%\Programs\WinRAR
  • %User Temp%\resplgdll32

(Note: %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.. %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.)

Other System Modifications

This backdoor deletes the following files:

  • %Desktop%\WinRAR.lnk
  • %Start Menu%\WinRAR.lnk
  • %User Temp%\resplgdll32\olesys32.dll
  • %User Temp%\resplgdll32\mvhost32.dll
  • %User Temp%\resplgdll32\sdwin32.dll
  • %User Temp%\resplgdll32\ofx64.dll

(Note: %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.. %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.)

It adds the following registry keys:

HKEY_CURRENT_USER\Software\WinRAR SFX

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.rar

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.zip

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.cab

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.arj

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.lzh

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.ace

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.7z

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tar

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.gz

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.uue

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.bz2

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.jar

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.iso

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.z

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.xz

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.001

HKEY_CURRENT_USER\Software\WinRAR\
Setup\Links

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\App Paths\
WinRAR.exe

HKEY_LOCAL_MACHINE\Software\WinRAR

HKEY_CLASSES_ROOT\CLSID\{B41DB860-8EE4-11D2-9906-E49FADC173CA}

HKEY_CLASSES_ROOT\CLSID\{B41DB860-8EE4-11D2-9906-E49FADC173CA}\
InProcServer32

HKEY_CLASSES_ROOT\WinRAR\shellex\
ContextMenuHandlers\{B41DB860-8EE4-11D2-9906-E49FADC173CA}

HKEY_CLASSES_ROOT\WinRAR\shellex\
PropertySheetHandlers\{B41DB860-8EE4-11D2-9906-E49FADC173CA}

HKEY_CLASSES_ROOT\WinRAR.ZIP\shellex\
ContextMenuHandlers\{B41DB860-8EE4-11D2-9906-E49FADC173CA}

HKEY_CLASSES_ROOT\WinRAR.ZIP\shellex\
PropertySheetHandlers\{B41DB860-8EE4-11D2-9906-E49FADC173CA}

HKEY_CLASSES_ROOT\exefile\shellex\
PropertySheetHandlers\{B41DB860-8EE4-11D2-9906-E49FADC173CA}

HKEY_CLASSES_ROOT\WinRAR\shellex\
DropHandler

HKEY_CLASSES_ROOT\WinRAR.ZIP\shellex\
DropHandler

HKEY_CLASSES_ROOT\*\shellex\
ContextMenuHandlers\WinRAR

HKEY_CLASSES_ROOT\Folder\shellex\
ContextMenuHandlers\WinRAR

HKEY_CLASSES_ROOT\Folder\shellex\
DragDropHandlers\WinRAR

HKEY_CLASSES_ROOT\Drive\shellex\
DragDropHandlers\WinRAR

HKEY_CLASSES_ROOT\.rar

HKEY_CLASSES_ROOT\.r00

HKEY_CLASSES_ROOT\.r01

HKEY_CLASSES_ROOT\.r02

HKEY_CLASSES_ROOT\.r03

HKEY_CLASSES_ROOT\.r04

HKEY_CLASSES_ROOT\.r05

HKEY_CLASSES_ROOT\.r06

HKEY_CLASSES_ROOT\.r07

HKEY_CLASSES_ROOT\.r08

HKEY_CLASSES_ROOT\.r09

HKEY_CLASSES_ROOT\.r10

HKEY_CLASSES_ROOT\.r11

HKEY_CLASSES_ROOT\.r12

HKEY_CLASSES_ROOT\.r13

HKEY_CLASSES_ROOT\.r14

HKEY_CLASSES_ROOT\.r15

HKEY_CLASSES_ROOT\.r16

HKEY_CLASSES_ROOT\.r17

HKEY_CLASSES_ROOT\.r18

HKEY_CLASSES_ROOT\.r19

HKEY_CLASSES_ROOT\.r20

HKEY_CLASSES_ROOT\.r21

HKEY_CLASSES_ROOT\.r22

HKEY_CLASSES_ROOT\.r23

HKEY_CLASSES_ROOT\.r24

HKEY_CLASSES_ROOT\.r25

HKEY_CLASSES_ROOT\.r26

HKEY_CLASSES_ROOT\.r27

HKEY_CLASSES_ROOT\.r28

HKEY_CLASSES_ROOT\.r29

HKEY_CLASSES_ROOT\.rar\ShellNew

HKEY_CLASSES_ROOT\.zip\ShellNew

HKEY_CLASSES_ROOT\.arj

HKEY_CLASSES_ROOT\.lzh

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.lha

HKEY_CLASSES_ROOT\.lha

HKEY_CLASSES_ROOT\.ace

HKEY_CLASSES_ROOT\.7z

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tgz

HKEY_CLASSES_ROOT\.uue

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.xxe

HKEY_CLASSES_ROOT\.xxe

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.uu

HKEY_CLASSES_ROOT\.uu

HKEY_CLASSES_ROOT\.bz2

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tbz2

HKEY_CLASSES_ROOT\.tbz2

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.bz

HKEY_CLASSES_ROOT\.bz

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tbz

HKEY_CLASSES_ROOT\.tbz

HKEY_CLASSES_ROOT\.jar

HKEY_CLASSES_ROOT\.iso

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.taz

HKEY_CLASSES_ROOT\.taz

HKEY_CLASSES_ROOT\.xz

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.txz

HKEY_CLASSES_ROOT\.txz

HKEY_CLASSES_ROOT\.001

HKEY_CLASSES_ROOT\WinRAR\shell\
open\command

HKEY_CLASSES_ROOT\WinRAR\DefaultIcon

HKEY_CLASSES_ROOT\WinRAR.ZIP\shell\
open\command

HKEY_CLASSES_ROOT\WinRAR.ZIP\DefaultIcon

HKEY_CLASSES_ROOT\.rev

HKEY_CLASSES_ROOT\WinRAR.REV

HKEY_CLASSES_ROOT\WinRAR.REV\shell\
open\command

HKEY_CLASSES_ROOT\WinRAR.REV\DefaultIcon

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver

It adds the following registry entries:

HKEY_CURRENT_USER\Software\WinRAR SFX
C%%Program Files%WinRAR = "%Program Files%\WinRAR"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.rar
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.zip
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.cab
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.arj
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.lzh
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.ace
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.7z
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tar
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.gz
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.uue
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.bz2
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.jar
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.iso
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.z
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.xz
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.001
Set = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\Links
Desktop = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\Links
StartMenu = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\Links
Programs = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup
ShellExt = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup
CascadedMenu = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup
MenuIcons = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\WinRAR
exe32 = "%Program Files%\WinRAR\WinRAR.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\App Paths\
WinRAR.exe
Path = "%Program Files%\WinRAR"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B41DB860-8EE4-11D2-9906-E49FADC173CA}\InProcServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Shell Extensions\
Approved
{B41DB860-8EE4-11D2-9906-E49FADC173CA} = "WinRAR shell extension"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.rar
Exist = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.rar\ShellNew
FileName = "%Program Files%\WinRAR\rarnew.dat"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.zip
Exist = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.zip
Type = "CompressedFolder"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.zip
Content = "application/x-zip-compressed"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.zip\ShellNew
FileName = "%Program Files%\WinRAR\zipnew.dat"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.cab
Exist = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.cab
Type = "CLSID\{0CD7A5C0-9F37-11CE-AE65-08002B2E1262}"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.arj
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.lzh
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.lha
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.ace
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.7z
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tar
Exist = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tar
Content = "application/x-tar"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.gz
Exist = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.gz
Content = "application/x-gzip"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tgz
Exist = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tgz
Content = "application/x-compressed"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.uue
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.xxe
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.uu
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.bz2
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tbz2
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.bz
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.tbz
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.jar
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.iso
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.z
Exist = "1"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.z
Content = "application/x-compress"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.taz
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.xz
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.txz
Exist = "0"

HKEY_CURRENT_USER\Software\WinRAR\
Setup\.001
Exist = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
DisplayName = "WinRAR 5.30 beta 5 (32-bit)"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
DisplayVersion = "5.30.5"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
VersionMajor = "5"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
VersionMinor = "1e"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
UninstallString = "%Program Files%\WinRAR\uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
DisplayIcon = "%Program Files%\WinRAR\WinRAR.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
InstallLocation = "%Program Files%\WinRAR"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
NoRepair = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
Language = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinRAR archiver
Publisher = "win.rar GmbH"

Dropping Routine

This backdoor drops the following files:

  • %Temp%\winrar.exe
  • %System%\resdllx.dll
  • %System%\libeay32.dll
  • %System%\ssleay32.dll
  • %User Temp%\Microsoft\IKE\fprot32.exe
  • %System%\dcomx32.exe
  • %System%\winxsys.exe
  • __tmp_rar_sfx_access_check_232765
  • Descript.ion
  • License.txt
  • Rar.txt
  • ReadMe.txt
  • WhatsNew.txt
  • Order.htm
  • RarFiles.lst
  • Uninstall.lst
  • Rar.exe
  • Uninstall.exe
  • UnRAR.exe
  • WinRAR.exe
  • 7zxa.dll
  • RarExt.dll
  • RarExt64.dll
  • UNACEV2.DLL
  • WinRAR.chm
  • Default.SFX
  • WinCon.SFX
  • Zip.SFX
  • %Program Files%\WinRAR\rarnew.dat
  • %Program Files%\WinRAR\zipnew.dat
  • %Start Menu%\Programs\WinRAR\WinRAR.lnk
  • %Start Menu%\Programs\WinRAR\WinRAR help.lnk
  • %Start Menu%\Programs\WinRAR\Console RAR manual.lnk
  • %Start Menu%\Programs\WinRAR\What is new in the latest version.lnk
  • %User Temp%\resplgdll32\vId.bin
  • %User Temp%\resplgdll32\fprot32.exe

(Note: %Temp% is the Windows temporary folder, where it usually is C:\Windows\Temp on all Windows operating system versions.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %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.. %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.)

Other Details

This backdoor connects to the following possibly malicious URL:

  • {BLOCKED}0.1
  • {BLOCKED}.112.68

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.8

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 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
    • WinRAR SFX
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .rar
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .zip
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .cab
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .arj
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .lzh
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .ace
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .7z
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .tar
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .gz
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .uue
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .bz2
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .jar
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .iso
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .z
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .xz
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .001
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • Links
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\App Paths
    • WinRAR.exe
  • In HKEY_LOCAL_MACHINE\Software
    • WinRAR
  • In HKEY_CLASSES_ROOT\CLSID
    • {B41DB860-8EE4-11D2-9906-E49FADC173CA}
  • In HKEY_CLASSES_ROOT\CLSID\{B41DB860-8EE4-11D2-9906-E49FADC173CA}
    • InProcServer32
  • In HKEY_CLASSES_ROOT\WinRAR\shellex\ContextMenuHandlers
    • {B41DB860-8EE4-11D2-9906-E49FADC173CA}
  • In HKEY_CLASSES_ROOT\WinRAR\shellex\PropertySheetHandlers
    • {B41DB860-8EE4-11D2-9906-E49FADC173CA}
  • In HKEY_CLASSES_ROOT\WinRAR.ZIP\shellex\ContextMenuHandlers
    • {B41DB860-8EE4-11D2-9906-E49FADC173CA}
  • In HKEY_CLASSES_ROOT\WinRAR.ZIP\shellex\PropertySheetHandlers
    • {B41DB860-8EE4-11D2-9906-E49FADC173CA}
  • In HKEY_CLASSES_ROOT\exefile\shellex\PropertySheetHandlers
    • {B41DB860-8EE4-11D2-9906-E49FADC173CA}
  • In HKEY_CLASSES_ROOT\WinRAR\shellex
    • DropHandler
  • In HKEY_CLASSES_ROOT\WinRAR.ZIP\shellex
    • DropHandler
  • In HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers
    • WinRAR
  • In HKEY_CLASSES_ROOT\Folder\shellex\ContextMenuHandlers
    • WinRAR
  • In HKEY_CLASSES_ROOT\Folder\shellex\DragDropHandlers
    • WinRAR
  • In HKEY_CLASSES_ROOT\Drive\shellex\DragDropHandlers
    • WinRAR
  • In HKEY_CLASSES_ROOT
    • .rar
  • In HKEY_CLASSES_ROOT
    • .r00
  • In HKEY_CLASSES_ROOT
    • .r01
  • In HKEY_CLASSES_ROOT
    • .r02
  • In HKEY_CLASSES_ROOT
    • .r03
  • In HKEY_CLASSES_ROOT
    • .r04
  • In HKEY_CLASSES_ROOT
    • .r05
  • In HKEY_CLASSES_ROOT
    • .r06
  • In HKEY_CLASSES_ROOT
    • .r07
  • In HKEY_CLASSES_ROOT
    • .r08
  • In HKEY_CLASSES_ROOT
    • .r09
  • In HKEY_CLASSES_ROOT
    • .r10
  • In HKEY_CLASSES_ROOT
    • .r11
  • In HKEY_CLASSES_ROOT
    • .r12
  • In HKEY_CLASSES_ROOT
    • .r13
  • In HKEY_CLASSES_ROOT
    • .r14
  • In HKEY_CLASSES_ROOT
    • .r15
  • In HKEY_CLASSES_ROOT
    • .r16
  • In HKEY_CLASSES_ROOT
    • .r17
  • In HKEY_CLASSES_ROOT
    • .r18
  • In HKEY_CLASSES_ROOT
    • .r19
  • In HKEY_CLASSES_ROOT
    • .r20
  • In HKEY_CLASSES_ROOT
    • .r21
  • In HKEY_CLASSES_ROOT
    • .r22
  • In HKEY_CLASSES_ROOT
    • .r23
  • In HKEY_CLASSES_ROOT
    • .r24
  • In HKEY_CLASSES_ROOT
    • .r25
  • In HKEY_CLASSES_ROOT
    • .r26
  • In HKEY_CLASSES_ROOT
    • .r27
  • In HKEY_CLASSES_ROOT
    • .r28
  • In HKEY_CLASSES_ROOT
    • .r29
  • In HKEY_CLASSES_ROOT\.rar
    • ShellNew
  • In HKEY_CLASSES_ROOT\.zip
    • ShellNew
  • In HKEY_CLASSES_ROOT
    • .arj
  • In HKEY_CLASSES_ROOT
    • .lzh
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .lha
  • In HKEY_CLASSES_ROOT
    • .lha
  • In HKEY_CLASSES_ROOT
    • .ace
  • In HKEY_CLASSES_ROOT
    • .7z
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .tgz
  • In HKEY_CLASSES_ROOT
    • .uue
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .xxe
  • In HKEY_CLASSES_ROOT
    • .xxe
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .uu
  • In HKEY_CLASSES_ROOT
    • .uu
  • In HKEY_CLASSES_ROOT
    • .bz2
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .tbz2
  • In HKEY_CLASSES_ROOT
    • .tbz2
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .bz
  • In HKEY_CLASSES_ROOT
    • .bz
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .tbz
  • In HKEY_CLASSES_ROOT
    • .tbz
  • In HKEY_CLASSES_ROOT
    • .jar
  • In HKEY_CLASSES_ROOT
    • .iso
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .taz
  • In HKEY_CLASSES_ROOT
    • .taz
  • In HKEY_CLASSES_ROOT
    • .xz
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • .txz
  • In HKEY_CLASSES_ROOT
    • .txz
  • In HKEY_CLASSES_ROOT
    • .001
  • In HKEY_CLASSES_ROOT\WinRAR\shell\open
    • command
  • In HKEY_CLASSES_ROOT\WinRAR
    • DefaultIcon
  • In HKEY_CLASSES_ROOT\WinRAR.ZIP\shell\open
    • command
  • In HKEY_CLASSES_ROOT\WinRAR.ZIP
    • DefaultIcon
  • In HKEY_CLASSES_ROOT
    • .rev
  • In HKEY_CLASSES_ROOT
    • WinRAR.REV
  • In HKEY_CLASSES_ROOT\WinRAR.REV\shell\open
    • command
  • In HKEY_CLASSES_ROOT\WinRAR.REV
    • DefaultIcon
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • WinRAR archiver

Step 3

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\WinRAR SFX
    • C%%Program Files%WinRAR = "%Program Files%\WinRAR"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.rar
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.zip
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.cab
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.arj
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.lzh
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.ace
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.7z
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.tar
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.gz
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.uue
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.bz2
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.jar
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.iso
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.z
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.xz
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.001
    • Set = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\Links
    • Desktop = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\Links
    • StartMenu = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\Links
    • Programs = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • ShellExt = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • CascadedMenu = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup
    • MenuIcons = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\WinRAR
    • exe32 = "%Program Files%\WinRAR\WinRAR.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe
    • Path = "%Program Files%\WinRAR"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B41DB860-8EE4-11D2-9906-E49FADC173CA}\InProcServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved
    • {B41DB860-8EE4-11D2-9906-E49FADC173CA} = "WinRAR shell extension"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.rar
    • Exist = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.rar\ShellNew
    • FileName = "%Program Files%\WinRAR\rarnew.dat"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.zip
    • Exist = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.zip
    • Type = "CompressedFolder"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.zip
    • Content = "application/x-zip-compressed"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.zip\ShellNew
    • FileName = "%Program Files%\WinRAR\zipnew.dat"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.cab
    • Exist = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.cab
    • Type = "CLSID\{0CD7A5C0-9F37-11CE-AE65-08002B2E1262}"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.arj
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.lzh
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.lha
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.ace
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.7z
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.tar
    • Exist = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.tar
    • Content = "application/x-tar"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.gz
    • Exist = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.gz
    • Content = "application/x-gzip"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.tgz
    • Exist = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.tgz
    • Content = "application/x-compressed"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.uue
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.xxe
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.uu
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.bz2
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.tbz2
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.bz
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.tbz
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.jar
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.iso
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.z
    • Exist = "1"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.z
    • Content = "application/x-compress"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.taz
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.xz
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.txz
    • Exist = "0"
  • In HKEY_CURRENT_USER\Software\WinRAR\Setup\.001
    • Exist = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • DisplayName = "WinRAR 5.30 beta 5 (32-bit)"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • DisplayVersion = "5.30.5"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • VersionMajor = "5"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • VersionMinor = "1e"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • UninstallString = "%Program Files%\WinRAR\uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • DisplayIcon = "%Program Files%\WinRAR\WinRAR.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • InstallLocation = "%Program Files%\WinRAR"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • NoModify = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • NoRepair = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • Language = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinRAR archiver
    • Publisher = "win.rar GmbH"

Step 4

Search and delete these components

[ Learn More ]
There may be some components 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.
  • %Temp%\winrar.exe
  • %System%\resdllx.dll
  • %System%\libeay32.dll
  • %System%\ssleay32.dll
  • %User Temp%\Microsoft\IKE\fprot32.exe
  • %System%\dcomx32.exe
  • %System%\winxsys.exe
  • __tmp_rar_sfx_access_check_232765
  • Descript.ion
  • License.txt
  • Rar.txt
  • ReadMe.txt
  • WhatsNew.txt
  • Order.htm
  • RarFiles.lst
  • Uninstall.lst
  • Rar.exe
  • Uninstall.exe
  • UnRAR.exe
  • WinRAR.exe
  • 7zxa.dll
  • RarExt.dll
  • RarExt64.dll
  • UNACEV2.DLL
  • WinRAR.chm
  • Default.SFX
  • WinCon.SFX
  • Zip.SFX
  • %Program Files%\WinRAR\rarnew.dat
  • %Program Files%\WinRAR\zipnew.dat
  • %Start Menu%\Programs\WinRAR\WinRAR.lnk
  • %Start Menu%\Programs\WinRAR\WinRAR help.lnk
  • %Start Menu%\Programs\WinRAR\Console RAR manual.lnk
  • %Start Menu%\Programs\WinRAR\What is new in the latest version.lnk
  • %User Temp%\resplgdll32\vId.bin
  • %User Temp%\resplgdll32\fprot32.exe

Step 5

Search and delete these folders

[ 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.
  • %User Temp%\Microsoft
  • %User Temp%\Microsoft\IKE
  • %Program Files%\WinRAR
  • %Start Menu%\Programs\WinRAR
  • %User Temp%\resplgdll32

Step 6

Scan your computer with your Trend Micro product to delete files detected as BKDR_TRUVASYS.A. 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 7

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.

  • %Desktop%\WinRAR.lnk
  • %Start Menu%\WinRAR.lnk
  • %User Temp%\resplgdll32\olesys32.dll
  • %User Temp%\resplgdll32\mvhost32.dll
  • %User Temp%\resplgdll32\sdwin32.dll
  • %User Temp%\resplgdll32\ofx64.dll


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