BKDR_XYLIGAN.PVU
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
3,936,311 bytes
EXE
No
05 Aug 2016
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%\OfflineTool
- %User Temp%\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.)
Other System Modifications
This backdoor deletes the following folders:
- %User Temp%\offlinetool
(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.)
Dropping Routine
This backdoor drops the following files:
- %User Temp%\Lamfind.exe
- %User Temp%\MAPPHYNT.EXE
- %User Temp%\OfflineTool\MdCopy.ini
- %User Temp%\OfflineTool\ModuleCopy.exe
- %User Temp%\Smbios32.exe
- %User Temp%\WmiAgent.exe
- %User Temp%\common.xml
- %User Temp%\exe\LAMINV.exe
- %User Temp%\exe\LAMINV20080621.exe
- %User Temp%\exe\LAMINV20080627.exe
- %User Temp%\exe\LAMINV20081222.exe
- %User Temp%\exe\LAMINV20100830.exe
- %User Temp%\exe\LAMINV20110927.exe
- %User Temp%\exe\LamSender.log
- %User Temp%\exe\laminv20110117.exe
- %User Temp%\exe\laminv20110124.exe
- %User Temp%\exe\laminv20120925.exe
- %User Temp%\exe\output.xml
- %User Temp%\exe\smbios32.ini
- %User Temp%\field.xml
- %User Temp%\lamseek.exe
- %User Temp%\lamseekdef.txt
- %User Temp%\lamsender.exe
- .\LamSender.log
(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.)
This report is generated via an automated analysis system.
SOLUTION
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
Search and delete these components
- %User Temp%\Lamfind.exe
- %User Temp%\MAPPHYNT.EXE
- %User Temp%\OfflineTool\MdCopy.ini
- %User Temp%\OfflineTool\ModuleCopy.exe
- %User Temp%\Smbios32.exe
- %User Temp%\WmiAgent.exe
- %User Temp%\common.xml
- %User Temp%\exe\LAMINV.exe
- %User Temp%\exe\LAMINV20080621.exe
- %User Temp%\exe\LAMINV20080627.exe
- %User Temp%\exe\LAMINV20081222.exe
- %User Temp%\exe\LAMINV20100830.exe
- %User Temp%\exe\LAMINV20110927.exe
- %User Temp%\exe\LamSender.log
- %User Temp%\exe\laminv20110117.exe
- %User Temp%\exe\laminv20110124.exe
- %User Temp%\exe\laminv20120925.exe
- %User Temp%\exe\output.xml
- %User Temp%\exe\smbios32.ini
- %User Temp%\field.xml
- %User Temp%\lamseek.exe
- %User Temp%\lamseekdef.txt
- %User Temp%\lamsender.exe
- .\LamSender.log
Step 3
Search and delete these folders
- %User Temp%\OfflineTool
- %User Temp%\exe
Step 4
Scan your computer with your Trend Micro product to delete files detected as BKDR_XYLIGAN.PVU. 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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