MD5: dee9fe16865803ebd8263920cf1dcfac
SHA1: 71e5a272b91be617229fba527696e3c205838726
SHA256: 665460b857ac2b211a2aa32347d60e3477a2be2b3123668a77be3cc9a33b267e
SSDeep: 12288:8xTQJW4nwhCcWha12yK4HY9YUVzYKj86s1SR:8xTQg4whPOa125CvUpYOP
Size: 460800 bytes
File type:
Platform:
Entropy:
PEID: ASProtectv123RC1, ASProtect13321Registered, ASProtectv12xNewStrain, UPolyXv05_v6
Company: no certificate found
Created at: no data
Analyzed on: WindowsXP SP3 32-bit

Summary:

Backdoor. Malware that enables a remote control of victim's machine.

Payload

Process activity

The Backdoor creates the following process(es):

%original file name%.exe:252
%original file name%.exe:1124

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

iexplore.exe:2004

File activity

The process %original file name%.exe:252 makes changes in the file system.
The Backdoor deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\x.html (0 bytes)

The process iexplore.exe:2004 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Microsoft\Windows\svcshoste.dat (314 bytes)
%System%\win323\svcshost.exe (3073 bytes)

Registry activity

The process %original file name%.exe:252 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4A 2E 91 50 29 22 FB BC FE 70 EE EA 36 3C FB AB"

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"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\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\XtremeRAT]
"Mutex" = "svcshoste"

The process %original file name%.exe:1124 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "CB CC 2E F6 8C 7F F7 C4 3C 02 6A 2D 08 3B 6A CC"

[HKCR\TypeLib\{3274851D-3EB3-34B8-E22E-F3BD9B7C4791}\1.0\HELPDIR]
"(Default)" = ""

[HKCR\TypeLib\{3274851D-3EB3-34B8-E22E-F3BD9B7C4791}\1.0]
"(Default)" = ""

[HKCR\TypeLib\{3274851D-3EB3-34B8-E22E-F3BD9B7C4791}\1.0\0\win32]
"(Default)" = ""

[HKCU\Software\ASProtect\SpecData]
"0D3FD9710D3FD971" = "0E EC 1D D0 69 0B ED 63 4E 1B 93 34 7C BD 89 2E"

[HKCR\CLSID\{E743CB98-99E1-4688-F6B4-65AB96D4E868}\Version]
"(Default)" = ""

[HKCR\TypeLib\{3274851D-3EB3-34B8-E22E-F3BD9B7C4791}\1.0\FLAGS]
"(Default)" = ""

[HKCR\CLSID\{E743CB98-99E1-4688-F6B4-65AB96D4E868}\TypeLib]
"(Default)" = ""

[HKCR\TypeLib\{3274851D-3EB3-34B8-E22E-F3BD9B7C4791}\1.0\0]
"(Default)" = ""

[HKCR\CLSID\{E743CB98-99E1-4688-F6B4-65AB96D4E868}\ProgID]
"(Default)" = ""

[HKCR\CLSID\{E743CB98-99E1-4688-F6B4-65AB96D4E868}]
"(Default)" = "Ebohe Qexike object"

[HKCR\.key]
"(Default)" = ""

[HKCU\Software\ASProtect\SpecData]
"(Default)" = "0D3FD9710D3FD971"

[HKCR\CLSID\{E743CB98-99E1-4688-F6B4-65AB96D4E868}\InProcServer32]
"(Default)" = ""

[HKCR\TypeLib\{3274851D-3EB3-34B8-E22E-F3BD9B7C4791}]
"(Default)" = ""

The process iexplore.exe:2004 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[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"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 12 00 00 00 01 00 00 00 00 00 00 00"

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

[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"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1208111653"

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

[HKCU\Software\svcshoste]
"ServerName" = "%System%\win323\svcshost.exe"

[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]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "iexplore.exe"

[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

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

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "CE 5C 66 C9 36 8B AB 2C 91 5C D8 08 C7 BE 7B 73"

[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"

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

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

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

[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"

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{8J04GL8D-SN6V-CL8C-1788-4HMF83PQE24W}]
"StubPath" = "%System%\win323\svcshost.exe restart"

[HKCU\Software\svcshoste]
"ServerStarted" = "18/12/2013 03:19:20"

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

The Backdoor 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"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"MIC" = "%System%\win323\svcshost.exe"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"MICRO" = "%System%\win323\svcshost.exe"

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

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

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

"ProxyBypass" = "1"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"microsof" = "%System%\win323\svcshost.exe"

The Backdoor deletes the following value(s) in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"

Network activity (URLs)

No activity has been detected.

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Backdoor's file once a user opens a drive's folder in Windows Explorer.

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:252
   %original file name%.exe:1124
   

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

   %Documents and Settings%\%current user%\Application Data\Microsoft\Windows\svcshoste.dat (314 bytes)
   %System%\win323\svcshost.exe (3073 bytes)

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

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "MIC" = "%System%\win323\svcshost.exe"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "MICRO" = "%System%\win323\svcshost.exe"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "microsof" = "%System%\win323\svcshost.exe"

5. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
   
6. Reboot the computer.
   

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