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BKDR_BLACKMOON.A

June 28, 2017
 Analysis by: Cris Nowell Pantanilla
 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet


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.

  TECHNICAL DETAILS

File Size:

22,082 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

27 Jun 2017

Payload:

Downloads files

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.

Download Routine

This Backdoor connects to the following URL(s) to download its component file(s):

  • http://www.{BLOCKED}ro.org/file/ad_{number}/cod{number}

NOTES:

It connects to the remote site to download an arbitrary code. This allows the remote malicious user to execute codes on the affected system.

The said shellcode contains code that is used to download another file on the affected system.

It connects to the following remote site to download and execute a malicious file:

  • http://www.{BLOCKED}ro.org/file/ad_{number}/test{number}.jpg ← detected as TROJ_BLACKMOON.A

As a result, malicious routines of the downloaded files are exhibited on the affected system.

  SOLUTION

Minimum Scan Engine:

9.850

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_BLACKMOON.A. 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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