Submission Summary:

What's been foundSeverity Level
Communication with a remote IRC server.
Produces outbound traffic.
Downloads/requests other files from Internet.
Registers a Winlogon notification package so that the installed module is loaded into the address space of winlogon.exe.
Contains characteristics of an identified security risk.


Technical Details:


Possible Security Risk

Threat CategoryDescription
A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment
A program that downloads files to the local computer that may represent security risk


File System Modifications

#Filename(s)File SizeFile HashAlias
1 %UserProfile%\irpz.exe 364,544 bytes MD5: 0xD4A52CD8F76EF97F0B2913D797C78368
SHA-1: 0x15A477DA6F69BCA3C5FA49A3F2D232BD4A85AB17
Trojan-Dropper.Delf.V [PCTools]
Downloader [Symantec]
Trojan.Win32.Delf.ahcb [Kaspersky Lab]
Generic.dx!ukd [McAfee]
Mal/Generic-L [Sophos]
Trojan:Win32/Meredrop [Microsoft]
Trojan-Dropper.Delf [Ikarus]
Dropper/Malware.364544.AU [AhnLab]
2 %System%\crt.dat 12 bytes MD5: 0x477EB275173789FE2F03C2A2B69B6663
SHA-1: 0x49C318C736682F6253CAA20AF48D47BDA79F1108
(not available)
3 %System%\cryptnet32.dll 46,592 bytes MD5: 0x6BF89F21E40016AE9002512143B69055
SHA-1: 0xE77C8D2B90B84CD72BCEFBB703FB24CC5AF421B3
Trojan-Dropper.Delf.V [PCTools]
Trojan.Gen [Symantec]
Trojan.Win32.Delf.ahif [Kaspersky Lab]
Generic.dx!ukc [McAfee]
Trojan:Win32/Lukicsel.G [Microsoft]
4 %System%\shimg.dll 295,554 bytes MD5: 0x1ADD3051C3C78101633623BF306ECC78
SHA-1: 0x069480E0CBCBD72AC131623CF577AA2D8D8E3700
(not available)


Memory Modifications

Process NameProcess FilenameAllocated Size
svchost.exe%System%\svchost.exe98,304 bytes
svchost.exe%System%\svchost.exe118,784 bytes
svchost.exe%System%\svchost.exe200,704 bytes
svchost.exe%System%\svchost.exe217,088 bytes
svchost.exe%System%\svchost.exe24,576 bytes
svchost.exe%System%\svchost.exe45,056 bytes


Registry Modifications


Other details

Remote HostPort Number


Outbound traffic (potentially malicious)



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