PUP.Win32.BitcoinMiner_0ae095bfa1

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The PUP creates the following process(es):

attrib.exe:1628
UFAMiner.exe:1624

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

%original file name%.exe:1652

File activity

The process %original file name%.exe:1652 makes changes in the file system.

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

%Documents and Settings%\%current user%\Application Data\1236\mpir.dll (11224 bytes)
%Documents and Settings%\%current user%\Application Data\1236\phatk.cl (388 bytes)
%Documents and Settings%\%current user%\Application Data\1236\coinutil.dll (6502 bytes)
%Documents and Settings%\%current user%\Application Data\1236\miner.dll (38252 bytes)
%Documents and Settings%\%current user%\Application Data\1236\UFAMiner.exe (25400 bytes)
%Documents and Settings%\%current user%\Application Data\1236\usft_ext.dll (62912 bytes)
%Documents and Settings%\%current user%\Application Data\1236\openssl.dll (73524 bytes)

Registry activity

The process %original file name%.exe:1652 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A7 5B 4A 39 93 6A 5A 1E C2 37 6B 90 64 05 AA 89"

[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"

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

[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\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Application Data\1236]
"UFAMiner.exe" = "VLC media player 2.0.5"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"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]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "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 local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

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]
"1236" = "%Documents and Settings%\%current user%\Application Data\1236\Loader.exe"

The process attrib.exe:1628 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "22 93 47 E8 60 9B AE 06 80 4A B8 B2 77 D0 05 78"

The process UFAMiner.exe:1624 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "53 4F 22 FA F6 89 5B 9C 8B 5E 9D 28 B5 10 E2 62"

[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/openssl.dll (Malicious)
hxxp://192.40.57.179/sov_9292/phatk.cl
hxxp://192.40.57.179/sov_9292/usft_ext.dll (Malicious)
stratum2.wemineltc.com	5.254.102.163

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):

   attrib.exe:1628
   UFAMiner.exe:1624

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\1236\mpir.dll (11224 bytes)
   %Documents and Settings%\%current user%\Application Data\1236\phatk.cl (388 bytes)
   %Documents and Settings%\%current user%\Application Data\1236\coinutil.dll (6502 bytes)
   %Documents and Settings%\%current user%\Application Data\1236\miner.dll (38252 bytes)
   %Documents and Settings%\%current user%\Application Data\1236\UFAMiner.exe (25400 bytes)
   %Documents and Settings%\%current user%\Application Data\1236\usft_ext.dll (62912 bytes)
   %Documents and Settings%\%current user%\Application Data\1236\openssl.dll (73524 bytes)

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

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "1236" = "%Documents and Settings%\%current user%\Application Data\1236\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