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Rbot_427f51b0d4


Trojan.Win32.RBot.gz (Kaspersky), mzpefinder_pcap_file.YR, GenericIRCBot.YR, GenericMSNWorm.YR, Rbot.YR, GenericAutorunWorm.YR, BackdoorIRC.YR, Blazebot.YR, GenericProxy.YR (Lavasoft MAS)Behaviour: Trojan, Backdoor, Worm, WormAutorun, IRCBot, MSNWorm, Trojan-Proxy

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

Summary

MD5: 427f51b0d4f30ab51f24883f7461915d

SHA1: fdeafb43e0150c725dea685537a6272e0978a1c0

SHA256: 1399f785bd7f74b4921120fbde36edabfd8ae2ffe69a6f50c56c4f5350b5f5bd

SSDeep: 12288:zhkDgouVA2nxKkorvdRgQriDwOIxmxiZnYQE7PJcE4avNOZ2LD9kvwtgK:5RmJkcoQricOIQxiZY1iavNOZ7wth

Size: 769076 bytes

File type: EXE

Platform: WIN32

Entropy: Not Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2012-01-29 23:32:28

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

Behaviour Description
WormAutorunA worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.
IRCBotA bot can communicate with command and control servers via IRC channel.
MSNWormA worm can spread its copies through the MSN Messanger.
Trojan-ProxyThis program can launch a proxy server (SOCKS4) on a designated TCP port.


Process activity

The Trojan creates the following process(es):

skype.exe:1832
pwfdfje.exe:520
msn.exe:1840
msn.exe:1844
%original file name%.exe:532
%original file name%.exe:1232

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

pwfdfje.exe:996

File activity

The process skype.exe:1832 makes changes in the file system.


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

%Documents and Settings%\%current user%\F22P\msn.exe (10537 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\F22P\__tmp_rar_sfx_access_check_730500 (0 bytes)

The process pwfdfje.exe:996 makes changes in the file system.


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

%Documents and Settings%\%current user%\Cookies\index.dat (964 bytes)
%WinDir%\skype.exe (482067 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OPQNSD2J\1195512955.ms[1] (481864 bytes)
%Documents and Settings%\%current user%\Cookies\Current_User@directxex[1].txt (223 bytes)

The process pwfdfje.exe:520 makes changes in the file system.


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

%Documents and Settings%\%current user%\K50M41.WN2 (601 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (1249 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\K50M41.WN2 (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (0 bytes)

The process msn.exe:1840 makes changes in the file system.


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

%Documents and Settings%\%current user%\Z63D53.BV1 (601 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut3.tmp (1137 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Z63D53.BV1 (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut3.tmp (0 bytes)

The process msn.exe:1844 makes changes in the file system.


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

%WinDir%\csrss.exe (5441 bytes)

The process %original file name%.exe:532 makes changes in the file system.


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

%System%\pwfdfje.exe (5441 bytes)

The process %original file name%.exe:1232 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\aut1.tmp (1249 bytes)
%Documents and Settings%\%current user%\K50M41.WN2 (601 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%\K50M41.WN2 (0 bytes)

Registry activity

The process skype.exe:1832 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "73 95 1D 21 AE 3B 13 11 CA FF 02 53 E5 5F 2A 12"

[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]
"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\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\F22P]
"msn.exe" = "msn"

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:

"UNCAsIntranet" = "1"

The Trojan modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:

"ProxyBypass" = "1"

The process pwfdfje.exe:996 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\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKCU\Software\Microsoft\yOLE]
"Supports RAS Connections" = "pwfdfje.exe"

[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"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 14 00 00 00 01 00 00 00 00 00 00 00"

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

[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\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

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

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

[HKCU\SYSTEM\CurrentControlSet\Control\Lsa]
"Supports RAS Connections" = "pwfdfje.exe"

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

[HKLM\SOFTWARE\Microsoft\yOLE]
"Supports RAS Connections" = "pwfdfje.exe"

[HKLM\System\CurrentControlSet\Control\Lsa]
"Supports RAS Connections" = "pwfdfje.exe"

[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\windows]
"skype.exe" = "skype"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "CB AD 11 4A 42 D8 6E 1B 22 39 13 FA 2D 9C A5 DB"

[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"

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[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"

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"

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\RunServices]
"Supports RAS Connections" = "pwfdfje.exe"

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"

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\Run]
"Supports RAS Connections" = "pwfdfje.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"

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]
"Supports RAS Connections" = "pwfdfje.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices]
"Supports RAS Connections" = "pwfdfje.exe"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"

The process pwfdfje.exe:520 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 65 1C 10 08 50 7B AF 4D 89 9B 53 6D FC CC 85"

[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 msn.exe:1840 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "62 21 06 A1 B6 0E 25 CF 9C 3B C0 C5 4B E5 71 C9"

[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 msn.exe:1844 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "03 59 7B D4 D0 99 00 55 BE A3 FD 28 6F 52 BA 47"

[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"

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]
"Remote Registry Service" = "csrss.exe"

The process %original file name%.exe:532 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "76 84 E9 9C C9 A2 7D 71 DB 94 72 7C 66 15 B8 A5"

[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"

The process %original file name%.exe:1232 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8C 14 FF BE 67 3B 61 6F 7E 22 66 88 2F 47 05 55"

[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"

Network activity (URLs)

URL IP
hxxp://directxex.com/uploads/1195512955.ms.exe?dl=1 (ET POLICY PE EXE or DLL Windows file download , Malicious)108.162.199.96
hxxp://www.whatismyip.com/ (ET POLICY Internal Host Retrieving External IP via whatismyip.com - Possible Infection )141.101.120.14
hxxp://checkip.dyndns.com/ (ET POLICY DynDNS CheckIp External IP Address Server Response )
checkip.dyndns.org216.146.39.70
vids.p0rn-lover.us176.31.75.42
videos.p0rn-lover.us176.31.75.42


HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.A worm can spread its copies through the MSN Messanger.

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):

    skype.exe:1832
    pwfdfje.exe:520
    msn.exe:1840
    msn.exe:1844
    %original file name%.exe:532
    %original file name%.exe:1232

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

    %Documents and Settings%\%current user%\F22P\msn.exe (10537 bytes)
    %Documents and Settings%\%current user%\Cookies\index.dat (964 bytes)
    %WinDir%\skype.exe (482067 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OPQNSD2J\1195512955.ms[1] (481864 bytes)
    %Documents and Settings%\%current user%\Cookies\Current_User@directxex[1].txt (223 bytes)
    %Documents and Settings%\%current user%\K50M41.WN2 (601 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (1249 bytes)
    %Documents and Settings%\%current user%\Z63D53.BV1 (601 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\aut3.tmp (1137 bytes)
    %WinDir%\csrss.exe (5441 bytes)
    %System%\pwfdfje.exe (5441 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (1249 bytes)

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

    [HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices]
    "Supports RAS Connections" = "pwfdfje.exe"

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "Supports RAS Connections" = "pwfdfje.exe"

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "Supports RAS Connections" = "pwfdfje.exe"

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices]
    "Supports RAS Connections" = "pwfdfje.exe"

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "Remote Registry Service" = "csrss.exe"

  5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  6. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
  7. 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