PUP.Win32.BitcoinMiner_c4f0cdcd26

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The PUP creates the following process(es):

UFAMiner.exe:168

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

%original file name%.exe:676

File activity

The process %original file name%.exe:676 makes changes in the file system.

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

%Documents and Settings%\%current user%\Application Data\UFAMiner.exe (27328 bytes)
%Documents and Settings%\%current user%\Application Data\openssl.dll (66452 bytes)
%Documents and Settings%\%current user%\Application Data\usft_ext.dll (64932 bytes)
%Documents and Settings%\%current user%\Application Data\coinutil.dll (6080 bytes)
%Documents and Settings%\%current user%\Application Data\miner.dll (37660 bytes)
%Documents and Settings%\%current user%\Application Data\mpir.dll (10372 bytes)
%Documents and Settings%\%current user%\Application Data\phatk.cl (388 bytes)

The process UFAMiner.exe:168 makes changes in the file system.

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

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)

Registry activity

The process %original file name%.exe:676 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "88 DA 1D E8 7D EA 6C AD A2 83 82 4B 42 02 12 7F"

[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\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Application Data]
"UFAMiner.exe" = "VLC media player 2.0.5"

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"AdobeAir_ProductUpdates" = "%Documents and Settings%\%current user%\Application Data\\Loader.exe"

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

"IntranetName" = "1"

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

"ProxyBypass" = "1"

The process UFAMiner.exe:168 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "93 63 87 20 AA 4F 30 F3 FF F6 45 F0 FC 0D AA A2"

[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"

Network activity (URLs)

URL	IP
hxxp://192.40.57.179/sov_9292/coinutil.dll (Malicious)
hxxp://192.40.57.179/sov_9292/miner.dll (Malicious)
hxxp://192.40.57.179/sov_9292/mpir.dll (Malicious)
hxxp://192.40.57.179/sov_9292/openssl.dll (Malicious)
hxxp://192.40.57.179/sov_9292/phatk.cl
hxxp://192.40.57.179/sov_9292/usft_ext.dll (Malicious)

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):

   UFAMiner.exe:168

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

   %Documents and Settings%\%current user%\Application Data\UFAMiner.exe (27328 bytes)
   %Documents and Settings%\%current user%\Application Data\openssl.dll (66452 bytes)
   %Documents and Settings%\%current user%\Application Data\usft_ext.dll (64932 bytes)
   %Documents and Settings%\%current user%\Application Data\coinutil.dll (6080 bytes)
   %Documents and Settings%\%current user%\Application Data\miner.dll (37660 bytes)
   %Documents and Settings%\%current user%\Application Data\mpir.dll (10372 bytes)
   %Documents and Settings%\%current user%\Application Data\phatk.cl (388 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)

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

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "AdobeAir_ProductUpdates" = "%Documents and Settings%\%current user%\Application Data\\Loader.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