ThreatExpert Report: Virus.Win32.Virut

Technical Details:

File System Modifications

The following file was created in the system:

Filename(s)

File Size

File Hash

Alias

[file and pathname of the sample #1]

102,400 bytes

MD5: 0x50E34C91EFBE4C4BD4D94C691FC3E01A
SHA-1: 0xF793578431AEA6B123D3D7EF4FBB0CFB64BACC2D

Virus.Win32.Virut

[Ikarus]

Registry Modifications

The following Registry Keys were created:

HKEY_CURRENT_USER\Software\Microsoft\ActiveMovie\devenum\{4EFE2452-168A-11D1-BC76-00C04FB9453B}
HKEY_CURRENT_USER\Software\Microsoft\ActiveMovie\devenum\{4EFE2452-168A-11D1-BC76-00C04FB9453B}\Default MidiOut Device
HKEY_CURRENT_USER\Software\Microsoft\ActiveMovie\devenum\{E0F158E1-CB04-11D0-BD4E-00A0C911CE86}
HKEY_CURRENT_USER\Software\Microsoft\ActiveMovie\devenum\{E0F158E1-CB04-11D0-BD4E-00A0C911CE86}\Default DirectSound Device
HKEY_CURRENT_USER\Software\Microsoft\Multimedia\ActiveMovie
HKEY_CURRENT_USER\Software\Microsoft\Multimedia\ActiveMovie\Filter Cache

The newly created Registry Values are:

[HKEY_CURRENT_USER\Software\Microsoft\ActiveMovie\devenum\{4EFE2452-168A-11D1-BC76-00C04FB9453B}\Default MidiOut Device]

FriendlyName = "Default MidiOut Device"
CLSID = "{07B65360-C445-11CE-AFDE-00AA006C14F4}"
FilterData = 02 00 00 00 00 00 80 00 01 00 00 00 00 00 00 00 30 70 69 33 02 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 30 74 79 33 00 00 00 00 38 00 00 00 48 00 00 00 6D 69 64 73 00 00 10 00 80 00 00 AA 00 38 9B 71 00 00 00 00 00 00 00 00 00 00 00 0
MidiOutId = 0xFFFFFFFF

[HKEY_CURRENT_USER\Software\Microsoft\ActiveMovie\devenum\{E0F158E1-CB04-11D0-BD4E-00A0C911CE86}\Default DirectSound Device]

FriendlyName = "Default DirectSound Device"
CLSID = "{79376820-07D0-11CF-A24D-0020AFD79767}"
FilterData = 02 00 00 00 00 00 80 00 01 00 00 00 00 00 00 00 30 70 69 33 02 00 00 00 00 00 00 00 08 00 00 00 00 00 00 00 00 00 00 00 30 74 79 33 00 00 00 00 A8 00 00 00 B8 00 00 00 31 74 79 33 00 00 00 00 A8 00 00 00 C8 00 00 00 32 74 79 33 00 00 00 00 A8 00 00 0
DSGuid = "{00000000-0000-0000-0000-000000000000}"

[HKEY_CURRENT_USER\Software\Microsoft\Multimedia\ActiveMovie\Filter Cache]

0 = E0 5A 00 00 65 68 63 66 00 00 00 00 00 00 00 00 02 01 00 00 00 00 00 00 01 00 20 00 49 00 00 00 40 00 64 00 65 00 76 00 69 00 63 00 65 00 3A 00 64 00 6D 00 6F 00 3A 00 7B 00 32 00 45 00 45 00 42 00 34 00 41 00 44 00 46 00 2D 00 34 00 35 00 37 00 38 0

Other details

Analysis of the file resources indicate the following possible country of origin:

Brazil

To mark the presence in the system, the following Mutex object was created:

Microsoft_WMP_70_CheckForOtherInstanceMutex

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Submission Summary:

Technical Details: