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Trojan.Generic.17283692_943253e069


Trojan.Win32.Inject.aafkb (Kaspersky), Trojan.Generic.17283692 (B) (Emsisoft), Trojan.Generic.17283692 (AdAware), Backdoor.Win32.Farfli.FD, Backdoor.Win32.PcClient.FD (Lavasoft MAS)Behaviour: Trojan, Backdoor

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

Summary

MD5: 943253e069fd6ceecf3468ff30701892

SHA1: 96cb7e8af6c9977dd245e9199ab133c1c6589728

SHA256: 35d013427faa0e16e78b1b164f896cc78cc4dc3e0eebf0174e9daf5516c63bdb

SSDeep: 12288:SQfXWJsW7lerECtu4aLgbqu6khVc0qI7oe3gPqWelbKS2K732LZRvdNCxx9eSG:SQv perrOUj6k7ZqC30jSTj2L3X4qS

Size: 983040 bytes

File type: EXE

Platform: WIN32

Entropy: Probably Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2013-08-22 07:01:48

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):

wscript.exe:1144
%original file name%.exe:1552
rundll32.exe:1824
dJNOYcYKDVGJgUUWgCJhC.cmd:344
dumprep.exe:204
dumprep.exe:1416

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

svchost.exe:1176

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

The process %original file name%.exe:1552 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\IXP000.TMP\dJNOYcYKDVGJgUUWgCJ (803 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\cAcVVLEUOOiP (5524 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\dJNOYcYKDVGJgUUWgCJhC.cmd (13304 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\dJNOYcYKDVGJgUUWgCJ (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\cAcVVLEUOOiP (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\dJNOYcYKDVGJgUUWgCJhC.cmd (0 bytes)

The process dJNOYcYKDVGJgUUWgCJhC.cmd:344 makes changes in the file system.


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

%Documents and Settings%\%current user%\Application Data\dJNOYcYKDVGJgUUWgCJ (48 bytes)
%Documents and Settings%\%current user%\Application Data\cAcVVLEUOOiP (1425 bytes)
%Documents and Settings%\%current user%\Application Data\dJNOYcYKDVGJgUUWgCJhC.cmd (5441 bytes)

The process dumprep.exe:204 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\WER8feb.dir00\svchost.exe.mdmp (65793 bytes)

The process dumprep.exe:1416 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\WER8feb.dir00\svchost.exe.hdmp (117780 bytes)

Registry activity

The process wscript.exe:1144 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "AA A1 84 18 26 A5 36 AC A9 85 9D 5C ED 7F 41 33"

[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\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"

The process %original file name%.exe:1552 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "07 8E D1 65 76 39 E8 E7 1B BB C9 25 2E 7B C5 DF"

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\RunOnce]
"wextract_cleanup0" = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\"

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]
"wextract_cleanup0"

The process rundll32.exe:1824 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "50 0D B4 3A E3 F0 A3 52 F9 D0 7D 3B 19 A7 2B 4E"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%System%]
"svchost.exe" = "Generic Host Process for Win32 Services"

[HKLM\System\CurrentControlSet\Control\Session Manager\AppCompatibility]
"AppCompatCache" = "EF BE AD DE 60 00 00 00 00 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers\%System%]
"svchost.exe" = "EnableNXShowUI"

The process dJNOYcYKDVGJgUUWgCJhC.cmd:344 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F5 3D 18 C8 2D 7A 9E EF 9C A5 33 35 41 C2 18 0E"

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

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

[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"

The process dumprep.exe:204 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5C 7F 57 EC 16 ED BA 13 80 B3 E8 FE B6 ED 1F B7"

The process dumprep.exe:1416 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "63 D7 13 E9 F6 CA E1 10 24 27 22 81 E9 05 AF 4F"

Dropped PE files

MD5 File path
71d8f6d5dc35517275bc38ebcc815f9fc:\Documents and Settings\"%CurrentUserName%"\Application Data\dJNOYcYKDVGJgUUWgCJhC.cmd

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):

    wscript.exe:1144
    %original file name%.exe:1552
    rundll32.exe:1824
    dJNOYcYKDVGJgUUWgCJhC.cmd:344
    dumprep.exe:204
    dumprep.exe:1416

  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\IXP000.TMP\dJNOYcYKDVGJgUUWgCJ (803 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\cAcVVLEUOOiP (5524 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\dJNOYcYKDVGJgUUWgCJhC.cmd (13304 bytes)
    %Documents and Settings%\%current user%\Application Data\dJNOYcYKDVGJgUUWgCJ (48 bytes)
    %Documents and Settings%\%current user%\Application Data\cAcVVLEUOOiP (1425 bytes)
    %Documents and Settings%\%current user%\Application Data\dJNOYcYKDVGJgUUWgCJhC.cmd (5441 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\WER8feb.dir00\svchost.exe.mdmp (65793 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\WER8feb.dir00\svchost.exe.hdmp (117780 bytes)

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

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
    "wextract_cleanup0" = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\"

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

Static Analysis

VersionInfo

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version:
File Description:
Comments:
Language: Language Neutral

Company Name: Product Name: Product Version: Legal Copyright: Legal Trademarks: Original Filename: Internal Name: File Version: File Description: Comments: Language: Language Neutral

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text409626060261124.42534ec6c00d0dbffd0aaf40d629cdc5fbbf7
.data32768679610242.20139317f8a934ee443eee01c2a315bde9ca1
.idata40960421646083.49941d8675ba112ef922c6057a02546757a1a
.rsrc491529450049451524.86517072aa5de87724cdaee29b4bd6cbb9e2
.reloc995328503851202.5804383de2f9b2c95be6fea06bced7e8a058e

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

The Trojan connects to the servers at the folowing location(s):

Strings from Dumps

svchost.exe_1176:

.text

.text

`.data

`.data

.rsrc

.rsrc

ADVAPI32.dll

ADVAPI32.dll

KERNEL32.dll

KERNEL32.dll

NTDLL.DLL

NTDLL.DLL

RPCRT4.dll

RPCRT4.dll

NETAPI32.dll

NETAPI32.dll

ole32.dll

ole32.dll

ntdll.dll

ntdll.dll

RegCloseKey

RegCloseKey

RegOpenKeyExW

RegOpenKeyExW

GetProcessHeap

GetProcessHeap

NtOpenKey

NtOpenKey

svchost.pdb

svchost.pdb

\PIPE\

\PIPE\

Software\Microsoft\Windows NT\CurrentVersion\Svchost

Software\Microsoft\Windows NT\CurrentVersion\Svchost

\Registry\Machine\System\CurrentControlSet\Control\SecurePipeServers\

\Registry\Machine\System\CurrentControlSet\Control\SecurePipeServers\

5.1.2600.5512 (xpsp.080413-2111)

5.1.2600.5512 (xpsp.080413-2111)

svchost.exe

svchost.exe

Windows

Windows

Operating System

Operating System

5.1.2600.5512

5.1.2600.5512

svchost.exe_1176_rwx_000A9000_00001000:

%s:%u

%s:%u

svchost.exe_1176_rwx_000D5000_00003000:

.?AV?$TinyList@VWindowEntry@VNCWindows@@@@

.?AV?$TinyList@VWindowEntry@VNCWindows@@@@

{4A4286B0-3652-472E-937F-0BD1B35D4E5B}

{4A4286B0-3652-472E-937F-0BD1B35D4E5B}

%Documents and Settings%\%current user%\Application Data\Microsoft\{4A4286B0-3652-472E-937F-0BD1B35D4E5B}

%Documents and Settings%\%current user%\Application Data\Microsoft\{4A4286B0-3652-472E-937F-0BD1B35D4E5B}

%Documents and Settings%\%current user%\Application Data\Microsoft\{4A4286B0-3652-472E-937F-0BD1B35D4E5B}\dd4b21e9.exe

%Documents and Settings%\%current user%\Application Data\Microsoft\{4A4286B0-3652-472E-937F-0BD1B35D4E5B}\dd4b21e9.exe

\??\%Documents and Settings%\%current user%\Application Data\Microsoft\{4A4286B0-3652-472E-937F-0BD1B35D4E5B}

\??\%Documents and Settings%\%current user%\Application Data\Microsoft\{4A4286B0-3652-472E-937F-0BD1B35D4E5B}

%System%\wscript.exe

%System%\wscript.exe

\REGISTRY\USER\S-1-5-21-1844237615-1960408961-1801674531-1003\SOFTWARE\Microsoft\Windows\CurrentVersion

\REGISTRY\USER\S-1-5-21-1844237615-1960408961-1801674531-1003\SOFTWARE\Microsoft\Windows\CurrentVersion

\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion

\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion

\REGISTRY\USER\S-1-5-21-1844237615-1960408961-1801674531-1003\Software\Microsoft\Windows\CurrentVersion\Run

\REGISTRY\USER\S-1-5-21-1844237615-1960408961-1801674531-1003\Software\Microsoft\Windows\CurrentVersion\Run

\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run

\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run

\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion

\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion

%Documents and Settings%\%current user%\Application Data

%Documents and Settings%\%current user%\Application Data

%WinDir%\System32

%WinDir%\System32

svchost.exe_1176_rwx_01000000_00006000:

.text

.text

`.data

`.data

.rsrc

.rsrc

ADVAPI32.dll

ADVAPI32.dll

KERNEL32.dll

KERNEL32.dll

NTDLL.DLL

NTDLL.DLL

RPCRT4.dll

RPCRT4.dll

NETAPI32.dll

NETAPI32.dll

ole32.dll

ole32.dll

ntdll.dll

ntdll.dll

RegCloseKey

RegCloseKey

RegOpenKeyExW

RegOpenKeyExW

GetProcessHeap

GetProcessHeap

NtOpenKey

NtOpenKey

svchost.pdb

svchost.pdb

\PIPE\

\PIPE\

Software\Microsoft\Windows NT\CurrentVersion\Svchost

Software\Microsoft\Windows NT\CurrentVersion\Svchost

\Registry\Machine\System\CurrentControlSet\Control\SecurePipeServers\

\Registry\Machine\System\CurrentControlSet\Control\SecurePipeServers\

5.1.2600.5512 (xpsp.080413-2111)

5.1.2600.5512 (xpsp.080413-2111)

svchost.exe

svchost.exe

Windows

Windows

Operating System

Operating System

5.1.2600.5512

5.1.2600.5512

rundll32.exe_1824:

.text

.text

`.data

`.data

.rsrc

.rsrc

msvcrt.dll

msvcrt.dll

KERNEL32.dll

KERNEL32.dll

NTDLL.DLL

NTDLL.DLL

GDI32.dll

GDI32.dll

USER32.dll

USER32.dll

IMAGEHLP.dll

IMAGEHLP.dll

rundll32.pdb

rundll32.pdb

.....eZXnnnnnnnnnnnn3

.....eZXnnnnnnnnnnnn3

....eDXnnnnnnnnnnnn3

....eDXnnnnnnnnnnnn3

...eDXnnnnnnnnnnnn,

...eDXnnnnnnnnnnnn,

.eDXnnnnnnnnnnnn,

.eDXnnnnnnnnnnnn,

%Xnnnnnnnnnnnnnnn1

%Xnnnnnnnnnnnnnnn1

O3$dS7"%U9

O3$dS7"%U9

.manifest

.manifest

5.1.2600.5512 (xpsp.080413-2105)

5.1.2600.5512 (xpsp.080413-2105)

RUNDLL.EXE

RUNDLL.EXE

Windows

Windows

Operating System

Operating System

5.1.2600.5512

5.1.2600.5512

YThere is not enough memory to run the file %s.

YThere is not enough memory to run the file %s.

Please close other windows and try again.

Please close other windows and try again.

9The file %s or one of its components could not be opened.

9The file %s or one of its components could not be opened.

0The file %s or one of its components cannot run.

0The file %s or one of its components cannot run.

MThe file %s or one of its components requires a different version of Windows.

MThe file %s or one of its components requires a different version of Windows.

UThe file %s or one of its components cannot run in standard or enhanced mode Windows.3Another instance of the file %s is already running./An exception occurred while trying to run "%s"

UThe file %s or one of its components cannot run in standard or enhanced mode Windows.3Another instance of the file %s is already running./An exception occurred while trying to run "%s"

Error in %s

Error in %s

Missing entry:%s

Missing entry:%s

Error loading %s

Error loading %s