Trojan.Win32.Alureon_4089cce099

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

7.tmp:496
msiexec.exe:1948
%original file name%.exe:1160

The Trojan injects its code into the following process(es):

%original file name%.exe:1768

File activity

The process 7.tmp:496 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\6L4ZORMH\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\8LARCP2V\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\0T29MLY7\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\CP6NWPQB\desktop.ini (67 bytes)

The process %original file name%.exe:1768 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\507CF\F2C6.07C (913 bytes)
%Program Files%\LP\1365\7.tmp (12588 bytes)
%System%\config\software (963 bytes)
%System%\config\SOFTWARE.LOG (2467 bytes)
%Program Files%\LP\1365\C29.exe (271362 bytes)

Registry activity

The process 7.tmp:496 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7E DA 50 DD 62 DE 10 8F 07 39 14 E8 29 C2 7F E3"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

[HKCU\Software\WinRAR]
"HWID" = "7B 31 34 46 30 31 41 43 45 2D 30 35 42 45 2D 34"

The process msiexec.exe:1948 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "48 CF F9 A2 14 10 96 0A 1B 17 B8 2C 3E AB 96 CE"

The process %original file name%.exe:1768 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5F 86 3D 2D 1B 59 D7 4E 8D 6C BF 71 D8 65 64 18"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"C29.exe" = "%Program Files%\LP\1365\C29.exe"

Automatic startup of the following service is disabled:

[HKLM\System\CurrentControlSet\Services\wscsvc]
"Start" = "3"

The process %original file name%.exe:1160 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E1 42 27 23 73 B5 86 B6 59 69 AF B0 6F 24 01 9D"

Network activity (URLs)

URL	IP
hxxp://e6845.ce.akamaiedge.net/pca3-g2.crl
hxxp://e6845.ce.akamaiedge.net/CSC3-2009.crl
hxxp://e6845.ce.akamaiedge.net/pca3.crl
hxxp://e6845.ce.akamaiedge.net/CSC3-2009-2.crl
hxxp://tri-countymech.com/g/134.jpg?pr=gHZutDyMv5rJfyG1J8K+1MWCJbP4lltXIA==	184.168.221.25
hxxp://a26.d.akamai.net/msdownload/update/v3/static/trustedr/en/authrootseq.txt
hxxp://seeworldonlines.com/logo.png?tq=gL5HtzoYwLzEpUb5fU3HxcW3A/U6EsazybMRtyFa0umG8Ar0SsSA/gSoSEU=&pr=41	69.43.161.170
hxxp://a26.d.akamai.net/msdownload/update/v3/static/trustedr/en/authrootstl.cab
hxxp://webhomefordomains.com/logo.png?tq=gKZEtzoYwLzEvUb5dQzRsrCqA/AtTca3l74EgC5OjrPGpgfib1XGp5zpRPksUt+A/gSoSEU=&pr=41	195.22.26.254
hxxp://ourdatatransfers.com/gate.php (ET RBN Known Russian Business Network IP (296) )	69.43.161.179
hxxp://www.google.com/	173.194.43.81
hxxp://www.google.ca/?gws_rd=cr&ei=eZ6RUpeaLLGA2QXJyIGQAQ	173.194.43.87
csc3-2009-2-crl.verisign.com	23.61.69.163
crl.verisign.com	23.61.69.163
www.download.windowsupdate.com	23.3.98.8
csc3-2009-crl.verisign.com	23.61.69.163

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

1. Click (here) to download and install Ad-Aware Free Antivirus.
2. Update the definition files.
3. Run a full scan of your computer.

Manual removal*

1. Terminate malicious process(es) (How to End a Process With the Task Manager):

   7.tmp:496
   %original file name%.exe:1160

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:

   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\6L4ZORMH\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\8LARCP2V\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\0T29MLY7\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\CP6NWPQB\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Application Data\507CF\F2C6.07C (913 bytes)
   %Program Files%\LP\1365\7.tmp (12588 bytes)
   %System%\config\software (963 bytes)
   %System%\config\SOFTWARE.LOG (2467 bytes)
   %Program Files%\LP\1365\C29.exe (271362 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "C29.exe" = "%Program Files%\LP\1365\C29.exe"

5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
6. Reboot the computer.
   

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

Network Activity

Map

Strings from Dumps