TROJ_KILLAV.QZ

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.

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.

Other System Modifications

This Trojan deletes the following files:

• %System Root%\ntldr
• %Windows%\win.ini
• %System Root%\BOOT.ini
• %User Temp%\58e0ef.mst
• %User Temp%\AdobeARM.log
• %User Temp%\AdobeSFX.log
• %User Temp%\ASPNETSetup_00000.log
• %User Temp%\ASPNETSetup_00001.log
• %User Temp%\ASPNETSetup_00002.log
• %User Temp%\dd_depcheck_NETFX_EXP_35.txt
• %User Temp%\dd_dotnetfx35error.txt
• %User Temp%\dd_dotnetfx35install.txt
• %User Temp%\dd_dotNetFx40_Full_x86_x64_decompression_log.txt
• %User Temp%\dd_MSXML6_MSI0686.txt
• %User Temp%\dd_netfx20MSI7F16.txt
• %User Temp%\dd_netfx20UI7F16.txt
• %User Temp%\dd_NET_Framework20_Setup06A7.txt
• %User Temp%\dd_NET_Framework30_Setup0775.txt
• %User Temp%\dd_NET_Framework35_MSI07B9.txt
• %User Temp%\dd_RGB9RAST_x86.msi0683.txt
• %User Temp%\dd_vcredistMSI3CAA.txt
• %User Temp%\dd_vcredistMSI7C21.txt
• %User Temp%\dd_vcredistUI3CAA.txt
• %User Temp%\dd_vcredistUI7C21.txt
• %User Temp%\dd_wcf_CA_smci_20111017_044900_062.txt
• %User Temp%\dd_wcf_retCA29BA.txt
• %User Temp%\dd_WIC.txt
• %User Temp%\dd_XPS.txt
• %User Temp%\Microsoft .NET Framework 4 Setup_20111016_234618578-MSI_netfx_Core_x86.msi.txt
• %User Temp%\Microsoft .NET Framework 4 Setup_20111016_234618578-MSI_netfx_Extended_x86.msi.txt
• %User Temp%\Microsoft .NET Framework 4 Setup_20111016_234618578.html
• %User Temp%\Microsoft Visual C++ 2010 x86 Redistributable Setup_20111020_000954642-MSI_vc_red.msi.txt
• %User Temp%\Microsoft Visual C++ 2010 x86 Redistributable Setup_20111020_000954642.html
• %User Temp%\uxeventlog.txt
• %User Temp%\vminst.log_20111016_212239_Failed.log
• %User Temp%\vminst.log_20130313_012028.log
• %User Temp%\vminst.log_20130313_012352_Failed.log
• %User Temp%\vmmsi.log_20111016_212246_Failed.log
• %User Temp%\vmmsi.log_20130313_012028.log
• %User Temp%\vmmsi.log_20130313_012352_Failed.log
• %User Temp%\WSFF8.tmp
• %User Temp%\WSFF9.tmp

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %Windows% is the Windows folder, which is usually C:\Windows.. %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, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

It deletes the following folders:

• %User Temp%\Microsoft .NET Framework 4 Setup_4.0.30319
• %User Temp%\Microsoft Visual C++ 2010 x86 Redistributable Setup_10.0.30319
• %User Temp%\{835818DD-220C-4ABD-946E-0D8660B95E29}

(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, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

Dropping Routine

This Trojan drops the following files:

• %User Temp%\Hdr.hdr

(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, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

This report is generated via an automated analysis system.