TROJ_DLUCA_0000008.TOMA


 ALIASES:

TrojanDownloader:Win32/Dluca.DK (Microsoft); Generic.dx (McAfee); Dialer.Adultchat (Symantec); PAK:PE_Patch.PECompact, PAK:PecBundle, PAK:PECompact, Trojan-Downloader.Win32.Dluca.cc (Kaspersky); Trojan-Downloader.Dluca (v) (Sunbelt)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan 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:

57,344 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

09 Oct 2012

Arrival Details

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

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
msevnt = "%System%\msevnt.exe /nocomm"

It registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\Modem\Enum

Other System Modifications

This Trojan deletes the following files:

  • %User Temp%\delwbi.tmp
  • %System%\msevnt.exe:Zone.Identifier

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

It adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
SystemCertificates\TrustedPublisher\Certificates\
F7EE4E3689C2DCF4A531C20954D158C1936D9A3C

HKEY_CURRENT_USER\Software\Microsoft\
SystemCertificates\TrustedPublisher\Certificates\
1567DAAB1377FE3552D2F6F2A2FA80200135EDA5

HKEY_CURRENT_USER\Software\Microsoft\
SystemCertificates\TrustedPublisher\Certificates\
F705E9D8DAA72DF53D068BF60B551EA3103D51D7

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
SystemCertificates\TrustedPublisher\Certificates\
F7EE4E3689C2DCF4A531C20954D158C1936D9A3C
Blob = "{random values}"

HKEY_CURRENT_USER\Software\Microsoft\
SystemCertificates\TrustedPublisher\Certificates\
1567DAAB1377FE3552D2F6F2A2FA80200135EDA5
Blob = "{random values}"

HKEY_CURRENT_USER\Software\Microsoft\
SystemCertificates\TrustedPublisher\Certificates\
F705E9D8DAA72DF53D068BF60B551EA3103D51D7
Blob = "{random values}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{25DBCE51-6C8F-4A72-8A6D-B54C2B4FC835}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{36FC9E60-C465-11CF-8056-444553540000}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4658EE7E-F050-11D1-B6BD-00C04FA372A7}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{48721B56-6795-11D2-B1A8-0080C72E74A2}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{49CE6AC8-6F86-11D2-B1E5-0080C72E74A2}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E966-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E969-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E96E-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E970-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E971-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E972-E325-11CE-BFC1-08002bE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E973-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E974-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E975-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E977-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E978-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E979-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E97B-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E97D-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E97E-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E980-E325-11CE-BFC1-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{50127DC3-0F36-415E-A6CC-4CB3BE910B65}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{50906CB8-BA12-11D1-BF5D-0000F805F530}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{50DD5230-BA8A-11D1-BF5D-0000F805F530}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{533C5B84-EC70-11D2-9505-00C04F79DEAF}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{66F250D6-7801-4A64-B139-EEA80A450B24}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{6BDD1FC1-810F-11D0-BEC7-08002BE2092F}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{6BDD1FC5-810F-11D0-BEC7-08002BE2092F}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{6BDD1FC6-810F-11D0-BEC7-08002BE2092F}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{6D807884-7D21-11CF-801C-08002BE10318}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{71A27CDD-812A-11D0-BEC7-08002BE2092F}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{72631E54-78A4-11D0-BCF7-00AA00B7B32A}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{745A17A0-74D3-11D0-B6FE-00A0C90F57DA}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{7EBEFBC0-3200-11D2-B4C2-00A0C9697D07}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{8ECC055D-047F-11D1-A537-0000F8753ED1}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{A0A588A4-C46F-4B37-B7EA-C82FE89870C6}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{C06FF265-AE09-48F0-812C-16753D7CBA83}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{C459DF55-DB08-11D1-B009-00A0C9081FF6}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{CE5939AE-EBDE-11D0-B181-0000F8753EC4}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{D45B1C18-C8FA-11D1-9F77-0000F805F530}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{D48179BE-EC20-11D1-B6B8-00C04FA372A7}
UserINIT = "ATS7=75"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{E0CBF06C-CD8B-4647-BB8A-263B43F0F974}
UserINIT = "ATS7=75"

It deletes the following registry keys:

HKEY_LOCAL_MACHINE\software\vinfo

HKEY_CURRENT_USER\software\vinfo

HKEY_LOCAL_MACHINE\software\pinfo\
Dialers

HKEY_CURRENT_USER\software\pinfo\
Dialers

HKEY_LOCAL_MACHINE\software\pmx\
Dialers

HKEY_CURRENT_USER\software\pmx\
Dialers

HKEY_LOCAL_MACHINE\software\nwrep\
msevnt\Dialers

HKEY_CURRENT_USER\software\nwrep\
msevnt\Dialers

HKEY_LOCAL_MACHINE\software\siteicons\
Dialers

HKEY_CURRENT_USER\software\siteicons\
Dialers

HKEY_LOCAL_MACHINE\software\comsoft\
Dialers

HKEY_CURRENT_USER\software\comsoft\
Dialers

HKEY_LOCAL_MACHINE\software\gsoft\
Dialers

HKEY_CURRENT_USER\software\gsoft\
Dialers

HKEY_LOCAL_MACHINE\software\gmsoft\
Dialers

HKEY_CURRENT_USER\software\gmsoft\
Dialers

HKEY_LOCAL_MACHINE\software\scom\
Dialers

HKEY_CURRENT_USER\software\scom\
Dialers

HKEY_LOCAL_MACHINE\software\vcom\
Dialers

HKEY_CURRENT_USER\software\vcom\
Dialers

HKEY_LOCAL_MACHINE\software\winmx\
Dialers

HKEY_CURRENT_USER\software\winmx\
Dialers

HKEY_LOCAL_MACHINE\software\wmx\
Dialers

HKEY_CURRENT_USER\software\wmx\
Dialers

HKEY_LOCAL_MACHINE\software\video1\
Dialers

HKEY_CURRENT_USER\software\video1\
Dialers

Dropping Routine

This Trojan drops the following files:

  • %System%\msevnt.exe

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.200

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Restart in Safe Mode

[ Learn More ]

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_LOCAL_MACHINE\System\CurrentControlSet\Services\Modem
    • Enum
  • In HKEY_CURRENT_USER\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates
    • F7EE4E3689C2DCF4A531C20954D158C1936D9A3C
  • In HKEY_CURRENT_USER\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates
    • 1567DAAB1377FE3552D2F6F2A2FA80200135EDA5
  • In HKEY_CURRENT_USER\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates
    • F705E9D8DAA72DF53D068BF60B551EA3103D51D7

Step 4

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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • msevnt = "%System%\msevnt.exe /nocomm"
  • In HKEY_CURRENT_USER\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates\F7EE4E3689C2DCF4A531C20954D158C1936D9A3C
    • Blob = "{random values}"
  • In HKEY_CURRENT_USER\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates\1567DAAB1377FE3552D2F6F2A2FA80200135EDA5
    • Blob = "{random values}"
  • In HKEY_CURRENT_USER\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates\F705E9D8DAA72DF53D068BF60B551EA3103D51D7
    • Blob = "{random values}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{25DBCE51-6C8F-4A72-8A6D-B54C2B4FC835}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{36FC9E60-C465-11CF-8056-444553540000}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4658EE7E-F050-11D1-B6BD-00C04FA372A7}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{48721B56-6795-11D2-B1A8-0080C72E74A2}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{49CE6AC8-6F86-11D2-B1E5-0080C72E74A2}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E966-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E969-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96E-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E970-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E971-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E972-E325-11CE-BFC1-08002bE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E973-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E974-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E975-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E977-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E978-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E979-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E97B-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E97D-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E97E-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E980-E325-11CE-BFC1-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{50127DC3-0F36-415E-A6CC-4CB3BE910B65}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{50906CB8-BA12-11D1-BF5D-0000F805F530}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{50DD5230-BA8A-11D1-BF5D-0000F805F530}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{533C5B84-EC70-11D2-9505-00C04F79DEAF}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{66F250D6-7801-4A64-B139-EEA80A450B24}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{6BDD1FC1-810F-11D0-BEC7-08002BE2092F}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{6BDD1FC5-810F-11D0-BEC7-08002BE2092F}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{6BDD1FC6-810F-11D0-BEC7-08002BE2092F}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{6D807884-7D21-11CF-801C-08002BE10318}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{71A27CDD-812A-11D0-BEC7-08002BE2092F}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{72631E54-78A4-11D0-BCF7-00AA00B7B32A}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{745A17A0-74D3-11D0-B6FE-00A0C90F57DA}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{7EBEFBC0-3200-11D2-B4C2-00A0C9697D07}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{8ECC055D-047F-11D1-A537-0000F8753ED1}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{A0A588A4-C46F-4B37-B7EA-C82FE89870C6}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{C06FF265-AE09-48F0-812C-16753D7CBA83}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{C459DF55-DB08-11D1-B009-00A0C9081FF6}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{CE5939AE-EBDE-11D0-B181-0000F8753EC4}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{D45B1C18-C8FA-11D1-9F77-0000F805F530}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{D48179BE-EC20-11D1-B6B8-00C04FA372A7}
    • UserINIT = "ATS7=75"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{E0CBF06C-CD8B-4647-BB8A-263B43F0F974}
    • UserINIT = "ATS7=75"

Step 5

Search and delete this file

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  • %System%\msevnt.exe

Step 6

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_DLUCA_0000008.TOMA. 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.

  • %User Temp%\delwbi.tmp
  • %System%\msevnt.exe:Zone.Identifier

Step 8

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

  • In HKEY_LOCAL_MACHINE\software
    • vinfo
  • In HKEY_CURRENT_USER\software
    • vinfo
  • In HKEY_LOCAL_MACHINE\software\pinfo
    • Dialers
  • In HKEY_CURRENT_USER\software\pinfo
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\pmx
    • Dialers
  • In HKEY_CURRENT_USER\software\pmx
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\nwrep\msevnt
    • Dialers
  • In HKEY_CURRENT_USER\software\nwrep\msevnt
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\siteicons
    • Dialers
  • In HKEY_CURRENT_USER\software\siteicons
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\comsoft
    • Dialers
  • In HKEY_CURRENT_USER\software\comsoft
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\gsoft
    • Dialers
  • In HKEY_CURRENT_USER\software\gsoft
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\gmsoft
    • Dialers
  • In HKEY_CURRENT_USER\software\gmsoft
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\scom
    • Dialers
  • In HKEY_CURRENT_USER\software\scom
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\vcom
    • Dialers
  • In HKEY_CURRENT_USER\software\vcom
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\winmx
    • Dialers
  • In HKEY_CURRENT_USER\software\winmx
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\wmx
    • Dialers
  • In HKEY_CURRENT_USER\software\wmx
    • Dialers
  • In HKEY_LOCAL_MACHINE\software\video1
    • Dialers
  • In HKEY_CURRENT_USER\software\video1
    • Dialers


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