arrow_back
search
close

BKDR_SWRORT.YKI

April 07, 2017
 Analysis by: Cris Nowell Pantanilla
 ALIASES:

Trojan:Win32/Swrort.A (Microsoft), a variant of Win32/Rozena.PP trojan (NOD32)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW


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

It connects to a website to send and receive information.

  TECHNICAL DETAILS

File Size:

14,336 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

05 Apr 2017

Arrival Details

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

Backdoor Routine

This Backdoor connects to the following websites to send and receive information:

  • http://{BLOCKED}.{BLOCKED}.134.20:8443/cPdE

As of this writing, the said sites are inaccessible.

Other Details

This Backdoor does the following:

  • Once connected, it attempts to download an arbitrary code and execute it on the affected system.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.320.04

FIRST VSAPI PATTERN DATE:

05 Apr 2017

VSAPI OPR PATTERN File:

13.321.00

VSAPI OPR PATTERN Date:

06 Apr 2017

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_SWRORT.YKI. 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.


Did this description help? Tell us how we did.