ThreatExpert Report: Trojan.Win32.Crypt.mv, Trojan Horse, Generic Dropper, TROJ

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Submission Summary:

Submission details:

Submission received: 4 November 2008, 23:33:45
Processing time: 5 min 34 sec
Submitted sample:

File MD5: 0x89064CD3D0BF9BB4E23C522ACE408B9D
File SHA-1: 0x5D5F3CCB6C35867DB621F15B45463BF60039DD36
Filesize: 33,280 bytes
Alias:

Trojan Horse [Symantec]
Trojan.Win32.Crypt.mv [Kaspersky Lab]
Generic Dropper [McAfee]
TROJ_PANDEX.DV [Trend Micro]
Mal/Pushdo-A [Sophos]
TrojanDropper:Win32/Cutwail.AL [Microsoft]
Trojan.Win32.Crypt.mv [Ikarus]

Summary of the findings:

What's been found	Severity Level
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! Characteristics of the following security risk was identified in the system:

Security Risk	Description
Trojan-Downloader.Agent	Trojan.Downloader.Agent downloads and installs other malware onto infected machine.

Attention! The following threat categories were identified:

Threat Category	Description
	A code with the rootkit-specific techniques designed to hide the software presence in the system
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\WERf1d8.dir00\appcompat.txt	16,296 bytes	MD5: 0xF560A82E9385739415E085B4553CBA8F SHA-1: 0x958B55E9517896C07D689F6BDDED4EF10D0718A9	(not available)
2	%Temp%\WERf1d8.dir00\manifest.txt	1,742 bytes	MD5: 0xBA7B0F2347D1ACA953E805E2A4E9E92F SHA-1: 0xA3832B4D9A6DC61EDB12779D9E4A3D2AB7578C75	(not available)
3	%Temp%\WERf1d8.dir00\services.exe.hdmp	6,273,748 bytes	MD5: 0xD3976492400330E4EABCDD706675C8BF SHA-1: 0x7CFDF30487C2A869FDC8B24906D1D45226DEA99A	(not available)
4	%Temp%\WERf1d8.dir00\services.exe.mdmp	59,713 bytes	MD5: 0xC70A91E783C1A8D967CC758C66D4D8C4 SHA-1: 0x45785A2A123448695ED7C51ED7150E0836021E87	(not available)
5	%System%\drivers\Lyi33.sys	32,256 bytes	MD5: 0x7B10E0A21869E736929D2153AC5C12C4 SHA-1: 0x8FCD149BA361B78182B113C22295ECC18267AFBF	Trojan-Downloader.Agent [PCTools] Trojan.Pandex [Symantec] Rootkit.Win32.Agent.cmo [Kaspersky Lab] Cutwail.gen.a [McAfee] TROJ_ROOTKIT.FV [Trend Micro] Troj/Pushu-Gen [Sophos] VirTool:WinNT/Cutwail.K [Microsoft] Rootkit.Win32.Agent.cmo [Ikarus]
6	[file and pathname of the sample #1]	33,280 bytes	MD5: 0x89064CD3D0BF9BB4E23C522ACE408B9D SHA-1: 0x5D5F3CCB6C35867DB621F15B45463BF60039DD36	Trojan Horse [Symantec] Trojan.Win32.Crypt.mv [Kaspersky Lab] Generic Dropper [McAfee] TROJ_PANDEX.DV [Trend Micro] Mal/Pushdo-A [Sophos] TrojanDropper:Win32/Cutwail.AL [Microsoft] Trojan.Win32.Crypt.mv [Ikarus]

Notes:

%Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).
%System% is a variable that refers to the System folder. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

The following directory was created:

%Temp%\WERf1d8.dir00

Memory Modifications

There was a new process created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	40,960 bytes

There was a new kernel-mode driver installed in the system:

Driver Name	Driver Filename
Lyi33.sys	%System%\drivers\lyi33.sys

Attention! The following Major I/O Request Packet (IRP) function was hooked in the kernel-mode driver:

IRP_MJ_CREATE

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Lyi33.sys
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Network\Lyi33.sys
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_LYI33
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_LYI33\0000
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_LYI33\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Lyi33
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Lyi33\Security
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Lyi33\Enum
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Lyi33
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\Lyi33.sys
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\Lyi33.sys
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_LYI33
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_LYI33\0000
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_LYI33\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lyi33
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lyi33\Security
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lyi33\Enum

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Lyi33.sys]

(Default) = "Driver"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Network\Lyi33.sys]

(Default) = "Driver"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_LYI33\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "Lyi33"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_LYI33\0000]

Service = "Lyi33"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "Lyi33"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_LYI33]

NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Lyi33\Enum]

0 = "Root\LEGACY_LYI33\0000"
Count = 0x00000001
NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Lyi33\Security]

Security = 01 00 14 80 90 00 00 00 9C 00 00 00 14 00 00 00 30 00 00 00 02 00 1C 00 01 00 00 00 02 80 14 00 FF 01 0F 00 01 01 00 00 00 00 00 01 00 00 00 00 02 00 60 00 04 00 00 00 00 00 14 00 FD 01 02 00 01 01 00 00 00 00 00 05 12 00 00 00 00 00 18 00 FF 01 0F 0

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Lyi33]

Type = 0x00000001
Start = 0x00000000
ErrorControl = 0x00000000
ImagePath = "%System%\Drivers\Lyi33.sys"
Group = "SCSI Class"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Lyi33]

Type = 0x00000001
Start = 0x00000000
ImagePath = "%System%\Drivers\Lyi33.sys"
Group = "SCSI Class"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\Lyi33.sys]

(Default) = "Driver"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\Lyi33.sys]

(Default) = "Driver"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_LYI33\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "Lyi33"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_LYI33\0000]

Service = "Lyi33"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "Lyi33"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_LYI33]

NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lyi33\Enum]

0 = "Root\LEGACY_LYI33\0000"
Count = 0x00000001
NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lyi33\Security]

Security = 01 00 14 80 90 00 00 00 9C 00 00 00 14 00 00 00 30 00 00 00 02 00 1C 00 01 00 00 00 02 80 14 00 FF 01 0F 00 01 01 00 00 00 00 00 01 00 00 00 00 02 00 60 00 04 00 00 00 00 00 14 00 FD 01 02 00 01 01 00 00 00 00 00 05 12 00 00 00 00 00 18 00 FF 01 0F 0

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lyi33]

Type = 0x00000001
Start = 0x00000000
ErrorControl = 0x00000000
ImagePath = "%System%\Drivers\Lyi33.sys"
Group = "SCSI Class"

Other details

There was registered attempt to establish connection with the remote host. The connection details are:

Remote Host	Port Number
216.195.56.22	80

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