Trojan.Win32.MSISTAH.F
RDN/Generic.grp (McAfee); Trojan.Win32.Makoob.cn (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt)
Windows
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
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 creates the following folders:
- %User Temp%\opname\todo
- %User Temp%\opname
- %User Temp%\opname\todo\admid
- %User Profile%\AppData
- %Application Data%\ref\deletebookmarks\adminpwd
- %Application Data%\ref
- %User Temp%\u43\newPass2
- %User Temp%\u43\newPass2\submitorderby
- %User Temp%\en
- %System Root%\Users
- %Application Data%\ref\deletebookmarks\adminpwd\noheader
- %Application Data%\ref\deletebookmarks
- %User Temp%\en\sendmail
- %Application Data%\standard
- %User Temp%\u43
- %User Temp%\ctf
- %Start Menu%\Programs\Viking
(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Other System Modifications
This Trojan adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Run
QSnoop = "%Program Files%\completedir\QSnoop.exe"
Dropping Routine
This Trojan drops the following files:
- %User Temp%\u43\newPass2\submitorderby\qtgd.qm
- %Application Data%\ref\deletebookmarks\adminpwd\noheader\Aspnetregsql.exe
- %Application Data%\standard\pbmmake
- %Application Data%\standard\imAccountWizard.xul
- %Application Data%\standard\queryobjectbar.xml
- %Application Data%\standard\resize2fs.8.gz
- %Application Data%\standard\mathml+xml.xml
- %Application Data%\standard\lcinsertformcheck.png
- %User Temp%\opname\todo\admid\cp1255.cpython-35.pyc
- %Application Data%\standard\pythonconsole.cpython-36.pyc
- %Application Data%\standard\73.opends60.dll
- %Application Data%\standard\ZipExeStub.exe
- %User Temp%\u43\newPass2\submitorderby\officepublishermadeeasyfive1.gif
- %User Temp%\en\sendmail\x-trig.xml
- %Application Data%\standard\int340xthermalzone.ko
- %Application Data%\standard\model62.xml
- %User Temp%\u43\newPass2\submitorderby\lib80211.h
- %Application Data%\standard\libbrlttybht.so
- %Application Data%\standard\tiam335xadc.ko
- %User Temp%\ctf\soundfont.h
- %User Temp%\u43\newPass2\submitorderby\05030800.xhp
- %Application Data%\ref\deletebookmarks\adminpwd\noheader\Properties.xml
- %Application Data%\standard\47.opends60.dll
- %User Temp%\opname\todo\admid\radiance-windowbutton-hover.png
- %Application Data%\standard\resToResX.exe
- %User Temp%\ctf\dumpbin.exe
- %Application Data%\standard\WindowsSharePointServices0704fig04.gif
- %User Temp%\ctf\genasm.exe
- %User Temp%\u43\newPass2\submitorderby\hptiop.h
(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
This report is generated via an automated analysis system.
SOLUTION
Step 1
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 2
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_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run
- QSnoop = "%Program Files%\completedir\QSnoop.exe"
Step 3
Search and delete these components
- %User Temp%\u43\newPass2\submitorderby\qtgd.qm
- %Application Data%\ref\deletebookmarks\adminpwd\noheader\Aspnetregsql.exe
- %Application Data%\standard\pbmmake
- %Application Data%\standard\imAccountWizard.xul
- %Application Data%\standard\queryobjectbar.xml
- %Application Data%\standard\resize2fs.8.gz
- %Application Data%\standard\mathml+xml.xml
- %Application Data%\standard\lcinsertformcheck.png
- %User Temp%\opname\todo\admid\cp1255.cpython-35.pyc
- %Application Data%\standard\pythonconsole.cpython-36.pyc
- %Application Data%\standard\73.opends60.dll
- %Application Data%\standard\ZipExeStub.exe
- %User Temp%\u43\newPass2\submitorderby\officepublishermadeeasyfive1.gif
- %User Temp%\en\sendmail\x-trig.xml
- %Application Data%\standard\int340xthermalzone.ko
- %Application Data%\standard\model62.xml
- %User Temp%\u43\newPass2\submitorderby\lib80211.h
- %Application Data%\standard\libbrlttybht.so
- %Application Data%\standard\tiam335xadc.ko
- %User Temp%\ctf\soundfont.h
- %User Temp%\u43\newPass2\submitorderby\05030800.xhp
- %Application Data%\ref\deletebookmarks\adminpwd\noheader\Properties.xml
- %Application Data%\standard\47.opends60.dll
- %User Temp%\opname\todo\admid\radiance-windowbutton-hover.png
- %Application Data%\standard\resToResX.exe
- %User Temp%\ctf\dumpbin.exe
- %Application Data%\standard\WindowsSharePointServices0704fig04.gif
- %User Temp%\ctf\genasm.exe
- %User Temp%\u43\newPass2\submitorderby\hptiop.h
Step 4
Search and delete these folders
- %User Temp%\opname\todo
- %User Temp%\opname
- %User Temp%\opname\todo\admid
- %User Profile%\AppData
- %Application Data%\ref\deletebookmarks\adminpwd
- %Application Data%\ref
- %User Temp%\u43\newPass2
- %User Temp%\u43\newPass2\submitorderby
- %User Temp%\en
- %System Root%\Users
- %Application Data%\ref\deletebookmarks\adminpwd\noheader
- %Application Data%\ref\deletebookmarks
- %User Temp%\en\sendmail
- %Application Data%\standard
- %User Temp%\u43
- %User Temp%\ctf
- %Start Menu%\Programs\Viking
Step 5
Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.MSISTAH.F. 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 the following Trend Micro Support pages for more information:
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