Overview

overview

10

Static

static

3

2026-04-23...ry.exe

windows10-2004-x64

10

2026-04-23...ry.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    2026-04-23_8b7d5415be8702dbdeb4edbcad0e2898_elex_emotet_remcos_wannacry
  • Size 1.3MB
  • Sample260423-wtfr3aew3s
  • SHA256 c4ed541fd8bf6a3550df62704971470eec9769b24f765ad7f9a41b7a0f425157
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
gh0stratpurplefoxdiscoverypersistenceratrootkittrojanupx

Malware Config

Targets

    • Target
      2026-04-23_8b7d5415be8702dbdeb4edbcad0e2898_elex_emotet_remcos_wannacry
    • Size 1.3MB
    • SHA256 c4ed541fd8bf6a3550df62704971470eec9769b24f765ad7f9a41b7a0f425157
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoverygh0stratpurplefoxpersistenceratrootkittrojanupx

    • Detect PurpleFox Rootkit

      Detect PurpleFox Rootkit.

      rootkit

    • 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

    • Family: PurpleFox

      PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

      rootkittrojanpurplefox

    • Gh0st RAT payload

    • Custom signature

      UPX dump on OEP (original entry point)

    • Drops file in Drivers directory

    • Server Software Component: Terminal Services DLL

      persistence

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

      persistence

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops file in System32 directory

    • UPX packed file

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

      upx
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

Server Software Component

1
T1505

Terminal Services DLL

1
T1505.005

Privilege Escalation

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

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Remote System Discovery

1
T1018

System Information Discovery

1
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