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%sysdir%\calc.dll - Dangerous
Fix it immediately
%sysdir%\calc.dll
We suggest you to remove s_loader.exe from your computer as soon as possible.
S_loader.exe is Trojan/Backdoor.
Kill the process s_loader.exe and remove s_loader.exe from Windows startup.
Malware dropper:
s_loader.exe
Removed:
C:\Documents and Settings\Administrator\Application Data\seres.exe
C:\Documents and Settings\Administrator\Application Data\svcst.exe
C:\DOCUME~1\ADMINI~1\ntuser.dll
C:\WINDOWS\system32\calc.dll
C:\Program Files\AntivirusPro_2010\AntivirusPro_2010.exe
C:\Documents and Settings\Administrator\Start Menu\Programs\Startup\scandisk.dll
-------------------------------------------------------------------------------------
Classification:
Code:
Antivirus Version Last Update Result
F-Secure 8.0.14470.0 2009.10.08 -
Kaspersky 7.0.0.125 2009.10.08 -
McAfee 5765 2009.10.08 Generic.dx!fpr
Microsoft 1.5101 2009.10.08 TrojanDownloader:Win32/FakeRean
NOD32 4491 2009.10.08 a variant of Win32/Kryptik.AMD
Symantec 1.4.4.12 2009.10.08 Packed.Generic.255
Additional information
File size: 62976 bytes
MD5 : 8a93d70504b354beec93a7ba2748c11a
SHA1 : a6024dde7f4b6abceabda203b12fd9d1d542e8b9
-------------------------------------------------------------------------------------
Installation
When the program is executed, it creates the following registry subkeys and values:
----------------------------------
Keys deleted:121
----------------------------------
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\AppMgmt
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\Base
/.../
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\{4D36E980-E325-11CE-BFC1-08002BE10318}
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\{71A27CDD-812A-11D0-BEC7-08002BE2092F}
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\{745A17A0-74D3-11D0-B6FE-00A0C90F57DA}
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\AFD
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\AppMgmt
/.../
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\{4D36E980-E325-11CE-BFC1-08002BE10318}
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\{71A27CDD-812A-11D0-BEC7-08002BE2092F}
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\{745A17A0-74D3-11D0-B6FE-00A0C90F57DA}
----------------------------------
Keys added:3
----------------------------------
HKLM\SOFTWARE\Microsoft\DownloadManager
HKCU\Software\Microsoft\Internet Explorer\Download
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Associations
----------------------------------
Values deleted:119
----------------------------------
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\{745A17A0-74D3-11D0-B6FE-00A0C90F57DA}\: "Human Interface Devices"
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\{71A27CDD-812A-11D0-BEC7-08002BE2092F}\: "Volume"
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\{4D36E980-E325-11CE-BFC1-08002BE10318}\: "Floppy disk drive"
/.../
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\Boot Bus Extender\: "Driver Group"
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\Base\: "Driver Group"
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\AppMgmt\: "Service"
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\{745A17A0-74D3-11D0-B6FE-00A0C90F57DA}\: "Human Interface Devices"
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\{71A27CDD-812A-11D0-BEC7-08002BE2092F}\: "Volume"
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\{4D36E980-E325-11CE-BFC1-08002BE10318}\: "Floppy disk drive"
/.../
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\AppMgmt\: "Service"
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\AFD\: "Service"
HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\AlternateShell: "cmd.exe"
----------------------------------
Values added:11
----------------------------------
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\calc: "rundll32.exe C:\WINDOWS\system32\calc.dll,_IWMPEvents@0"
HKCU\Software\Microsoft\Internet Explorer\Download\CheckExeSignatures: "no"
HKCU\Software\Microsoft\Internet Explorer\Download\RunInvalidSignatures: 0x00000001
HKCU\Software\Microsoft\Security Center\AntiVirusDisableNotify: 0x00000001
HKCU\Software\Microsoft\Security Center\FirewallDisableNotify: 0x00000001
HKCU\Software\Microsoft\Security Center\UpdatesDisableNotify: 0x00000001
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Associations\LowRiskFileTypes: "zip;.rar;.cab;.txt;.exe;.reg;.msi;.htm;.html;.gif;.bmp;.jpg;.avi;.mov;.mp3;.wav"
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Associations\SaveZoneInformation: 0x00000001
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\calc: "rundll32.exe C:\DOCUME~1\ADMINI~1\ntuser.dll,_IWMPEvents@0"
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\mserv: "C:\Documents and Settings\Administrator\Application Data\seres.exe"
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\svchost: "C:\Documents and Settings\Administrator\Application Data\svcst.exe"
----------------------------------
Values modified:0
----------------------------------
----------------------------------
Files added:9
----------------------------------
C:\Documents and Settings\Administrator\Application Data\lizkavd.exe
C:\Documents and Settings\Administrator\Application Data\seres.exe
C:\Documents and Settings\Administrator\Application Data\svcst.exe
C:\Documents and Settings\Administrator\Local Settings\Temp\nsrbgxod.bak
C:\Documents and Settings\Administrator\Local Settings\Temp\popka.exe
C:\Documents and Settings\Administrator\Local Settings\Temp\rundll32.dll
C:\Documents and Settings\Administrator\Start Menu\Programs\Startup\scandisk.dll
C:\Documents and Settings\Administrator\Start Menu\Programs\Startup\scandisk.lnk
C:\WINDOWS\system32\calc.dll
----------------------------------
Files deleted:1
----------------------------------
C:\sand-box\s_loader.exe
----------------------------------
Files [attributes?] modified:0
----------------------------------
----------------------------------
Folders added:0
----------------------------------
----------------------------------
Folders deleted:0
----------------------------------
----------------------------------
Total changes:264
----------------------------------
-------------------------------------------------------------------------------------
Internet activity:
Code:
HTTP GET http://utorgtanedoskaw.com/files/avp21_d...
HTTP GET http://rtugamer5tobes.com/files/avp21_d_...
HTTP GET http://lersolamgaderg.com/files/avp21_d_...
HTTP GET http://orav4abustorabe.com/files/avp21_d...
HTTP GET http://orav4abustorabe.com/files/avp21_d...
HTTP GET http://orav4abustorabe.com/files/_AVE_._...
HTTP GET http://orav4abustorabe.com/files/_AVE_._...
HTTP GET http://orav4abustorabe.com/files/_Add_._...
HTTP GET http://orav4abustorabe.com/files/_GUI_._...
HTTP GET http://orav4abustorabe.com/files/_SC_._d...
HTTP GET http://orav4abustorabe.com/files/_Upd_._...
-------------------------------------------------------------------------------------
Detected by UnHackMe:
Item Name: mserv
Author: Unknown
Related File: C:\Documents and Settings\Administrator\Application Data\seres.exe
Type: Registry Run
Item Name: svchost
Author: Unknown
Related File: C:\Documents and Settings\Administrator\Application Data\svcst.exe
Type: Registry Run
Item Name: seres.exe
Author: Unknown
Related File: C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\SERES.EXE
Type: Running Processes
Item Name: calc
Author: Microsoft
Related File: rundll32.exe C:\DOCUME~1\ADMINI~1\ntuser.dll,_IWMPEvents@0
Type: Registry Run
Item Name: calc
Author: Microsoft
Related File: rundll32.exe C:\WINDOWS\system32\calc.dll,_IWMPEvents@0
Type: Registry Run
After first reboot detected by UnHackMe:
Item Name: Antivirus Pro 2010
Author: vikbnerobeb
Related File: "C:\Program Files\AntivirusPro_2010\AntivirusPro_2010.exe" /hide
Type: Registry Run
Item Name: Antivirus Pro 2010
Author: vikbnerobeb
Related File: "C:\Program Files\AntivirusPro_2010\AntivirusPro_2010.exe" /hide
Type: Registry Run
Item Name: calc
Author:
Related File: rundll32.exe C:\WINDOWS\system32\calc.dll,_IWMPEvents@0
Type: Registry Run
Item Name: scandisk.dll
Author: Microsoft
Related File: C:\Documents and Settings\Administrator\Start Menu\Programs\Startup\scandisk.dll
Type: Startup Folder
Removal Results: Success
Number of reboot: 2
-------------------------------------------------------------------------------------
Recommended software:
UnHackMe anti-rootkit and anti-malware
http://www.unhackme.com
RegRun Security Suite (Good choice for removal and protection)
Remove CALC.DLL.HTM now!
Virus Problem? Google Redirects? Ads? Slow?
- First download the latest version UnHackMe: Download UnHackMe.
- Open the archive and start the unhackme_setup.exe.
- When the installation is over you will see the main UnHackMe screen.
- Click on the Advanced button and choose “Send report to the support center” in the popup menu. Follow the instructions.
The report file (regrunlog.txt) will be saved on your Desktop.
- Go to the Support Center.
Attach it to your ticket and click on the Browse button and then to the regrunlog.txt file.
Don’t insert the report text directly into the message text! We won’t be able to analyse such a report.
Describe your problem in detail. Add the screenshot, your antivirus log or suspicious files.
Constantly updated. Last update:
February 5 2012
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