PUP.Win32.BitcoinMiner_7cd0089c64

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The PUP creates the following process(es):

attrib.exe:4016
ctfmon.exe:252
displaydrivers.exe:2884

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

%original file name%.exe:2604

File activity

The process %original file name%.exe:2604 makes changes in the file system.

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

%Documents and Settings%\%current user%\Application Data\Sound\coinutil.dll (4645 bytes)
%Documents and Settings%\%current user%\Application Data\Sound\openssl.dll (53320 bytes)
%Documents and Settings%\%current user%\Application Data\Sound\mpir.dll (15717 bytes)
%Documents and Settings%\%current user%\Application Data\Sound\usft_ext.dll (63267 bytes)
%Documents and Settings%\%current user%\Application Data\Sound\displaydrivers.exe (6462 bytes)
%Documents and Settings%\%current user%\Application Data\Sound\phatk.cl (678 bytes)
%Documents and Settings%\%current user%\Application Data\Sound\miner.dll (21708 bytes)

The process displaydrivers.exe:2884 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 attrib.exe:4016 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "23 9F D9 AE A7 00 C4 35 B0 67 BF FD AB B3 CB CC"

The process %original file name%.exe:2604 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B2 1B 57 E1 35 14 18 E7 A3 1E 12 F5 68 33 A1 1C"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f3-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{773a730e-74fb-11e2-b597-000c293bdf2f}]
"BaseClass" = "Drive"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f2-7454-11e2-b4cd-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\{fdd9f6f5-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Application Data\Sound]
"displaydrivers.exe" = "coin-miner"

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

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

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]
"BrowserCheck" = "%Documents and Settings%\%current user%\Application Data\Sound\ethernetdriver.exe"

The process ctfmon.exe:252 makes changes in the system registry.

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

The PUP disables automatic startup of the application by deleting the following autorun value:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"internat.exe"

The process displaydrivers.exe:2884 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "49 08 20 E3 8C B0 7B 54 71 9E 15 80 40 D2 EB 55"

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

Network activity (URLs)

URL	IP
hxxp://192.40.57.179/soviufa/coin-miner.exe (ET POLICY PE EXE or DLL Windows file download , Malicious)
hxxp://192.40.57.179/soviufa/coinutil.dll (ET POLICY PE EXE or DLL Windows file download , Malicious)
hxxp://192.40.57.179/soviufa/miner.dll (ET POLICY PE EXE or DLL Windows file download , Malicious)
hxxp://192.40.57.179/soviufa/mpir.dll (ET POLICY PE EXE or DLL Windows file download , Malicious)
hxxp://192.40.57.179/soviufa/openssl.dll (ET POLICY PE EXE or DLL Windows file download , Malicious)
hxxp://192.40.57.179/soviufa/phatk.cl
hxxp://192.40.57.179/soviufa/usft_ext.dll (ET POLICY PE EXE or DLL Windows file download , 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):

   attrib.exe:4016
   displaydrivers.exe:2884

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\Sound\coinutil.dll (4645 bytes)
   %Documents and Settings%\%current user%\Application Data\Sound\openssl.dll (53320 bytes)
   %Documents and Settings%\%current user%\Application Data\Sound\mpir.dll (15717 bytes)
   %Documents and Settings%\%current user%\Application Data\Sound\usft_ext.dll (63267 bytes)
   %Documents and Settings%\%current user%\Application Data\Sound\displaydrivers.exe (6462 bytes)
   %Documents and Settings%\%current user%\Application Data\Sound\phatk.cl (678 bytes)
   %Documents and Settings%\%current user%\Application Data\Sound\miner.dll (21708 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]
   "BrowserCheck" = "%Documents and Settings%\%current user%\Application Data\Sound\ethernetdriver.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