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BKDR_SINOWAL.SWP

November 06, 2013
 Analysis by: Mark Joseph Manahan
 ALIASES:

Backdoor.Win32.Sinowal.uyb (Kaspersky), RDN/Generic.grp!fx (McAfee), a variant of Win32/Kryptik.BMPV trojan (Eset)

 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:
 INFORMATION EXPOSURE:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW


This backdoor may arrive bundled with malware packages as a malware component.

It executes commands from a remote malicious user, effectively compromising the affected system.

  TECHNICAL DETAILS

File Size:

309,760 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

31 Oct 2013

Arrival Details

This backdoor may arrive bundled with malware packages as a malware component.

Backdoor Routine

This backdoor executes the following commands from a remote malicious user:

  • Steals Cookies
  • Monitors Accessed Sites
  • Monitors form inputs
  • Download Files
  • Execute Scripts
  • Capture Screenshots
  • Capture Video
  • Show/Hide Application Windows
  • Update itself

Mobile Malware Routine

This backdoor requires its main component to successfully perform its intended routine.

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

10.374.07

FIRST VSAPI PATTERN DATE:

31 Oct 2013

VSAPI OPR PATTERN File:

10.375.00

VSAPI OPR PATTERN Date:

31 Oct 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

Scan your computer with your Trend Micro product to delete files detected as BKDR_SINOWAL.SWP 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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