TROJ_KRADARE.USL07VC

October 13, 2012
 ALIASES:

Downloader (Symantec); PAK:PE_Patch.PECompact, PAK:PecBundle, PAK:PECompact (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan.Downloader.Delf.SCV (FSecure)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

324,568 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

06 Jul 2012

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan drops the following copies of itself into the affected system:

  • %User Temp%\{malware file name}

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

It creates the following folders:

  • %Program Files%\Me2 Supporter

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

Other System Modifications

This Trojan deletes the following files:

  • %User Temp%\{malware file name}

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1F3EA144C4CA46 = "00CA"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
19465746DF347A = "04B1363EBFE5B0ED6C0D84724B"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1CCE4785AC0D6C9297753585 = "04B1363EBFE5B0ED6C0D84724BCA085ADDD7EB"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
04BBBEAE46E0F9286669 = "07FE9ED0"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
00ED0FABC1B922F8D1AD903E4A2D0EAE6D5D = "0D63DD793A080651352D4E442B4F6E58"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
00ED0FABC1B922F8D1AD903E = "2404FD9AED3A619FDAFF0D19ACC711D808"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
0A20E4A92F12697F8E009CBFB7F07A0ED0683AD9 = "0A20E4A92F1201A3FFA1"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
0A20E4A92F12697F8E009CBFB7F0 = "2404FD9D50FA45A8864744"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1B5C99B7F005320788D92C9822B2CBCFFAD9 = "0ED5B154AAC794F608"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1B5C99B7F005320788D92C98 = "2404FD999BC204356FC8"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1819B117E8A22F400B2BE5FC4A9226B9305556B782F2E6 = "1819B117E8C0C54808"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1819B117E8A22F400B2BE5FC4A9226B930 = "2404FD8F572F2261D26C"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
0172590419AD3E27EBA45705FF9E = "2404FDADF3EB47AB357BDE7C625DD0E6BF"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1CCE4785AC0D79261A25947882 = "2404FDADF3EB47AB357BDE7C24E7C4AF"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1B4CCD033C93083A4184FEB1C09892 = "2404FDADF3EB47AB357BDE7C781A996A96"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
08411FE997 = "F06E21C9DA7DA24BEC7D8172D365C2"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
19464AC8B4C9520C55597210 = "04B1363EBFE5B0ED6C0D84724B"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1AFCF8CCF70F4FE686029AE9 = "04B1363EBFE5B0ED6C0D84724B"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1AFCF8CCF70F4FF12352D459 = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
00C68C0AC891FEB4CB8CC5834641A9 = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
1B4CC94BC5BDD7 = "1ADAA034E49F662698A6D4F31B9A8227EF7C6D1B7AEA"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
0490 = "7BE34C"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\
Data
194651D07B8ED8674663DE363E = "04B1363EBFE5B0ED6C0D84724B"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
238Config.oBs = "2010070102"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
me2Supporter.exe = "2011031801"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
DownFileInfo.oBs = "2010011501"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
Guide.oBs = "2011070501"

HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
Query.oBs = "2011070501"

Dropping Routine

This Trojan drops the following files:

  • %System%\me2config.o
  • %Program Files%\Me2 Supporter\me2Supporter.exe
  • %User Temp%\me2downfileinfo.oN
  • %User Temp%\238Config.oBs
  • %User Temp%\me2Supporter.exe
  • %User Temp%\DownFileInfo.oBs
  • %Program Files%\Me2 Supporter\me2DownFileInfo.o
  • %User Temp%\Guide.oBs
  • %Program Files%\Me2 Supporter\me2guide.o
  • %User Temp%\Query.oBs
  • %Program Files%\Me2 Supporter\me2query.o
  • %User Temp%\me2Supporterh.dll

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.200

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
    • Data

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1F3EA144C4CA46 = "00CA"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 19465746DF347A = "04B1363EBFE5B0ED6C0D84724B"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1CCE4785AC0D6C9297753585 = "04B1363EBFE5B0ED6C0D84724BCA085ADDD7EB"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 04BBBEAE46E0F9286669 = "07FE9ED0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 00ED0FABC1B922F8D1AD903E4A2D0EAE6D5D = "0D63DD793A080651352D4E442B4F6E58"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 00ED0FABC1B922F8D1AD903E = "2404FD9AED3A619FDAFF0D19ACC711D808"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 0A20E4A92F12697F8E009CBFB7F07A0ED0683AD9 = "0A20E4A92F1201A3FFA1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 0A20E4A92F12697F8E009CBFB7F0 = "2404FD9D50FA45A8864744"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1B5C99B7F005320788D92C9822B2CBCFFAD9 = "0ED5B154AAC794F608"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1B5C99B7F005320788D92C98 = "2404FD999BC204356FC8"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1819B117E8A22F400B2BE5FC4A9226B9305556B782F2E6 = "1819B117E8C0C54808"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1819B117E8A22F400B2BE5FC4A9226B930 = "2404FD8F572F2261D26C"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 0172590419AD3E27EBA45705FF9E = "2404FDADF3EB47AB357BDE7C625DD0E6BF"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1CCE4785AC0D79261A25947882 = "2404FDADF3EB47AB357BDE7C24E7C4AF"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1B4CCD033C93083A4184FEB1C09892 = "2404FDADF3EB47AB357BDE7C781A996A96"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 08411FE997 = "F06E21C9DA7DA24BEC7D8172D365C2"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 19464AC8B4C9520C55597210 = "04B1363EBFE5B0ED6C0D84724B"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1AFCF8CCF70F4FE686029AE9 = "04B1363EBFE5B0ED6C0D84724B"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1AFCF8CCF70F4FF12352D459 = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 00C68C0AC891FEB4CB8CC5834641A9 = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 1B4CC94BC5BDD7 = "1ADAA034E49F662698A6D4F31B9A8227EF7C6D1B7AEA"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 0490 = "7BE34C"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter\Data
    • 194651D07B8ED8674663DE363E = "04B1363EBFE5B0ED6C0D84724B"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
    • 238Config.oBs = "2010070102"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
    • me2Supporter.exe = "2011031801"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
    • DownFileInfo.oBs = "2010011501"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
    • Guide.oBs = "2011070501"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Me2 Supporter
    • Query.oBs = "2011070501"

Step 4

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %System%\me2config.o
  • %Program Files%\Me2 Supporter\me2Supporter.exe
  • %User Temp%\me2downfileinfo.oN
  • %User Temp%\238Config.oBs
  • %User Temp%\me2Supporter.exe
  • %User Temp%\DownFileInfo.oBs
  • %Program Files%\Me2 Supporter\me2DownFileInfo.o
  • %User Temp%\Guide.oBs
  • %Program Files%\Me2 Supporter\me2guide.o
  • %User Temp%\Query.oBs
  • %Program Files%\Me2 Supporter\me2query.o
  • %User Temp%\me2Supporterh.dll

Step 5

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %Program Files%\Me2 Supporter

Step 6

Scan your computer with your Trend Micro product to delete files detected as TROJ_KRADARE.USL07VC. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 7

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • %User Temp%\{malware file name}


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