PUP.Win32.BitcoinMiner_c4f0cdcd26

by malwarelabrobot on December 2nd, 2013 in Malware Descriptions.

Gen:Variant.Kazy.193904 (BitDefender), Trojan:MSIL/Remdobe.E (Microsoft), Trojan.DownLoader10.56545 (DrWeb), Gen:Variant.Kazy.193904 (B) (Emsisoft), Artemis!C4F0CDCD26AF (McAfee), Trojan.Agent4 (Ikarus), Gen:Variant.Kazy.193904 (FSecure), Generic35.ALKB (AVG), PUP.Win32.BitcoinMiner.FD, mzpefinder_pcap_file.YR (Lavasoft MAS)
Behaviour: Trojan, PUP


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary
Technical Details
Removal Recommendations

MD5: c4f0cdcd26af7d1c6d939d3c48d0a70a
SHA1: 78d011532b24e65f314e8cab2dd5a268266f9da0
SHA256: 817bfc43b01a8984d68344371caa8e49aec2e901375e10cc12064f3804945f9a
SSDeep: 384:YxLb6Zck/JckrZJS2Si054aUTT8LEihHGsDLacW9C4T4RpQrvL:YxyS9E8msS9spQTL
Size: 15360 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: Premium Installer
Created at: 2013-11-27 21:41:07


Summary:

PUP. Potentially Unwanted Program. An application that does not display malicious behavior yet is installed without having first sought affirmative user consent for installation. Users may not realize, due to the nature of the installation procedure, that an application they have not explicitly agreed to has been installed. This category can also be used to classify other applications which in a certain context can be wanted e.g. remote administration tools or IRC clients.

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


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.

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