TROJ_HPCOINMINE.SM

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.

It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

It deletes the initially executed copy of itself.

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 drops the following files:

• %Windows%\Fonts\history.txt
• %Windows%\Fonts\id.txt

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It drops the following copies of itself into the affected system:

• %Windows%\Fonts\wuauser.exe

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

Dropping Routine

This Trojan drops the following files:

• %Windows%\Fonts\msiexev.exe ← Minerd Coin Miner

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It executes the dropped file. As a result, malicious routines of the dropped file are exhibited on the affected system.

Other Details

This Trojan does the following:

• It executes the following command lines:
  • cmd.exe /c netsh advfirewall firewall add rule name="Chrome" dir=in program="%PROGRAMFILES%\Google\Chrome\Application\chrome.txt" action=allow
  • cmd.exe /c netsh advfirewall firewall add rule name="Windriver" dir=in program="%PROGRAMFILES%\Hardware Driver Management\windriver.exe" action=allow
  • cmd.exe /c netsh advfirewall firewall delete rule name="Chrome"
  • cmd.exe /c netsh advfirewall firewall delete rule name="Windriver"
  • cmd.exe /c netsh ipsec static add filter filterlist=block any srcmask=32 srcport=0 dstaddr=me dstport=445 protocol=tcp description=445
  • cmd.exe /c netsh ipsec static add filteraction name=block action=block
  • cmd.exe /c netsh ipsec static add filterlist name=block
  • cmd.exe /c netsh ipsec static add policy name=netbc
  • cmd.exe /c netsh ipsec static add rule name=block policy=netbc filterlist=block filteraction=block
  • cmd.exe /c netsh ipsec static set policy name=netbc assign=y
  • cmd.exe /c sc delete WELM
  • cmd.exe /c sc stop WELM
  • cmd.exe /c taskkill /f /im hdmanager.exe
  • cmd.exe /c taskkill /f /im mmc.exe
  • cmd.exe /c taskkill /f /im msiexev.exe

It deletes the initially executed copy of itself