BKDR_BLADABI.AC
Backdoor:MSIL/Bladabindi (Microsoft); Trojan-Dropper.Win32.Dorifel.apnx (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse BackDoor.Generic18.BGVM (AVG)
Windows
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
1,688,172 bytes
EXE
Yes
09 Feb 2015
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%\$inst
- %Program Files%\skype technologie S.A
- %Program Files%\skype technologie S.A\SkypeSetup
(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.)
Autostart Technique
This backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
e62976a12d4e296c9ac3ee229a4c09a3 = "%User Profile%\vcl.exe .."
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
e62976a12d4e296c9ac3ee229a4c09a3 = "%User Profile%\vcl.exe .."
Other System Modifications
This backdoor deletes the following files:
- %User Temp%\$inst\0.tmp
- %User Temp%\$inst\1.tmp
- %User Temp%\$inst\3.tmp
- %User Temp%\$inst\4.tmp
- %User Temp%\$inst\5.tmp
- %User Temp%\$inst\6.tmp
- %User Temp%\$inst\7.tmp
- %User Temp%\$inst\8.tmp
- %User Temp%\$inst\9.tmp
- %User Temp%\$inst\10.tmp
- %User Temp%\$inst\11.tmp
- %User Temp%\$inst\12.tmp
- %User Temp%\$inst\13.tmp
- %User Temp%\$inst\14.tmp
- %User Temp%\$inst\15.tmp
- %User Temp%\$inst\16.tmp
- %User Temp%\$inst\17.tmp
- %User Temp%\$inst\20.tmp
- %User Temp%\$inst\50.tmp
- %User Temp%\$inst\21.tmp
- %User Temp%\$inst\51.tmp
- %User Temp%\$inst\22.tmp
- %User Temp%\$inst\52.tmp
- %User Temp%\$inst\23.tmp
- %User Temp%\$inst\53.tmp
- %User Temp%\$inst\24.tmp
- %User Temp%\$inst\54.tmp
- %User Temp%\$inst\25.tmp
- %User Temp%\$inst\55.tmp
- %User Temp%\$inst\26.tmp
- %User Temp%\$inst\56.tmp
- %User Temp%\$inst\27.tmp
- %User Temp%\$inst\57.tmp
- %User Temp%\$inst\28.tmp
- %User Temp%\$inst\58.tmp
- %User Temp%\$inst\29.tmp
- %User Temp%\$inst\59.tmp
- %User Temp%\$inst\30.tmp
- %User Temp%\$inst\60.tmp
- %User Temp%\$inst\31.tmp
- %User Temp%\$inst\61.tmp
- %User Temp%\$inst\32.tmp
- %User Temp%\$inst\62.tmp
- %User Temp%\$inst\33.tmp
- %User Temp%\$inst\63.tmp
- %User Temp%\$inst\34.tmp
- %User Temp%\$inst\64.tmp
- %User Temp%\$inst\35.tmp
- %User Temp%\$inst\65.tmp
- %User Temp%\$inst\36.tmp
- %User Temp%\$inst\66.tmp
- %User Temp%\$inst\37.tmp
- %User Temp%\$inst\67.tmp
- %User Temp%\$inst\38.tmp
- %User Temp%\$inst\68.tmp
- %User Temp%\$inst\39.tmp
- %User Temp%\$inst\69.tmp
- %User Temp%\$inst\40.tmp
- %User Temp%\$inst\70.tmp
- %User Temp%\$inst\41.tmp
- %User Temp%\$inst\71.tmp
- %User Temp%\$inst\42.tmp
- %User Temp%\$inst\72.tmp
- %User Temp%\$inst\43.tmp
- %User Temp%\$inst\73.tmp
- %User Temp%\$inst\44.tmp
- %User Temp%\$inst\74.tmp
- %User Temp%\$inst\45.tmp
- %User Temp%\$inst\75.tmp
(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.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Phone\UI
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Phone\UI\General
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
DisplayName = "SkypeSetup 7.0.0.22"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
DisplayVersion = "7.0.0.22"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
VersionMajor = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
VersionMinor = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
Publisher = "skype technologie S.A"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
DisplayIcon = "%Program Files%\skype technologie S.A\SkypeSetup\Uninstall.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
UninstallString = "%Program Files%\skype technologie S.A\SkypeSetup\Uninstall.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
URLInfoAbout = "http://www.SKYPE.com"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
HelpLink = "mailto:support@SKYPE.com"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
InstallLocation = "%Program Files%\skype technologie S.A\SkypeSetup"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
InstallDate = "20150105"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
Language = "49"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
EstimatedSize = "799"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
NoModify = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SkypeSetup 7.0.0.22
NoRepair = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Phone\UI
InstallExitCode = "c351"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Phone\UI\General
SkypeSetup = "SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHFF = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHIE = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHGC = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPFF = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPIE = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPGC = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHFF = "14"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHIE = "14"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHGC = "14"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPFF = "14"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPIE = "14"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPGC = "14"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHFF = "15"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHIE = "15"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHGC = "15"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPFF = "15"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPIE = "15"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPGC = "15"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPIE = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPFF = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
MSNHPGC = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHIE = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHFF = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
BINGSRCHGC = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
YHP = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
YSRCH = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
YHP = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
YSRCH = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
C2CFF = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
C2CIE = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
C2CGC = "ff"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
C2CFF = "8"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
C2CGC = "8"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Phone\UI
InstallExitCode = "c357"
HKEY_LOCAL_MACHINE\SOFTWARE\Skype\
Installer
DownloadContentLength = "0"
HKEY_CURRENT_USER\Environment
SEE_MASK_NOZONECHECKS = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%User Profile%\vcl.exe = "%User Profile%\vcl.exe:*:Enabled:vcl.exe"
Dropping Routine
This backdoor drops the following files:
- %User Temp%\$inst\2.tmp
- %User Temp%\$inst\temp_0.tmp
- %Program Files%\skype technologie S.A\SkypeSetup\Uninstall.ini
- %User Temp%\DefaultPackOffer.dll
- %User Profile%\vcl.exe.tmp
- %User Profile%\vcl.exe
(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.. %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 Details
This backdoor connects to the following possibly malicious URL:
- http://ui.{BLOCKED}e.com/ui/0/7.0.0.102/en/lightinstaller?source=lightinstaller
- {BLOCKED}0.1
This report is generated via an automated analysis system.
SOLUTION
9.700
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
Restart in Safe Mode
Step 3
Delete this registry key
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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
- SkypeSetup 7.0.0.22
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Phone
- UI
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Phone\UI
- General
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype
- Installer
Step 4
Delete this registry value
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\Run
- e62976a12d4e296c9ac3ee229a4c09a3 = "%User Profile%\vcl.exe .."
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- e62976a12d4e296c9ac3ee229a4c09a3 = "%User Profile%\vcl.exe .."
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- DisplayName = "SkypeSetup 7.0.0.22"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- DisplayVersion = "7.0.0.22"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- VersionMajor = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- VersionMinor = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- Publisher = "skype technologie S.A"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- DisplayIcon = "%Program Files%\skype technologie S.A\SkypeSetup\Uninstall.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- UninstallString = "%Program Files%\skype technologie S.A\SkypeSetup\Uninstall.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- URLInfoAbout = "http://www.SKYPE.com"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- HelpLink = "mailto:support@SKYPE.com"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- InstallLocation = "%Program Files%\skype technologie S.A\SkypeSetup"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- InstallDate = "20150105"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- Language = "49"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- EstimatedSize = "799"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- NoModify = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SkypeSetup 7.0.0.22
- NoRepair = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Phone\UI
- InstallExitCode = "c351"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Phone\UI\General
- SkypeSetup = "SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHFF = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHIE = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHGC = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPFF = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPIE = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPGC = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHFF = "14"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHIE = "14"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHGC = "14"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPFF = "14"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPIE = "14"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPGC = "14"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHFF = "15"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHIE = "15"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHGC = "15"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPFF = "15"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPIE = "15"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPGC = "15"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPIE = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPFF = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- MSNHPGC = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHIE = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHFF = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- BINGSRCHGC = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- YHP = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- YSRCH = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- YHP = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- YSRCH = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- C2CFF = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- C2CIE = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- C2CGC = "ff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- C2CFF = "8"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- C2CGC = "8"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Phone\UI
- InstallExitCode = "c357"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Skype\Installer
- DownloadContentLength = "0"
- In HKEY_CURRENT_USER\Environment
- SEE_MASK_NOZONECHECKS = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- %User Profile%\vcl.exe = "%User Profile%\vcl.exe:*:Enabled:vcl.exe"
Step 5
Search and delete these components
- %User Temp%\$inst\2.tmp
- %User Temp%\$inst\temp_0.tmp
- %Program Files%\skype technologie S.A\SkypeSetup\Uninstall.ini
- %User Temp%\DefaultPackOffer.dll
- %User Profile%\vcl.exe.tmp
- %User Profile%\vcl.exe
Step 6
Search and delete these folders
- %User Temp%\$inst
- %Program Files%\skype technologie S.A
- %Program Files%\skype technologie S.A\SkypeSetup
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_BLADABI.AC. 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 8
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.
- %User Temp%\$inst\0.tmp
- %User Temp%\$inst\1.tmp
- %User Temp%\$inst\3.tmp
- %User Temp%\$inst\4.tmp
- %User Temp%\$inst\5.tmp
- %User Temp%\$inst\6.tmp
- %User Temp%\$inst\7.tmp
- %User Temp%\$inst\8.tmp
- %User Temp%\$inst\9.tmp
- %User Temp%\$inst\10.tmp
- %User Temp%\$inst\11.tmp
- %User Temp%\$inst\12.tmp
- %User Temp%\$inst\13.tmp
- %User Temp%\$inst\14.tmp
- %User Temp%\$inst\15.tmp
- %User Temp%\$inst\16.tmp
- %User Temp%\$inst\17.tmp
- %User Temp%\$inst\20.tmp
- %User Temp%\$inst\50.tmp
- %User Temp%\$inst\21.tmp
- %User Temp%\$inst\51.tmp
- %User Temp%\$inst\22.tmp
- %User Temp%\$inst\52.tmp
- %User Temp%\$inst\23.tmp
- %User Temp%\$inst\53.tmp
- %User Temp%\$inst\24.tmp
- %User Temp%\$inst\54.tmp
- %User Temp%\$inst\25.tmp
- %User Temp%\$inst\55.tmp
- %User Temp%\$inst\26.tmp
- %User Temp%\$inst\56.tmp
- %User Temp%\$inst\27.tmp
- %User Temp%\$inst\57.tmp
- %User Temp%\$inst\28.tmp
- %User Temp%\$inst\58.tmp
- %User Temp%\$inst\29.tmp
- %User Temp%\$inst\59.tmp
- %User Temp%\$inst\30.tmp
- %User Temp%\$inst\60.tmp
- %User Temp%\$inst\31.tmp
- %User Temp%\$inst\61.tmp
- %User Temp%\$inst\32.tmp
- %User Temp%\$inst\62.tmp
- %User Temp%\$inst\33.tmp
- %User Temp%\$inst\63.tmp
- %User Temp%\$inst\34.tmp
- %User Temp%\$inst\64.tmp
- %User Temp%\$inst\35.tmp
- %User Temp%\$inst\65.tmp
- %User Temp%\$inst\36.tmp
- %User Temp%\$inst\66.tmp
- %User Temp%\$inst\37.tmp
- %User Temp%\$inst\67.tmp
- %User Temp%\$inst\38.tmp
- %User Temp%\$inst\68.tmp
- %User Temp%\$inst\39.tmp
- %User Temp%\$inst\69.tmp
- %User Temp%\$inst\40.tmp
- %User Temp%\$inst\70.tmp
- %User Temp%\$inst\41.tmp
- %User Temp%\$inst\71.tmp
- %User Temp%\$inst\42.tmp
- %User Temp%\$inst\72.tmp
- %User Temp%\$inst\43.tmp
- %User Temp%\$inst\73.tmp
- %User Temp%\$inst\44.tmp
- %User Temp%\$inst\74.tmp
- %User Temp%\$inst\45.tmp
- %User Temp%\$inst\75.tmp
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