Overview

overview

10

Static

static

3

kgguanc_btco_x64.msi

windows10-2004-x64

10

kgguanc_btco_x64.msi

windows10-ltsc_2021-x64

10

kgguanc_btco_x64.msi

windows11-21h2-x64

10

kgguanc_btco_x64.msi

windows11-ltsc_2024-x64

10

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General

  • Target
    kgguanc_btco_x64.msi
  • Size 165.6MB
  • Sample260705-xntbmsay3n
  • SHA256 9d5b2083b09fefad811b83f7503a3db0a8568b60c21ab2b4ef61c16720e047a9
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
gh0stratdefense_evasiondiscoveryevasionexecutionpersistenceprivilege_escalationransomwarerattrojanupx

Malware Config

Targets

    • Target
      kgguanc_btco_x64.msi
    • Size 165.6MB
    • SHA256 9d5b2083b09fefad811b83f7503a3db0a8568b60c21ab2b4ef61c16720e047a9
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryevasionexecutiongh0stratpersistenceprivilege_escalationransomwarerattrojanupx

    • Family: Gh0strat

      Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

      ratgh0strat

    • Gh0st RAT payload

    • Modifies Windows Defender DisableAntiSpyware settings

      evasiontrojan

    • UAC bypass

      defense_evasiontrojan

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

      discovery

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

3
T1059

PowerShell

3
T1059.001

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Installer Packages

1
T1546.016

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Installer Packages

1
T1546.016

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Modify Registry

4
T1112

System Binary Proxy Execution

1
T1218

Msiexec

1
T1218.007

Credential Access

Discovery

Peripheral Device Discovery

2
T1120

Process Discovery

1
T1057

Query Registry

4
T1012

Remote System Discovery

1
T1018

System Information Discovery

6
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks