Trojan.Win32.Scarsi.ufm_2eb25d09c1

by malwarelabrobot on November 28th, 2013 in Malware Descriptions.

Trojan.Win32.Scarsi.ufm (Kaspersky), Trojan.DownLoader10.49250 (DrWeb), CoinMiner.YC (AVG), mzpefinder_pcap_file.YR (Lavasoft MAS)
Behaviour: Trojan


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: 2eb25d09c14eaaa0a430963869be8a27
SHA1: 7484b7e094599a6d9bfa452a1c9dfe6b012079b4
SHA256: 3ab5ac9461666bf60071fa1e94a95b33f12d73b46f37f3b9d2350de30d8fc020
SSDeep: 3072:KBeSpjYoV7VLNSlMxmpNL9PHw Q9rKJSkp5hGOe:K9pjYoVdNSqIrLODF8yZ
Size: 182784 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: Firseria
Created at: 2013-10-30 14:06:12


Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:1808
iAX6in4PzGEGaj.exe:176
iAX6in4PzGEGaj.exe:596

File activity

The process %original file name%.exe:1808 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Windows\iAX6in4PzGEGaj.exe (673 bytes)
%Documents and Settings%\%current user%\Start Menu\Programs\Startup\iAX6in4PzGEGaj.exe (673 bytes)

The process iAX6in4PzGEGaj.exe:596 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\diablo121016.cl (18453 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\pthreadGC2.dll (35673 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\libpdcurses.dll (55565 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\liburl.tmp (135661 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\libblkmaker_jansson-0.1-0.dll (12433 bytes)
%Documents and Settings%\%current user%\Start Menu\Programs\Startup\iAX6in4PzGEGaj.exe (673 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\libeay32.dll (498825 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\libcurl.dll (192597 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\scrypt121016.cl (8129 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\libjansson-4.dll (69481 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\libblkmaker-0.1-0.dll (10324 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\phatk121016.cl (5797 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\poclbm121016.cl (16665 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\diakgcn121016.cl (8577 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\libidn-11.dll (90545 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\zlib1.dll (30777 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\ssleay32.dll (133761 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Application Data\Windows\iAX6in4PzGEGaj.exe (0 bytes)
%Documents and Settings%\%current user%\Start Menu\Programs\Startup\iAX6in4PzGEGaj.exe (0 bytes)

Registry activity

The process %original file name%.exe:1808 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"iAX6in4PzGEGaj" = "%Documents and Settings%\%current user%\Application Data\Windows\iAX6in4PzGEGaj.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"iAX6in4PzGEGaj" = "%Documents and Settings%\%current user%\Application Data\Windows\iAX6in4PzGEGaj.exe"

The process iAX6in4PzGEGaj.exe:176 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "AF 45 6C 79 38 42 89 76 16 ED 6C B6 6F F7 D7 AD"

The process iAX6in4PzGEGaj.exe:596 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"iAX6in4PzGEGaj" = "%Documents and Settings%\%current user%\Application Data\Windows\iAX6in4PzGEGaj.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"iAX6in4PzGEGaj" = "%Documents and Settings%\%current user%\Application Data\Windows\iAX6in4PzGEGaj.exe"

Network activity (URLs)

URL IP
hxxp://91.121.66.158/panel/files/zlib1.dll (Malicious)
hxxp://91.121.66.158/panel/files/diablo121016.cl
hxxp://91.121.66.158/panel/files/miner.exe (Malicious)
hxxp://91.121.66.158/panel/res.php
stratum.mining.eligius.st 23.21.225.111


HOSTS file anomalies

No changes have been detected.

Rootkit activity

The Trojan installs the following user-mode hooks in ntdll.dll:

ZwSetValueKey
NtResumeThread
RtlGetNativeSystemInformation
NtQueryDirectoryFile
ZwOpenProcess
ZwOpenFile
NtEnumerateValueKey
ZwDeleteValueKey
NtCreateFile

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. Scan a system with an anti-rootkit tool.
  2. Terminate malicious process(es) (How to End a Process With the Task Manager):

    %original file name%.exe:1808
    iAX6in4PzGEGaj.exe:176
    iAX6in4PzGEGaj.exe:596

  3. Delete the original Trojan file.
  4. Delete or disinfect the following files created/modified by the Trojan:

    %Documents and Settings%\%current user%\Application Data\Windows\iAX6in4PzGEGaj.exe (673 bytes)
    %Documents and Settings%\%current user%\Start Menu\Programs\Startup\iAX6in4PzGEGaj.exe (673 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\diablo121016.cl (18453 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\pthreadGC2.dll (35673 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\libpdcurses.dll (55565 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\liburl.tmp (135661 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\libblkmaker_jansson-0.1-0.dll (12433 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\libeay32.dll (498825 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\libcurl.dll (192597 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\scrypt121016.cl (8129 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\libjansson-4.dll (69481 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\libblkmaker-0.1-0.dll (10324 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\phatk121016.cl (5797 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\poclbm121016.cl (16665 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\diakgcn121016.cl (8577 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\libidn-11.dll (90545 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\zlib1.dll (30777 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\ssleay32.dll (133761 bytes)

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

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "iAX6in4PzGEGaj" = "%Documents and Settings%\%current user%\Application Data\Windows\iAX6in4PzGEGaj.exe"

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "iAX6in4PzGEGaj" = "%Documents and Settings%\%current user%\Application Data\Windows\iAX6in4PzGEGaj.exe"

  6. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  7. Reboot the computer.

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

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