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Worm.Win32.AutoIt_54760aa27e


Worm.Win32.Ainslot!IK (Emsisoft), Worm.Win32.AutoIt.FD, WormAutoItGen.YR (Lavasoft MAS)Behaviour: Worm

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

Summary

MD5: 54760aa27ea82ac08e69c41cab18b8c8

SHA1: f9ca45fae21d5339ffc6b7fa24a823bcdb0c5365

SHA256: b1630b988c5a56e01c9be20c8e53d9172e3f524520b0447e9531ec230e1a3d57

SSDeep: 12288:HBkDgouVA2CxKkorvdRgQriDwOIsmxiZnYQE7PJcE4aydixwdAMj:tRmYkcoQricOIrxiZY1iaydEwdAMj

Size: 793348 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: Worm. A program that is primarily replicating on networks or removable drives.

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Worm creates the following process(es):

ipconfig.exe:2752
ipconfig.exe:2612
%original file name%.exe:2448

The Worm injects its code into the following process(es):No processes have been created.

File activity

The process %original file name%.exe:2448 makes changes in the file system.


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

%System%\drivers\etc\hosts (182 bytes)

Registry activity

The process ipconfig.exe:2752 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7D 39 7E D4 ED 93 BC B2 1F 6E 94 4B 1B A9 67 5D"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy\traceIdentifier]
"Guid" = "5f31090b-d990-4e91-b16d-46121d0255aa"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil\traceIdentifier]
"Guid" = "8aefce96-4618-42ff-a057-3536aa78233e"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy]
"Active" = "1"

[HKLM\System\CurrentControlSet\Services\Eventlog\Application\ESENT]
"CategoryMessageFile" = "%System%\ESENT.dll"
"EventMessageFile" = "%System%\ESENT.dll"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg]
"Active" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil]
"Active" = "1"
"ControlFlags" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg\traceIdentifier]
"Guid" = "5f31090b-d990-4e91-b16d-46121d0255aa"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg]
"ControlFlags" = "1"

[HKLM\System\CurrentControlSet\Services\Eventlog\Application\ESENT]
"CategoryCount" = "16"
"TypesSupported" = "7"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy]
"ControlFlags" = "1"

The process ipconfig.exe:2612 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F1 01 A7 60 9F 6D F9 4B D5 CA 95 6B BB 90 7D AD"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy\traceIdentifier]
"Guid" = "5f31090b-d990-4e91-b16d-46121d0255aa"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil\traceIdentifier]
"Guid" = "8aefce96-4618-42ff-a057-3536aa78233e"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy]
"Active" = "1"

[HKLM\System\CurrentControlSet\Services\Eventlog\Application\ESENT]
"CategoryMessageFile" = "%System%\ESENT.dll"
"EventMessageFile" = "%System%\ESENT.dll"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg]
"Active" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil]
"Active" = "1"
"ControlFlags" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg\traceIdentifier]
"Guid" = "5f31090b-d990-4e91-b16d-46121d0255aa"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg]
"ControlFlags" = "1"

[HKLM\System\CurrentControlSet\Services\Eventlog\Application\ESENT]
"CategoryCount" = "16"
"TypesSupported" = "7"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy]
"ControlFlags" = "1"

The process %original file name%.exe:2448 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "89 56 E2 CC BC B7 79 F7 C2 7E 6F 02 9C 94 B5 14"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{773a730e-74fb-11e2-b597-000c293bdf2f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f3-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f5-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f2-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

Network activity (URLs)

No activity has been detected.

HOSTS file anomalies

The Worm modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 916 bytes in size. The following strings are added to the hosts file listed below:

127.0.0.1virustotal.com
127.0.0.1www.virustotal.com
127.0.0.174.53.201.162
127.0.0.1jotti.org
127.0.0.1www.jotti.org
127.0.0.1virusscan.jotti.org
127.0.0.166.36.241.92


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):

    ipconfig.exe:2752
    ipconfig.exe:2612
    %original file name%.exe:2448

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

    %System%\drivers\etc\hosts (182 bytes)

  4. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

Network Activity

Map

Strings from Dumps