Win32.HLLW.Autohit.15190
Added to the Dr.Web virus database:
2014-07-20
Virus description added:
2014-07-20
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe csrcs.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'csrcs' = '<SYSTEM32>\csrcs.exe'
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
Creates and executes the following:
Executes the following:
- '<SYSTEM32>\ping.exe' -n 5 -w 250 127.0.0.1
- '<SYSTEM32>\cmd.exe' /c %TEMP%\suicide.bat
Modifies file system :
Creates the following files:
- %TEMP%\~ip.tmp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\checkip.dyndns[1].0260086525
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\whatismyip[1].9318117022
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\whatismyip[1].5970524701
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\checkip.dyndns[1].0142035652
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\n09230945[1].asp
- <SYSTEM32>\csrcs.exe
- %TEMP%\bjoahba
- %TEMP%\aut1.tmp
- %TEMP%\aut2.tmp
- <SYSTEM32>\autorun.inf
- %TEMP%\suicide.bat
- %TEMP%\ltiqmki
Sets the 'hidden' attribute to the following files:
- <SYSTEM32>\autorun.inf
- <SYSTEM32>\csrcs.exe
Deletes the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\n09230945[1].asp
- %TEMP%\~ip.tmp
- %TEMP%\bjoahba
- %TEMP%\aut1.tmp
- %TEMP%\ltiqmki
- %TEMP%\aut2.tmp
Deletes itself.
Network activity:
Connects to:
- 'ch###hu.or.tp':2547
- 'ma###dro.or.tp':2547
- 'su####.akakapatama.com':2547
- 'www.wh###smyip.com':80
- 'ch####p.dyndns.org':80
TCP:
HTTP GET requests:
- www.wh###smyip.com/?rn#########################################
- ch####p.dyndns.org/?rn########################################
- www.wh###smyip.com/automation/n09230945.asp
- ch####p.dyndns.org/?rn#########################################
UDP:
- DNS ASK ch###hu.or.tp
- DNS ASK ma###dro.or.tp
- DNS ASK su####.akakapatama.com
- DNS ASK www.wh###smyip.com
- DNS ASK ch####p.dyndns.org
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