Analysis by: Jemimah Mae Molina
 PLATFORM:

Windows

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

  • Threat Type: Coinminer

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Dropped by other malware, Downloaded from the Internet

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

It uses the system's central processing unit (CPU) and/or graphical processing unit (GPU) resources to mine cryptocurrency.

  TECHNICAL DETAILS

File Size: 104859730 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 02 Sep 2019
Payload: Connects to URLs/IPs

Arrival Details

This Coinminer 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 Coinminer adds the following mutexes to ensure that only one of its copies runs at any one time:

  • Global\94fad2a28742b746497b862e6795115a_v2.13.0

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

  • SbieSvc
  • SbieCtrl
  • Cain
  • Wireshark
  • DumpCap
  • TShark
  • Fiddler
  • APorts
  • TcpView
  • WSExplorer
  • HttpAnalyzer
  • HTTPDebugger
  • NetworkTrafficView
  • SmSniff
  • SocketSniff
  • WebSiteSniffer
  • HTTPNetworkSniffer
  • DNSQuerySniffer
  • CPorts
  • TcpLogView
  • WSockExpert
  • hookME
  • CHKenCap
  • IDAG
  • IDAG64
  • IDAQ
  • IDAQ64
  • WinDbg
  • OllyDBG
  • OllyICE
  • ImmunityDebugger
  • x32dbg
  • x64dbg
  • win32_remote
  • win64_remote64
  • DbgView
  • WinHex
  • PEiD
  • DIE
  • ExeInfoPE
  • LordPE
  • PEditor
  • Stud_PE
  • ImportREC
  • PEStudio
  • PE-Bear
  • HipsDaemon
  • SysDiag-GUI
  • ZhuDongFangYu
  • QHActiveDefense
  • QQPCRTP
  • SfAntiBot
  • RegMon
  • RegShot
  • FileMon
  • ProcMon
  • SysTracer
  • SysMon
  • SysMon64
  • AutoRuns
  • AutoRuns64
  • TaskMgr.exe
  • PerfMon
  • ProcExp
  • ProcExp64
  • ProcessHacker
  • AnVir
  • PExp
  • PExp64
  • SystemExplorer
  • IceSword
  • WSysCheck
  • PCHunter32
  • PCHunter64
  • PowerTool32
  • PowerTool64
  • AntiSpy
  • 360taskmgr
  • sysAnalyzer
  • Proc_Analyzer
  • Proc_Watch
  • Sniff_Hit
  • apimonitor-x86
  • apimonitor-x64
  • SysInspector
  • JoeBoxControl
  • JoeBoxServer
  • ComputerZ_CN

Other Details

This Coinminer does the following:

  • It uses the following details for its coinmining routine:
    • User: {BLOCKED}memkMJP6kvF7tTybSmy8jCzba6g2LhchagD6wgDbDhJxKfnpfNK85dJLaYizboffU8NUdhp4n6eMjAvDgS4qUtn98.v2130+20000
    • Password: x
    • Agent: giRMX/2.14.5 (Windows NT 6.1; Win64; x64) libuv/{libuv version} msvc/{msvc version}
    • Algorithm: cn, cn/r, cn/wow, cn/2, cn/1, cn/0, cn/half, cn/xtl, cn/msr, cn/xao, cn/rto, cn/gpu, cn/rwz, cn/zls, cn/double
    • Wallet: {BLOCKED}14oRpM9zdt7PZGmpChufqSEAFW8RgEMhu4tpGZKiFtogAiPY85GW9tWD9zKEi9XmB4Prw55M5fjjTgrhVhSDLLkFZ
    • Pools:
      • pool.minexmr.com:80
      • sg.minexmr.com:80
      • ca.minexmr.com:80
      • fr.minexmr.com:80
      • de.minexmr.com:80
      • pool.minexmr.uk:80
      • pool.supportxmr.com:80
      • xmr-asia1.nanopool.org:14444
      • xmr.f2pool.com:13531
      • xmr-jp1.nanopool.org:14444
      • xmr-au1.nanopool.org:14444
      • xmr-eu1.nanopool.org:14444
      • xmr-us-east1.nanopool.org:14444
      • xmr-eu2.nanopool.org:14444
      • xmr-us-west1.nanopool.org:14444

It terminates itself if any of the following file(s) are present:

  • cmdvrt32.dll
  • SbieDll.dll
  • cmdvrt64.dll
  • SxIn.dll
  • SXIn64.dll
  • dir_watch.dll
  • api_log.dll
  • api_log.x64.dll
  • DbgHelp.dll
  • WpeSpy.dll
  • WSockHooK.dll

It terminates itself if windows or classes contain any of the following string(s):

  • PROCEXPL
  • PROCMON_WINDOW_CLASS
  • TCPViewClass
  • PortmonClass
  • ProcessHacker
  • AnVirMainFrame
  • Autoruns
  • OLLYDBG
  • OllyDbg
  • pe--diy
  • 1212121
  • TIdaWindow
  • WinDbgFrameClass
  • dbgviewClass
  • gdkWindowToplevel
  • WSExplorer
  • RegmonClass
  • 18467-41
  • SandboxieControlWndClass
  • Sandboxie Control

It uses the system's central processing unit (CPU) and/or graphical processing unit (GPU) resources to mine cryptocurrency. This behavior makes the system run abnormally slow.

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 15.346.08
FIRST VSAPI PATTERN DATE: 05 Sep 2019
VSAPI OPR PATTERN File: 15.347.00
VSAPI OPR PATTERN Date: 06 Sep 2019

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 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

Identify and terminate files detected as Coinminer.Win64.MALXMR.TIAOODC

[ 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 4

Scan your computer with your Trend Micro product to delete files detected as Coinminer.Win64.MALXMR.TIAOODC. 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 the following Trend Micro Support pages for more information:


Did this description help? Tell us how we did.