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Malware_e81429b4f7


Trojan.Win32.Generic!BT (VIPRE), 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

MD5: e81429b4f7182be025ab77d8f17a128b

SHA1: 913eae8ca4c42275ac0e73b0f421368c8e254633

SHA256: 408bf3d0934926a841427d4221c3dde81e6b41f9415c6792494457aa1d88fc64

SSDeep: 3072:YhVjK0 AfVCvTXPrNApbmy6QhrIFCXMCFV9n6e3NQmeHyTbbgLL7RGRHtD6 o9vI:EVaAfqPrNsXc/SF6jH0Gy1eJM

Size: 270848 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2014-02-05 20:13:35

Analyzed on: WindowsXP SP3 32-bit

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

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

wuauclt.exe:344
Reader_sl.exe:1064
{56b9847d-84c6-cb43-0f57-43d056b9847d}.exe:1320
{56b9847d-84c6-cb43-0f57-43d056b9847d}.exe:1752
{56b9847d-84c6-cb43-0f57-43d056b9847d}.exe:332
%original file name%.exe:604
%original file name%.exe:440
%original file name%.exe:2020
000565E5.exe:384
000565E5.exe:1248
jusched.exe:1056

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

minerd.exe:212
notepad.exe:1208
000565E5.exe:1756

File activity

The process wuauclt.exe:344 makes changes in the file system.


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

%WinDir%\SoftwareDistribution\DataStore\Logs\edb.chk (100 bytes)
%WinDir%\SoftwareDistribution\DataStore\Logs\edb.log (3576 bytes)
%WinDir%\SoftwareDistribution\DataStore\DataStore.edb (100 bytes)

The Trojan deletes the following file(s):

%WinDir%\SoftwareDistribution\DataStore\Logs\tmp.edb (0 bytes)

The process %original file name%.exe:2020 makes changes in the file system.


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

%Documents and Settings%\%current user%\Start Menu\Programs\Startup\{56b9847d-84c6-cb43-0f57-43d056b9847d}.exe (270 bytes)

The process 000565E5.exe:1756 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\minerd.exe (1281 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\pthreadGC2.dll (673 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\libcurl-4.dll (1727 bytes)

The process jusched.exe:1056 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\jusched.log (347 bytes)

Registry activity

The process Reader_sl.exe:1064 makes changes in the system registry.


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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-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\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\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

The process minerd.exe:212 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D0 B3 F4 80 A9 72 BB 7C E4 13 2F BF C7 B0 EE 12"

The process {56b9847d-84c6-cb43-0f57-43d056b9847d}.exe:1320 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F2 93 86 91 8A 2D 72 34 B6 4B CC 46 1C 8E B5 7E"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1391624015"

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

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "{56b9847d-84c6-cb43-0f57-43d056b9847d}.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Startup" = "%Documents and Settings%\%current user%\Start Menu\Programs\Startup"

The process {56b9847d-84c6-cb43-0f57-43d056b9847d}.exe:1752 makes changes in the system registry.


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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Startup" = "%Documents and Settings%\%current user%\Start Menu\Programs\Startup"

The process {56b9847d-84c6-cb43-0f57-43d056b9847d}.exe:332 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7F 79 B5 54 E2 64 FE C7 65 8E 7B 3F 8B EE D3 88"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1391624015"
"Name" = "{56b9847d-84c6-cb43-0f57-43d056b9847d}.exe"

The process notepad.exe:1208 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BE A3 9B 50 6B 9F 49 6A 07 DB 9B 91 A5 4D CF E9"

The process %original file name%.exe:604 makes changes in the system registry.


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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Startup" = "%Documents and Settings%\%current user%\Start Menu\Programs\Startup"

The process %original file name%.exe:440 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BF A1 A6 EF 96 B5 98 0D A5 28 4E C4 BF EC 4A BF"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1391624015"
"Name" = "%original file name%.exe"

The process %original file name%.exe:2020 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "39 75 7F 59 5D 2B 4E A5 AA 5C A7 59 B0 4B B0 F7"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1391624015"

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

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "%original file name%.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Startup" = "%Documents and Settings%\%current user%\Start Menu\Programs\Startup"

The process 000565E5.exe:1248 makes changes in the system registry.


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


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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"WINSXS32"

Network activity (URLs)

URL IP
hxxp://www.rekurigo.com/223.197.12.164
hxxp://www2.0zz0.com/2014/02/13/22/802311435.png72.55.188.211
hxxp://www13.0zz0.com/2014/03/01/16/978019914.png67.205.96.37
ealorumlae.org205.209.131.98
www.hyardu.org46.226.105.252


HOSTS file anomalies

No changes have been detected.

Rootkit activity

The Trojan installs the following user-mode hooks in WS2_32.dll:

send

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

DbgUiRemoteBreakin
ZwSetValueKey
NtResumeThread
NtQueryDirectoryFile

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

    wuauclt.exe:344
    {56b9847d-84c6-cb43-0f57-43d056b9847d}.exe:1320
    {56b9847d-84c6-cb43-0f57-43d056b9847d}.exe:1752
    {56b9847d-84c6-cb43-0f57-43d056b9847d}.exe:332
    %original file name%.exe:604
    %original file name%.exe:440
    %original file name%.exe:2020
    000565E5.exe:384
    000565E5.exe:1248

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

    %WinDir%\SoftwareDistribution\DataStore\Logs\edb.chk (100 bytes)
    %WinDir%\SoftwareDistribution\DataStore\Logs\edb.log (3576 bytes)
    %WinDir%\SoftwareDistribution\DataStore\DataStore.edb (100 bytes)
    %Documents and Settings%\%current user%\Start Menu\Programs\Startup\{56b9847d-84c6-cb43-0f57-43d056b9847d}.exe (270 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\minerd.exe (1281 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\pthreadGC2.dll (673 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\libcurl-4.dll (1727 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\jusched.log (347 bytes)

  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