TROJ_FAKEAV.KLD

 Modified by: Adrian Cofreros

 ALIASES:

TR/Crypt.XPACK.Gen3(Antivir)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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.

It does not have any propagation routine.

It does not have any backdoor routine.

It does not drop any other file.

It does not have any downloading capability.

It does not have any information-stealing capability.

  TECHNICAL DETAILS

File Size:

847,872 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

21 Jun 2013

Payload:

Connects to URLs/IPs, Displays windows, Displays graphics/image

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.

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Internet Security = "{malware path}\{malware file name}.exe"

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\{random key}

It adds the following registry entries:

HKEY_CURRENT_USER\Software\{random key}
FRun = "0"

HKEY_CURRENT_USER\Software\{random key}
O`ld = "{random value 1}"

HKEY_CURRENT_USER\Software\{random key}
Q`ui = "{random value 2}"

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Dropping Routine

This Trojan does not drop any other file.

Download Routine

This Trojan does not have any downloading capability.

Information Theft

This Trojan does not have any information-stealing capability.

Rogue Antivirus Routine

This Trojan displays the following fake alerts:

It displays the following window and pretends to scan the system:

NOTES:

By Clicking the [Get full time protection now], it will trigger any of these Activation Windows:

Then by clicking Activate Now, it will redirect to this URL:

  • http://{BLOCKED}tyserviceauto.com/buynow.php?bid=105

When Clicking Proceed to Checkout, it will prompt the user to enter credit card information on this URL:

  • https://{BLOCKED}e.{BLOCKED}ling.com/order/pay

After providing the credit card information and clicking Secure Purchase, it will direct to this URL:

  • http://{BLOCKED}rtal360.com/404.php?id=%advid%

This Trojan terminates processes except the following:

  • explorer.exe
  • lsass.exe
  • ctfmon.exe
  • csrss.exe
  • spoolsv.exe
  • svchost.exe
  • services.exe
  • winlogon.exe
  • smss.exe
  • rundll32.exe
  • wscntfy.exe
  • SearchIndexer.exe
  • msfeedssync.exe
  • services.exe
  • WmiPrvSE.exe
  • internat.exe
  • ielowutil.exe
  • VMwareService.exe
  • VMwareTray.exe
  • userinit.exe
  • MpfAlert.exe
  • mcmscsvc.exe

It does not have rootkit capabilities.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

10.106.01

FIRST VSAPI PATTERN DATE:

21 Jun 2013

VSAPI OPR PATTERN File:

10.107.00

VSAPI OPR PATTERN Date:

22 Jun 2013

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

Restart in Safe Mode

[ Learn More ]

Step 3

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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • Internet Security = "{malware path}\{malware file name}.exe"

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_FAKEAV.KLD. 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 5

The following created registry key(s) cannot be identified by the user since there are no reference values in the created key. The only way it can be identified is by comparing the present keys with a backup of the system registry. Note that the said key(s) do not have to be deleted since it won't be harmful to the system:

  • In HKEY_CURRENT_USER\Software
    • {random key}


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