Worm.Win32.Ainslot.VB_b5ce1d8ac9

by malwarelabrobot on August 7th, 2013 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic!BT (VIPRE), Worm.SuspectCRC!IK (Emsisoft), Worm.Win32.Ainslot.VB.FD, GenericAutorunWorm.YR, WormAinslot_VariantOfZeus.YR (Lavasoft MAS)
Behaviour: Trojan, Worm, WormAutorun


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: b5ce1d8ac91872ad3085f2c7495a9df5
SHA1: c0e4465b71e98317f38a365e1b0fe1f2de762db5
SHA256: e041481ebdcaa886af10d86806c33abbe4c31ce21e3b7f3a1252c692b95253ad
SSDeep: 6144:q2px6T XTXbZWFx52H6rG10maItU6aXFb1Uxs:q46iBWZhU0rIe6n
Size: 222720 bytes
File type: PE32
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2011-10-18 21:20:12


Summary:

Worm. A program that is primarily replicating on networks or removable drives.

Payload

Behaviour Description
WormAutorun 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 Worm's file once a user opens a drive's folder in Windows Explorer.


Process activity

The Worm creates the following process(es):

AppLaunch.exe:1544
AppLaunch.exe:1620
AppLaunch.exe:1032
AppLaunch.exe:428
AppLaunch.exe:1744
AppLaunch.exe:480
reg.exe:1768
reg.exe:1784
reg.exe:1752
reg.exe:1008

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

b5ce1d8ac91872ad3085f2c7495a9df5.exe:576
wmiapsvrd.exe:1632
audiadg.exe:392

File activity

The process b5ce1d8ac91872ad3085f2c7495a9df5.exe:576 makes changes in a file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\System\wmiapsvrd.exe (1281 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\System\audiadg.exe (6 bytes)

The process AppLaunch.exe:1032 makes changes in a file system.
The Worm creates and/or writes to the following file(s):

D:\ffpw.dat (2 bytes)

The process AppLaunch.exe:428 makes changes in a file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\pws_chro.bss (129 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\pws_cdk.bss (14 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\pws_ff.bss (39 bytes)
%Documents and Settings%\%current user%\Application Data\erlog1018 (33 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\pws_mail.bss (50 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\pws_mess.bss (65 bytes)
%Documents and Settings%\%current user%\Application Data\wiinlogon.exe (59 bytes)

The process AppLaunch.exe:480 makes changes in a file system.
The Worm creates and/or writes to the following file(s):

D:\chro.dat (2 bytes)

Registry activity

The process b5ce1d8ac91872ad3085f2c7495a9df5.exe:576 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "23 E4 8F 65 34 2B 64 0A 68 2B A8 6D 63 D6 D3 74"

[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\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\System]
"audiadg.exe" = ""

The Worm 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 Worm 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 Worm 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 process wmiapsvrd.exe:1632 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BE 80 4D 43 3B D2 1E 5F DB AE 05 F0 17 B3 81 7C"

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

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

The process AppLaunch.exe:1544 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C9 32 3C 02 BA 87 3B 1A 40 E0 4C C6 AA D2 BA 18"

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

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

The process AppLaunch.exe:1620 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A3 B6 E8 0D CF B7 16 4A 6A 2A 22 B0 40 F7 39 E3"

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

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

The process AppLaunch.exe:1032 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D1 2E DB DF EA 4A 9D D6 19 07 EE AD DE 3E 23 A0"

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

The process AppLaunch.exe:428 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "62 1A 69 29 E9 57 EE FB 3B 93 B8 EC 8B 42 D4 8E"

[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"YQ4EYNRDA8" = "August 6, 2013"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run]
"ipoint.exe" = "%Documents and Settings%\%current user%\Application Data\wiinlogon.exe"

[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"YQ4EYNRDA8" = "1018torrents"

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

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{8BF88EAD-ABAF-6CFA-8BCF-02DEBF4B0B6A}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\wiinlogon.exe"

[HKCU\Software\Microsoft\Active Setup\Installed Components\{8BF88EAD-ABAF-6CFA-8BCF-02DEBF4B0B6A}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\wiinlogon.exe"

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

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

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

The process AppLaunch.exe:1744 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D8 D5 7E 31 0A 0D F6 E9 64 DC 0A 28 87 73 EA 82"

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

The process AppLaunch.exe:480 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "12 83 4A E9 6C DA B3 91 C0 E0 F4 B2 E9 21 B1 A8"

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

The process reg.exe:1768 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "83 F7 7D 54 E4 8C 6B FA 49 FF 8B 6A 9C F0 7D CC"

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"

The process reg.exe:1784 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "34 FA 16 57 77 42 FB 25 BB BC 9C 21 C6 4C 29 DE"

Adds a rule to the firewall Windows which allows any network activity:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\%Documents and Settings%\%current user%\Application Data]
"wiinlogon.exe" = "%Documents and Settings%\%current user%\Application Data\wiinlogon.exe:*:Enabled:Windows Messanger"

The process reg.exe:1752 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E9 D0 94 71 D8 EF 43 1A 86 33 C6 FF B4 BE BF 48"

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"

The process reg.exe:1008 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "AF 37 B3 2B 4E A3 04 D7 3F 43 C3 CC B4 18 C5 7C"

Adds a rule to the firewall Windows which allows any network activity:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\%WinDir%\Microsoft.NET\Framework\v2.0.50727]
"AppLaunch.exe" = "%WinDir%\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe:*:Enabled:Windows Messanger"

The process audiadg.exe:392 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2A ED BB E5 5A 47 A0 E7 7B 75 C1 E8 4C 7B 52 9B"

[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"

[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"

[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%\Local Settings\Temp\System]
"wmiapsvrd.exe" = "wmiapsvrd"

The Worm 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 Worm 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 Worm 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 Worm adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Microsoft® Windows® Operating System" = "C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\System\audiadg.exe"

Network activity (URLs)

URL IP
hxxp://api.ipinfodb.com/v2/ip_query_country.php?key=33134207068e7a95c2b45275a388806be6b9ca837fe782832723b99fb21a7a8c&timezone=off 67.212.77.12
kkklll.zapto.org 65.130.153.114


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 Worm's file once a user opens a drive's folder in Windows Explorer.


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):

    AppLaunch.exe:1544
    AppLaunch.exe:1620
    AppLaunch.exe:1032
    AppLaunch.exe:428
    AppLaunch.exe:1744
    AppLaunch.exe:480
    reg.exe:1768
    reg.exe:1784
    reg.exe:1752
    reg.exe:1008

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

    %Documents and Settings%\%current user%\Local Settings\Temp\System\wmiapsvrd.exe (1281 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\System\audiadg.exe (6 bytes)
    D:\ffpw.dat (2 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\pws_chro.bss (129 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\pws_cdk.bss (14 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\pws_ff.bss (39 bytes)
    %Documents and Settings%\%current user%\Application Data\erlog1018 (33 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\pws_mail.bss (50 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\pws_mess.bss (65 bytes)
    %Documents and Settings%\%current user%\Application Data\wiinlogon.exe (59 bytes)
    D:\chro.dat (2 bytes)

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

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

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

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "Microsoft® Windows® Operating System" = "C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\System\audiadg.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.

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