ThreatExpert Report: Trojan.Gen.2, Trojan.Win32.Bublik.cxe, PWS-Zbot.gen.ael, Mal/EncPk-AEH..

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Submission Summary:

Submission details:

Submission received: 22 October 2012, 01:46:08
Processing time: 7 min 55 sec
Submitted sample:

File MD5: 0x5643BEFC1C0A316DCEADA3FD339D14A2
File SHA-1: 0x729DD667CF995D7E5EBCF819A51516E8C927AD24
Filesize: 196,096 bytes
Alias:

Trojan.Gen.2 [Symantec]
Trojan.Win32.Bublik.cxe [Kaspersky Lab]
PWS-Zbot.gen.ael [McAfee]
Mal/EncPk-AEH [Sophos]
Trojan:Win32/Bublik.B [Microsoft]
Trojan.Win32.Bamital [Ikarus]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Installs a default debugger that is injected into the execution sequence of a target application. If a threat is installed as a default debugger, it will be run every time a target application is attempted to be launched - either to mimic it and hide its own presence (e.g. an open port or a running process), or simply to be activated as often as possible.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	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 file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\execr.exe [file and pathname of the sample #1]	196,096 bytes	MD5: 0x5643BEFC1C0A316DCEADA3FD339D14A2 SHA-1: 0x729DD667CF995D7E5EBCF819A51516E8C927AD24	Trojan.Gen.2 [Symantec] Trojan.Win32.Bublik.cxe [Kaspersky Lab] PWS-Zbot.gen.ael [McAfee] Mal/EncPk-AEH [Sophos] Trojan:Win32/Bublik.B [Microsoft] Trojan.Win32.Bamital [Ikarus]

Note:

%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).

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]	364,544 bytes

There was a new memory page created in the address space of the system process(es):

Process Name	Process Filename	Allocated Size
svchost.exe	%System%\svchost.exe	360,448 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\83F20BB1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\userinit.exe

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\83F20BB1]

(Default) = 7C 26 F7 7E 59 A3 E2 7D 3E 51 A1 12 E6 FA D8 0F 61 32 C6 15 0C B6 E2 1D A1 39 0C 0C 51 BA 17 1F F4 11 23 76 E5 8E 3E 75 46 0C 2A 74 A7 89 15 73 08 75 64 16 1D EB 95 5E A4 64 AC 40 59 1B A0 41 FC 88 DC 43 9D 11 EA 6C 26 87 85 6B AF 74 71 6A 10 F2 5C 6
441D = EC FD FB FC F1 D7 FB E9 E6 EC E5 E9 E6 E6 C8 FB E7 E5 ED EC E7 E5 E9 E1 E6 A6 EB E7 E5 AB ED E9 FB FC E7 E6 D7 FF ED FB FC C8 EE E9 E3 ED EC E7 E5 E9 E1 E6 A6 EB E7 E5 AB E2 FD FB FC E1 E6 D7 EB E9 FB ED C8 FB E7 E5 ED F8 E4 E9 EB ED A6 EB E7 E5 AB F
CA79 = 0x00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\userinit.exe]

Debugger = "execr.exe"

so that execr.exe is injected into the execution sequence of userinit.exe by being installed as its default debugger

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings]

ProxyEnable = 0x00000000
GlobalUserOffline = 0x00000000

[HKEY_CURRENT_USER\Identities]

Identity Login = 0x00098053

The following Registry Values were modified:

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]

Cookies =
Cache =
History =

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3]

1609 =

Other details

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

Russian Federation

To mark the presence in the system, the following Mutex objects were created:

MPSWabDataAccessMutex
MPSWABOlkStoreNotifyMutex
MSIdent Logon
72D940FB

The following Host Names were requested from a host database:

192.5.5.241
google.com

The following Internet Connections were established:

Server Name	Server Port	Connect as User	Connection Password
ponydata.com	80	(null)	(null)
redtoy.net	80	(null)	(null)
quickstyle.net	80	(null)	(null)
vogenuklex.myftp.org	80	(null)	(null)
ogaltibafet.mrbasic.com	80	(null)	(null)
weldinajor.sendsmtp.com	80	(null)	(null)

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