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Worm.Win32.Ainslot_VariantOfZeus_13b3653645


Trojan.Win32.Generic!BT (VIPRE), 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

MD5: 13b3653645a50f152e59f821d2945f1e

SHA1: 8846ac051a6b13b8e31f2e6e96a38c0a521c077a

SHA256: 22ba74fb4e2e9b2bdd797274b48f71a6df7a4ac9ccdab2a7f1b85a79773648de

SSDeep: 24576:tnJ1kPyZvjUTiVgyr2Dgqb3HWncEoTZ9YL1IZGD4O2YsGsevZjzPWC7A0o:tJ1hZbUTi6cqb2Fod9vQ52YR1zPWC7AX

Size: 1216855 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2005-10-07 12:05:22

Analyzed on: WindowsXP SP3 32-bit

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

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


Process activity

The Worm creates the following process(es):

taskkill.exe:672
KSDEQ.cmd:500
KSDEQ.cmd:1668
%original file name%.exe:1508
reg.exe:1784
reg.exe:548
reg.exe:1612
reg.exe:1660
mshta.exe:1788
mshta.exe:1140
mshta.exe:632
mshta.exe:1064
mshta.exe:1264
mshta.exe:1536
mshta.exe:828

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

RegSvcs.exe:1044

File activity

The process KSDEQ.cmd:500 makes changes in the file system.


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

%Documents and Settings%\%current user%\Application Data\TPOAA\spd (4 bytes)

The Worm deletes the following file(s):

%Documents and Settings%\%current user%\Application Data\TPOAA\UUVHD (0 bytes)

The process KSDEQ.cmd:1668 makes changes in the file system.


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

%Documents and Settings%\%current user%\Application Data\TPOAA\UUVHD (121 bytes)

The process %original file name%.exe:1508 makes changes in the file system.


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

%Documents and Settings%\%current user%\Application Data\TPOAA\WOAYE.JHG (242 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\ARTQJ.AAC (1698 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\JURRZ.hxi (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\JECMR.IRI (673 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\OADVF.bbu (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\WYNWY.bse (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\DNZAY.rul (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\UIIKM.grb (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\VGOAL.xkt (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\IAKWT.pjc (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\RJXCV.xid (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\FFEIL.ikg (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\TKQAU.aqi (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\JEBPP.ant (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\BZCKX.cqp (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\KSDEQ.cmd (26040 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\OAICV.nhh (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\GCVEM.vke (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\POASD.gda (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\SRFJM.rih (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\MVKMT.wpj (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\OJTOB.gpv (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\CAQYL.ddm (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\LDQNJ.hoe (5 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\YMQGIX (29 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\UXXMC.ulo (4 bytes)
%Documents and Settings%\%current user%\Application Data\TPOAA\YNRRE.lll (4 bytes)

The process RegSvcs.exe:1044 makes changes in the file system.


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

%Documents and Settings%\%current user%\Local Settings\Temp\ZX351 (33 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\vbc.exe (32 bytes)

Registry activity

The process taskkill.exe:672 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A1 C2 5C 71 A9 8B 6D 72 23 EB 0D E2 7D 8B 1F 2B"

The process KSDEQ.cmd:500 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "08 E9 C3 36 1B 14 A1 60 84 D6 27 4B C0 63 D0 28"

[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"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%System%]
"mshta.exe" = "Microsoft (R) HTML Application host"

[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]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

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 local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

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

"ProxyBypass" = "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:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"KLREW" = "%Documents and Settings%\%current user%\Application Data\TPOAA\KSDEQ.cmd C:\DOCUME~1\"%CurrentUserName%"\APPLIC~1\TPOAA\ARTQJ.AAC"

The process KSDEQ.cmd:1668 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "90 C9 EE F2 83 66 98 95 FD 92 F4 5A 9E 5D D0 35"

[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 %original file name%.exe:1508 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BA 7E B0 9C 87 7B A9 E3 29 D3 35 C7 C8 91 C4 DE"

[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\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Application Data\TPOAA]
"KSDEQ.cmd" = "AutoIt v3 Script"

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

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 local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

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

"ProxyBypass" = "1"

The process reg.exe:1784 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E0 CB C2 64 A3 C3 1F DE C4 14 F0 76 DB E8 C1 A5"

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

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"vbc.exe" = "C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\vbc.exe:*:Enabled:Windows Messanger"

The process reg.exe:548 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "00 51 43 5F 9D F8 1B 23 8D 2C 89 2E F4 DD 64 D6"

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

The process reg.exe:1612 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "18 CA C5 9A BB E4 05 09 9F D3 DA 14 D3 46 A1 C6"

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]
"RegSvcs.exe" = "%WinDir%\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe:*:Enabled:Windows Messanger"

The process reg.exe:1660 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "55 A6 AD 88 EC 04 E7 0C AC 2E 56 FB CA 45 FA 53"

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

The process RegSvcs.exe:1044 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F6 65 05 08 2C 80 CB D0 0D FC EC 74 18 24 AE 5E"

[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"AZ05D7JSX4" = "553b"

[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"AZ05D7JSX4" = "March 15, 2014"

The process mshta.exe:1788 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A7 F8 3C D6 91 20 0F 80 0B 4B 3F DE C0 04 A7 9A"

The process mshta.exe:1140 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5A EF D2 CB A6 10 1A 98 2A 28 66 6F 93 2E A7 AA"

The process mshta.exe:632 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A7 F8 2C B1 95 BB 1E 53 9C 28 A3 04 16 31 51 56"

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


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "0A 87 11 BD C5 55 BF 2A 98 A9 78 65 9B 13 37 85"

The process mshta.exe:1264 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F0 41 AB 98 A0 4C 47 57 35 6A 3C B7 F3 97 48 40"

The process mshta.exe:1536 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9B AA EA E8 C0 89 EF 8E 41 8C 50 B2 87 18 29 AD"

The process mshta.exe:828 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "03 16 65 EA 32 04 0D 6F E9 4C 79 69 9F 40 65 F0"

Network activity (URLs)

URL IP
hxxp://api.ipinfodb.com/v2/ip_query_country.php?key=e2daa9f80efccf69baa89f5a6844da3778f9895aebd266425ee713814c74c902&timezone=off192.187.109.60
hxxp://api.ipinfodb.com/v2/ip_query.php?key=e2daa9f80efccf69baa89f5a6844da3778f9895aebd266425ee713814c74c902&timezone=off
razorback.chickenkiller.com77.97.227.65


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

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):

    taskkill.exe:672
    KSDEQ.cmd:500
    KSDEQ.cmd:1668
    %original file name%.exe:1508
    reg.exe:1784
    reg.exe:548
    reg.exe:1612
    reg.exe:1660
    mshta.exe:1788
    mshta.exe:1140
    mshta.exe:632
    mshta.exe:1064
    mshta.exe:1264
    mshta.exe:1536
    mshta.exe:828

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

    %Documents and Settings%\%current user%\Application Data\TPOAA\spd (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\UUVHD (121 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\WOAYE.JHG (242 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\ARTQJ.AAC (1698 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\JURRZ.hxi (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\JECMR.IRI (673 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\OADVF.bbu (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\WYNWY.bse (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\DNZAY.rul (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\UIIKM.grb (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\VGOAL.xkt (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\IAKWT.pjc (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\RJXCV.xid (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\FFEIL.ikg (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\TKQAU.aqi (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\JEBPP.ant (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\BZCKX.cqp (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\KSDEQ.cmd (26040 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\OAICV.nhh (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\GCVEM.vke (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\POASD.gda (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\SRFJM.rih (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\MVKMT.wpj (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\OJTOB.gpv (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\CAQYL.ddm (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\LDQNJ.hoe (5 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\YMQGIX (29 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\UXXMC.ulo (4 bytes)
    %Documents and Settings%\%current user%\Application Data\TPOAA\YNRRE.lll (4 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\ZX351 (33 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\vbc.exe (32 bytes)

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

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "KLREW" = "%Documents and Settings%\%current user%\Application Data\TPOAA\KSDEQ.cmd C:\DOCUME~1\"%CurrentUserName%"\APPLIC~1\TPOAA\ARTQJ.AAC"

  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