Analysis by: MarfelTi
ALIASES:

Kaspersky: Trojan-Banker.Win32.Banker.blom; Mcafee: PWS-Banker!gxz

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware. It may be dropped by other malware.

  TECHNICAL DETAILS

File Size: 7,680 bytes
File Type: SYS
Memory Resident: Yes
Initial Samples Received Date: 15 Jun 2011

Arrival Details

This Trojan may be dropped by other malware.

It may be dropped by the following malware:

  • TSPY_BANKER.CPF

Autostart Technique

This Trojan registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\pelodlo
ImagePath = system32\drivers\trs.sys

Other System Modifications

This Trojan adds the following registry keys:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_PELODLO

  SOLUTION

Minimum Scan Engine: 8.900

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

Remove malware files dropped/downloaded by TSPY_BANKER.EST

    TSPY_BANKER.CPF

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

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\SYSTEM\CurrentControlSet\Enum\Root\
    • LEGACY_PELODLO

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_BANKER.EST. 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.


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