Packed.Win32.Themida_f481d6e05c

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Packed creates the following process(es):

%original file name%.exe:1620

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

Wallhack ESPName.exe:1868
server.exe:1848

File activity

The process %original file name%.exe:1620 makes changes in the file system.

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

%Documents and Settings%\%current user%\Local Settings\Temp\04E2F92B (14 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\server.exe (19996 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Wallhack ESPName.exe (80348 bytes)

The process server.exe:1848 makes changes in the file system.

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

%System%\drivers\etc\hosts (307 bytes)

Registry activity

The process %original file name%.exe:1620 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D7 D4 2F 43 4C 3F 5B 56 DE 97 C2 F6 9C 09 65 5E"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

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

[HKCU\Software\Enigma Protector\42F02EDE1707E5C4-174D232056776564\1D23E801FF916F1C-DF69CE3484AE41BB]
"BE3B4FE6" = "8C 80 15 C5 73 B8 8F 52 D8 B7 E0 55 2C 60"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

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

"Personal" = "%Documents and Settings%\%current user%\My Documents"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Local Settings\Temp]
"server.exe" = "µTorrent"
"Wallhack ESPName.exe" = "www.pekalongan-community.com"

The Packed modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"

The Packed modifies IE settings for security zones to map all urls to the Intranet Zone:

"IntranetName" = "1"

The Packed modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:

"ProxyBypass" = "1"

The process Wallhack ESPName.exe:1868 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "EF 42 88 79 FC 9F 5D 38 CB 19 94 E6 51 72 10 99"

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

The process server.exe:1848 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C4 E6 72 2A D0 7E 3E 94 38 34 CE F1 11 D2 AE 72"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableRegistryTools" = "1"

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"(Default)" = "%Documents and Settings%\%current user%\Local Settings\Temp\server.exe"

Task Manager is disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableTaskMgr" = "1"

Network activity (URLs)

No activity has been detected.

HOSTS file anomalies

The Packed modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 307 bytes in size. The following strings are added to the hosts file listed below:

127.0.0.1	www.virustotal.com
127.0.0.1	virustotal.com
127.0.0.1	www.novirusthanks.org
127.0.0.1	novirusthanks.org
127.0.0.1	www.virscan.org
127.0.0.1	virscan.org
127.0.0.1	www.virusscan.jotti.org
127.0.0.1	virusscan.jotti.org
127.0.0.1	virusscan.jotti.org

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):

   %original file name%.exe:1620
   

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

   %Documents and Settings%\%current user%\Local Settings\Temp\04E2F92B (14 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\server.exe (19996 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\Wallhack ESPName.exe (80348 bytes)
   %System%\drivers\etc\hosts (307 bytes)

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

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "(Default)" = "%Documents and Settings%\%current user%\Local Settings\Temp\server.exe"

5. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
   
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