ADW_DLGUIDE
Trojan.Win32.Generic!BT (Sunbelt)
Windows
Threat Type: Adware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This adware 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
Arrival Details
This adware 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 adware creates the following folders:
- %User Temp%\is-5A82N.tmp
- %User Temp%\is-IV8UJ.tmp
- %User Temp%\is-IV8UJ.tmp\_isetup
(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.)
Other System Modifications
This adware adds the following registry keys:
HKEY_CURRENT_USER\Software\Sysinternals\
PsKill
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\MCD
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Sysinternals\
PsKill
EulaAccepted = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\MCD
Enable = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\MCD
SwapSync = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\MCD
Palettized Formats = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\MCD
IO Priority = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\MCD
Use Generic Stencil = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\MCD
Enumerate as ICD = "0"
Dropping Routine
This adware drops the following files:
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/sdan.exe
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/sdapk.exe
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/sdaspwn.exe
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/licence.txt
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/excel-urlaubs-und-absenzkalender_small_17.png
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/dvFerienKalender_V5.exe
- %User Temp%\is-5A82N.tmp\dvFerienKalender_V5.tmp
- %User Temp%\is-IV8UJ.tmp\_isetup\_RegDLL.tmp
- %User Temp%\is-IV8UJ.tmp\_isetup\_shfoldr.dll
(Note: %System Root% is the Windows root folder, where it usually is C:\ 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.)
Other Details
This adware connects to the following possibly malicious URL:
- {BLOCKED}80.169
- {BLOCKED}9.79
- {BLOCKED}.100.39
- {BLOCKED}9.74
- {BLOCKED}3.147.188
This report is generated via an automated analysis system.
SOLUTION
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
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\Sysinternals
- PsKill
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion
- MCD
Step 3
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\Sysinternals\PsKill
- EulaAccepted = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MCD
- Enable = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MCD
- SwapSync = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MCD
- Palettized Formats = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MCD
- IO Priority = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MCD
- Use Generic Stencil = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MCD
- Enumerate as ICD = "0"
Step 4
Search and delete these components
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/sdan.exe
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/sdapk.exe
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/sdaspwn.exe
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/licence.txt
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/excel-urlaubs-und-absenzkalender_small_17.png
- %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/dvFerienKalender_V5.exe
- %User Temp%\is-5A82N.tmp\dvFerienKalender_V5.tmp
- %User Temp%\is-IV8UJ.tmp\_isetup\_RegDLL.tmp
- %User Temp%\is-IV8UJ.tmp\_isetup\_shfoldr.dll
Step 5
Search and delete these folders
- %User Temp%\is-5A82N.tmp
- %User Temp%\is-IV8UJ.tmp
- %User Temp%\is-IV8UJ.tmp\_isetup
Step 6
Scan your computer with your Trend Micro product to delete files detected as ADW_DLGUIDE. 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.
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