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HTKL_REMTHING

April 12, 2016
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


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:

103,154 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

12 Apr 2016

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 copies of itself into the affected system:

  • %Windows%\Slave.exe

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

Other System Modifications

This Trojan adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\TWD\
Remote-Anything

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Video\{0DA5857E-6B79-40A2-BE07-E9FDD4552BDB}\
0000
Acceleration.Level = "5"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
sMAC = "00-50-56-BC-27-04"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
sDS Resync = "90"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Port = "4000"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Allowed IP Addresses = "255.255.255.255 "

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
View Only = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Verbose = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Log File = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Gateway = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Tray Icon = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Allow Options = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Accept Connections = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Close All = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Filter Manually = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
sListenPrivate = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
sApp. Mode = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
sSignAfterSOS = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
Password = "{random values}"

HKEY_LOCAL_MACHINE\SOFTWARE\TWD\
Remote-Anything
sDays = "{random characters}"

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.8

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

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\Software\TWD
    • Remote-Anything

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Video\{0DA5857E-6B79-40A2-BE07-E9FDD4552BDB}\0000
    • Acceleration.Level = "5"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • sMAC = "00-50-56-BC-27-04"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • sDS Resync = "90"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Port = "4000"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Allowed IP Addresses = "255.255.255.255 "
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • View Only = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Verbose = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Log File = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Gateway = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Tray Icon = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Allow Options = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Accept Connections = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Close All = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Filter Manually = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • sListenPrivate = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • sApp. Mode = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • sSignAfterSOS = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • Password = "{random values}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\TWD\Remote-Anything
    • sDays = "{random characters}"

Step 4

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