TROJ_DLOADR.AUSUMQ

July 26, 2018
 Analysis by: Michael Jhon Ofiaza
 ALIASES:

Trojan-Downloader.Win32.Miner.ft (Kaspersky) ; TrojanDownloader:Win32/Meralifea.A (Microsoft)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet

This Trojan 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:

20,636 bytes

File Type:

Other

Memory Resident:

Yes

Initial Samples Received Date:

26 Jul 2018

Payload:

Steals information, Terminates processes

Arrival Details

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

Installation

This Trojan terminates itself if it finds the following processes in the affected system's memory:

  • devenv.exe
  • wireshark.exe
  • vmacthlp.exe
  • procmon.exe
  • ollydbg.exe
  • idag.exe
  • ImmunityDebugger.exe
  • windbg.exe
  • EHSniffer.exe
  • iris.exe
  • procexp.exe
  • filemon.exe

Information Theft

This Trojan gathers the following data:

  • OS Version and Architecture

Other Details

This Trojan does the following:

  • Connects to the following URL to download and load the payload on memory:
    • sltp://setup.{BLOCKED}b.online:1108/setup.bin?id=128
  • This Trojan is injected in dllhost.exe by TROJ_DLOADR.AUSUMP

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

14.406.05

FIRST VSAPI PATTERN DATE:

27 Jul 2018

VSAPI OPR PATTERN File:

14.407.00

VSAPI OPR PATTERN Date:

28 Jul 2018

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

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