Trojan.Win32.Qkkbal_72f3eea7c1

by malwarelabrobot on August 24th, 2013 in Malware Descriptions.

Trojan.Win32.Jorik.Agent.vse (Kaspersky), Trojan.Win32.Jorik!IK (Emsisoft), Trojan.Win32.Qkkbal.FD, mzpefinder_pcap_file.YR, TrojanLoadMoney.YR, GenericIRCBot.YR, TrojanDownloaderVundo.YR (Lavasoft MAS)
Behaviour: Trojan-Downloader, Trojan, IRCBot


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: 72f3eea7c17e453919cd38b528870682
SHA1: 8194460200eaa1ae9bf9db8062cc515c951348d3
SHA256: 1ab11a80f20077c4b1fbb1228a3068cc0f034d199447d2afe96c3d13bc959458
SSDeep: 3072:cDKW1LgppLRHMY0TBfJvjcTp5XhzdfGy2YQ:cDKW1Lgbdl0TBBvjc/hzpGya
Size: 164352 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2012-07-14 01:47:16


Summary:

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

Payload

Behaviour Description
IRCBot A bot can communicate with command and control servers via IRC channel.


Process activity

The Trojan creates the following process(es):

DO1QWAIpux5.exe:1068
72f3eea7c17e453919cd38b528870682.exe:740

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

DO1QWAIpux5.exe:1284

File activity

The process DO1QWAIpux5.exe:1068 makes changes in a file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (1960 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\0.ae5rj (43 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\0.ae5rj (0 bytes)

The process DO1QWAIpux5.exe:1284 makes changes in a file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\NTUSER.DAT (6884 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT.LOG (9656 bytes)
%System%\config\software (6911 bytes)
%System%\config\SOFTWARE.LOG (14936 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\I174982854.bat (23 bytes)

The Trojan deletes the following file(s):

%WinDir%\174982854\smss.exe (0 bytes)

The process 72f3eea7c17e453919cd38b528870682.exe:740 makes changes in a file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Microsoft Services\csrss.exe (673 bytes)

Registry activity

The process DO1QWAIpux5.exe:1068 makes changes in a system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5B 10 F0 05 45 11 2F 46 19 E5 E5 21 0E CE CF F0"

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

[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 DO1QWAIpux5.exe:1284 makes changes in a system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "73 CF C3 44 92 B2 55 05 0C FF D9 B0 34 EE 02 93"

[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"

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"Hidden" = "2"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoFolderOptions" = "1"

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

[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"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoWindowsUpdate" = "1"

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"I174982854.bat" = "I174982854"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce]
"*174982854" = "%WinDir%\174982854\smss.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
"*174982854" = "%WinDir%\174982854\smss.exe"

The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

The Trojan 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 Trojan 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 Trojan deletes the following value(s) in system registry:
The Trojan disables automatic startup of the application by deleting the following autorun value:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
"*174982854"

The process 72f3eea7c17e453919cd38b528870682.exe:740 makes changes in a system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "94 7F B1 1E F4 55 FF D1 3B 3C 83 BA 5D 12 8C 65"

[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"

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

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

[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"

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

[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"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Application Data\Microsoft Services]
"csrss.exe" = "Host Process for Windows Services"

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

The Trojan 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 Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

The Trojan 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"

Network activity (URLs)

URL IP
hxxp://botty.ownz.su/loadi/exec.php?mode=con
hxxp://cy.ownz.su/cgsse.exe (Malicious)


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):

    DO1QWAIpux5.exe:1068
    72f3eea7c17e453919cd38b528870682.exe:740

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

    %Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (1960 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\0.ae5rj (43 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT (6884 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT.LOG (9656 bytes)
    %System%\config\software (6911 bytes)
    %System%\config\SOFTWARE.LOG (14936 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\I174982854.bat (23 bytes)
    %Documents and Settings%\%current user%\Application Data\Microsoft Services\csrss.exe (673 bytes)

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

    [HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce]
    "*174982854" = "%WinDir%\174982854\smss.exe"

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
    "*174982854" = "%WinDir%\174982854\smss.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.