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TROJ_DROPPER.EJQI

December 06, 2014
 ALIASES:

TrojanDownloader:Win32/Agent (Microsoft); Generic FakeAlert.b (McAfee); Downloader (Symantec); Troj/FauxSec-A (Sophos); Trojan.Win32.Fauxsec.a (v) (Sunbelt)

 PLATFORM:

Windows

 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:

110,592 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

06 Dec 2014

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.

Other System Modifications

This Trojan adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\
CCPD-LC\KStore2005\00000083\
00000027\000000D4\DMTemp

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\
CCPD-LC\KStore2005\00000083\
00000027\000000D4\DMTemp
recoverypos = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\
CCPD-LC\KStore2005\00000083\
00000027\000000D4\DMTemp
proxyport = "80"

HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\
CCPD-LC\KStore2005\00000083\
00000027\000000D4\DMTemp
proxy = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\
CCPD-LC\KStore2005\00000083\
00000027\000000D4\DMTemp
proxypassword = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\
CCPD-LC\KStore2005\00000083\
00000027\000000D4\DMTemp
Recovery = "{random values}"

It deletes the following registry keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Explorer\
ControlPanel\NameSpace\{7A9D77BD-5403-11d2-8785-2E0420524153}

Dropping Routine

This Trojan drops the following files:

  • %Desktop%\Norton AntiVirus 2005 Download Manager.lnk

(Note: %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://sasmain.{BLOCKED}ec.com/935632/NIEM0013/003N/7iKseAAAQPAnIj/w
  • http://spftrl.{BLOCKED}lriver.com/pub/symantec/2004/NP05ENG.exe
  • {BLOCKED}4.54.244
  • {BLOCKED}13.9

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.700

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

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\Symantec\CCPD-LC\KStore2005\00000083\00000027\000000D4
    • DMTemp

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\Symantec\CCPD-LC\KStore2005\00000083\00000027\000000D4\DMTemp
    • recoverypos = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\CCPD-LC\KStore2005\00000083\00000027\000000D4\DMTemp
    • proxyport = "80"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\CCPD-LC\KStore2005\00000083\00000027\000000D4\DMTemp
    • proxy = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\CCPD-LC\KStore2005\00000083\00000027\000000D4\DMTemp
    • proxypassword = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\CCPD-LC\KStore2005\00000083\00000027\000000D4\DMTemp
    • Recovery = "{random values}"

Step 4

Search and delete this file

[ Learn More ]
There may be some 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.
  • %Desktop%\Norton AntiVirus 2005 Download Manager.lnk

Step 5

Scan your computer with your Trend Micro product to delete files detected as TROJ_DROPPER.EJQI. 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 6

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\ControlPanel\NameSpace
    • {7A9D77BD-5403-11d2-8785-2E0420524153}


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