Virus: BDS/Bot.145845 Date discovered: 10/11/2011 Type: Backdoor Server In the wild: No Reported Infections: Low to medium Distribution Potential: Low Damage Potential: Medium Static file: Yes File size: 73.728 Bytes MD5 checksum: EE2DC1DC7CCA53CE57015D6564DA2243 VDF version: 7.11.17.126 - Thursday, November 10, 2011IVDF version: 7.11.17.126 - Thursday, November 10, 2011
General Method of propagation: • No own spreading routine Aliases: • Kaspersky: Trojan-Clicker.Win32.Agent.vjh • Sophos: W32/Slenfbot-AG • Bitdefender: Backdoor.Bot.145845 • Microsoft: Trojan:Win32/Dooxud.A • Eset: Win32/Injector.KTS • DrWeb: BackDoor.IRC.Bot.166 Platforms / OS: • Windows 95 • Windows 98 • Windows 98 SE • Windows 2000 • Windows XP • Windows 2003 • Windows Vista • Windows 7 Files It copies itself to the following location: • %HOME%\Application Data\%random character string% .exe The following file is created: – %TEMPDIR% \google_cachepages2.tmp This is a non malicious text file with the following content: • website=1 It tries to download some files: – The location is the following: • count.lo**********.com/xmyms.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe Furthermore this file gets executed after it was fully downloaded. – The location is the following: • coun**********.com/xms0481.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.lo**********.com/x200.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.lo**********.com/x201.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.lo**********.com/x202.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.lo**********.com/x203.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.ah**********.net/xmyms.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.ah**********.net/xms0481.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.ah**********.net/x200.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.ah**********.net/x201.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.ah**********.net/x202.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Offend.kdv.404824.6 – The location is the following: • count.ah**********.net/x203.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.sy**********.us/xmyms.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.sy**********.us/xms0481.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.sy**********.us/x200.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.sy**********.us/x201.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.sy**********.us/x202.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe – The location is the following: • count.sy**********.us/x203.exe It is saved on the local hard drive under: %HOME%\Local Settings\Application Data\%seven-digit random character string% .exe Registry The following registry key is added: – HKCU\SessionInformation • "24hrs"=dword:4ddba780 The following registry key is changed: – HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon New value: • "userinit"= %SYSDIR% \userinit.exe,%malware execution directory% \%executed file% .exe -init "Taskman" = %HOME%\\Application Data\\%random character string% .exe -tman Backdoor The following port is opened: – iexplore.exe on TCP port in order to provide backdoor capabilities. Contact server: The following: • check**********.net As a result it may send information and remote control could be provided. Sends information about: • Information about the Windows operating system Remote control capabilities: • Download file • Execute file • Visit a website Injection – It injects itself as a remote thread into a process. Process name: • iexplorer.exe Miscellaneous Mutex: It creates the following Mutex: • t2fyowming File details Programming language: The malware program was written in MS Visual C++.
Description inserted by Ana Maria Niculescu on Tuesday, November 15, 2011 Description updated by Ana Maria Niculescu on Tuesday, November 15, 2011
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