TROJ_INJECT.AUSPPQ
Trojan:Win32/Skeeyah.A!rfn (Microsoft); Trojan.Gen.2 (Symantec); Trojan.MSIL.Crypt.drlv (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse MSIL11.BDNS (AVG)
Windows
![](/vinfo/imgFiles/legend.jpg)
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
3,524,400 bytes
EXE
No
12 Jun 2017
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.
Installation
This Trojan drops the following copies of itself into the affected system:
- %User Temp%\Microsoft Excel\Texcel.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.)
It creates the following folders:
- %User Profile%\AppData
- %User Profile%\AppData\Local
- %User Profile%\Local\Temp
- %User Profile%\Temp\Microsoft Excel
- %User Profile%\Application Data\Imminent
- %User Profile%\Imminent\Logs
(Note: %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 System Modifications
This Trojan deletes the following files:
- %User Profile%\Temp\ svhost.exe
- %User Profile%\Microsoft Excel\Texcel.exe:Zone.Identifier
- %User Profile%\Microsoft Excel\svhost.bat
- %User Startup%\Texcel.exe:Zone.Identifier
- %User Profile%\Temp\svhost.exe:Zone.Identifier
(Note: %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.. %User Startup% is the current user's Startup folder, which is usually C:\Documents and Settings\{user}\Start Menu\Programs\Startup on Windows 2000 and XP, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows Vista, 7, and 8.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\MediaResources\msvideo
It modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows NT\CurrentVersion\Windows
Load = "%User Temp%\Microsoft Excel\Texcel.exe.lnk "
Dropping Routine
This Trojan drops the following files:
- %User Profile%\Temp\File.JPG
- %User Profile%\Microsoft Excel\Texcel.exe.lnk
- %User Profile%\Microsoft Excel\Texcel.exe.bat
- %User Profile%\Logs\28-05-2017
- %User Profile%\Temp\svhost.exe
(Note: %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 Trojan connects to the following possibly malicious URL:
- {BLOCKED}11.56
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
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\SYSTEM\CurrentControlSet\Control\MediaResources
- msvideo
Step 3
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows
- Load = "%User Temp%\Microsoft Excel\Texcel.exe.lnk "
Step 4
Search and delete these components
- %User Profile%\Temp\File.JPG
- %User Profile%\Microsoft Excel\Texcel.exe.lnk
- %User Profile%\Microsoft Excel\Texcel.exe.bat
- %User Profile%\Logs\28-05-2017
- %User Profile%\Temp\svhost.exe
Step 5
Search and delete these folders
- %User Profile%\AppData
- %User Profile%\AppData\Local
- %User Profile%\Local\Temp
- %User Profile%\Temp\Microsoft Excel
- %User Profile%\Application Data\Imminent
- %User Profile%\Imminent\Logs
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_INJECT.AUSPPQ. 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 Profile%\Temp\ svhost.exe
- %User Profile%\Microsoft Excel\Texcel.exe:Zone.Identifier
- %User Profile%\Microsoft Excel\svhost.bat
- %User Startup%\Texcel.exe:Zone.Identifier
- %User Profile%\Temp\svhost.exe:Zone.Identifier
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