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TROJ64_COINMINE.KB

July 26, 2017
 Analysis by: John Anthony Banes
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan may arrive bundled with malware packages as a malware component. It 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:

123,409 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

13 Jun 2017

Arrival Details

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

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

Other Details

This Trojan connects to the following possibly malicious URL:

  • xmr.{BLOCKED}-pool.fr:3333

It requires the existence of the following files to properly run:

  • {malware path}\cygcom_err-2.dll
  • {malware path}\cygcrypto-1.0.0.dll
  • {malware path}\cygcurl-4.dll
  • {malware path}\cyggcc_s-seh-1.dll
  • {malware path}\cyggssapi_krb5-2.dll
  • {malware path}\cygiconv-2.dll
  • {malware path}\cygidn-11.dll
  • {malware path}\cygintl-8.dll
  • {malware path}\cygk5crypto-3.dll
  • {malware path}\cygkrb5-3.dll
  • {malware path}\cygkrb5support-0.dll
  • {malware path}\cyglber-2-4-2.dll
  • {malware path}\cygldap-2-4-2.dll
  • {malware path}\cygldap_r-2-4-2.dll
  • {malware path}\cygnghttp2-14.dll
  • {malware path}\cygpsl-5.dll
  • {malware path}\cygsasl2-3.dll
  • {malware path}\cygssh2-1.dll
  • {malware path}\cygssl-1.0.0.dll
  • {malware path}\cygunistring-2.dll
  • {malware path}\cygwin1.dll
  • {malware path}\cygz.dll

It does the following:

  • This Trojan is a coin miner used to generate bitcoins.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.474.03

FIRST VSAPI PATTERN DATE:

16 Jun 2017

VSAPI OPR PATTERN File:

13.475.80

VSAPI OPR PATTERN Date:

17 Jun 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

Identify and terminate files detected as TROJ64_COINMINE.KB

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ64_COINMINE.KB. 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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